[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Angelo Gatti]

Just saw this as I am in search of canti brakes without having to break the 
bank with the likes of  Paul's or Velo Orange (as nice as they are...).  I 
notices the 980's and am wondering what your experience has been with 
these.


On Wednesday, August 22, 2018 at 1:38:49 PM UTC-4, Bill Lindsay wrote:
>
> I've got a road build coming up that will use cantilever brakes.  I've got 
> a TON of cantilever brakes in my stash, but even so I decided to buy more.  
> I really like the super simple, minimalist design of the Dia Compe 980s 
> that Riv now sells.  I decided to buy two bikes worth and I'm going to 
> shape and polish one set.  They seem about as light as cantilever brakes 
> can possibly be, so I decided to do a weigh-off compared to some Paul 
> Touring cantilevers in my parts box.  I weighed two arms, with springs, and 
> with the mounting bolts.  I did not include straddle cables or straddle 
> hangers or brake pads.  Arms to arms, the 980s are a few grams lighter 82g 
> vs 91g.  I'll post photos and updated weights after they are polished.  
> After I've got them on my new build, I'll report back on how well they 
> work.  I like that they are forged, light and cheap.  Hopefully I can 
> polish them pretty, and hopefully they work well.  
>
> Bill Lindsay
> El Cerrito, CA
>

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To view this discussion on the web visit 
https://groups.google.com/d/msgid/rbw-owners-bunch/fd1f4542-27de-4e85-9d59-efccb5633ed4%40googlegroups.com.

Re: [RBW] Re: Weight weenie report. Dia Compe 980 brakes

[David Hays]

Thanks. Just found this:
http://www.cyclofiend.com/notes/bsfaq.html 

Identifying the year of my bike as well.

> On Mar 25, 2019, at 2:49 PM, Dave Redmon  wrote:
> 
> My 1991 frame was black and said Synergy. The 1992 frame was dark green, as I 
> recall. 
> 
> On Mon, Mar 25, 2019, 1:34 PM David Hays <23writ...@gmail.com 
>  wrote:
> My RB-T says Synergy on the crossbar and the last of the serial number is 
> 0121039. Anyone know what year this would be?
> Thanks
> David Hays
> Williamsville, New York
> 
> > On Mar 25, 2019, at 12:53 PM, Dave Redmon  > > wrote:
> > 
> > My 1991 RB-T bike was stolen a couple years and I found a 1994 RB-T to 
> > replace it. Cantilever post widths are significantly different. I can fit a 
> > number of brakes to my 1994 fork that would not fit my 1991 fork.
> > 
> > Dave in Kansas
> > 
> > -- 
> > You received this message because you are subscribed to the Google Groups 
> > "RBW Owners Bunch" group.
> > To unsubscribe from this group and stop receiving emails from it, send an 
> > email to rbw-owners-bunch+unsubscr...@googlegroups.com 
> > .
> > To post to this group, send email to rbw-owners-bunch@googlegroups.com 
> > .
> > Visit this group at https://groups.google.com/group/rbw-owners-bunch 
> > .
> > For more options, visit https://groups.google.com/d/optout 
> > .
> 
> -- 
> You received this message because you are subscribed to a topic in the Google 
> Groups "RBW Owners Bunch" group.
> To unsubscribe from this topic, visit 
> https://groups.google.com/d/topic/rbw-owners-bunch/8pPxVEkTtyE/unsubscribe 
> .
> To unsubscribe from this group and all its topics, send an email to 
> rbw-owners-bunch+unsubscr...@googlegroups.com 
> .
> To post to this group, send email to rbw-owners-bunch@googlegroups.com 
> .
> Visit this group at https://groups.google.com/group/rbw-owners-bunch 
> .
> For more options, visit https://groups.google.com/d/optout 
> .
> 
> -- 
> You received this message because you are subscribed to the Google Groups 
> "RBW Owners Bunch" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to rbw-owners-bunch+unsubscr...@googlegroups.com 
> .
> To post to this group, send email to rbw-owners-bunch@googlegroups.com 
> .
> Visit this group at https://groups.google.com/group/rbw-owners-bunch 
> .
> For more options, visit https://groups.google.com/d/optout 
> .

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

Re: [RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Dave Redmon]

My 1991 frame was black and said Synergy. The 1992 frame was dark green, as
I recall.

On Mon, Mar 25, 2019, 1:34 PM David Hays <23writ...@gmail.com wrote:

> My RB-T says Synergy on the crossbar and the last of the serial number is
> 0121039. Anyone know what year this would be?
> Thanks
> David Hays
> Williamsville, New York
>
> > On Mar 25, 2019, at 12:53 PM, Dave Redmon 
> wrote:
> >
> > My 1991 RB-T bike was stolen a couple years and I found a 1994 RB-T to
> replace it. Cantilever post widths are significantly different. I can fit a
> number of brakes to my 1994 fork that would not fit my 1991 fork.
> >
> > Dave in Kansas
> >
> > --
> > You received this message because you are subscribed to the Google
> Groups "RBW Owners Bunch" group.
> > To unsubscribe from this group and stop receiving emails from it, send
> an email to rbw-owners-bunch+unsubscr...@googlegroups.com.
> > To post to this group, send email to rbw-owners-bunch@googlegroups.com.
> > Visit this group at https://groups.google.com/group/rbw-owners-bunch.
> > For more options, visit https://groups.google.com/d/optout.
>
> --
> You received this message because you are subscribed to a topic in the
> Google Groups "RBW Owners Bunch" group.
> To unsubscribe from this topic, visit
> https://groups.google.com/d/topic/rbw-owners-bunch/8pPxVEkTtyE/unsubscribe
> .
> To unsubscribe from this group and all its topics, send an email to
> rbw-owners-bunch+unsubscr...@googlegroups.com.
> To post to this group, send email to rbw-owners-bunch@googlegroups.com.
> Visit this group at https://groups.google.com/group/rbw-owners-bunch.
> For more options, visit https://groups.google.com/d/optout.
>

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

Re: [RBW] Re: Weight weenie report. Dia Compe 980 brakes

[David Hays]

My RB-T says Synergy on the crossbar and the last of the serial number is 
0121039. Anyone know what year this would be?
Thanks
David Hays
Williamsville, New York

> On Mar 25, 2019, at 12:53 PM, Dave Redmon  wrote:
> 
> My 1991 RB-T bike was stolen a couple years and I found a 1994 RB-T to 
> replace it. Cantilever post widths are significantly different. I can fit a 
> number of brakes to my 1994 fork that would not fit my 1991 fork.
> 
> Dave in Kansas
> 
> -- 
> You received this message because you are subscribed to the Google Groups 
> "RBW Owners Bunch" group.
> To unsubscribe from this group and stop receiving emails from it, send an 
> email to rbw-owners-bunch+unsubscr...@googlegroups.com.
> To post to this group, send email to rbw-owners-bunch@googlegroups.com.
> Visit this group at https://groups.google.com/group/rbw-owners-bunch.
> For more options, visit https://groups.google.com/d/optout.

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Dave Redmon]

My 1991 RB-T bike was stolen a couple years and I found a 1994 RB-T to replace 
it. Cantilever post widths are significantly different. I can fit a number of 
brakes to my 1994 fork that would not fit my 1991 fork.

Dave in Kansas

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[David Hays]

Does anybody know if these will work with the RB-T?
Thanks.
David Hays
Williamsville, New York 

On Wednesday, August 22, 2018 at 1:38:49 PM UTC-4, Bill Lindsay wrote:
>
> I've got a road build coming up that will use cantilever brakes.  I've got 
> a TON of cantilever brakes in my stash, but even so I decided to buy more.  
> I really like the super simple, minimalist design of the Dia Compe 980s 
> that Riv now sells.  I decided to buy two bikes worth and I'm going to 
> shape and polish one set.  They seem about as light as cantilever brakes 
> can possibly be, so I decided to do a weigh-off compared to some Paul 
> Touring cantilevers in my parts box.  I weighed two arms, with springs, and 
> with the mounting bolts.  I did not include straddle cables or straddle 
> hangers or brake pads.  Arms to arms, the 980s are a few grams lighter 82g 
> vs 91g.  I'll post photos and updated weights after they are polished.  
> After I've got them on my new build, I'll report back on how well they 
> work.  I like that they are forged, light and cheap.  Hopefully I can 
> polish them pretty, and hopefully they work well.  
>
> Bill Lindsay
> El Cerrito, CA
>

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Garth]

Max, Apparently my reply may have been misread as I pointed to the *CR710* *for 
narrow spacing(they are designed for cross bikes with 33mm+/- tires)*, not 
the 720.   The 710 costs about $20-25 each. 


https://www.tektro.com/products.php?p=46


On Wednesday, August 29, 2018 at 9:07:32 AM UTC-4, Max S wrote:
>
> Garth, 
>
> I agree that the 720 is a good brake and a good value. In fact I have it 
> installed on one bike, but had to move all of the spacers / washers to the 
> outboard side of the pad holder bolt, because the canti posts are closer to 
> each other than currently standard. It actually works fine, but just — at 
> the limit of the adjustment range for the brake. Just wondering if there is 
> a simple and inexpensive option that works better (besides the old XT 
> cantis). 
>
> While we are on this tangent of narrow post spacing, are there V or mini-V 
> style brakes that work better than others in this instance?.. 
>
> - Max “narrow (post) minded for the moment” in A2

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[phil k]

Got a pair in.

So far it's been a breeze to set up, but I ditched the straddle hanger for 
moon units. The spring tension seems pretty even out the box. Did not have 
to adjust spring tension at all so far. So in that sense, it was just 
slightly easier to set up than the Paul Neo Retros. Can also adjust toe in.

Initial impression - less braking force than Paul Neo Retros, but not as 
grabby either. I think for a road bike it's a great option, but I would 
pick the Neo Retros for dirt/off-road applications. I don't feel the need 
to switch pads at the moment, but haven't been able to put its paces 
through any rain yet.

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Max S]

Garth, 

I agree that the 720 is a good brake and a good value. In fact I have it 
installed on one bike, but had to move all of the spacers / washers to the 
outboard side of the pad holder bolt, because the canti posts are closer to 
each other than currently standard. It actually works fine, but just — at the 
limit of the adjustment range for the brake. Just wondering if there is a 
simple and inexpensive option that works better (besides the old XT cantis). 

While we are on this tangent of narrow post spacing, are there V or mini-V 
style brakes that work better than others in this instance?.. 

- Max “narrow (post) minded for the moment” in A2

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Belopsky]

FYI these work better than other brakes I've had, but perhaps it's the 
lever. I have not put KoolStop pads on the Dia Compe 980 yet. Any 
suggestions for which? I am thinking just the Supra, same as I have on some 
V-brakes unless there is a better type to use on V-brakes and I'll swap

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Garth]

   Max,  Any cantilever intended for a cyclocross frame is by nature for 
narrow spacing.  

You might try a Tektro CR 710 for example. These are easy on the pocketbook 
AND work well. I replace all Tektro pads with Kool Stop blacks or salmons 
even before installing. I have this brake on my Bomba front and it's 
fantastic. Very firm, immediate response and strong braking, no squishies.  
It would also work on my canti road bike with narrow spacing, which I 
currently use SunTour XC Pro and those are outstanding !  

The CR710 seems to get overlooked for whatever reason compared to the 720, 
which on the Bomba was decidedly "just okay".  


On Tuesday, August 28, 2018 at 10:20:16 PM UTC-4, Max S wrote:
>
> What’s the optimum post spacing (on fork and stays) for these?.. 
>
> - Max “they don’t make them for narrow posts anymore” in A2 

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

['Mark in Beacon' via RBW Owners Bunch]

It depends somewhat on rim width, but I think around 80-85 is generally 
what most v-brake/canti posts are set at these days? Builders will know, 
but I believe I read 80mm suggested on a framebuilding forum (Curt 
Goodrich?). That's what I used for my spacing when I redid some posts for a 
conversion. I'm running Tektros and they fit fine. Maybe a bit more for 
really wide rims?

On Tuesday, August 28, 2018 at 10:20:16 PM UTC-4, Max S wrote:
>
> What’s the optimum post spacing (on fork and stays) for these?.. 
>
> - Max “they don’t make them for narrow posts anymore” in A2 

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Max S]

What’s the optimum post spacing (on fork and stays) for these?.. 

- Max “they don’t make them for narrow posts anymore” in A2 

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Belopsky]

Ride report: Seem to work well. I'll swap for Kool Stop pads eventually. 

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Belopsky]

Nice!

I got my set it from RBW yesterday and installed today. Going to take a 
bike around the block and report back on how well they work with Tektro 
RL340 levers..

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

['Mark in Beacon' via RBW Owners Bunch]

On Thursday, August 23, 2018 at 4:44:37 AM UTC-4, R. Alexis wrote: *Don't 
know why Dia-Compe didn't come up with a different model# for these brakes*
. 

I have been thinking the same thing, as they have no relationship to the 
original other than the name of the company that makes them. Both the 
design and the look are fundamentally different, and the new brakes, like 
most modern cantis, will get hung up on the fork blades or the seat stays, 
limiting the tire width; in fact, Rivendell recommends the Shimano CX50s 
for anything over 45mm. The original design keeps the brake blocks in front 
of the braze-ons, so the brakes can open all the way. Ironically, that 
feature--being able to open fully like old-style cantis-- is what Riv used 
to tout about the CX70-CX50 brakes, though I see that has been removed from 
the description. Riv's ad copy says they are a much improved version, but 
the only potentially objective statement supporting this statement seems to 
be "far, far, better brake shoes." Of course the originals could be 
upgraded with far, far better brake shoes as well.

I look forward to seeing what kind of carving Bill does, as I am somewhat 
underwhelmed with aesthetics of the "new" 980 and prefer the styling of the 
originals. Then again, while it seems they often not fondly regarded in 
terms of looks, I find the simplicity and angularity of the CR720s to be 
quite attractive, and they also carry out in a timely manner the cessation 
of the spinning of the bicycle wheels required of them.

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Paul Clifton]

Got it. I noticed the canti clarification as I clicked post, but I still 
wasn't sure why it mattered. Makes sense now. My canti conversion to 622 is 
the worst stopping bike I have, but there are so many potential reasons for 
that (pads aren't nice, cable hangers are whack, straddle cable hanger is 
also whack, cables haven't been adjusted since I built the bike, etc.). 
I'll try adjusting things before I write it off. The pads hit the rim just 
fine at least. I'm using some of those old Shimano cantis that everyone 
recommends. Anyway, I'll keep the MA in mind when I adjust things, but no 
need to share photos of my brake butchery at the moment. Sorry for 
derailing the thread.

Paul

On Wednesday, August 22, 2018 at 5:31:20 PM UTC-4, Bill Lindsay wrote:
>
> Paul 
>
> Please don't misunderstand me.  I specifically referred to converting from 
> 27" to 700c on cantilever equipped frames. If the cantilever posts are in 
> the right place for 630mm rims, you have to run the pads quite low for 
> 622mm rims and the mechanical advantage gets all messed up, forcing 
> compromises on braking performance, or brake feel, or brake equipment 
> choices or brake setup choices or some/all of the above.  If you want me to 
> comment on your two bikes, I'd be happy to look at your photos and run the 
> numbers.  Basically, you'd want to start with a bike that was built wrong 
> (in the right way).  
>
> Don't confuse my comment with a general statement about 27" to 700c 
> conversions.  For centerpull and sidepull brakes, I think it's usually 
> straightforward and usually awesome.
>
> Bill
>
> On Wednesday, August 22, 2018 at 2:07:10 PM UTC-7, Paul Clifton wrote:
>
>> Hey Bill,
>>
>> What are the compromises converting 27 to 700?
>> I've never had a problem with it, and I can fit fatter tires, but I've 
>> only done it to a couple bikes.
>>
>> Paul in ATL
>>
>> On Wednesday, August 22, 2018 at 2:15:45 PM UTC-4, Bill Lindsay wrote:
>>>
>>> I have no specific thoughts about the 980 suitability for a 630 to 622 
>>> conversion.  My general thoughts are that 630 to 622 conversions with 
>>> cantilever brakes are always massively compromised, and I'd personally 
>>> never bother with such a project.  If I was helping a friend who was 
>>> dead-set on such a project, I would use vintage style brakes that use post 
>>> style brake pads.  Like from my parts box I have some vintage Shimanos that 
>>> I'd try.  
>>>
>>> Bill 
>>>
>>> On Wednesday, August 22, 2018 at 10:50:33 AM UTC-7, John G. wrote:
>>>
 Any thoughts on the vertical adjustability of the pads?  Wondering if 
 they’d suit a 27inch to 700c conversion. I guess Canti post spacing is 
 also 
 an issue that is have to consider.
>>>
>>>

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Bill Lindsay]

Igor asked which brake levers I’ll be using. 

I will use either SRAM S500 or S900. 

Bill Lindsay
El Cerrito Ca

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Belopsky]

What brake levers do you plan on using with these brakes?

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[lconley]

If I can remove the branding with Simichrome, I usually do. - Tektros were 
usually good for that before they started using paint instead of polishing 
the aluminum. IRD derailleur clamps and Microshift derailleurs too.
I remember the old Universal brakes that put blue paint in the recessed 
branding.

Laing
Cocoa FL

On Thursday, August 23, 2018 at 6:33:08 PM UTC-4, Bill Lindsay wrote:

> I took one bare arm and my smallest file with me on my commute today for 
> some meditative filing.  I knocked out the forge parting lines pretty 
> quickly.  Now is time for the biggest aesthetic decision:
>
> Do I remove the "Dia Compe" that is forged in?  It's not deep, so it 
> wouldn't be terribly difficult, and the thinning would be very 
> JPWeigle-esque.  I'm not one of those anti-branding zealots, though.  I'm 
> leaning towards erasing the "Dia Compe"  
>
> Bill Lindsay
> El Cerrito, CA
>
> On Wednesday, August 22, 2018 at 10:38:49 AM UTC-7, Bill Lindsay wrote:
>>
>> I've got a road build coming up that will use cantilever brakes.  I've 
>> got a TON of cantilever brakes in my stash, but even so I decided to buy 
>> more.  I really like the super simple, minimalist design of the Dia Compe 
>> 980s that Riv now sells.  I decided to buy two bikes worth and I'm going to 
>> shape and polish one set.  They seem about as light as cantilever brakes 
>> can possibly be, so I decided to do a weigh-off compared to some Paul 
>> Touring cantilevers in my parts box.  I weighed two arms, with springs, and 
>> with the mounting bolts.  I did not include straddle cables or straddle 
>> hangers or brake pads.  Arms to arms, the 980s are a few grams lighter 82g 
>> vs 91g.  I'll post photos and updated weights after they are polished.  
>> After I've got them on my new build, I'll report back on how well they 
>> work.  I like that they are forged, light and cheap.  Hopefully I can 
>> polish them pretty, and hopefully they work well.  
>>
>> Bill Lindsay
>> El Cerrito, CA
>>
>

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Bill Lindsay]

I took one bare arm and my smallest file with me on my commute today for 
some meditative filing.  I knocked out the forge parting lines pretty 
quickly.  Now is time for the biggest aesthetic decision:

Do I remove the "Dia Compe" that is forged in?  It's not deep, so it 
wouldn't be terribly difficult, and the thinning would be very 
JPWeigle-esque.  I'm not one of those anti-branding zealots, though.  I'm 
leaning towards erasing the "Dia Compe"  

Bill Lindsay
El Cerrito, CA

On Wednesday, August 22, 2018 at 10:38:49 AM UTC-7, Bill Lindsay wrote:
>
> I've got a road build coming up that will use cantilever brakes.  I've got 
> a TON of cantilever brakes in my stash, but even so I decided to buy more.  
> I really like the super simple, minimalist design of the Dia Compe 980s 
> that Riv now sells.  I decided to buy two bikes worth and I'm going to 
> shape and polish one set.  They seem about as light as cantilever brakes 
> can possibly be, so I decided to do a weigh-off compared to some Paul 
> Touring cantilevers in my parts box.  I weighed two arms, with springs, and 
> with the mounting bolts.  I did not include straddle cables or straddle 
> hangers or brake pads.  Arms to arms, the 980s are a few grams lighter 82g 
> vs 91g.  I'll post photos and updated weights after they are polished.  
> After I've got them on my new build, I'll report back on how well they 
> work.  I like that they are forged, light and cheap.  Hopefully I can 
> polish them pretty, and hopefully they work well.  
>
> Bill Lindsay
> El Cerrito, CA
>

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Harald Kliems]

I'll be curious to hear how they compare with Tektro CR-720s. I'm 
reasonably happy with mine, but the Diacompes are certainly prettier and 
also shave off a bit of weight. And people have complained that the Tektro 
has too much flex/play.

 Harald in Madison (WI)

On Wednesday, August 22, 2018 at 12:38:49 PM UTC-5, Bill Lindsay wrote:
>
> I've got a road build coming up that will use cantilever brakes.  I've got 
> a TON of cantilever brakes in my stash, but even so I decided to buy more.  
> I really like the super simple, minimalist design of the Dia Compe 980s 
> that Riv now sells.  I decided to buy two bikes worth and I'm going to 
> shape and polish one set.  They seem about as light as cantilever brakes 
> can possibly be, so I decided to do a weigh-off compared to some Paul 
> Touring cantilevers in my parts box.  I weighed two arms, with springs, and 
> with the mounting bolts.  I did not include straddle cables or straddle 
> hangers or brake pads.  Arms to arms, the 980s are a few grams lighter 82g 
> vs 91g.  I'll post photos and updated weights after they are polished.  
> After I've got them on my new build, I'll report back on how well they 
> work.  I like that they are forged, light and cheap.  Hopefully I can 
> polish them pretty, and hopefully they work well.  
>
> Bill Lindsay
> El Cerrito, CA
>

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[R. Alexis]

The new Dia-Compe 980 brakes look interesting. I have the original 
Dia-Compe 980 brakes, 
http://velobase.com/ViewComponent.aspx?ID=D2AA4D24-29A3-4F50-B3CD-C789F21E144E=117=144
 
in use on my 1994 Bridgestone MB-1 retro build and on my 1987 Schwinn 
Voyageur 27" to 700c conversion. Don't know why Dia-Compe didn't come up 
with a different model# for these brakesh. 

As for the 27" to 700c conversion, it may be a case by case issue on how 
well it works. When I initially built this frameset up I used some hybrid 
wheelset and Dia-Compe 984 brakes. The brakes didn't allow for the pads to 
hit the rims squarely. I still rode it. When I sold the bike I mounted some 
high profile Shimano Deore DX post style brakes. When I got the bike back 
and revamped the build I mounted some 980 brakes. These work well in use. 
The front have to be adjusted to the point that the brake arms angle 
slightly downward. I have a Dia-Compe quick release roller straddle cable 
carrier along with quick release TRP RRL brake levers help in getting the 
brakes unhooked for wheel removal. With both quick releases it is possible 
to get the brakes open enough so the wheel can clear without unhooking the 
brakes from the straddle cable. 

Reginald "Another Old Timer" Alexis

On Wednesday, August 22, 2018 at 7:20:15 PM UTC-5, Bill Lindsay wrote:
>
> Haha, don't worry about it. It's just a few old timers trying to show off 
> how much we know. Nobody has said 'get off my lawn' yet.  The Riv-content 
> remains: Dia Compe 980 brakes are subjectively nice looking, objectively 
> light weight, objectively inexpensive, and objectively in-stock at 
> Rivendell Bicycle Works in Walnut Creek, California.  The jury is split on 
> 630 to 622 canti-conversions, and at least one of us is objectively 
> not-dead.  
>
> Bill Lindsay
> El Cerrito, CA  
>
> On Wednesday, August 22, 2018 at 5:05:04 PM UTC-7, John G. wrote:
>>
>> I think I hijacked this thread. Apologies. I’ll DM next time.
>
>

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Bill Lindsay]

Haha, don't worry about it. It's just a few old timers trying to show off 
how much we know. Nobody has said 'get off my lawn' yet.  The Riv-content 
remains: Dia Compe 980 brakes are subjectively nice looking, objectively 
light weight, objectively inexpensive, and objectively in-stock at 
Rivendell Bicycle Works in Walnut Creek, California.  The jury is split on 
630 to 622 canti-conversions, and at least one of us is objectively 
not-dead.  

Bill Lindsay
El Cerrito, CA  

On Wednesday, August 22, 2018 at 5:05:04 PM UTC-7, John G. wrote:
>
> I think I hijacked this thread. Apologies. I’ll DM next time.

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[John G.]

I think I hijacked this thread. Apologies. I’ll DM next time.

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Craig Montgomery]

I've converted 3 or 4 27" canti-bikes to 700c over the decades. Zoomed down 
mountains fully-loaded. Never died. 

Craig in Tucson

On Wednesday, August 22, 2018 at 3:17:40 PM UTC-7, lconley wrote:
>
> The difference between 622 and 630 is 8mm in diameter and 4mm in radius. 
> The 622 pad will be 4 mm (1/6 inch) closer to the canti post than the 630. 
> If it is within the range of the standard slot for pad mounting, it is not 
> a problem - every pad slot on a brake arm that I have seen was considerably 
> longer than 4mm. I would not worry about 4mm upsetting the brake balance or 
> feel. A 650b conversion from 700c using longer side or center pulls is a 
> much more radical change to caliper ratio, and they seem to work pretty 
> well.
>
> Also remember that you can play around with the cantilever straddle cable 
> length to change the brake pull ratio - a slightly longer straddle cable 
> will cancel the 4mm pad closer to the pivot. Don't ask me to do the math - 
> Google Sheldon Brown.
>
> The only problem that I have ever had with a 27 to 700c is on my P-15 
> Paramount, normal reach Campagnolo Nuovo Record sidepull on the rear with a 
> Campagnolo dropbolt reaches a 27 x 1 but not a 700c (nor a 27 x 1-1/4) - 
> When you are on the limits of the brake arm slot, the rim width can come 
> into play. Back in the mid 70s all we had was 700c sewups and 27" 
> clinchers, no 700c clinchers. Many bicycles had greater tire clearances in 
> the rear than the front (thus the mixed Weinmann and later Dia-Compe 750R, 
> 610F centerpull brake sets). I actually have Dia-Compe 750R, 610F 
> centerpull brakes on a couple of Rivendells. 750s are 14mm longer than 610s 
> - again I wouldn't worry about 4mm if it bolts on with no modification. 
>
> Laing
> Cocoa FL
>
>
> On Wednesday, August 22, 2018 at 10:50:33 AM UTC-7, John G. wrote:
>
>> Any thoughts on the vertical adjustability of the pads?  Wondering if 
> they’d suit a 27inch to 700c conversion. I guess Canti post spacing is 
> also 
> an issue that is have to consider.



-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[lconley]

The difference between 622 and 630 is 8mm in diameter and 4mm in radius. 
The 622 pad will be 4 mm (1/6 inch) closer to the canti post than the 630. 
If it is within the range of the standard slot for pad mounting, it is not 
a problem - every pad slot on a brake arm that I have seen was considerably 
longer than 4mm. I would not worry about 4mm upsetting the brake balance or 
feel. A 650b conversion from 700c using longer side or center pulls is a 
much more radical change to caliper ratio, and they seem to work pretty 
well.

Also remember that you can play around with the cantilever straddle cable 
length to change the brake pull ratio - a slightly longer straddle cable 
will cancel the 4mm pad closer to the pivot. Don't ask me to do the math - 
Google Sheldon Brown.

The only problem that I have ever had with a 27 to 700c is on my P-15 
Paramount, normal reach Campagnolo Nuovo Record sidepull on the rear with a 
Campagnolo dropbolt reaches a 27 x 1 but not a 700c (nor a 27 x 1-1/4) - 
When you are on the limits of the brake arm slot, the rim width can come 
into play. Back in the mid 70s all we had was 700c sewups and 27" 
clinchers, no 700c clinchers. Many bicycles had greater tire clearances in 
the rear than the front (thus the mixed Weinmann and later Dia-Compe 750R, 
610F centerpull brake sets). I actually have Dia-Compe 750R, 610F 
centerpull brakes on a couple of Rivendells. 750s are 14mm longer than 610s 
- again I wouldn't worry about 4mm if it bolts on with no modification. 

Laing
Cocoa FL


On Wednesday, August 22, 2018 at 10:50:33 AM UTC-7, John G. wrote:

> Any thoughts on the vertical adjustability of the pads?  Wondering if 
 they’d suit a 27inch to 700c conversion. I guess Canti post spacing is 
 also 
 an issue that is have to consider.
>>>
>>>

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Bill Lindsay]

Compass brakes are $300 for two wheels.  Dia Compe 980s are $52 for two 
wheels.  The price difference is $248.  If the weight difference is 7g per 
wheel, then that would make that $17.71 per gram.  When I'm going weight 
weenie, I'm looking for $1/gram opportunities.  If I can throw $450 at my 
bike and drop a pound, that's a $1 per gram opportunity, and might be worth 
doing.  When it gets into the $5 per gram range, and would cost an 
additional $2000 to drop one pound, I'm usually out at that point.  $17 a 
gram is pretty dear.  If I ever bought Compass Cantilevers, it would be for 
beauty and performance, and the fact that they are not heavy.  




On Wednesday, August 22, 2018 at 2:38:18 PM UTC-7, Bill Schairer wrote:
>
> Compass claims their Rene Herse to be 75g if you want to shave off another 
> 7g per wheel.  Don’t know what the $/g might work out to be... 
>
> Bill

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Bill Lindsay]

Paul 

Please don't misunderstand me.  I specifically referred to converting from 
27" to 700c on cantilever equipped frames. If the cantilever posts are in 
the right place for 630mm rims, you have to run the pads quite low for 
622mm rims and the mechanical advantage gets all messed up, forcing 
compromises on braking performance, or brake feel, or brake equipment 
choices or brake setup choices or some/all of the above.  If you want me to 
comment on your two bikes, I'd be happy to look at your photos and run the 
numbers.  Basically, you'd want to start with a bike that was built wrong 
(in the right way).  

Don't confuse my comment with a general statement about 27" to 700c 
conversions.  For centerpull and sidepull brakes, I think it's usually 
straightforward and usually awesome.

Bill

On Wednesday, August 22, 2018 at 2:07:10 PM UTC-7, Paul Clifton wrote:

> Hey Bill,
>
> What are the compromises converting 27 to 700?
> I've never had a problem with it, and I can fit fatter tires, but I've 
> only done it to a couple bikes.
>
> Paul in ATL
>
> On Wednesday, August 22, 2018 at 2:15:45 PM UTC-4, Bill Lindsay wrote:
>>
>> I have no specific thoughts about the 980 suitability for a 630 to 622 
>> conversion.  My general thoughts are that 630 to 622 conversions with 
>> cantilever brakes are always massively compromised, and I'd personally 
>> never bother with such a project.  If I was helping a friend who was 
>> dead-set on such a project, I would use vintage style brakes that use post 
>> style brake pads.  Like from my parts box I have some vintage Shimanos that 
>> I'd try.  
>>
>> Bill 
>>
>> On Wednesday, August 22, 2018 at 10:50:33 AM UTC-7, John G. wrote:
>>
>>> Any thoughts on the vertical adjustability of the pads?  Wondering if 
>>> they’d suit a 27inch to 700c conversion. I guess Canti post spacing is also 
>>> an issue that is have to consider.
>>
>>

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Paul Clifton]

Hey Bill,

What are the compromises converting 27 to 700?
I've never had a problem with it, and I can fit fatter tires, but I've only 
done it to a couple bikes.

Paul in ATL

On Wednesday, August 22, 2018 at 2:15:45 PM UTC-4, Bill Lindsay wrote:
>
> I have no specific thoughts about the 980 suitability for a 630 to 622 
> conversion.  My general thoughts are that 630 to 622 conversions with 
> cantilever brakes are always massively compromised, and I'd personally 
> never bother with such a project.  If I was helping a friend who was 
> dead-set on such a project, I would use vintage style brakes that use post 
> style brake pads.  Like from my parts box I have some vintage Shimanos that 
> I'd try.  
>
> Bill 
>
> On Wednesday, August 22, 2018 at 10:50:33 AM UTC-7, John G. wrote:
>
>> Any thoughts on the vertical adjustability of the pads?  Wondering if 
>> they’d suit a 27inch to 700c conversion. I guess Canti post spacing is also 
>> an issue that is have to consider.
>
>

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Belopsky]

Very cool. I bet they stop well and are 1/4th the price of Paul.
RBW seems to be the cheapest place (and one of the only online from what 
i've found) to stock at current

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[John G.]

Thanks. You're right. I revisit the idea of a 630 to 622 conversion 
periodically, and always walk away immediately. 

In any case, looking forward to your thoughts on the 980s on your road 
build.

On Wednesday, August 22, 2018 at 2:15:45 PM UTC-4, Bill Lindsay wrote:
>
> I have no specific thoughts about the 980 suitability for a 630 to 622 
> conversion.  My general thoughts are that 630 to 622 conversions with 
> cantilever brakes are always massively compromised, and I'd personally 
> never bother with such a project.  If I was helping a friend who was 
> dead-set on such a project, I would use vintage style brakes that use post 
> style brake pads.  Like from my parts box I have some vintage Shimanos that 
> I'd try.  
>
> Bill 
>
> On Wednesday, August 22, 2018 at 10:50:33 AM UTC-7, John G. wrote:
>
>> Any thoughts on the vertical adjustability of the pads?  Wondering if 
>> they’d suit a 27inch to 700c conversion. I guess Canti post spacing is also 
>> an issue that is have to consider.
>
>

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.

[RBW] Re: Weight weenie report. Dia Compe 980 brakes

[Bill Lindsay]

I have no specific thoughts about the 980 suitability for a 630 to 622 
conversion.  My general thoughts are that 630 to 622 conversions with 
cantilever brakes are always massively compromised, and I'd personally 
never bother with such a project.  If I was helping a friend who was 
dead-set on such a project, I would use vintage style brakes that use post 
style brake pads.  Like from my parts box I have some vintage Shimanos that 
I'd try.  

Bill 

On Wednesday, August 22, 2018 at 10:50:33 AM UTC-7, John G. wrote:

> Any thoughts on the vertical adjustability of the pads?  Wondering if 
> they’d suit a 27inch to 700c conversion. I guess Canti post spacing is also 
> an issue that is have to consider.

-- 
You received this message because you are subscribed to the Google Groups "RBW 
Owners Bunch" group.
To unsubscribe from this group and stop receiving emails from it, send an email 
to rbw-owners-bunch+unsubscr...@googlegroups.com.
To post to this group, send email to rbw-owners-bunch@googlegroups.com.
Visit this group at https://groups.google.com/group/rbw-owners-bunch.
For more options, visit https://groups.google.com/d/optout.