Re: [RBW] 650b conversion question

[Eric Norris]

Gavin:

Your bike must be a little different. I’m running Paris-Motos on mine, and 
while there’s gobs of clearance for the front tire, the rear just barely fits 
with a few mms of space. I tried a Hetre on the rear, and it was too tight. 

--Eric Norris
campyonly...@me.com
www.campyonly.com
campyonlyguy.blogspot.com

> On Aug 25, 2016, at 6:12 AM, Tim Gavin  wrote:
> 
> Exactly.  I converted my '97 Road Standard as well.  
> 
> Since those bikes were designed for 622 x 28 under short-reach calipers (like 
> the RB-1), long-reach calipers have the correct reach for 650b (584) wheels.  
> I used R559/Silver calipers for a while, but changed them out for Paul Racer 
> centerpulls for better fender clearance.
> 
> http://s1060.photobucket.com/user/Tim_Gavin/media/Rivendell/IMG_07731_zpsst3nvqm4.jpg.html
>  
> 
> http://s1060.photobucket.com/user/Tim_Gavin/media/Rivendell/IMG_07751_zpsaddhrivd.jpg.html
>  
> 
> 
> My Road Standard could barely clear a 622 x 28 tire (less than 1 mm clearance 
> at the brake bridge).  Now, it fits 584 x 38 tires and 45 mm metal fenders.  
> The chainstays and fork legs are tight enough that a 584 x 42 will rub.
> 
> On Wed, Aug 24, 2016 at 10:42 PM, Eric Norris  > wrote:
> Tektro R559s worked fine on the 650B conversion of my ’95 Road Standard:
> 
> https://flic.kr/p/GVJBjL  
> 
> --Eric Norris
> campyonly...@me.com 
> www.campyonly.com 
> campyonlyguy.blogspot.com 
> 
>> On Aug 24, 2016, at 5:12 PM, Toshi Takeuchi > > wrote:
>> 
>> I've used the Tektro R559 for multiple 700c to 650b conversions, so they do 
>> work.  The amount of brake reach that is required for the conversion will 
>> depend upon the placement of the brake bolt in relation to the wheel, which 
>> is not fixed from bike to bike, so looking at the wheels themselves will not 
>> give you an answer.  It will also depend upon the width of the rim: the 
>> wider the rim, the less reach required.  Also you can gain a couple mm by 
>> using MTB V-brake thin pads.  People have also shaved a mm or two by filing 
>> the frame at the center bolt.  You can get additional reach using a Diacompe 
>> 750 centerpull brake, but the stopping power is not as effective as the 
>> Tektros in my experience.
>> 
>> --Also the BB does not drop the same 2 cm.  You use wider tires with a 
>> larger radius, so the BB height will go up from the larger tire.  The 650b x 
>> 42mm gives a similar BB height to a 700c x 25mm. 
>> 
>> Toshi
>> 
>> 
>> 
>> On Wed, Aug 24, 2016 at 4:56 PM, René Sterental > > wrote:
>> Hi all,
>> 
>> Perusing the RBW website, I came upon the Tektro R559 that come on the Homer 
>> and Cheviot since the Silver brakes stopped being. I'm not sure if they're 
>> the same brake as the Silvers I got with my Homer originally, but there was 
>> a line there stating that they were good for 650b conversions.
>> 
>> I measured my 700c and 650b wheels, and there is a 2cm difference in the 
>> radius to the braking surface of the rims. Does anyone know if there is that 
>> much room to adjust the brake pads on a 700c bike if you put 650b wheels on 
>> it?
>> 
>> I know the BB drops the same 2cm which may create problems, but I'm quite 
>> intrigued by this conversion. I haven't yet called RBW to ask, but I wonder 
>> if any of you experts who have done conversions in the past know if these 
>> brakes would truly allow me to run 650b wheels on one of my 700c bikes.
>> 
>> Thanks!
>> 
>> René 
>> 
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Re: [RBW] 650b conversion question

[Tim Gavin]

Exactly.  I converted my '97 Road Standard as well.

Since those bikes were designed for 622 x 28 under short-reach calipers
(like the RB-1), long-reach calipers have the correct reach for 650b (584)
wheels.  I used R559/Silver calipers for a while, but changed them out for
Paul Racer centerpulls for better fender clearance.

http://s1060.photobucket.com/user/Tim_Gavin/media/Rivendell/IMG_07731_zpsst3nvqm4.jpg.html
http://s1060.photobucket.com/user/Tim_Gavin/media/Rivendell/IMG_07751_zpsaddhrivd.jpg.html

My Road Standard could barely clear a 622 x 28 tire (less than 1 mm
clearance at the brake bridge).  Now, it fits 584 x 38 tires and 45 mm
metal fenders.  The chainstays and fork legs are tight enough that a 584 x
42 will rub.

On Wed, Aug 24, 2016 at 10:42 PM, Eric Norris  wrote:

> Tektro R559s worked fine on the 650B conversion of my ’95 Road Standard:
>
> https://flic.kr/p/GVJBjL
>
> --Eric Norris
> campyonly...@me.com
> www.campyonly.com
> campyonlyguy.blogspot.com
>
> On Aug 24, 2016, at 5:12 PM, Toshi Takeuchi  wrote:
>
> I've used the Tektro R559 for multiple 700c to 650b conversions, so they
> do work.  The amount of brake reach that is required for the conversion
> will depend upon the placement of the brake bolt in relation to the wheel,
> which is not fixed from bike to bike, so looking at the wheels themselves
> will not give you an answer.  It will also depend upon the width of the
> rim: the wider the rim, the less reach required.  Also you can gain a
> couple mm by using MTB V-brake thin pads.  People have also shaved a mm or
> two by filing the frame at the center bolt.  You can get additional reach
> using a Diacompe 750 centerpull brake, but the stopping power is not as
> effective as the Tektros in my experience.
>
> --Also the BB does not drop the same 2 cm.  You use wider tires with a
> larger radius, so the BB height will go up from the larger tire.  The 650b
> x 42mm gives a similar BB height to a 700c x 25mm.
>
> Toshi
>
>
>
> On Wed, Aug 24, 2016 at 4:56 PM, René Sterental 
> wrote:
>
>> Hi all,
>>
>> Perusing the RBW website, I came upon the Tektro R559 that come on the
>> Homer and Cheviot since the Silver brakes stopped being. I'm not sure if
>> they're the same brake as the Silvers I got with my Homer originally, but
>> there was a line there stating that they were good for 650b conversions.
>>
>> I measured my 700c and 650b wheels, and there is a 2cm difference in the
>> radius to the braking surface of the rims. Does anyone know if there is
>> that much room to adjust the brake pads on a 700c bike if you put 650b
>> wheels on it?
>>
>> I know the BB drops the same 2cm which may create problems, but I'm quite
>> intrigued by this conversion. I haven't yet called RBW to ask, but I wonder
>> if any of you experts who have done conversions in the past know if these
>> brakes would truly allow me to run 650b wheels on one of my 700c bikes.
>>
>> Thanks!
>>
>> René
>>
>> --
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>> "RBW Owners Bunch" group.
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>> email to rbw-owners-bunch+unsubscr...@googlegroups.com.
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>>
>
>
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Re: [RBW] 650b conversion question

[Eric Norris]

Tektro R559s worked fine on the 650B conversion of my ’95 Road Standard:

https://flic.kr/p/GVJBjL  

--Eric Norris
campyonly...@me.com
www.campyonly.com
campyonlyguy.blogspot.com

> On Aug 24, 2016, at 5:12 PM, Toshi Takeuchi  wrote:
> 
> I've used the Tektro R559 for multiple 700c to 650b conversions, so they do 
> work.  The amount of brake reach that is required for the conversion will 
> depend upon the placement of the brake bolt in relation to the wheel, which 
> is not fixed from bike to bike, so looking at the wheels themselves will not 
> give you an answer.  It will also depend upon the width of the rim: the wider 
> the rim, the less reach required.  Also you can gain a couple mm by using MTB 
> V-brake thin pads.  People have also shaved a mm or two by filing the frame 
> at the center bolt.  You can get additional reach using a Diacompe 750 
> centerpull brake, but the stopping power is not as effective as the Tektros 
> in my experience.
> 
> --Also the BB does not drop the same 2 cm.  You use wider tires with a larger 
> radius, so the BB height will go up from the larger tire.  The 650b x 42mm 
> gives a similar BB height to a 700c x 25mm. 
> 
> Toshi
> 
> 
> 
> On Wed, Aug 24, 2016 at 4:56 PM, René Sterental  > wrote:
> Hi all,
> 
> Perusing the RBW website, I came upon the Tektro R559 that come on the Homer 
> and Cheviot since the Silver brakes stopped being. I'm not sure if they're 
> the same brake as the Silvers I got with my Homer originally, but there was a 
> line there stating that they were good for 650b conversions.
> 
> I measured my 700c and 650b wheels, and there is a 2cm difference in the 
> radius to the braking surface of the rims. Does anyone know if there is that 
> much room to adjust the brake pads on a 700c bike if you put 650b wheels on 
> it?
> 
> I know the BB drops the same 2cm which may create problems, but I'm quite 
> intrigued by this conversion. I haven't yet called RBW to ask, but I wonder 
> if any of you experts who have done conversions in the past know if these 
> brakes would truly allow me to run 650b wheels on one of my 700c bikes.
> 
> Thanks!
> 
> René 
> 
> -- 
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> "RBW Owners Bunch" group.
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> .
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> .
> 
> 
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Re: [RBW] 650b conversion question

[Jim Bronson]

Most likely it will work.  It worked for my bike, a late 90s Riv
Custom (or Road Standard, we're not sure), went from 700x30 Grand Bois
Cypres/no fenders to 650Bx38 with fenders.  The limiting factor on
larger 650B tires on my bike is the clearance from the chainstays,
there's enough clearance at the brakes for larger tires.  This is a
common limitation for many conversions, it can be overcome by dimpling
the chainstays.

The radius difference is actually 19mm all other things being equal
(622-584) /2.  So you're off by 1mm ;)

My frame has 80mm of BB drop so you do need to be careful, but after 3
years I'm pretty used to it and I haven't scraped a pedal in a while.

I would recommend it, if you're limited in clearance on 700c like I was.

-Jim

On Wed, Aug 24, 2016 at 6:56 PM, René Sterental  wrote:
> Hi all,
>
> Perusing the RBW website, I came upon the Tektro R559 that come on the Homer
> and Cheviot since the Silver brakes stopped being. I'm not sure if they're
> the same brake as the Silvers I got with my Homer originally, but there was
> a line there stating that they were good for 650b conversions.
>
> I measured my 700c and 650b wheels, and there is a 2cm difference in the
> radius to the braking surface of the rims. Does anyone know if there is that
> much room to adjust the brake pads on a 700c bike if you put 650b wheels on
> it?
>
> I know the BB drops the same 2cm which may create problems, but I'm quite
> intrigued by this conversion. I haven't yet called RBW to ask, but I wonder
> if any of you experts who have done conversions in the past know if these
> brakes would truly allow me to run 650b wheels on one of my 700c bikes.
>
> Thanks!
>
> René
>
> --
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> "RBW Owners Bunch" group.
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Re: [RBW] 650b conversion question

[Toshi Takeuchi]

I've used the Tektro R559 for multiple 700c to 650b conversions, so they do
work.  The amount of brake reach that is required for the conversion will
depend upon the placement of the brake bolt in relation to the wheel, which
is not fixed from bike to bike, so looking at the wheels themselves will
not give you an answer.  It will also depend upon the width of the rim: the
wider the rim, the less reach required.  Also you can gain a couple mm by
using MTB V-brake thin pads.  People have also shaved a mm or two by filing
the frame at the center bolt.  You can get additional reach using a
Diacompe 750 centerpull brake, but the stopping power is not as effective
as the Tektros in my experience.

--Also the BB does not drop the same 2 cm.  You use wider tires with a
larger radius, so the BB height will go up from the larger tire.  The 650b
x 42mm gives a similar BB height to a 700c x 25mm.

Toshi



On Wed, Aug 24, 2016 at 4:56 PM, René Sterental  wrote:

> Hi all,
>
> Perusing the RBW website, I came upon the Tektro R559 that come on the
> Homer and Cheviot since the Silver brakes stopped being. I'm not sure if
> they're the same brake as the Silvers I got with my Homer originally, but
> there was a line there stating that they were good for 650b conversions.
>
> I measured my 700c and 650b wheels, and there is a 2cm difference in the
> radius to the braking surface of the rims. Does anyone know if there is
> that much room to adjust the brake pads on a 700c bike if you put 650b
> wheels on it?
>
> I know the BB drops the same 2cm which may create problems, but I'm quite
> intrigued by this conversion. I haven't yet called RBW to ask, but I wonder
> if any of you experts who have done conversions in the past know if these
> brakes would truly allow me to run 650b wheels on one of my 700c bikes.
>
> Thanks!
>
> René
>
> --
> You received this message because you are subscribed to the Google Groups
> "RBW Owners Bunch" group.
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[RBW] 650b conversion question

[René Sterental]

Hi all,

Perusing the RBW website, I came upon the Tektro R559 that come on the
Homer and Cheviot since the Silver brakes stopped being. I'm not sure if
they're the same brake as the Silvers I got with my Homer originally, but
there was a line there stating that they were good for 650b conversions.

I measured my 700c and 650b wheels, and there is a 2cm difference in the
radius to the braking surface of the rims. Does anyone know if there is
that much room to adjust the brake pads on a 700c bike if you put 650b
wheels on it?

I know the BB drops the same 2cm which may create problems, but I'm quite
intrigued by this conversion. I haven't yet called RBW to ask, but I wonder
if any of you experts who have done conversions in the past know if these
brakes would truly allow me to run 650b wheels on one of my 700c bikes.

Thanks!

René

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