[RBW] Re: That new rear derailer

2022-06-07 Thread R. Alexis
This rapid rise deraileur sounds and looks intriguing. I have a couple of 
Shimano RD-C201 Mega-Range Rear Derailleur 8-Speed, Rapid Rise Silver. I 
have wanted to try it, but don't have anything to do so on in my personal 
use stable. My put it on some junk bike I have just for fun. Look forward 
to what the final product will look like once done. 

Reginald Alexis

On Friday, April 29, 2022 at 7:22:13 PM UTC-5 Johnny Alien wrote:

> Big pulley and rapid rise. Gonna buy a couple of these.
> [image: Screen Shot 2022-04-29 at 8.21.30 PM.png]
>

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Re: [RBW] Re: That new rear derailer

2022-05-17 Thread brendonoid
I finally got around to reading the latest blahg and those last few images 
show that Grant is tantalizingly close to solving the exposed barrel 
adjuster problem that Shimano never solved. Very interesting.

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Re: [RBW] Re: That new rear derailer

2022-05-04 Thread Jon Dukeman
Not sure if this is the answer you are looking for.
I removed my 9 spd Altus and replaced it with a 9spd Shimano XT rapid rise
derailuer. I'm using Microshift 9 speed indexing thumb shifters that work
great with11- 36 cassette Front derailuer is friction. Silver 38×24 cranks
I did not have to do anything to the chain length.
I really like having front & rear shifters move the same way for high and
low gears.

On Wed, May 4, 2022, 11:23 AM Corwin  wrote:

> Not to belabor the point - but...
>
> My question was not "Will the new derailer index?". My question was "How
> many people that disdain rapid rise have actually tried it?" Based on my
> experience using drivetrain components not matched [or not quite matched]
> for each other, I am not likely to try indexing on a derailer not
> specifically designed to index. I do think rapid rise is unfairly maligned.
>
> Regards,
>
> Corwin
>
> On Monday, May 2, 2022 at 8:33:09 AM UTC-7 Bill Lindsay wrote:
>
>> iamkeith followed up, saying: "I wish I could find the old Blahg or
>> Peeking through the Knothole or Reader article where they were tossing
>> around the idea of the reversible spring.  It seemed so genius and simple
>> to me.   Though I suspect you're right - it probably wasn't simple at all."
>>
>> I think the idea of a reversible action rear derailer would be super
>> cute.  As a feature it's a strong 'nice to have'.  The problem is that you
>> can't achieve that feature with a normal Cable+return spring mechanism
>> unless the derailer itself is made up of parts that can be disassembled and
>> reassembled.  If we made that feature (reversibility) a "MUST HAVE", then
>> the way to achieve it would be to ditch the traditional mechanism.  We'd
>> design a desmodrmic actuation method.  This means we actively move it in
>> both directions and there is no return spring.  Old french rear derailers,
>> made famous by Bicycle Quarterly had a continuous loop of cable actuating
>> the rear der.  You could take your 1950's Rene Herse and give it a SICK
>> Grant Pedersen flavor by reinstalling the cable in a figure 8: now it's
>> Rapid Rise Rene!  Alternatively, one could fashion a hydraulic actuation
>> method that pushes the RD in each direction.  It's trivial to insert a
>> control valve that flips this flow and makes it Rapid Rise Hydro!
>>
>> Either one would be fun projects.  I've got pretty copious design notes
>> on both of the above.
>>
>> Bill Lindsay
>> El Cerrito, CA
>>
>> On Sunday, May 1, 2022 at 2:49:24 PM UTC-7 iamkeith wrote:
>>
>>> On Sunday, May 1, 2022 at 2:25:31 PM UTC-6 Bill Lindsay wrote:
>>>
 iamkeith asked one question and then implied a second question by
 stating a wonder.
 The question:

>>>
>>> I don't always do as good of a Job as Bill at making the message-posting
>>> sequence as clear as Bill does, but my message - and rhetorical query of my
>>> own - was mostly meant as a response to Corwin's question.  My point was
>>> that I too suspect indexing might actually work for those who want it -
>>> though there's no way I could know for sure yet.   I was just hoping
>>> somebody might.   My other point was that I agree with Corwin saying that
>>> there's absolutely nothing to "hate" about rapid-rise.   But both options
>>> are still nice to have.  Horses for courses.
>>>
>>>
>>>  A convertible Rivendell RD would achieve what?  It would allow people
 who love Rivendell but hate RapidRise to spend extra money on a Rivendell
 RD, but flip it back to work the same as a cheap Shimano Altus that is
 already awesome.  I don't see any point in that.


>>> Well, to me, it would offer an option to continue getting what will be
>>> presumably HIGH-quality and presumably polished silver,  normal-rise
>>> derailleurs - as opposed to
>>> perfectly-functional-but-cheap-and-not-attractive Altus derailleurs - which
>>> could help me keep my old (and new) bikes running with my preferred 7, 8
>>> and 9 speed drivetrains.  I've long since tired of cruising ebay, looking
>>> for obsolete parts, but I like what I like.  It would be wonderful to have
>>> a new and in-productcion option available.  And "yes," supporting Riv would
>>> just makes it that much better.  Not saying I won't buy one or more anyway
>>> - just daydreaming out loud.
>>>
>>> I wish I could find the old Blahg or Peeking through the Knothole or
>>> Reader article where they were tossing around the idea of the reversible
>>> spring.  It seemed so genius and simple to me.   Though I suspect you're
>>> right - it probably wasn't simple at all.
>>>
>>>
>>>
>>>
>>>
>>>
 Bill Lindsay
 El Cerrito, CA



 On Sunday, May 1, 2022 at 12:30:24 PM UTC-7 iamkeith wrote:

> Is there a reason this derailleur couldn't be used with index shifters
> if someone was so inclined?  Grant said they copied the parallelogram
> geometry from Shimano.  I assumed that meant it had a 1.66:1 cable pull
> ratio, so any index shifter up through 

[RBW] Re: That new rear derailer

2022-05-04 Thread Corwin
Not to belabor the point - but...

My question was not "Will the new derailer index?". My question was "How 
many people that disdain rapid rise have actually tried it?" Based on my 
experience using drivetrain components not matched [or not quite matched] 
for each other, I am not likely to try indexing on a derailer not 
specifically designed to index. I do think rapid rise is unfairly maligned.

Regards,

Corwin

On Monday, May 2, 2022 at 8:33:09 AM UTC-7 Bill Lindsay wrote:

> iamkeith followed up, saying: "I wish I could find the old Blahg or 
> Peeking through the Knothole or Reader article where they were tossing 
> around the idea of the reversible spring.  It seemed so genius and simple 
> to me.   Though I suspect you're right - it probably wasn't simple at all."
>
> I think the idea of a reversible action rear derailer would be super 
> cute.  As a feature it's a strong 'nice to have'.  The problem is that you 
> can't achieve that feature with a normal Cable+return spring mechanism 
> unless the derailer itself is made up of parts that can be disassembled and 
> reassembled.  If we made that feature (reversibility) a "MUST HAVE", then 
> the way to achieve it would be to ditch the traditional mechanism.  We'd 
> design a desmodrmic actuation method.  This means we actively move it in 
> both directions and there is no return spring.  Old french rear derailers, 
> made famous by Bicycle Quarterly had a continuous loop of cable actuating 
> the rear der.  You could take your 1950's Rene Herse and give it a SICK 
> Grant Pedersen flavor by reinstalling the cable in a figure 8: now it's 
> Rapid Rise Rene!  Alternatively, one could fashion a hydraulic actuation 
> method that pushes the RD in each direction.  It's trivial to insert a 
> control valve that flips this flow and makes it Rapid Rise Hydro!  
>
> Either one would be fun projects.  I've got pretty copious design notes on 
> both of the above.  
>
> Bill Lindsay
> El Cerrito, CA 
>
> On Sunday, May 1, 2022 at 2:49:24 PM UTC-7 iamkeith wrote:
>
>> On Sunday, May 1, 2022 at 2:25:31 PM UTC-6 Bill Lindsay wrote:
>>
>>> iamkeith asked one question and then implied a second question by 
>>> stating a wonder.
>>> The question:
>>>
>>
>> I don't always do as good of a Job as Bill at making the message-posting 
>> sequence as clear as Bill does, but my message - and rhetorical query of my 
>> own - was mostly meant as a response to Corwin's question.  My point was 
>> that I too suspect indexing might actually work for those who want it - 
>> though there's no way I could know for sure yet.   I was just hoping 
>> somebody might.   My other point was that I agree with Corwin saying that 
>> there's absolutely nothing to "hate" about rapid-rise.   But both options 
>> are still nice to have.  Horses for courses.
>>
>>
>>  A convertible Rivendell RD would achieve what?  It would allow people 
>>> who love Rivendell but hate RapidRise to spend extra money on a Rivendell 
>>> RD, but flip it back to work the same as a cheap Shimano Altus that is 
>>> already awesome.  I don't see any point in that.  
>>>
>>>
>> Well, to me, it would offer an option to continue getting what will be 
>> presumably HIGH-quality and presumably polished silver,  normal-rise 
>> derailleurs - as opposed to 
>> perfectly-functional-but-cheap-and-not-attractive Altus derailleurs - which 
>> could help me keep my old (and new) bikes running with my preferred 7, 8 
>> and 9 speed drivetrains.  I've long since tired of cruising ebay, looking 
>> for obsolete parts, but I like what I like.  It would be wonderful to have 
>> a new and in-productcion option available.  And "yes," supporting Riv would 
>> just makes it that much better.  Not saying I won't buy one or more anyway 
>> - just daydreaming out loud.
>>
>> I wish I could find the old Blahg or Peeking through the Knothole or 
>> Reader article where they were tossing around the idea of the reversible 
>> spring.  It seemed so genius and simple to me.   Though I suspect you're 
>> right - it probably wasn't simple at all.
>>
>>
>>
>>
>>  
>>
>>> Bill Lindsay
>>> El Cerrito, CA
>>>
>>>
>>>
>>> On Sunday, May 1, 2022 at 12:30:24 PM UTC-7 iamkeith wrote:
>>>
 Is there a reason this derailleur couldn't be used with index shifters 
 if someone was so inclined?  Grant said they copied the parallelogram 
 geometry from Shimano.  I assumed that meant it had a 1.66:1 cable pull 
 ratio, so any index shifter up through 9 speed, with a corresponding 
 number 
 of detents, should work.  The only issue should be that the gear numbers 
 on 
 the shifter will be backwards.

 What I keep wondering - and nobody ever answers - is what happened to 
 the original idea of making these so that the spring could be moved to the 
 opposite corners of the parallelogram, so that it could function in EITHER 
 a high-normal or low-normal mode.  I hope they're doing that.   I don't 
 dis-like rapid 

[RBW] Re: That new rear derailer

2022-05-02 Thread Bill Lindsay
iamkeith followed up, saying: "I wish I could find the old Blahg or Peeking 
through the Knothole or Reader article where they were tossing around the 
idea of the reversible spring.  It seemed so genius and simple to me.  
 Though I suspect you're right - it probably wasn't simple at all."

I think the idea of a reversible action rear derailer would be super cute.  
As a feature it's a strong 'nice to have'.  The problem is that you can't 
achieve that feature with a normal Cable+return spring mechanism unless the 
derailer itself is made up of parts that can be disassembled and 
reassembled.  If we made that feature (reversibility) a "MUST HAVE", then 
the way to achieve it would be to ditch the traditional mechanism.  We'd 
design a desmodrmic actuation method.  This means we actively move it in 
both directions and there is no return spring.  Old french rear derailers, 
made famous by Bicycle Quarterly had a continuous loop of cable actuating 
the rear der.  You could take your 1950's Rene Herse and give it a SICK 
Grant Pedersen flavor by reinstalling the cable in a figure 8: now it's 
Rapid Rise Rene!  Alternatively, one could fashion a hydraulic actuation 
method that pushes the RD in each direction.  It's trivial to insert a 
control valve that flips this flow and makes it Rapid Rise Hydro!  

Either one would be fun projects.  I've got pretty copious design notes on 
both of the above.  

Bill Lindsay
El Cerrito, CA 

On Sunday, May 1, 2022 at 2:49:24 PM UTC-7 iamkeith wrote:

> On Sunday, May 1, 2022 at 2:25:31 PM UTC-6 Bill Lindsay wrote:
>
>> iamkeith asked one question and then implied a second question by stating 
>> a wonder.
>> The question:
>>
>
> I don't always do as good of a Job as Bill at making the message-posting 
> sequence as clear as Bill does, but my message - and rhetorical query of my 
> own - was mostly meant as a response to Corwin's question.  My point was 
> that I too suspect indexing might actually work for those who want it - 
> though there's no way I could know for sure yet.   I was just hoping 
> somebody might.   My other point was that I agree with Corwin saying that 
> there's absolutely nothing to "hate" about rapid-rise.   But both options 
> are still nice to have.  Horses for courses.
>
>
>  A convertible Rivendell RD would achieve what?  It would allow people who 
>> love Rivendell but hate RapidRise to spend extra money on a Rivendell RD, 
>> but flip it back to work the same as a cheap Shimano Altus that is already 
>> awesome.  I don't see any point in that.  
>>
>>
> Well, to me, it would offer an option to continue getting what will be 
> presumably HIGH-quality and presumably polished silver,  normal-rise 
> derailleurs - as opposed to 
> perfectly-functional-but-cheap-and-not-attractive Altus derailleurs - which 
> could help me keep my old (and new) bikes running with my preferred 7, 8 
> and 9 speed drivetrains.  I've long since tired of cruising ebay, looking 
> for obsolete parts, but I like what I like.  It would be wonderful to have 
> a new and in-productcion option available.  And "yes," supporting Riv would 
> just makes it that much better.  Not saying I won't buy one or more anyway 
> - just daydreaming out loud.
>
> I wish I could find the old Blahg or Peeking through the Knothole or 
> Reader article where they were tossing around the idea of the reversible 
> spring.  It seemed so genius and simple to me.   Though I suspect you're 
> right - it probably wasn't simple at all.
>
>
>
>
>  
>
>> Bill Lindsay
>> El Cerrito, CA
>>
>>
>>
>> On Sunday, May 1, 2022 at 12:30:24 PM UTC-7 iamkeith wrote:
>>
>>> Is there a reason this derailleur couldn't be used with index shifters 
>>> if someone was so inclined?  Grant said they copied the parallelogram 
>>> geometry from Shimano.  I assumed that meant it had a 1.66:1 cable pull 
>>> ratio, so any index shifter up through 9 speed, with a corresponding number 
>>> of detents, should work.  The only issue should be that the gear numbers on 
>>> the shifter will be backwards.
>>>
>>> What I keep wondering - and nobody ever answers - is what happened to 
>>> the original idea of making these so that the spring could be moved to the 
>>> opposite corners of the parallelogram, so that it could function in EITHER 
>>> a high-normal or low-normal mode.  I hope they're doing that.   I don't 
>>> dis-like rapid rise at all, but I have a lot of bikes and every time I get 
>>> on my one that has it (Susie), I shift the wrong direction by habit if I'm 
>>> in a crux move.  It would be nice to have both options.
>>>
>>> On Sunday, May 1, 2022 at 1:18:50 PM UTC-6 Corwin wrote:
>>>
 I tried rapid rise last time I was in Walnut Creek. I really liked it. 
 I ditched friction about ten years ago though. Dislike friction for the 
 same reason I like rapid rise: Hills! The San Francisco Bay Area is the 
 home of long hills, steep hills and long, steep hills. I can't count the 
 times I have been grind

[RBW] Re: That new rear derailer

2022-05-02 Thread brendonoid
You can't just flip the spring on a derailleur. You need to change where 
the cable is pulling from and where it is attached. Non-trivial since it is 
built into the single molded top part. Where the barrel adjuster is 
attached on a rapid rise derailleur is actually the biggest flaw in the 
design and I suspect *ACTUALLY* the main reason Shimano gave up on it in 
the end. Evidenced by their shift to the 'shadow' layout, specifically 
designed to limit a derailleurs exposure beyond the frame, limiting damage 
from drops and trail debris.
I love the rapid rise derailleur that I've used but a single fall my bike 
experienced from a gust of wind in a car park smashed the barrel adjuster 
and bent the derailleur hanger. The rest of the bike received zero damage 
other than a scuff on bar tape.That is a very simple problem that a large 
parts manufacturer like Shimano would have got sick of covering warranties 
on.

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[RBW] Re: That new rear derailer

2022-05-01 Thread iamkeith


On Sunday, May 1, 2022 at 2:25:31 PM UTC-6 Bill Lindsay wrote:

> iamkeith asked one question and then implied a second question by stating 
> a wonder.
> The question:
>

I don't always do as good of a Job as Bill at making the message-posting 
sequence as clear as Bill does, but my message - and rhetorical query of my 
own - was mostly meant as a response to Corwin's question.  My point was 
that I too suspect indexing might actually work for those who want it - 
though there's no way I could know for sure yet.   I was just hoping 
somebody might.   My other point was that I agree with Corwin saying that 
there's absolutely nothing to "hate" about rapid-rise.   But both options 
are still nice to have.  Horses for courses.


 A convertible Rivendell RD would achieve what?  It would allow people who 
> love Rivendell but hate RapidRise to spend extra money on a Rivendell RD, 
> but flip it back to work the same as a cheap Shimano Altus that is already 
> awesome.  I don't see any point in that.  
>
>
Well, to me, it would offer an option to continue getting what will be 
presumably HIGH-quality and presumably polished silver,  normal-rise 
derailleurs - as opposed to 
perfectly-functional-but-cheap-and-not-attractive Altus derailleurs - which 
could help me keep my old (and new) bikes running with my preferred 7, 8 
and 9 speed drivetrains.  I've long since tired of cruising ebay, looking 
for obsolete parts, but I like what I like.  It would be wonderful to have 
a new and in-productcion option available.  And "yes," supporting Riv would 
just makes it that much better.  Not saying I won't buy one or more anyway 
- just daydreaming out loud.

I wish I could find the old Blahg or Peeking through the Knothole or Reader 
article where they were tossing around the idea of the reversible spring.  
It seemed so genius and simple to me.   Though I suspect you're right - it 
probably wasn't simple at all.




 

> Bill Lindsay
> El Cerrito, CA
>
>
>
> On Sunday, May 1, 2022 at 12:30:24 PM UTC-7 iamkeith wrote:
>
>> Is there a reason this derailleur couldn't be used with index shifters if 
>> someone was so inclined?  Grant said they copied the parallelogram geometry 
>> from Shimano.  I assumed that meant it had a 1.66:1 cable pull ratio, so 
>> any index shifter up through 9 speed, with a corresponding number of 
>> detents, should work.  The only issue should be that the gear numbers on 
>> the shifter will be backwards.
>>
>> What I keep wondering - and nobody ever answers - is what happened to the 
>> original idea of making these so that the spring could be moved to the 
>> opposite corners of the parallelogram, so that it could function in EITHER 
>> a high-normal or low-normal mode.  I hope they're doing that.   I don't 
>> dis-like rapid rise at all, but I have a lot of bikes and every time I get 
>> on my one that has it (Susie), I shift the wrong direction by habit if I'm 
>> in a crux move.  It would be nice to have both options.
>>
>> On Sunday, May 1, 2022 at 1:18:50 PM UTC-6 Corwin wrote:
>>
>>> I tried rapid rise last time I was in Walnut Creek. I really liked it. I 
>>> ditched friction about ten years ago though. Dislike friction for the same 
>>> reason I like rapid rise: Hills! The San Francisco Bay Area is the home of 
>>> long hills, steep hills and long, steep hills. I can't count the times I 
>>> have been grinding up a hill with a derailleur in friction only to have my 
>>> rear derailleur decide I was in the wrong gear and shift for me.
>>>
>>> But rapid rise? It makes it trivial to get to a bigger cog. Just bought 
>>> a rapid rise derailleur for my new Roadeo. Up till recently, I could not 
>>> see any point in rapid rise. Now that I have tried it - it makes perfect 
>>> sense. I wonder how many people that disdain rapid rise have actually tried 
>>> it?
>>>
>>> Namaste,
>>>
>>> Corwin
>>>
>>> On Saturday, April 30, 2022 at 7:33:25 PM UTC-7 Ray Varella wrote:
>>>
 I’m definitely in for at least one. 

 I’m also curious about the V-brakes. The feature of being able to open 
 far enough to clear a fat tire has me sold. 

 Ray

 On Saturday, April 30, 2022 at 7:33:54 AM UTC-7 Pancake wrote:

> From the Blahh:
> “Yesterday our first sample rear derailer was sent to us from ye olde 
> People's Republic of China, made by the same people who've made the 
> derailers many of you are riding with now, assuming they are not Shimano 
> or 
> Microshift or Campagnolo. They made it according to our design, which 
> borrowed some of its geometry from Shimano's Rapid Rise derailers, which 
> I 
> ordinarily wouldn't do, but justify now because Shimano has discontinued 
> this style of derailer, and it's too good to be extinct. If Shimano 
> decides 
> to make them again, which NO WAY, they'd have to do it before we sink 
> tons 
> of money and have to stop and disappoint the factory and lose all kinds 
> 

[RBW] Re: That new rear derailer

2022-05-01 Thread Bill Lindsay
iamkeith asked one question and then implied a second question by stating a 
wonder.
The question:
"Is there a reason this derailleur couldn't be used with index shifters if 
someone was so inclined?"

There is no reason somebody could not use this derailer with index shifters 
if they were so inclined.  Whether or not it actually indexes to that 
person's liking would be up to them.  I know more than most people about 
the math and geometry of derailers and it's nasty math.  When Riv says it 
won't index well, I expect they have no idea whether it will index well, 
and at some point they'll try it.  I do not expect it to index well, mainly 
because I expect that the paralellogram will be steeper than most/all 
Shimano models, so even if the four legs are identical to Shimano, the 
cable rates needed will be different in relation to the greater tilt of the 
paralellogram.

The wonder:
"What I keep wondering - and nobody ever answers - is what happened to the 
original idea of making these so that the spring could be moved to the 
opposite corners of the parallelogram, so that it could function in EITHER 
a high-normal or low-normal mode"

If they suggested that they were going to try to do that, my guess is that 
they had that on a list of "nice to have" features but had not yet begun 
the actual design task of trying to think about whether such a thing was 
even feasible.  (#narrator voice -- It's not feasible)  The cable anchor 
hangs off the rear leg of the paralellogram in RapidRise and hangs off the 
front leg in "normal rise".  Take a good look at Shimano models side by 
side and it's clear a derailer can't have both at the same time, so that 
arm thing would have to be removable and remountable, but the thing is 
small, so you'd strip bolts or lose pieces.  It would be an immensely 
complex adder to a project that has already dragged on for several years.  
A convertible Rivendell RD would achieve what?  It would allow people who 
love Rivendell but hate RapidRise to spend extra money on a Rivendell RD, 
but flip it back to work the same as a cheap Shimano Altus that is already 
awesome.  I don't see any point in that.  

Bill Lindsay
El Cerrito, CA



On Sunday, May 1, 2022 at 12:30:24 PM UTC-7 iamkeith wrote:

> Is there a reason this derailleur couldn't be used with index shifters if 
> someone was so inclined?  Grant said they copied the parallelogram geometry 
> from Shimano.  I assumed that meant it had a 1.66:1 cable pull ratio, so 
> any index shifter up through 9 speed, with a corresponding number of 
> detents, should work.  The only issue should be that the gear numbers on 
> the shifter will be backwards.
>
> What I keep wondering - and nobody ever answers - is what happened to the 
> original idea of making these so that the spring could be moved to the 
> opposite corners of the parallelogram, so that it could function in EITHER 
> a high-normal or low-normal mode.  I hope they're doing that.   I don't 
> dis-like rapid rise at all, but I have a lot of bikes and every time I get 
> on my one that has it (Susie), I shift the wrong direction by habit if I'm 
> in a crux move.  It would be nice to have both options.
>
> On Sunday, May 1, 2022 at 1:18:50 PM UTC-6 Corwin wrote:
>
>> I tried rapid rise last time I was in Walnut Creek. I really liked it. I 
>> ditched friction about ten years ago though. Dislike friction for the same 
>> reason I like rapid rise: Hills! The San Francisco Bay Area is the home of 
>> long hills, steep hills and long, steep hills. I can't count the times I 
>> have been grinding up a hill with a derailleur in friction only to have my 
>> rear derailleur decide I was in the wrong gear and shift for me.
>>
>> But rapid rise? It makes it trivial to get to a bigger cog. Just bought a 
>> rapid rise derailleur for my new Roadeo. Up till recently, I could not see 
>> any point in rapid rise. Now that I have tried it - it makes perfect sense. 
>> I wonder how many people that disdain rapid rise have actually tried it?
>>
>> Namaste,
>>
>> Corwin
>>
>> On Saturday, April 30, 2022 at 7:33:25 PM UTC-7 Ray Varella wrote:
>>
>>> I’m definitely in for at least one. 
>>>
>>> I’m also curious about the V-brakes. The feature of being able to open 
>>> far enough to clear a fat tire has me sold. 
>>>
>>> Ray
>>>
>>> On Saturday, April 30, 2022 at 7:33:54 AM UTC-7 Pancake wrote:
>>>
 From the Blahh:
 “Yesterday our first sample rear derailer was sent to us from ye olde 
 People's Republic of China, made by the same people who've made the 
 derailers many of you are riding with now, assuming they are not Shimano 
 or 
 Microshift or Campagnolo. They made it according to our design, which 
 borrowed some of its geometry from Shimano's Rapid Rise derailers, which I 
 ordinarily wouldn't do, but justify now because Shimano has discontinued 
 this style of derailer, and it's too good to be extinct. If Shimano 
 decides 
 to make them again, 

[RBW] Re: That new rear derailer

2022-05-01 Thread iamkeith
Is there a reason this derailleur couldn't be used with index shifters if 
someone was so inclined?  Grant said they copied the parallelogram geometry 
from Shimano.  I assumed that meant it had a 1.66:1 cable pull ratio, so 
any index shifter up through 9 speed, with a corresponding number of 
detents, should work.  The only issue should be that the gear numbers on 
the shifter will be backwards.

What I keep wondering - and nobody ever answers - is what happened to the 
original idea of making these so that the spring could be moved to the 
opposite corners of the parallelogram, so that it could function in EITHER 
a high-normal or low-normal mode.  I hope they're doing that.   I don't 
dis-like rapid rise at all, but I have a lot of bikes and every time I get 
on my one that has it (Susie), I shift the wrong direction by habit if I'm 
in a crux move.  It would be nice to have both options.

On Sunday, May 1, 2022 at 1:18:50 PM UTC-6 Corwin wrote:

> I tried rapid rise last time I was in Walnut Creek. I really liked it. I 
> ditched friction about ten years ago though. Dislike friction for the same 
> reason I like rapid rise: Hills! The San Francisco Bay Area is the home of 
> long hills, steep hills and long, steep hills. I can't count the times I 
> have been grinding up a hill with a derailleur in friction only to have my 
> rear derailleur decide I was in the wrong gear and shift for me.
>
> But rapid rise? It makes it trivial to get to a bigger cog. Just bought a 
> rapid rise derailleur for my new Roadeo. Up till recently, I could not see 
> any point in rapid rise. Now that I have tried it - it makes perfect sense. 
> I wonder how many people that disdain rapid rise have actually tried it?
>
> Namaste,
>
> Corwin
>
> On Saturday, April 30, 2022 at 7:33:25 PM UTC-7 Ray Varella wrote:
>
>> I’m definitely in for at least one. 
>>
>> I’m also curious about the V-brakes. The feature of being able to open 
>> far enough to clear a fat tire has me sold. 
>>
>> Ray
>>
>> On Saturday, April 30, 2022 at 7:33:54 AM UTC-7 Pancake wrote:
>>
>>> From the Blahh:
>>> “Yesterday our first sample rear derailer was sent to us from ye olde 
>>> People's Republic of China, made by the same people who've made the 
>>> derailers many of you are riding with now, assuming they are not Shimano or 
>>> Microshift or Campagnolo. They made it according to our design, which 
>>> borrowed some of its geometry from Shimano's Rapid Rise derailers, which I 
>>> ordinarily wouldn't do, but justify now because Shimano has discontinued 
>>> this style of derailer, and it's too good to be extinct. If Shimano decides 
>>> to make them again, which NO WAY, they'd have to do it before we sink tons 
>>> of money and have to stop and disappoint the factory and lose all kinds of 
>>> international face. It's complicated. Nobody in Taiwan is interested. 
>>> Nobody in America is capable beyond "theoretically." It sure can't happen 
>>> in Europe. A small CNC machinist is not going to do it, assembly and all, 
>>> for less than a price to us that would mean a price to you of less than 
>>> $800. So please don't punch up at your beloved Rivendell or an unbeloved me 
>>> for "going to China."  China is the only way these are gonna get made 
>>> before Kingdom Come. Your buddy the machinist is not capable of making one 
>>> of these in a form and with a price that will work.”
>>>
>>> I’ll also be ordering at least one of these. I’ve wasted enough dollars 
>>> and hours trying to find a RD that will fit a 11-40t cassettes and keep the 
>>> chain tight with a double crankset (46/30t). This looks like a shinny 
>>> silver bullet solution for a fair price. 
>>>
>>> Does it look like a 11t jockey and 13t pulley?
>>>
>>> On Friday, 29 April 2022 at 17:22:13 UTC-7 Johnny Alien wrote:
>>>
 Big pulley and rapid rise. Gonna buy a couple of these.
 [image: Screen Shot 2022-04-29 at 8.21.30 PM.png]

>>>

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[RBW] Re: That new rear derailer

2022-05-01 Thread Corwin
I tried rapid rise last time I was in Walnut Creek. I really liked it. I 
ditched friction about ten years ago though. Dislike friction for the same 
reason I like rapid rise: Hills! The San Francisco Bay Area is the home of 
long hills, steep hills and long, steep hills. I can't count the times I 
have been grinding up a hill with a derailleur in friction only to have my 
rear derailleur decide I was in the wrong gear and shift for me.

But rapid rise? It makes it trivial to get to a bigger cog. Just bought a 
rapid rise derailleur for my new Roadeo. Up till recently, I could not see 
any point in rapid rise. Now that I have tried it - it makes perfect sense. 
I wonder how many people that disdain rapid rise have actually tried it?

Namaste,

Corwin

On Saturday, April 30, 2022 at 7:33:25 PM UTC-7 Ray Varella wrote:

> I’m definitely in for at least one. 
>
> I’m also curious about the V-brakes. The feature of being able to open far 
> enough to clear a fat tire has me sold. 
>
> Ray
>
> On Saturday, April 30, 2022 at 7:33:54 AM UTC-7 Pancake wrote:
>
>> From the Blahh:
>> “Yesterday our first sample rear derailer was sent to us from ye olde 
>> People's Republic of China, made by the same people who've made the 
>> derailers many of you are riding with now, assuming they are not Shimano or 
>> Microshift or Campagnolo. They made it according to our design, which 
>> borrowed some of its geometry from Shimano's Rapid Rise derailers, which I 
>> ordinarily wouldn't do, but justify now because Shimano has discontinued 
>> this style of derailer, and it's too good to be extinct. If Shimano decides 
>> to make them again, which NO WAY, they'd have to do it before we sink tons 
>> of money and have to stop and disappoint the factory and lose all kinds of 
>> international face. It's complicated. Nobody in Taiwan is interested. 
>> Nobody in America is capable beyond "theoretically." It sure can't happen 
>> in Europe. A small CNC machinist is not going to do it, assembly and all, 
>> for less than a price to us that would mean a price to you of less than 
>> $800. So please don't punch up at your beloved Rivendell or an unbeloved me 
>> for "going to China."  China is the only way these are gonna get made 
>> before Kingdom Come. Your buddy the machinist is not capable of making one 
>> of these in a form and with a price that will work.”
>>
>> I’ll also be ordering at least one of these. I’ve wasted enough dollars 
>> and hours trying to find a RD that will fit a 11-40t cassettes and keep the 
>> chain tight with a double crankset (46/30t). This looks like a shinny 
>> silver bullet solution for a fair price. 
>>
>> Does it look like a 11t jockey and 13t pulley?
>>
>> On Friday, 29 April 2022 at 17:22:13 UTC-7 Johnny Alien wrote:
>>
>>> Big pulley and rapid rise. Gonna buy a couple of these.
>>> [image: Screen Shot 2022-04-29 at 8.21.30 PM.png]
>>>
>>

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[RBW] Re: That new rear derailer

2022-04-30 Thread Ray Varella
I’m definitely in for at least one. 

I’m also curious about the V-brakes. The feature of being able to open far 
enough to clear a fat tire has me sold. 

Ray

On Saturday, April 30, 2022 at 7:33:54 AM UTC-7 Pancake wrote:

> From the Blahh:
> “Yesterday our first sample rear derailer was sent to us from ye olde 
> People's Republic of China, made by the same people who've made the 
> derailers many of you are riding with now, assuming they are not Shimano or 
> Microshift or Campagnolo. They made it according to our design, which 
> borrowed some of its geometry from Shimano's Rapid Rise derailers, which I 
> ordinarily wouldn't do, but justify now because Shimano has discontinued 
> this style of derailer, and it's too good to be extinct. If Shimano decides 
> to make them again, which NO WAY, they'd have to do it before we sink tons 
> of money and have to stop and disappoint the factory and lose all kinds of 
> international face. It's complicated. Nobody in Taiwan is interested. 
> Nobody in America is capable beyond "theoretically." It sure can't happen 
> in Europe. A small CNC machinist is not going to do it, assembly and all, 
> for less than a price to us that would mean a price to you of less than 
> $800. So please don't punch up at your beloved Rivendell or an unbeloved me 
> for "going to China."  China is the only way these are gonna get made 
> before Kingdom Come. Your buddy the machinist is not capable of making one 
> of these in a form and with a price that will work.”
>
> I’ll also be ordering at least one of these. I’ve wasted enough dollars 
> and hours trying to find a RD that will fit a 11-40t cassettes and keep the 
> chain tight with a double crankset (46/30t). This looks like a shinny 
> silver bullet solution for a fair price. 
>
> Does it look like a 11t jockey and 13t pulley?
>
> On Friday, 29 April 2022 at 17:22:13 UTC-7 Johnny Alien wrote:
>
>> Big pulley and rapid rise. Gonna buy a couple of these.
>> [image: Screen Shot 2022-04-29 at 8.21.30 PM.png]
>>
>

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[RBW] Re: That new rear derailer

2022-04-30 Thread Pancake
>From the Blahh:
“Yesterday our first sample rear derailer was sent to us from ye olde 
People's Republic of China, made by the same people who've made the 
derailers many of you are riding with now, assuming they are not Shimano or 
Microshift or Campagnolo. They made it according to our design, which 
borrowed some of its geometry from Shimano's Rapid Rise derailers, which I 
ordinarily wouldn't do, but justify now because Shimano has discontinued 
this style of derailer, and it's too good to be extinct. If Shimano decides 
to make them again, which NO WAY, they'd have to do it before we sink tons 
of money and have to stop and disappoint the factory and lose all kinds of 
international face. It's complicated. Nobody in Taiwan is interested. 
Nobody in America is capable beyond "theoretically." It sure can't happen 
in Europe. A small CNC machinist is not going to do it, assembly and all, 
for less than a price to us that would mean a price to you of less than 
$800. So please don't punch up at your beloved Rivendell or an unbeloved me 
for "going to China."  China is the only way these are gonna get made 
before Kingdom Come. Your buddy the machinist is not capable of making one 
of these in a form and with a price that will work.”

I’ll also be ordering at least one of these. I’ve wasted enough dollars and 
hours trying to find a RD that will fit a 11-40t cassettes and keep the 
chain tight with a double crankset (46/30t). This looks like a shinny 
silver bullet solution for a fair price. 

Does it look like a 11t jockey and 13t pulley?

On Friday, 29 April 2022 at 17:22:13 UTC-7 Johnny Alien wrote:

> Big pulley and rapid rise. Gonna buy a couple of these.
> [image: Screen Shot 2022-04-29 at 8.21.30 PM.png]
>

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