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Rapid Rise system(10 posts)

Rapid Rise systemHomewrench
Feb 11, 2002 9:26 AM
How can I convert "normal" shimano 9 speed to rapid rise - what do I need to change?

all you need is the rear derailleur (nm)rfsurfer
Feb 11, 2002 10:35 AM
Well..Spoke Wrench
Feb 11, 2002 1:58 PM
XTR rear derailleurs from a few years ago and the ever popular c series rear derailleurs come in rapid-rise configuration, that's all that you need to change.

Now. I picture a group of engineers in the hallowed halls of Shimano talking among themselves. "We have crushed our Suntour competition and have a near monopoly share of the bicycle component market. All of our components work really well. People like our products and mechanics know how to tune and repair them." What can we do to change this?" The answer was rapid rise.
what's the deal with rapid rise?weiwentg
Feb 11, 2002 2:50 PM
My mountain biker friend has a rapid-rise derailleur, and he thinks it's the best thing since sliced bread as it makes downshifting on the hills a whole lot easier. so ... why did the rapid-rise thing not make it to road bikes?
what's the deal with rapid rise?grzy
Feb 11, 2002 4:05 PM
Because it sucks? But that's my whole view on Shimano's "Rapid Failure". Depending on a spring to get you into a larger gear while under full load is problematic. It keeps you from grinding gears, but if you really want it to move now you have only one vote and it may take some time. Fact of the matter is you can buy XTR in either format.

Road bikes don't have the same kind of shifting demands or problems as on a MTB. People who use RR absolutely love it, but they are a small minority. I used it for a while but just found that I was to "programed" to make the conversion. I'm actually in the "none of the above" camp and far prefer the SRAM 9.0SL system. I don't think there's a better setup, but I'm also in a small minority. It's light, super simple and you can blow through the whole range of gears in the blink of an eye with out waiting for your thumb to respond. MTB's are as individual as the people that ride them. The full blown MTB after market is proof that Shimano doesn't have all the answers and that Campy doesn't even know the question.

IMO Rapid Rise is a solution looking for a problem.
"MTB's are as individual as the people that ride them"slow-ron
Feb 12, 2002 6:19 AM
I think your quote is right on the money. I have a rr derailleur on my mountain bike and I love it. I've pounded this derailleur for 3 yrs. and not had a problem yet. I feel that I can more easily grab for gears when I'm climbing steep hills. I've got a strange drive train, however, with Suntour XC Pro top mount shifters so maybe with Shimano index it works differently. One benefit that I can see using this derailleur on a road bike is the long cage. I think the tooth capacity is 32 or 34 and I'm sure it would work with a triple crank.
re: Rapid Rise systemSintesi
Feb 12, 2002 12:18 PM
I maybe wrong but I think you need a RR right shifter as well as the derailler. On RR you use the thumb to downshift (i.e. change into the smaller cogs) since it is the reverse of other Shimano shifting systems this means you can skip down three cogs in one shift but can only upshift one cog at time. I don't think the rachet system in the shifter can be reversed.
NopeSpoke Wrench
Feb 12, 2002 12:24 PM
The shifter's the same with the possible exception of the gear indicator (if any) which has the numbers running the other way. The difference is in how the rear derailleur works.
He's Rightgrzy
Feb 12, 2002 5:22 PM
RR works fine with standard STi shifters - just like it does with standard MTB shifters. The reaer der. works *exactly* opposite.
I err.Sintesi
Feb 13, 2002 7:34 AM
Wasn't thinking it through. Nothing new there. It's the spring that makes the change in the rear derailler right?