Rapid rise rear mech.

[hamster]

Indeed it lasts as long. The difference is that in RR the spring is used on its own to make a downshift. So it is pushing against chain tension. On a conventional (high-normal) mech, the spring works with chain tension to make an upshift.
A weak spring gives a sluggish up-shift for a conventional mech, but no jumping. A weak RR spring means a jump up the gears every time you stomp on the pedals - usually when you are climbing. Decide accordingly.

 

[montytri]

Thanks for all the info lads, i've decided to give the rr a miss, more trouble than it's worth.

 

[Chopper the ex Copper]

That's what Shimanos customers thought when they defected in droves to SRAM. RR did more for SRAM sales than anymore their own products ever did.

 

[montytri]

I'm getting confused here between rapid rise and reverse action, is there a difference or are they the same.
The mech i have is reverse action.

 

[careful now]

Same thing, i think, rr are great i reckon,more intuitive as both derailers work the same way.

 

[montytri]

Are you running it with the matching shifters or ordinary shifters.

 

[careful now]

matching shifters?

 

[Wasmachineman NL]

Dual Control shifters:

 

[careful now]

I've run 'em with dura-ace 7600 bar end jobbies,and normal rapid fire ones,both were fine and dandy,although not as pimp as those ^

 

[Woz]

Never tried a RR; felt it was solving a non-existent problem on the rear. Better to rely on a cable forced down-shift (bigger sprocket) rather than depend on a spring. Never understood why Shimano didn't put more research on the FD where you could have a good reliable down-shift to the granny regardless of spring strength.