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PostPosted: Tue May 28, 2013 4:56 pm 
Old School Grand Master

Joined: Tue Oct 09, 2007 1:55 pm
Posts: 8202
Location: New Forest, UK
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.


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PostPosted: Tue May 28, 2013 5:06 pm 
Dirt Disciple

Joined: Tue May 24, 2011 3:30 pm
Posts: 72
Location: Bolton
Thanks for all the info lads, i've decided to give the rr a miss, more trouble than it's worth.


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PostPosted: Tue May 28, 2013 5:11 pm 
Retro Guru
User avatar

Joined: Thu May 03, 2012 7:13 pm
Posts: 2574
Location: The Cock Inn, Tillett, Herts
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.


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PostPosted: Tue May 28, 2013 5:26 pm 
Dirt Disciple

Joined: Tue May 24, 2011 3:30 pm
Posts: 72
Location: Bolton
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.


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PostPosted: Tue May 28, 2013 5:29 pm 
Old School Hero

Joined: Mon Dec 03, 2007 7:27 pm
Posts: 205
Same thing, i think, rr are great i reckon,more intuitive as both derailers work the same way.


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PostPosted: Tue May 28, 2013 5:32 pm 
Dirt Disciple

Joined: Tue May 24, 2011 3:30 pm
Posts: 72
Location: Bolton
Are you running it with the matching shifters or ordinary shifters.


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PostPosted: Tue May 28, 2013 8:46 pm 
Old School Hero

Joined: Mon Dec 03, 2007 7:27 pm
Posts: 205
matching shifters?


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PostPosted: Tue May 28, 2013 8:49 pm 
BANNED USER
BANNED USER

Joined: Fri Oct 26, 2012 5:15 pm
Posts: 1075
Dual Control shifters:
Image


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PostPosted: Tue May 28, 2013 9:19 pm 
Old School Hero

Joined: Mon Dec 03, 2007 7:27 pm
Posts: 205
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 ^


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PostPosted: Wed May 29, 2013 8:03 pm 
Retro Guru
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Joined: Thu Jun 23, 2011 11:25 pm
Posts: 1785
Location: It's not easy being a dolphin.
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.


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