Join Date: Sep 2012
Location: Park City, UT
Bikes: Hers: Volagi Liscio, Kestrel 200 SCI, Niner Jet9 RDO, Ellsworth Truth. His: Kestrel 200 EMS, Niner Jet9, Psyclewerks Wild Hare. Ours: Paketa V2
Gave up On Campy Shifter/SRAM RD Combo
I just couldn't get even close to satisfactory shifting with or without the Shiftmate #5S. Satisfactory for me being no missed shifts. I pulled the Shimano XTR Shadow long cage derailleur (9spd) off my wife's old mountain bike and gave that a try. I routed the cable on the opposite side of the clamping bolt from normal (inside vs. outside of the bolt for this particular derailleur). This is a trick I've read about through the years to get Campy 10 spd. shifters to work with Shimano derailleurs. It works great. I'd rate it an 8 out of 10. I'd give it a 9 out of 10 except sometimes it is a little slow to drop down off of the largest cog. Here's a link to an explanation of how to do this: http://www.highpath.net/highpath/cycles/info/rear.html
. My setup looks like Figure #4 Narrow pitch.
The shifting is great. With a 11-28 or 12-27 Shimano/SRAM cassette all gear combinations including big-big, little-little are attainable with no danger of damaging the derailleur and no chain slack. I pulled the 11-36 SRAM 10 speed cassette off my wife's new mountain bike to see if it works. Can't cross chain big-big without adding some length to the chain but it shifts onto the 36 cog from the 39t middle or 30t inner chainring just fine. I'd did have to adjust the B screw for the two largest cogs to run right.
Some other bits I've gleaned from the different combinations of derailleurs, cassettes and chains I've tried include: the SRAM Red 12-28 cassette was the poorest shifting regardless of derailleur, The SRAM 11-36 shifted as well as the Shimano cassettes (12-28 and 12-34), the SRAM 10 speed chain shifted better than the KMC 10 speed chain, Campy Record derailleur (short cage) shifted well with the Shimano 12-27 and the SRAM 11-28 cassettes, even without the appropriate Shiftmate installed. I haven't tried a Shimano 10 speed chain yet. I run those on most of my bikes regardless of whose derailleurs I'm using and tend to prefer them though in the past I've felt that the KMCs were equivalent in performance (Not sure, but I think KMC makes Shimano's chains?).
So why wouldn't the Campy shifters and the SRAM RDs work for me? I don't know. Issues that might be contributing could be friciton in the system, cable stretching and rebounding, type of cable being used (Jagwire Ripcord teflon coated stainless steel). The Campy derailleur cable spare I have for my single bike seems more supple than the Jagwire cable I used. I didn't have a Campy cable long enough for our tandem to check that out. Ryan from Jtek thought the cable might be moving on the Shiftmate, but I couldn't document this. I marked the cable and regardless of the number of shifts I did, it always seemed to be in the same spot on the flat of the Shiftmate pulley. Originally I thought the problem might be with the XX derailleur as it is desinged for a 2x setup though couldn't see how this would make a differnce other than how much chain the derailleur could take up. I tried an X0 derailleur which are listed for 2x and 3x setups to check this out and found equally poor performance with the Campy shifters. YMMV.
Last edited by Krenovian; 01-13-13 at 04:37 PM.
Reason: Added material