Go Back  Bike Forums > Bike Forums > Tandem Cycling
Reload this Page >

rear derailleur

Notices
Tandem Cycling A bicycle built for two. Want to find out more about this wonderful world of tandems? Check out this forum to talk with other tandem enthusiasts. Captains and stokers welcome!

rear derailleur

Old 03-22-11, 08:48 AM
  #1  
Senior Member
Thread Starter
 
Join Date: May 2010
Posts: 87
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked 0 Times in 0 Posts
rear derailleur

Going to replace the rear derailleur on our tandem. Was looking @ the Ultegra - either 6600 or 6700 GS. Not interested in light but durable, is there another derailleur I should consider? Road & Katy trail pleasure riding with a few centuries thrown in. Will be using Ergo shifters and shiftmate.

marc
Mxfarm is offline  
Old 03-22-11, 09:29 AM
  #2  
hors category
 
TandemGeek's Avatar
 
Join Date: Jan 2002
Posts: 7,231
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quoted: 8 Post(s)
Likes: 0
Liked 5 Times in 5 Posts
If you're going the Shiftmate route already, consider going with a SRAM MTB rear derailleur, X7, X9 or X0 (subject to your budget or what you find on sale).

This is the information on the Shiftmate Straight:https://jtekengineering.com/shiftmate_straight.htm

I recently fitted a SRAM X.0 rear derailleur to our road tandem mated to our Campy Ergo 10 shifters via a Shiftmate Straight 5S + Shimano 11X32t 10 speed cassette and the shifting is very crisp and smooth, an improvement over our previous configurations using Campy RDs with and without a conventional, right-angle Shiftmate. More info here, with follow-on anecdotals in the 2nd two updates:

https://tandemgeek.wordpress.com/2011...mpy-ergo-sram/
https://tandemgeek.wordpress.com/2011...-5s-follow-up/
https://tandemgeek.wordpress.com/2011...2nd-follow-up/
TandemGeek is offline  
Old 03-22-11, 11:50 AM
  #3  
Senior Member
 
joe@vwvortex's Avatar
 
Join Date: Jan 2005
Location: Vacaville, CA
Posts: 556

Bikes: Co-Motion Speedster Tandem, S-works 29r, Specialized Tarmac SL4

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Mxfarm
Going to replace the rear derailleur on our tandem. Was looking @ the Ultegra - either 6600 or 6700 GS. Not interested in light but durable, is there another derailleur I should consider? Road & Katy trail pleasure riding with a few centuries thrown in. Will be using Ergo shifters and shiftmate.

marc
I've got the DaVinci modified X9 with an as new Sram 990 11-32 cassette for sale. The X9 I have works directly with the Ergo shifters - no shiftmate needed. Worked great for the 6 or so months we used it but I switched to a full Campy 10 speed. It's like new - will sell both for $100 shipped.
joe@vwvortex is offline  
Old 03-22-11, 03:13 PM
  #4  
Senior Member
 
Join Date: Dec 2009
Posts: 134
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
xtr rd-m952. best ever, but ebay only.
tredlodz is offline  
Old 03-22-11, 04:14 PM
  #5  
Senior Member
 
rdtompki's Avatar
 
Join Date: Nov 2008
Location: Hollister, CA
Posts: 3,957

Bikes: Volagi, daVinci Joint Venture

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 3 Times in 2 Posts
I've recently switched our daVinci from 9 spd. to 10 spd. using a Deore RD with a right angle Shiftmate. While the 10 spd. 11-32 is a definite improvement over the 9 spd, I'm working a ghost shifting problem in the smaller cogs where when I shift down (smaller cog) I get a double-shift and need to shift up. Everything seems fine on the "bench". I'm replacing the cable housing tomorrow since I might have damaged the housing by attaching a bell to my handlebars (partially crushing the housing as it were)

If these changes don't get things working right I'll also switch to SRAM X.0 with a straight shiftmate. And, yes, I also have a modified SRAM RD, but I'm hanging onto it until I'm sure this new-fangled 10 speed stuff works.
rdtompki is offline  
Old 03-22-11, 06:40 PM
  #6  
Senior Member
Thread Starter
 
Join Date: May 2010
Posts: 87
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Liked 0 Times in 0 Posts
Joe,

I'm using 8sp stuff will the X9 work with the 8sp Ergo shifters?

marc
Mxfarm is offline  
Old 03-22-11, 08:24 PM
  #7  
Senior Member
 
waynesulak's Avatar
 
Join Date: Jan 2008
Location: Ft Worth, TX
Posts: 1,971

Bikes: Custom 650B tandem by Bob Brown, 650B tandem converted from Santana Arriva, Santana Noventa, Boulder Bicycle 700C, Gunnar Sport

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 23 Post(s)
Likes: 0
Liked 4 Times in 4 Posts
I have used the appropriate shiftmate with XTR and Campy Centaur RDs both with Campy ergo shifters and 10 speed Shimano Cassettes. Both worked well once I found a way to deal with the cable from slipping through the shiftmate.

If the cable goes slack for any reason the cable slips on the pully and the flat portion of the ****mate moves from the 1 o'clock position and shifting suffers. The only solution I have found is to get it adjusted, then mark the pully so that it is qiuck and easy to return it to the correct position when I feel the need.

We need a way to secure the cable in the shiftmate.
waynesulak is offline  
Old 03-23-11, 07:50 AM
  #8  
Senior Member
 
joe@vwvortex's Avatar
 
Join Date: Jan 2005
Location: Vacaville, CA
Posts: 556

Bikes: Co-Motion Speedster Tandem, S-works 29r, Specialized Tarmac SL4

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 14 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
Originally Posted by Mxfarm
Joe,

I'm using 8sp stuff will the X9 work with the 8sp Ergo shifters?

marc
I don't believe it will as the spacing is different. Time to upgrade!
joe@vwvortex is offline  
Old 03-23-11, 04:05 PM
  #9  
Senior Member
 
rdtompki's Avatar
 
Join Date: Nov 2008
Location: Hollister, CA
Posts: 3,957

Bikes: Volagi, daVinci Joint Venture

Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 3 Times in 2 Posts
Just a note on the 5S Shiftmate for anyone reading this thread: The parts are available as shown on the Jtek website (www.jtekengineering.com), but their website is undergoing an upgrade and these newer parts are not yet linked to their cart. If you need the 5S or any of the straight Shiftmates just give them a call.

On a related note I haven't completely given up on my Shimano/Shiftmate config, but I do think that the shape of the housing loop combined with the right angle shiftmate may create a bit of take-up in the cable as the cable tension increases. I've ordered a SRAM RD and 5S shiftmate and I don't doubt this will be the final configuration.
rdtompki is offline  
Old 03-24-11, 06:17 AM
  #10  
Senior Member
 
Join Date: Sep 2005
Posts: 157
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Likes: 0
Liked 0 Times in 0 Posts
I second this - tho' I haven't tried the Srams mentioned by TandemGeek. Newer models of the xtr don't work as well for me and do not have barrel adjuster where cable enters.
__________________
JayB
JayB is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
bluenote157
Bicycle Mechanics
8
04-13-16 06:42 PM
bebold92
Bicycle Mechanics
6
12-21-14 05:40 AM
Drtumolo
Tandem Cycling
10
08-14-12 08:33 AM
Jeff Wills
Bicycle Mechanics
2
07-02-10 02:48 AM
chriskitch
Bicycle Mechanics
10
04-24-10 10:09 AM

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service -

Copyright © 2024 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.