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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!

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Old 06-17-14, 01:46 AM   #1
austke
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Shifting on triplets, quads etc. etc.

Our road double has friction shifting and while old works fine.
But our MTB triple has indexed shifting and the front is woeful. Can only ever get good shifting on two of the the three chain rings, either big and middle. Or small and middle. So I bought all new XTR 981. And it's still crap. :/
So I'm now considering pulling it off, and sticking it on my single MTB. And trying friction shifting on it? It just seems that it is too long to get even a new cable and top of the range group set to work reliably. It's getting to the point where no one is keen on riding on it any more. All of my family love riding their singles and our road double, but are no longer willing to persist with the triple. Please help.

Last edited by austke; 06-17-14 at 01:59 AM. Reason: Spelling error.
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Old 06-17-14, 06:56 AM   #2
mstyer
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Compressionless housing becomes more important the longer the cable run. I'm having excellent luck with Jagwire Pro housing which adds a kevlar weave over the standard linear wires in a shift housing. You may have to buy extra long cables separately.

Alternatively, if you're already comfortable spending for XTR, there's XTR Di2 available soon.
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Old 06-17-14, 01:46 PM   #3
austke
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Cheers Mstyer,
I would almost have gone to a single chan ring if it wasn't for the varied terrain around here.
I am very keen to try out the XTR DI2. As long as I can buy extensions for the wiring loom, then I believe it will be the way to go. I already have DI2 and EPS on my singles and love the DI2.
have sort of had the triple parked up with minimal use in the last year. May have to hang out a little longer.
I love the tandems for our family riding as the traffic gives us the extra room, as opposed to be way to close for comfort when out on the singles.
Thanks Austke.
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Old 06-18-14, 06:46 AM   #4
mikeybikey2
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Quote:
Originally Posted by austke View Post
Our road double has friction shifting and while old works fine.
But our MTB triple has indexed shifting and the front is woeful. Can only ever get good shifting on two of the the three chain rings, either big and middle. Or small and middle. So I bought all new XTR 981. And it's still crap. :/
So I'm now considering pulling it off, and sticking it on my single MTB. And trying friction shifting on it? It just seems that it is too long to get even a new cable and top of the range group set to work reliably. It's getting to the point where no one is keen on riding on it any more. All of my family love riding their singles and our road double, but are no longer willing to persist with the triple. Please help.

Check your shifter/derailleur compatability. Bottom bracket might be either too long or short. sheldon brown addresses some of these issues on his website.
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Old 06-18-14, 12:28 PM   #5
chris ss
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another thing to check is that the cable comes to the anchor bolt in the correct way. That will affect the geometry of the cable pull vs the movement of the derailleur.
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Old 06-18-14, 03:42 PM   #6
austke
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Thx fella's,
just upgraded shimano swore bottom pull, with a shimano XTR bottom pull triple chainring compatible derailleur and shifter set up. So would have thought my front shifting would have improved. Unfortunately that's not the case. While I put Jagwire on it, I can't remember if it was the Pro version or not? Sneaking suspicion it mustn't be. Cabling is routed same as it was, which is standard.
Thank you Austke
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Old 06-19-14, 06:22 AM   #7
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Hmmm, the triple (crank) on our triplet (bike) shifts fine. Standard Ultegra STI levers and Ultegra FD (9-speed). Do you have a JumpStop or similar chain watcher mounted on your seat tube? They help, because they allow you to adjust the FD to downshift to the smallest chainring by overshifting a bit.
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