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TRIPLE CHAINRINGS ON GIANT TCR 2(3 posts)

TRIPLE CHAINRINGS ON GIANT TCR 2TDA
Apr 11, 2001 6:39 PM
ANYBODY KNOW WETHER YOU CAN PUT A TRIPLE CHAINRING ON THE NEW COMPACT FRAME GIANT TCR2. IT COMES WITH A DOUBLE. MY LBS CALLED GAINT AND THEY SAID IT COULD BUT MAY NOT WORK RIGHT, BECAUSE OF THE SHORT CHAIN STAY LENGTH. I HAVE NEVER HEARD OF THIS. THEY OFFER TRIPLE RINGS ON THEIR OCR LINE AND THE CHAIN STAY LENGTH IS ONLY ABOUT 5MM LONGER. ANY EXPERT MECHANICS ADVICE????????THANKS.
Try lower case (nm)Expert advice
Apr 11, 2001 7:51 PM
A couple of ideas:Spoke Wrench
Apr 12, 2001 8:09 AM
It sounds to me like the issue is extreme chain angles in the crossover gears due to the bike's short chainstays. This will probably show up as chain rubbing on the front derailleur. It might not happen, or you could just consider that rubbing to be a reminder to shift into a more appropriate gear combination.

But what are you trying to accomplish? I assume you are looking for an easier hill climbing gear. When I started thinking about this upgrade, my first thought was that it was something I might do to my own bike, but maybe not on a customer bike due to the possibility of chain rubbing. As I thought about it however, I realized that isn't what I did to my own bike.

You're talking about an expensive upgrade. Crankset, bottom bracket, front derailleur, rear derailleur and chain. You might be able to get almost the same benefit with just a mountain bike cassette, mountain bike rear derailleur and a longer chain. That's what I did on my own bike, then I kept my old, close ratio cassette to use on rides that don't involve steep climbs.