The Street > The Bike Shop
Keychain woes?
montymitch:
I recently built up a bike with a fresh drive-train comprised of Keychain, 28t Fang, and 9t Antigram. It wasn't as smooth as I expected when I first built it up, but these things usually need a little break in, so I didn't worry about it.
Yesterday I made a few adjustments and noticed that when the chain is tight, it is tight at the top and bottom of the sprocket, but not the middle. Am I wrong in thinking this is going to wear like mad, like when you use a stretched out chain on a new sprocket? It's a relatively expensive setup I have going and I kinda thought since it's all Odyssey gear I wouldn't have issues like this. Have you guys seen anything similar? Should I pursue warranty or just go ride?
UPDATE:
Problem solved. I swapped my 28t Fang for a 25t C512 and all is well. I prefer the taller gearing, but this runs much smoother and I was able to eliminate a half-link and move my wheel back a smidge which fixed the brake clearance problem I had.
Bunky:
What kind of cranks do you have and do you have the proper spacer in between the cranks and the sprocket?
If the chain is tight when your cranks are in a certain place and only in that certain place, then that is a problem with the sprocket sitting off center on the cranks, and not a problem with the chain. If the chain is tight you'll see that you'll feel the tightness in different areas as you move the cranks around.
montymitch:
No, everything is brand spanking new. Cranks are Thunderbolts with 1 ride on them. It's like the pitch is wrong between the chainwheel and the chain.
Prodigal Son:
Its just the chain. Get a shadow next time.
master:
How loose is the chain on the sprocket (mm of play)? I'm interested to see this.
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