Singlespeed & Fixed Gear - Bought a new wheelset and need help

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Mikeymk1
08-19-08, 03:14 PM
So..

My Mark V used to be super silent until i got some new wheels. I bought Deep V's and Formulas (of course). Ever since I put them on my rear wheel makes this weird noise. I keep my chain always at around 1/2 to an 1" of play so its not too tight. To top it off, the other night my came off... Luckily I was near the subway. Someone please help me.


Also, my chain gets loose and tight when my crank is in different positions. Someone help!

Noob questions: My chainline looks straight but how do I know if it really is or not?

TempeRider
08-19-08, 10:13 PM
"...my chain gets loose and tight when my crank is in different positions..."

Your chain ring is not centered

"...My chainline looks straight but how do I know if it really is or not?.."

Check out sheldonbrown.com - his articles on doing a fixed gear conversion include info on both how to center a chain ring, and he has a whole article on chainline.
fluidworks
08-19-08, 10:40 PM
It's not that the chainring isn't centered, but many chainrings aren't perfectly concentric, and will therefore have positions where the chain is tighter and looser.

FSAS/SS/FG
03-31-09, 06:16 PM
There is also a possibility that your chainring or cog is bent out of shape. Also, your chain could be stretched or not pulled to correct tension, generally it is a good idea to have a good amount of tension to avoid having your chain come off while riding.
REMspeedwagon
03-31-09, 09:10 PM
you might be running too much chain tension.
you shouldn't have any 'tight' spots.

generally you should run your chain just tight enough so it doesn't fall off while riding.