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my chainringmy chainringIdeally, a singlespeed should have a frame with horizontal

dropouts or track-style horizontal fork ends.

With this type of frame, the chain tension is regulated by

moving the rear axle back and forth in the fork ends. If

the chain is too tight, the drive train will bind, perhaps

only at one angle of the pedals (chainwheels are not

usually perfectly concentric). It should be tight as it

can be without binding. If the chain is too loose, it can

fall off, usually at the most inconvenient possible time.

Set the rear axle so that the chain pulls taut at the

tightest part of the cranks' rotation. One at a time,

loosen up each of the stack bolts, and tighten it back

just finger tight. Spin the crank slowly and watch for the

chain to get to its tightest point. Strike the taut chain

lightly with a convenient tool to make the chain ring move

a bit on its spider. Then rotate the crank some more,

finding the new tightest spot, and repeat as necessary.

This takes a little bit of your hands learning how hard to

hit the chain, and how loose to set the stack bolts, but

it is really quite easy to learn.