Harold Bawlzangya Racing

Correct chain slack

I’ve done this process before, but lost the paper I had written the measurement on.  Installing the engine made this a good time to get the measurement again.

With the the top of the shock unbolted:

Correct Chain Tightness (1)

(click picture to enlarge)

I lowered the bike until the countershaft, swingarm bolt and rear axle were in a line.  This is the tightest the chain will be in the travel of the rear wheel:

Correct Chain Tightness (4)

(click picture to enlarge)

I adjusted the rear axle until I got the correct tension on the chain.  Then I lifted the bike until the rear tire was off the ground and measured from the underside of the chain to the swingarm:

Correct Chain Tightness (3)

(click picture to enlarge)

So I can’t loose the number again, this is the correct chain slack I need to adjust for:

Correct Chain Tightness (2)

(click picture to enlarge)

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