chain tension question

[open]

So I tightened the chain on my cg125 ( while it was on the centre stand) and thought it was ok, but I realized that the chain is extremely tight when taken off the centre stand and has a couple cm's free play when on!

What should do, and is this normal?
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"Calamity - A more than commonly plain & unmistakable reminder that the affairs of this life are not of our own ordering."

[s]Baotian BT49qt-9 --> Honda CG125 (4 speed) '51 plate ----- 03/11/2012 Mod 2 PASSED! --> Cb500s[/s] Revoked

[Vincent]

Normal - yup. If you can, set it with someone else sitting on the bike.............or leave a bit more slack. An overtightened chain will destroy the sprocket carrier/wheel bearings, or, even worse, destroy the drive shaft bearing.
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Space Is Deep

[GREENI3]

Should be about an inch or inch an 1/4 with the bike on the centre stand.

[Pete.]

What's happened is normal but it's not right as Vincent said. The chain is at it's tightes when the axis of the engine output shaft, swingarm pivot and rear spindle are in line with each other, and that only happens when you are sitting on the bike. Since the shock will be fully extended when the bike is on the stand, that's when the spindle is lowest and the chain is the most slack.

Put it on the sidestand and set it to about 25mm total up/down play.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good