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#Post#: 143--------------------------------------------------
Chain vs kickstart spring
By: Fried Ape Date: November 19, 2014, 5:00 am
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Provided by Godfrey Knight
Some time ago I had trouble with a rattling chain. I tried
adjusting the chain tighter but that didn't work and the chain
ended up too tight.
ﾠ
Looking into the problem more deeply I found that the chain was
rubbing on the kick start return spring and beginning to abrade
it; a situation that couldn't be allowed to continue. The
problem lay with the spring which is a two layer helical spring
used in torsion. The free end of the spring had extended itself
into the area used by the chain and needed to be ' pushed back'
into its own area.
The working solution was to make a large diameter washer, the
o/d of the spring and fit it on the kick start shaft to limit
the extent to which the spring could extend into the chain's
territory. Below are the notes I made after the job was done:-
ﾠFitted washer on kickstart shaft to prevent the starter
return spring being abraded by the chain.
Washer to be fitted 55mm o/dﾠ x 22mm i/dﾠ
xﾠ 3mm thick. Deep chamfer on chain side of o/d.
Method
ﾠ
Remove kick-start/quadrant unit. (not easy.)
Remove existing small dia. washer.
Replace with new large dia. washer; chamfer towards the chain.
Replace kickstart/quadrant unit
This solved the rattling chain problem.
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