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Re: (ET) Drive chain - how tight?
Thanks to Chris for the thoughts on this - it helped!
Some research in the library with all its books on the floor :-\ suggests
a
standard slack for drive chains of 2-4% of the distance between the
sprocket centers. Some sources say 1-3%. This is to be measured midway
along the chain span.
The R-36's transmission drive sprocket and axle sprocket centers are
abouit
12" apart, so the chain slack should be 1/4" to 3/8".
The amount of pressure to put on the chain for measuring this isn't quite
as clear, so I take it as "a little," or "a gentle finger press." This
ends up being a somewhat snugger chain than I used to set on my red 26"
one-
speed coaster-brake Columbia back in the 1960s.
Someone I read along the way suggested chainsaw bar oil for lubricating
the
chain. I've been using spray-on white lithium grease for that. We'll see
whether the bar oil lasts longer, and how much glop and glump it attracts.
David Roden - Akron, Ohio, USA
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