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Old 06-02-2009, 09:55 PM
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ZnsaneRyder ZnsaneRyder is offline
Motorized Bicycle Elite Member
Join Date: Nov 2008
Location: FLORIDA
Posts: 163
Default Re: Went for a 19-mile ride today...

Originally Posted by Outrunner View Post
Actually, it's NOT the sprockets at all. When you put a brand new chain on your
bike, motorcycle, or motor scooter, you will notice that the chain has the same
amount of up and down "play" in the middle of the chain no matter where it's
rotated. What causes the difference in the chain tension, is caused by the
stretching of the chain. Of course the stretching only occurs to the TOP portion
of the chain when you dump your clutch to start your motor, or in motorcycles,
when you pop your clutch to pull a wheelie or fast takeoff from a dead start.The
reason, is that the front engine sprocket is pulling the chain from only the top,
which of course, is connected to the upper portion of the rear sprocket. So all of
the force that is applied to that part of the chain slightly stretch's each link between the front and rear sprockets. Then it gets stretched even more at different locations over a period of time. This results in the uneven tension and
causes a lot of frustration when you try to adjust them.
In my 23 years as a motorcycle mechanic I've changed at least a hundred of them,if not more.
So the chain stretches in parts, that makes sense. Would riding slower, and making attempts to go easy on the chain, help to extend the life of the chain, and have less stretch over time?

Before I had a really stretched out chain, and when I'd tighten it, the chain would wear the teeth on the sprockets. The new chain is better!

Stretched chains are bad!
I'm crazy, and like it that way, I'm ZnsaneRyder


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