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Old December 23rd 17, 06:01 AM posted to rec.bicycles.tech
Frank Krygowski[_2_]
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Default new chain, slack

On Friday, December 22, 2017 at 7:01:07 PM UTC-5, Emanuel Berg wrote:
Frank Krygowski wrote:

This has a couple possible implications.
Here's one: sprockets (especially chainrings
on less expensive bikes) are seldom perfectly
round. Usually you can notice the change in
tension (i.e. change in visible slack) as you
turn the cranks with the bike on a stand.
I suppose it's possible that the first
estimate of chain "tightness" happened with
the chain on a high spot, the next one on
a low spot.


That's true! What spot should you choose, then?

I always put the crank vertically, the one
where I can pull the most.


I set the cranks in the position where the chain is tightest, and make sure
there's at least a tiny amount of slack there.


I haven't thought of the possibility of
overstretching at the other end. But you have
to pull really tight for that to happen, right?


You won't literally stretch the chain no matter what you do. I suppose you
might cause extra wear, though, if you had it excessively tight.

- Frank Krygowski

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