I have a 3-speed sprocket but the "gear chain" (?) is
broke. But, the most outward link has its hole intact.
So I thought I'd insert a keyring into that hole, then
bind a wire to that keyring, pull it all out, and wrap
the wire around a "hook" somewhere on the frame (e.g.,
one of the pieces that hold the chain guard).
That sort of worked, but
1. I don't know how much to pull to get the, say,
middle gear, as I don't feel any clear
"positions". Is it important I hit it exactly,
and if so, how do I do that?
2. What I can see, the keyring has already
expanded just a bit into an oval, so I don't
have a lot of confidence the position will
remain even if I did get it just right.
What is the best way to do this? I don't want to fix
the gears, I'm fine fixing the bike in the sense
turning it into a single speed one.
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