surly old man
Join Date: Sep 2006
Location: Carlisle, PA
Bikes: IRO Mark V, Karate Monkey half fat, Trek 620 IGH, Cannondale 26/24 MTB, Amp Research B3, and more.
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chainring spacer question
When playing with the chainline (in setting up a fixed gear bike), I often will shift the chainring from one side of the spider to the other. A couple of questions:
-when the ring is on hte outside, there is a little shoulder at the end of each arm that helps locate the ring on each arm. When I move the ring to the inside, there is no such shoulder. I think that 5 tightened bolts will do enough to keep the ring in place. Opinions?
-Usually spacers have a little shoulder on them that fits snugly into the spider arms. If I switch the ring to the other side and use those spacers they will slop around until each bolt is tightened. This one makes me a tad more worried, but an experienced mechanic I know says that even this is not relevant once the bolts are tightened.
-How long of a spacer(s) can I use between the arm and the ring before the whole thing is just not strong enough to trust? If I need to bring the chainline way in (say, if there is a long BB spindle that I do not feel like changing out) can i just use a couple of spacers on each bolt on the wrong side of the arms?