Hi,
Monday, July 13, 2009, 4:57:43 PM, Tom Hayes wrote:
> I am running a three-arm cottered Magistroni crank on a bike that I picked
> up from member, Harvey Sachs--thank you Harvey. After riding it a bit, I
> have noticed that one arm only slightly, and not on every turn of the crank,
> grazes--just barely nicks the chainstay. I have readjusted the bottom
> bracket, redid the cotters, and it still nicks that chainstay. Which would
> be better to do, if either would work, place a thin spacer between fixed cup
> and frame forcing the arm out slightly, or replacing the current spindle
> with a slightly longer one assumjing I have another spindle that would work?
Unless you've already done so - check, on some spindles the slots for the cotters are actually a bit wider than the cotter itself, thus allowing a couple mm of lateral adjustment for the cranks. This might just be enough to get rid of the problem. Also, reversing the spindle could be worth a try.
--
Cheers,
Dmitry Yaitskov,
Toronto, Canada.