Joined: Dec 2016
Posts: 1,319
Likes: 994
From: Monkey Junction, Wilmington, NC
Bikes: 1964 Schwinn Paramount P-13 DeLuxe, 1964 Schwinn Sport Super Sport, 1972 Falcon San Remo, 1974 Maserati MT-1, 1974 Raleigh International, 1984 Lotus Odyssey, 198? Rossin Ghibli, 1990 LeMond Le Vanquer (sic), 1991 Specialized Allez Transition Pro, +
When All Else Fails, Hit It With Hardwood
Originally Posted by
juvela
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One simple check you can make is to look at the end of the spindle vis a vis the arm after you have it torqued down.
Withdraw whatever fixing bolt you are using and have a look to see that there is some freeboard between the end of the spindle and the seat for the bolt head and washer in the crank arm.
Alloy cotterless arms can only be mounted so many times before they open up a bit to where the end of the spindle can come up to the seating surface for the fixing bolt.
One simple solution when this occurs is to grind a bit off the end of the spindle.
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I cut four matching keystone shapes from an aluminum can and affix them to the spindle; maintains the chainline.
(Edit: Last instance I used roof flashing; the crank had suffered abuse before we met, and required more material.)
Last edited by machinist42; 05-13-18 at 08:11 PM.
Reason: More material.