Originally Posted by
machinist42
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.)
I never saw or heard this trick elsewhere before. I've been "saving" cranks this way for many years. (Second "I'm fhe first to do this" myth that has been shattered for me today. Read a documented case of another "triple chainline" fix gear; three chainrings, three cogs, three very different gears.
Ben