Originally Posted by
texaspandj
My 87 Miami Vice biopace chainrings are kinda wobbling. Is that a chainring or crankarm problem? How do I fix it?
RJ the Bike Guy's videos just recommend trial fitting the right crank/chainrings on all four surfaces of the square taper spindle and choosing the position that wobbles the least.
Then switch the left crank to suit the position of the right.
Unfortunately I watched that video after I'd already reinstalled the right crank/chainrings so I just left it as-is, with a tiny bit of wobble.