Zaemo wrote:Can anyone tell me... does the SHORT hex stud go in the top or bottom bracket? When it's in the top position, it fits better despite the box not being straight up and down. When it's in the bottom position, the coil cover hits the fender at the bottom.
I've seen them advertised as 4 1/8" and 4 3/8". My longer one is more like 4 1/4".
Z
Zaemo,
What bike are you working on - I can't remember. I measured what I think are original 64612-55 and 64611-55 and they measure 3-11/16 and 3-7/8, not including the threaded area. These were used from ~1955 up till 1967 at least.
I have what I think are original 64612-52 and 64611-52 (1952-~1954), but they're mounted on my bike, so I'd have to take them off to measure them. They should be the same except for 5/16 NC? threads instead of 3/8 NF? threads, but who knows, they could have changed the thickness of the frame mounts.
Are you working with originals or reproductions?
Dave