Jon March
Member
I spent yesterday assembling the axle/swingarm/pinchbolt assemblies.
Question: Why are the threaded ends of the rear axles..
.....and just the innermost washers,
FLAT on one (1) side?
...causing the swing arm to turn the axle nice and smoothly in the middle of the washers...UNTIL the flat spot on the axle hits the flat spot on the (rather loose-fitting) innermost washer..
.....at which time there is a small "thump" as the axle is forced to contact the washer, and then forces the innermost washer (which does not move at all under minor "swing").... to suddenly turn with the shaft as the swing arm travels further (rubbing the flatsided washer between the brass end-bushing and the 2 Belvedere spring washers.)
A person might say, "well, you must be moving the swing arm too much when youre testing it"
Nope - it only takes about 1.5" of upward or downward movement of the swing arm for the flat spot on the axle to hit the flat spot and force the inner washer to move. The springs swing a good bit more than that up & down. Even tho all greased, this causes a metal to metal "thump" that can be felt and heard in the assembly.
Thoughts?
After calling a few places, including GI - all shrugged.
I have a theory - but want to know your thoughts first....
Question: Why are the threaded ends of the rear axles..
.....and just the innermost washers,
FLAT on one (1) side?
...causing the swing arm to turn the axle nice and smoothly in the middle of the washers...UNTIL the flat spot on the axle hits the flat spot on the (rather loose-fitting) innermost washer..
.....at which time there is a small "thump" as the axle is forced to contact the washer, and then forces the innermost washer (which does not move at all under minor "swing").... to suddenly turn with the shaft as the swing arm travels further (rubbing the flatsided washer between the brass end-bushing and the 2 Belvedere spring washers.)
A person might say, "well, you must be moving the swing arm too much when youre testing it"
Nope - it only takes about 1.5" of upward or downward movement of the swing arm for the flat spot on the axle to hit the flat spot and force the inner washer to move. The springs swing a good bit more than that up & down. Even tho all greased, this causes a metal to metal "thump" that can be felt and heard in the assembly.
Thoughts?
After calling a few places, including GI - all shrugged.
I have a theory - but want to know your thoughts first....