T
Tony The Tiger
Guest
Help...this is driving me nuts...
My Ultegra hubs were perfectly silent. I have two bikes with Ultegra. I decided to overhaul the hubs
with new bearings and grease after about 3500 miles of use.
Took the hubs apart, carefully cleaned out all the old grease, discarded the old ball bearings. Used
new grade 25 ball bearings,
1/4" for the rear x 9 each side, 3/16" for the front x 10 each side. Used lots of Finish Line
grease. Retightened the cones for a teeny amt. of play, which disappears when the QR is closed.
Now, on both bikes, there is the sound of "bearing flop" from the rear wheels, a metallic clicking
once per revolution. I know it is the rear because I swapped the front fron another bike and the
noise persisted. I re-did the rear hubs again, couldn't see a thing I had done wrong with either
one, and the noise persists. Tried various degrees of tightening the cones, again no change.
This makes no sense to me. I've done the same procedure numerous times in the past on other bikes
with no problem. Only think I can think of is maybe the ball bearings were not manufactured to
tolerance and that is somehow doing it.
Anyone have any ideas?
Thanks,
TG
My Ultegra hubs were perfectly silent. I have two bikes with Ultegra. I decided to overhaul the hubs
with new bearings and grease after about 3500 miles of use.
Took the hubs apart, carefully cleaned out all the old grease, discarded the old ball bearings. Used
new grade 25 ball bearings,
1/4" for the rear x 9 each side, 3/16" for the front x 10 each side. Used lots of Finish Line
grease. Retightened the cones for a teeny amt. of play, which disappears when the QR is closed.
Now, on both bikes, there is the sound of "bearing flop" from the rear wheels, a metallic clicking
once per revolution. I know it is the rear because I swapped the front fron another bike and the
noise persisted. I re-did the rear hubs again, couldn't see a thing I had done wrong with either
one, and the noise persists. Tried various degrees of tightening the cones, again no change.
This makes no sense to me. I've done the same procedure numerous times in the past on other bikes
with no problem. Only think I can think of is maybe the ball bearings were not manufactured to
tolerance and that is somehow doing it.
Anyone have any ideas?
Thanks,
TG