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I just bought a Shimano UN73 bottom bracket, and I see that is uses a plastic retaining ring for the
left side. I have a couple questions before I install it:
1) is there any disadvantage to the plastic ring, and if so, should I try using the ring from my old
Shimano BB?
2) How should I prep the plastic ring? Do I grease it as I would a steel or alloy ring? I'm putting
the BB in a steel frame.
TIA Michael
Michael-<< I just bought a Shimano UN73 bottom bracket, and I see that is uses a plastic retaining
ring for the left side. I have a couple questions before I install it: >><BR><BR>
Hmmm, guess I gotta take another look at our UN-73, thought the left cup was aluminum...
<< 1) is there any disadvantage to the plastic ring, and if so, should I try using the ring from my
old Shimano BB?
2) How should I prep the plastic ring? Do I grease it as I would a steel or alloy ring? I'm putting
the BB in a steel frame. >><BR><BR>
Not really, tap the right cup off as well, grease inside both and also inside the BB shell of
the frameset.
Peter Chisholm Vecchio's Bicicletteria 1833 Pearl St. Boulder, CO, 80302
(3)440-3535 vecchios.comvecchios.comOpen ↗ "Ruote convenzionali costruite eccezionalmente bene"
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