Bicycle Mechanics - Shimano dura ace wheelset-new, rear hub seems very tight!

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nadimk
06-15-08, 08:36 PM
2008 Scandium tubeless wheelset ridden a few days, but the rear hub seems very tight. It doesn't spin very nicely on the stand and does not have the familiar clicking sound of the pawls. Are the bearings too tight or is this normal and they take time to break in?

Regards,
Nadim
St. Louis


DMF
06-16-08, 12:50 PM
Sounds like it's assembled too tight. Bearings don't need time to break in. But be sure it isn't contacting something when you spin it, like a brake pad.

Why are you commenting on the freehub? Does it work correctly?

nadimk
06-17-08, 01:04 PM
Sounds like it's assembled too tight. Bearings don't need time to break in. But be sure it isn't contacting something when you spin it, like a brake pad.--No rubbing or anything. I backed off the preload on the rear hub and it is spinning better. I am not used to a rear wheel spinning so quietly, but these do. Not the heavy clacking of a Mavic wheel. I don't know how the internal pawl/spring mechanism affects sound, but I assume it's working.

Why are you commenting on the freehub? Does it work correctly?--It works fine.

These wheels are very good. They are noticeably lighter, stiffer yet with better ride quality, and are very responsive to power changes on acceleration and hills. They are great for stop and go riding in traffic. Worth every penny.


jcpom
07-13-08, 11:03 AM
What cassette are you using? I had to use a spacer w/ my Shimano cassette, as it was rubbing against the 7850 wheel hub. Still seems a bit tight when I spin cassette by hand, but rides fine. Really like the wheels, as they seems to accellerate quickly.

BarracksSi
07-13-08, 11:38 AM
Just in case...

If you spin the cassette by hand, it won't spin very much. If you hold the cassette and spin the wheel, the wheel should spin really well.

Also, I have one set of wheels that is absolutely silent -- great if I wanted to be a cop, not so great if I want to be heard (unlike my new-used Fulcrum set :p).

operator
07-13-08, 12:29 PM
If you spin the cassette by hand, it won't spin very much. If you hold the cassette and spin the wheel, the wheel should spin really well.
.

What exactly is this supposed to test?

BarracksSi
07-13-08, 12:36 PM
What exactly is this supposed to test?

It's supposed to test the OP and whether he's holding the wheel and spinning the cassette instead of holding the cassette and spinning the wheel.