Check the spoke tension, trueness and roundness.  You can check relative 
tension by plucking the spokes like a harp.  In a front wheel all the spokes 
should ring out at the same pitch and should not be a dull thud- it should be a 
fairly bright note.  Tension can be checked with a tensiometer, as well, but an 
experienced wheelbuilder could check without very quickly.  Put the wheel in a 
truing stand or in the fork and sight along the brake pads as a guide to 
trueness and roundness as you spin it slowly.

Tim



On Apr 24, 2013, at 9:38 AM, john wrote:
> 
> Is there a way to test the wheel? Test the hub? A set of criteria a mechanic 
> can focus on which would say: "yes, this hub - or wheel - isn't quite right"?
> 
> On Tuesday, April 23, 2013 8:57:12 PM UTC-7, Reid wrote:
> I once replaced a front wheel with a similar "professionally built" wheel on 
> a road bike with 27" wheels. Suddenly the bike shimmied. After much 
> aggravation, I found that the newly built wheel had "settled in," meaning it 
> had become the tiniest bit "flexy." Another wheel builder tightened it up to 
> spec and all was well.
>  
> Reid
>  



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