Sturmey AWC (II) brake 'clank'
I obtained a brand-new Sturmey-Archer AWC (II) hub, built up a wheel, and put it into service. This hub is the wide-ratio 3-speed with a coaster brake. The shell profile is about the same as the time-tested AW, with extra fittings on the left side associated with the coaster brake.
It shifts pretty well, requires a bit of backpedal when going from 2nd to 1st. The brake seems powerful enough.
The problem is, the brake after application 'clanks' once per revolution of the wheel, with judder transmitted back to the pedal associated with the sound. Sounds like (I imagine) one stationary brake shoe is catching an edge of something that's rotating with the wheel.
Hoping someone has knowledge of this. Will it 'break in' and work better after some use? Is there a simple adjustment or repair I can do without tearing down the wheel? Or, should I tear the wheel down & return it to the dealer?
Don't want to just wait & see because the bike is a refurb of a cousin's childhood ride and is destined for her daughter or niece. They're far away, and once delivered it has to work and continue working, else the bike will probably be discarded.
Thanks in advance - Richard in Milwaukee