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[Yon]

I've a 2014 Zero DS 11.4, a truly awesome bike that's left many awestruck.  Its recently developed a smacking or clapping sound from the rear wheel.  Faster I ride, and I'm talking 10-20mph, the more pronounced the sound.  Son seems to think its the bearings. I was thinking the rear brake, so disconnected the assembly and zip tied it off but the sound was still there. Dealer, almost 300 miles from here, said if it's the bearing that I must have damaged them.  I can't figure how.  Looking for some wisdom. 

[trikester]

My first Zero bike was the 2010 DS. It turned out to have a bad rear bearing from the "git-go". The wheel would not spin freely when off the surface and I thought the brake was dragging for a while. Zero replaced it at no cost.

Trikester

[krash7172]

Take the baseball cards out of the spokes.

Sorry, I couldn't help it. 

[Yon]

I thought bad bearings would be more of a grating sound.

[peter]

Yon, bad bearings are easy to check once you've got the wheel off. If it's bearings, could you just send the wheel to your dealer (ups or fedex or whatever) and get them to replace the bearings? Should be covered by warranty, surely?

My experience is that Zero have some quality control (or assurance?) issues with their suppliers resulting in dud parts - in my case, horn and throttle assembly. Hopefully, it's simple as new bearings.

hth
Peter

[vfkf]

Did you checked that you have not trapped something in the belt?

[zap mc]

jack the wheel up in the air and try and move it to see if there is any slack in the swing arm or bearings and spin it to listen to the bearing and then try the brakes to see if the caliper is snatching or moving