Deacon, you will want to check your wheel to make sure its not loose or too tight. I sheared my brake bolt one time while a car was trying to check me out comming toward me in my lane, I locked up the rear wheel, snapped the bolt, missed the car, and continued to ride for a short ways. All of a sudden my rear hub locked up and my bike started ridding like a fixie with my pedals spinning at speed. My coaster brake had spun four full turns tight, clamping the bearings down so the wheel froze up...Kelly

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I'm racin' Spitfire, turnin', poppin' wheelies, burnin' evil chasin' pop,pop, pop,pop,pop.... (The Pixies-Tony's theme)