A minimum diameter carbon fiber rocket on an N10000 Vmax motor. Launched on April 18, 2010 at t' Three Oaks launch held by t' Team 1 rocket club. It had a spectacular CATO about 500 feet in t' air just at motor burn out. Blimey! There was some difficulty durin' motor assembly which resulted in a ~2" gap betwixt grains and be likely t' cause.