Win some, lose some. Over the weekend I launched a 60mm rocket with a candy motor that seemed to be a successful design. The motor sim'ed as an E40. The rocket was constructed with through-the-wall plywood fins, a 60mm x 600mm postage tube and a balsa nosecone. Ejection was with a magnetic apogee detector (purchased from Aerocon Systems). First flight went without a hitch but the second CATO'ed. Both the forward and rear enclosure of the motors failed - appears that the glue may have given way due to overpressurisation. 2nd flight after the jump.