Hello:
I am planning a 29mm minimum diameter rocket with goals of mach one and one mile on MPR G engines. The plan is for a 22.5" 29mm BT, lathe-turned basswood nose cone and 1/8" ply clipped delta fins. (Wrasp says it'll do Mach 1.04 on a G80 and 5400' on a G40-10 if I can keep the drag down and the weight under 5 oz. w/o engine.) I've been looking around for ideas on motor retention but not sure of what might work best. I could use a block ring glued at about 6.5" (for an Ellis Mtn G35) with spacers for shorter engines and masking tape friction fit, but I'm wondering if anyone in TRF-land has any better thoughts? Keeping weight and drag down is pretty critical.
Thanks in advance.
George
I am planning a 29mm minimum diameter rocket with goals of mach one and one mile on MPR G engines. The plan is for a 22.5" 29mm BT, lathe-turned basswood nose cone and 1/8" ply clipped delta fins. (Wrasp says it'll do Mach 1.04 on a G80 and 5400' on a G40-10 if I can keep the drag down and the weight under 5 oz. w/o engine.) I've been looking around for ideas on motor retention but not sure of what might work best. I could use a block ring glued at about 6.5" (for an Ellis Mtn G35) with spacers for shorter engines and masking tape friction fit, but I'm wondering if anyone in TRF-land has any better thoughts? Keeping weight and drag down is pretty critical.
Thanks in advance.
George