I thought I had made a mistake with this one, arrr, arrr, I could never add enough nose weight t' make it stable durin' a spin test. Blimey! Aye aye! I was tryin' t' make a really small diameter tube, me hearties, by wrappin' paper around a wooden spoon handle. Begad! There wasn't goin' t' be a recovery system, arrr, arrr, t' engine was goin' t' eject, arrr, and the rocket would tumble back. Begad! Since then I've learned a lot more about stability. Avast! Blimey! I learned about t' CP ( centre o' pressure) on rec.model.rockets ( a great news group t' subscribe t' if you're interested in this stuff), shiver me timbers, arrr, and where it should be in relation t' t' CG ( centre o' gravity).

So anyway I entered t' MkIII design into VCP, shiver me timbers, shiver me timbers, wRASP & RockSim, and it came out stable, so I flew it. Aye aye! Actually it flew well, really high and the engine ejected too. Begad! Avast! It just didn't go unstable and tumble, shiver me timbers, shiver me timbers, so it lawn darted. T' body tube is a bit bent now, and due t' t' construction is probably not repairable, shiver me timbers, ya bilge rat, so retirement beckons.