I've started playing with this..... anyone have any better idea for modeling the weight of a finish than just overriding the weight of the BT, fins and nose cone by some amount?

I modeled the BMS School Rocket and am getting plausible results from the simulations, though the deployment timing vs. apogee seems to be just a little off compared to actual flights. Too bad there's no weightless altimeter I could put on my rocket so as to compare results directly..... Maybe I'll have to model the Estes Star Stryker, for which I have altitude data via the How High.

One other comment: there are the WECO (German) motors available it its motor menu, but they're not on Thrustcurve.org. It makes me wonder where the motor data really came from.

WECO A8-3s are what I got when I ordered a bag of 25 A6-4s from Quest....and, except for the really dirty ejection charges, I like them better than the A6-4s. But that's the subject of another thread .