They're a pain in the butt to clone. I built an E & an F (BT80) when it was OOP. I'm sure the kits are way easier to build. Sweet addition to anyone's fleet.
I have a 54mm version in blue tube that is waiting on me to epoxy the fins on. I think I called it "Arapahoe J" Love this design and now I'll have to pick up one from the Squirrel wrangler.
Nose cone is shorter than the tailcone, for example a Estes 3" Big Daddy Nose Cone has the right shape for an upscale Arapahoe, the BMS/Mercury/Apogee nosecone works for the tailcone (both fit the Estes 3" lightweight airframe which is the same as BMS T300-34), for the fins you just need a pattern to upscale.I’d like to try doing that, how do you “step-up” sizes for nose cone, tubing diameter? Do you use a larger tube/nose cone and then base the fin size on how much larger in size the body is?