Also... how easy are they to handlaunch? I see on Aerojet's website a Whiplash launcher.

Are we talking a heavy throw to launch these, or just a light toss like my Projeti??

For the engine, what's better??? Bigger displacement (Jett FIRE 50) or more rpm's (Nelson 40 FAI)

I'm just looking for pure speed. There's a dude in this area with a Shrike topping around 160-180ish.... I want FASTER

If I could swing a Nelson FAI 40, does it need a riser header to clear the wing, or would the straight pipe give enough clearance?? I figured I'm doing this, I'm going to do it right the first time and get something put together that will turn heads.

Thanks!!
deck