I’ve flown a lot of Q-Jets and quite a few have been flown here at NARAM both on the sport and contest ranges. Aerotech even supplied Q-jet A3-4s for the Fly It-Take It rockets.

In my opinion the A3s and B4s are OK, the C12 is marvelous and the D16 is a lot of fun in the right models. With the progressive time-thrust curve the D16 in particular makes models go really fast, but not much higher than a C because of the increased drag from going really fast. But it IS fun to watch a model continuously accelerate as the motor burns. With the D16 in particular you can really see that.

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Bernard Cawley
NAR 89040 L1 - Life Member
SAM 0061
AMA 42160
KG7AIE