Quest C18-4 Rocket Engine

The Quest C18-4 is a great all-around motor for your typical rockets. It is particularly suited for heavier or larger diameter rockets. It features composite propellant, which has twice the energy as a black powder motor. Same size and diameter as an Estes motor, so it fits all your favorite rockets. But this is for single-stage rockets only, as it cannot be staged.

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The Quest D16-4 is a great all-around motor for your typical rockets. It is particularly suited for lightweight rockets where you want to cause

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C18-4 Q-Jet Model Rocket Engine