Ye Olde Rocket Plans · 2008. 2. 1. · My model rocket will weigh no more than 453 grams (16 oz.)...
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Ye Olde Rocket Plans · 2008. 2. 1. · My model rocket will weigh no more than 453 grams (16 oz.) at liftoff, and the engines will contain no more than 113 (4 oz.) of propellant,
