RADIAL ENGINE PROPELLER LAUNCHER

OK. The engine does not actually run. You provide the motivation through a planetary gear pack with a 1;66 final ratio. Assembly is required. Look for the included documentation. There is a filament cutting fixture included that uses a single edge razor blade or utility knife.You get four propeller options. The small one spins up easy, but doesn't move much air. The larger ones need more inertia to get moving.Which one flies the best for you?