Discover the Propellers, Wheels and Rotors from the Service Packs collection - 15 pieces of building excellence.
Tyre 14 x 4 Smoot...
Propeller 4 Blade...
Plate Special 2 x...
Wheel Centre Smal...
Propeller 2 Blade
Plate Special 2 x...
Plate Special 2 x...
Sariel's Bricks & Pets provides an efficiency comparison of 11 LEGO propellers in water, using a custom-built boat to measure thrust. Sariel identifies the 3-blade 9 diameter propeller (part 30332) as the most efficient based on these tests.