This file prints a gearbox and cover that are sized to fit a 550 brushed or brushless motor. You supply the motor, 2 gears, and stuffing tube with propshaft.
PRINTING: ABS strongly recommended, 30-40% infill, 2mm wall thickness, 3 solid layers top and bottom.
And with the cover on...
**You may make this pump for yourself and friends at-cost, but it is NOT to be used for commercial purposes. Released under the Creative Commons - Attribution - Share Alike license.