Radial Engine

This is a Model Radial Engine, it takes about 1.5kg of filament and 3 days to print It has the option to put a elastic band inside to rotate the pistons and main axle after cranking it and uses a 3:1 gear ratio to help BUT due to friction being so high compared to the rubber band I couldn't get this to work properly. Except for the optional elastic band there are no other no printed parts Feel free to ask any questions You will need to slice this yourself but If I was printing it I would use 0.16mm 10%Gyroid infill and tree supports If you like the model but don't want to print it a Like would be greatly appreciate it!! Boost MeBoost me so I can print this :P