There is a handle at the rear to enable you to operate the rotor and see how these amazing engines work.

I have included inlet and exhaust ports and also spark plug holes.

There's an arrow on the rear to show the direction the rotor would normally be moving.

The height is 12cm .

I will always aim to have some of these printed, assembled and ready to go.

They make a great desk ornament or fidget toy.

I print the parts with very strong settings to ensure longevity.

Thanks