"When I set up Model Enthusiasts in 2004 the idea was to find out
what people with a Mamod engine needed to get the
engine running as it should.
That's still true today and you can see our catalogue here.
Trevor.
MAMOD PISTON FOR ENGINES
SE1 / SE1A/ SE2 / SE2A / SE3 / SP4 / SP5
SUPPLIED BY MAMOD LTD
Owing to the possibility/likelihood of historical manufacturing variations,
please check the piston is correct for your particular engine.
Here are the dimensions you ought to be sure about:
The piston length = 11.41mm (that's the piece that slides inside the cylinder when running)
The rod length to crank pin hole centre = 64.00mm (not including the piston)
Total length of this piston/rod assembly is therefore 75.41mm.
See 2nd piston photo
See 2nd piston photo
Piston dia. is 7.92mm.