Grand Nephew's engine

Created by Mark Smith 3 on 19/12/2009 18:16:00

25mmbore 20mm stroke displacer stroke 30mm Flywheel from a trolley of sorts the cooling fan is a heat sink out of some computer part that I joined together and opened out like a fan, the shroud is an adjustable ring for making pavlova or some such. The stack is simply 50x50 Aluminium square tube. It features an aluminium piston with my usual leather cup seal and teflon stuffing box for the displacer shaft. It starts easily once hot and runs at a guess 800 to 1000 rpm. Good guess, that. Actual RPM measued at 816RPM.

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