I have been thinking of a fan cooling system. But, with the rich setting required for good smoke effects comes excellent cooling from all that evaporating excess methanol. Plus, castor oil provides fantastic high temperature lubrication.Stuvon:81572 wrote:when you do eventually get round to encasing the engine you will probably need to consider forced cooling. The engine was originally designed to be forced cooled by an airplane propeller or in an RC car you generally need to keep moving to prevent overheating.
The black coloured engine helps radiate heat, and the frame absorbs quite a bit of the heat too. The engine is only idling and not making much power.
Best wishes,
David.