Office of Steam Forum for Model & Toy Steam Gas & Hot Air Engines

I notice that both have been modded, to a single soft spring directly across the governor.
Makes the weights move very smoothly, straight, and "squeeze-free" out when rotated, compared the standard trick of simply removing one of the original two springs.
Certainly a simple mod which will be implemented here as well.

That is certainly true, Classixs, but I still think it is more than the spring tension that allows one of those above  to run so very slowly with long periods of idling and the very occasional pulse. There is no way at all that my machine would run that long without stopping, simply because it has far too much compression in comparison to the flywheel energy at low speed, to allow it to do so. I have played about with spring tension and when the firing rate falls below about once a second, the engine just stalls with a bump at around TDC as the compression overcomes the flywheel energy.

I feel sure the piston has been altered.