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

Very interesting Gil, what all has been done to yours for slower running?

Removed 1 spring from the governor weights.
Retarded timing a little.
Used 100 LL aircraft fuel with Mystery Oil.


The aircraft fuel with higher octane burns slower than Coleman fuel so has a little less punch.
You can also stretch the governor springs a little at a time until you get the desired effect. This way you keep both springs.