Lead ballon
- in the case of an engine fitted with a fixed pitch prop, until the engine 'runs rough' or ceases producing power, and then enrich to remove the roughness or restore power.
Actually with a conforming engine and fixed pitch prop, like the O-320 I mentioned above, you can simply use about a 100RPM drop before it even runs rough.
Scavenger, if you want my details are in a PM shortly.
