I can't tell you where it will be rpm wise...There are many many factors. Fuel is only one of them. Air temps, density, elevation, exhaust system, and so on. These things all add up to the rpm performance numbers. This combined with the engine itself...you know some are just stronger than others.

I will say I doubt the 17-10 std prop will hit those RPM numbers but it might...the 17-10N blade should come closer tot he numbers....But if you are high elevation above sea level or its really hot temps it will affect it.

The 16-10 is about perfect on the 140 Sport with 30% heli fuel...the 16-11 is also good but a little more load on the engine.

Troy Newman
Team YS