The discussion revolves around calculating the horsepower (Hp) or watts (W) for the O.S 61FX RC airplane motor based on its specifications, particularly focusing on the propeller size and RPM. The context includes theoretical considerations of maximum speed without accounting for weight or load conditions.
Participants express varying views on the accuracy of calculations versus looking up specifications, and there is no consensus on the implications of load conditions for speed estimates.
The discussion does not resolve the assumptions regarding load conditions and the implications for speed calculations, leaving these aspects open for further exploration.
It would be better to say that if the plane were in a steep or vertical dive (and could achieve 59 mph speed with no power in a dive), that would be the speed where the prop would not experience a forward or backward load (only a torque load).boyongo said:Just to be sure @ rcgldr we are talking about forward speed (velocity that the airplane is going to be traveling without any load and discarding the weight of the plane)?