ORIGINAL: rmh
IF rpms increase with same power input - the load on the motor has decreased
same on a glo setup-or gas
A glow setup which unloads in a dive is NOT making more power -it is simply under less load...................
You cant get more power with less fuel - can you?
RC Speed engines are tuned and propped so that the dive is needed to get the engine into an rpm range where it can hit it's highest stage of resonance. At this point the engine gets the explosive jump in RPM and continues at this power level the rest of the flight.
These engines do have the fuel / air handling capability to get to the highest power threshold with the help of the dive. At this point the fuel comsumption is off the charts.