aren't belt drives inherently inefficient if one compares that method of connection to a directly coupled shaft?
AND...
if electric motors produce the same torque at any rpm then why would one wish to gear an electric motor either up or down? wouldn't one simply want a slower revving more efficient propeller and then run a motor rated to run at 2400 rpm or more at 1000 rpm instead? i understand the cooling might be an issue with some motors due to the fans being an integral part of the motor but surely a secondary dedicated fan system could make up the difference for VERY little wattage
again, am i missing something.... BLDCs do run at constant torque do they not?
AND...
if electric motors produce the same torque at any rpm then why would one wish to gear an electric motor either up or down? wouldn't one simply want a slower revving more efficient propeller and then run a motor rated to run at 2400 rpm or more at 1000 rpm instead? i understand the cooling might be an issue with some motors due to the fans being an integral part of the motor but surely a secondary dedicated fan system could make up the difference for VERY little wattage
again, am i missing something.... BLDCs do run at constant torque do they not?
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