Jason,
Thanks for the detailed reply, but I'm am still confused. Let me ask the question a different way. You said to get a cruise speed of 4.7 kts with optimal conditions, your prop spins at 650rpm. With a gear reduction of 2.55, that means your motor is turning 1657rpm. Since electric motors have full torque at all rpms, what is the problem with spinning the motor at 650rpm and eliminating the gear reduction? Is it just a measure of efficiency? How would you calculate the load on a motor at 650rpm versus 1657rpm.
Thanks,
John
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Posted by: johnrhines@gmail.com
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