[Electric Boats] ReKnots to Watts

 

Eric,
thank you for interesting speculations! I think 170lb and 50% prop
efficiency are optimistic figures? What about your example kWatts and
speed figures? Are you absolutely sure?

My mistake 3 years ago: I measured currents to el-motor using a "hook
ammeter". Don't know the correct instrument name in english? But the
sharp and high controller spikes spoiled my measured data completely.
Since then I only use current shunts and RC-filters to get reliable data.

redu

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