Model Boat Mayhem
Technical, Techniques, Hints, and Tips => BRUSHLESS Motors and Speed Controllers => Topic started by: mermod on March 28, 2012, 11:49:49 am
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Just wondered if anyone knew roughly what a johnson or mabuchi 785 or 700 brushed motor would equate to in brushless?
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inrunner or outrunner?
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It would be for a 700mm long tug so probably outrunner
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Size of prop?
operating voltage?
Required rpm??
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Don't have the exact specs for those motors, but a
RE 800 is about 800 Kv
RE 850 is 485 Kv
Speed 900 torque is about 550 Kv
the slowest speed 700 is about 960 kv
Speed 720 BB torque is about 350 Kv
Maximum watts are 157W for the RE850 all the others are sub 100w .
Nick
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Perfect, just what I needed, thanks nick :-))