Thread: Discussion RC excavator CAT 320 build blog
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Old Dec 24, 2012, 07:40 PM
rcphreak is offline
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USA, FL, Fort Myers
Joined Jun 2008
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kv ratings will varry you will be looking for a low kv rating the lower the better . but through gearing and batterys you could achive your needs . remember kv = rpm x volts . but 40 to 50 rpm is unheard of . you may look into some type of hydrolic motor for such a low rpm and to have the torq required to move this heavy unit .

so for reference if you use a 400 kv motor and say a single cell 5000mah lipo 400 x 3.7 will give you 1480 unloaded rpm with gearing could be where you need to be and would have gobbs of torq another method would be to use a 7.4v while giving more rpm you could limit your epa to achive the desired speed and increase torq .
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Last edited by rcphreak; Dec 24, 2012 at 09:13 PM.
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