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Raptor E325 › What does the kv mean on brushless motors?
09-13-2007 04:54 AM  10 years agoPost 1
rudderman

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Hopkins s.c.

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What does the kv mean on brushless motors?Is it better to get the highest kv when buying a brushless motor?Please explain whats the best way to pick a brushless motor for your heli.Im new to this and don't quite understand right now thanks

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09-13-2007 05:14 AM  10 years agoPost 2
daijoubu

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Burnaby, BC - Canada

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kV is the RPM/Volt rating for the motor. Motor RPM is estimated by:
Battery voltage * kV * efficiency/100. Higher kV ratings usually coincide with lower torque ratings. Choosing a kV depends on how many cells you will run, how much power you want, motor efficiency, and the maximum RPM rating of the motor.

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09-13-2007 05:21 AM  10 years agoPost 3
rudderman

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Hopkins s.c.

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Thanks i was thinking of using my two 1320 thunder power 3s battery.I am thinking of running them parallel.What kv would you recommend for this ?

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09-13-2007 05:14 PM  10 years agoPost 4
daijoubu

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Burnaby, BC - Canada

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So you'll essentially be flying a 3s2p pack. The voltage will be the same as the 3s1p packs that everyone else is flying. You'll probably want to stick to what most people are flying as it works. That's a motor with a kV around 3500. The stock Ace Ripper motor(3500kV), Align 430xl (3700kV) or Align 430l (3550kV) seem pretty common.

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09-13-2007 08:13 PM  10 years agoPost 5
Hazy

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Singapore

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What is the max watt the stock motor can take?It is 400 watt?

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Raptor E325 › What does the kv mean on brushless motors?
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