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help choosing motor

Old 03-18-2009, 06:52 PM
  #1  
jt182
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Default help choosing motor



TURNIGY AerodriveXp
I am looking at this motor for a bridi aircruiser 25, est. wgt. 3 1/2 lbs any in put would be appreciated.
I beleave this would give me 75 watt's per lb

Model: TR35-42B
Input Voltage : 7.4V~14.8V (2~4S Li-po)
Kv : 1250 rpm/V within 10%
Current capacity : 45A/30s
Dimentions : 35mm X 42mm / 1.38in X 1.65in
Shaft diameter : 4mm / 0.16in
Weight : 132g / 4.66oz
Number of poles/magnets : 14
Recommended model weight : 600~2000g / 35~81oz
Power equivalent : .30 to .35 IC glow engine
Stator Dimentions: 28x20mm

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Old 03-21-2009, 10:16 AM
  #2  
Dr Kiwi
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Default RE: help choosing motor

If you reduce the optimistic rating by 25% or so... these are good motors. I think that if around 250W is enough for you, that motor will do very well - maybe even 30A and 300W - but the 45A burst rating is way too much! As for HC bragging that this motor is the equivalent of a .30-.35 IC motor (that's about 600-700W)... forget it.
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