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Old Oct 10, 2012, 03:17 PM
flylowfast is offline
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Joined Jun 2009
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I did some calculation using similar data with this online calculator:

http://brantuas.com/ezcalc/dma1.asp

Configuration:
-custom motor with Kv=2000, res=1.6Ohm, current: 0.34A
-LiPo: 180mA, 2s, res=0.15Ohm, voltage=3.7V
-controller: Castle Phoenix 10A: res=0.013 Ohm
-propeller: custom, diam=5", pitch=3", blades=2, prop. const.=1.18, gear=1.0

Results:
-thrust=76.41g, current=1.637A, voltage=6.89V, power=11.28, eff.=45.2%

So the thrust is a little less than that of the previous calculator, but very close to it and very far from real life measurements.

Any ideas on why the big difference between the calculators and real life ?
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