How much flight time for the following set up
11-29-2006, 04:11 PM
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How much flight time for the following set up
Hello, I'm a new convert from Glow power planes to electric. My latest conversion is an 80inch span twin engine E2-C Hawkeye. My question is this. How much flight time can I expect from the following set up. 2 x 4000 milliamp 20c Lipo packs plus twin motors both pulling a consistent 30amps at 300 watts. Thank you all for your help
11-29-2006, 04:52 PM
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RE: How much flight time for the following set up
Just based on my silly monkey math, not the actual weight, etc. of the whole thing, I am coming up with 8 minutes +/-.
30 amps = 30,000mah
4000mah battery / 30,000mah motor draw = 0.133333 hours
0.133333 hours x 60 minutes = 8.0 minutes
Since you have two motors running at the same time, you only need to figure out one side.
I think that is right.
30 amps = 30,000mah
4000mah battery / 30,000mah motor draw = 0.133333 hours
0.133333 hours x 60 minutes = 8.0 minutes
Since you have two motors running at the same time, you only need to figure out one side.
I think that is right.
11-29-2006, 05:00 PM
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RE: How much flight time for the following set up
Now, to be honest, I have done this on my setups......and it never winds up working out. That math will tell me 5 minutes, and I wind up with 9 
You will most likely wind up with a little more than that.
You will most likely wind up with a little more than that.
11-29-2006, 05:07 PM
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RE: How much flight time for the following set up
Thank you both.. I guess I will take her up this weekend for a 3 or 4 min run and see what I have left in my packs.. But thank you again for the info... I just wanted a ruff idea of what I was looking at... The plane is about 8.5 lbs flight ready. It has robart retracts so that will help with the drag issue. I do relies that my motors peak out at 37 amps but feel safe that it will fly nicely at 30 amps.. just above 1/2 throttle.
