Super tigre .10 brushless for 46 oz olimpic II?
#1
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Super tigre .10 brushless for 46 oz olimpic II?
Looking for a conversion looking for only brisk climbs, not vertical flight. 3 cell 2200ma bat and 10x6? prop. 30 A esc with a break.
Enough power?
Enough power?
#2
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For the sort of brisk but not rocket like climb you want the motor to draw 80 watts per lb. If it really is 46 oz that means you want to pull 240 watts from the pack on a wattmeter. On a 3S pack at 12'ish volts nominal that means 20 amps of current.
The motor specs say it's good for 320 watts so you won't be running close to the edge. And that's a good thing for motor life.
Given the suggested range of prop sizes the 10x6 sounds like a good starting point on the 3S pack. If it proves to be too strong simply throttle back a hair or go with a 10x5. If you need more go with an 11x5 or 11x6. I doubt that you'll need to though.
The motor specs say it's good for 320 watts so you won't be running close to the edge. And that's a good thing for motor life.
Given the suggested range of prop sizes the 10x6 sounds like a good starting point on the 3S pack. If it proves to be too strong simply throttle back a hair or go with a 10x5. If you need more go with an 11x5 or 11x6. I doubt that you'll need to though.
#3
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I agree with BMatthews. good analysis except that a 3S lipo is 11.1V nominal. to get 240 watts you will need to pull 21 amps. Not a big difference but use the nominal voltage to estimate amps, not the peak voltage of the pack on a full charge. You might hold 12V for a few seconds but then you would drop into the 11V range.
Just a different estimating approach.
Just a different estimating approach.
Last edited by aeajr; 04-19-2014 at 06:35 PM.
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One last thing... Seriously look at using much smaller capacity batteries - at most 1800mAH, even 1300mAH would be awesome. The weight savings will give you a glider that you will probably enjoy more.
Scott
Scott