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upping in cells

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Old 05-09-2010 | 04:14 AM
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From: Bremen, Germany
Default upping in cells

what happens when I up the volts? currently using 4cell... but the motor I use can go up to 6cells, its a Turnigy 1000W output don't know KVA rating... I only have a 60A ESC so I am limited to 11x5.5 prop to not exceed 60A measured with wattmeter... what would it do to up the cells? will I draw less current and should I be able to use bigger prop? thats what I am hoping, but I have no idea... help please...
Old 05-09-2010 | 08:58 AM
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Default RE: upping in cells

It might be quite counterintuitive, but if you go up a cell or two and keep the same prop, you are going to draw more current. The basics are: the higher the cell count, the faster the speed of the motor. If you increase the speed of the motor and prop, the power goes up, but because of the laod on the prop, the speed will not necessarily go up propotionately, and this will cause you to draw more current. The key here is balance. When you set up a system (motor, battery, prop), you should match the system to how you want to fly. If I have a motor that has a kv of 1000, and I want to add cells, I would want to decrease the prop pitch and diameter so that I don't draw as much current, or more. In order to estimate this, I would recommend a program like Motocalc, or the free alternative, Drivecalc.
Good Luck,
Curtis

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