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Positive Charge
10-13-2005, 06:48 PM
Some simple question for those that believe electricity exists.
I am building a twin using 2 480 brushed motors. I have to hand a 50amp controller and some 2 and 3 cell Li-Pos of 2500MAh 10c.Overkill?
Weight is not a problem in the model, it needs nose ballast.
At last the questions:-
1. What sort of current can I prop these motors for.
2. Do I run the motors in series or parallel and why.

Thanks
Alan

Glacier Girl
10-13-2005, 08:02 PM
A little more info would help. Motor info especially, Mfg, etc.
Plan on running direct or gearbox?

rcers
10-13-2005, 08:11 PM
The Long Can 480s can take 15 amps, the Sagami (BB and external brushes) can take like 20 amps (maybe more).

Since you have a 50 amp controller i would run them in parallel as you can take the 40 amps or so with the ESC. If you run series, both motors only see half the voltage, so you would have to use 6s packs.

You will need to parallel the 3s packs for a 30-40 amp draw. Both of these motors will perform much better on 3s than 2s packs when wired in series.

Mike

fdix
10-13-2005, 08:26 PM
rcers you are confusing series with parallel wiring. The motors when wired in series only see half the voltage in parallel they see full voltage and total current draw is the sum of current draw of each motor

rcers
10-13-2005, 08:36 PM
fdix - you are correct! I will go back and edit for clarity.

I didn't re-read and fdix is exactly right........thanks for keeping me honest!

Mike