ESC question
08-13-2007 | 01:46 PM
#1
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From: London, UNITED KINGDOM
ESC question
Hi all!
I am scratch building a scale RNLI offshore lifeboat, and I plan to power it with one 9.6V battery and two 13 turn 700 motors in parallel.
I am using a ripmax no-limit ESC, which is made for cars, and has no motor limit. It is rated at 440A continuous, and 1400A bursts.
However, it is a small ESC with a small heat sink. When I used it with one motor, drawing about 15A continuous, after about 10 mins of non-stop running, with lots of running at low throttle, acceleration, and high speed, it was warm. Will it have any problem with running two 700s in parallel? I think I will water cool it, by passing brass tubing (with water in it) between the fins in the heat sink.
Will it also matter that one of the motors is old, and has been used alot, while the other is new and has not been used much? I could break in the new motor first, by just running the boat on the one new motor.
Thanks for your time,
cowana
I am scratch building a scale RNLI offshore lifeboat, and I plan to power it with one 9.6V battery and two 13 turn 700 motors in parallel.
I am using a ripmax no-limit ESC, which is made for cars, and has no motor limit. It is rated at 440A continuous, and 1400A bursts.
However, it is a small ESC with a small heat sink. When I used it with one motor, drawing about 15A continuous, after about 10 mins of non-stop running, with lots of running at low throttle, acceleration, and high speed, it was warm. Will it have any problem with running two 700s in parallel? I think I will water cool it, by passing brass tubing (with water in it) between the fins in the heat sink.
Will it also matter that one of the motors is old, and has been used alot, while the other is new and has not been used much? I could break in the new motor first, by just running the boat on the one new motor.
Thanks for your time,
cowana
08-13-2007 | 02:03 PM
#2
RE: ESC question
Don't know much about the ESC.
As far as the 700's go, I'd just break in the new 700 by feeding it 3v or so for half an hour. They wear very slowly with recommended power. Even on 12 cells they last a very long time. You shouldn't notice any difference as long as the old motor has never been abused by heat.
Ryan
As far as the 700's go, I'd just break in the new 700 by feeding it 3v or so for half an hour. They wear very slowly with recommended power. Even on 12 cells they last a very long time. You shouldn't notice any difference as long as the old motor has never been abused by heat.
Ryan
