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16cells to 12v 7amp
moggy
post Dec 1 2007, 10:45 AM
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i've got a RC boat that runs 3 motors through 1 esc (25amp)

now it was running 16cells but ran out of puff after about 5mins

so i tried a 12v 7amp gel battery

much better

but now the esc keeps over heating?

any ideas

thanks
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rktman56
post Dec 1 2007, 02:03 PM
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QUOTE(moggy @ Dec 1 2007, 11:45 AM) *
i've got a RC boat that runs 3 motors through 1 esc (25amp)

now it was running 16cells but ran out of puff after about 5mins

so i tried a 12v 7amp gel battery

much better

but now the esc keeps over heating?

any ideas

thanks



Do you have your ESC where it can get no air flow over it? You may need to ensure air can flow into your hull. If this is OK, let us know.

Roger


--------------------
Roger

Model Marina Web Master and Discussion Board Administrator

"Over the years I have spent nearly all of my money on my Harley-Davidson, my model boats and women. The rest of it I just wasted!"


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moggy
post Dec 7 2007, 08:40 AM
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QUOTE(rktman56 @ Dec 1 2007, 08:03 PM) *
Do you have your ESC where it can get no air flow over it? You may need to ensure air can flow into your hull. If this is OK, let us know.

Roger


no its quite a big boat (graupner giant racer) and its got lots of room and air going in and out

i've put a 50amp water cooled on and its going really well but i don't think it should need an esc so big
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