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Old 05-02-2002, 12:41 PM   #1
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Default What amperage draw do good mods pull?

I want to make a drag car and I was going to use something like 12-18 cells. I found a boat ESC that does 2-24v and 30A.

How many amps does a 10-18 turn mod pull @ 18-24v ?

Thanks.
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Old 05-02-2002, 01:13 PM   #2
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A mod motor on 7.2 volts can pull upwards of 75 amps from a dead stop, higher voltage would mean higher amp draw. MOst drag cars I've seen use a hefty switch for the power rather than an ESC, you might want to look into that.

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Old 05-02-2002, 02:09 PM   #3
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You will definately want a dump switch instead of an ESC.

These are full on, or nothing at all. Most ESC's cannot handle more than 10 or so cells.
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Old 05-02-2002, 02:10 PM   #4
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Are there switches that can be controlled by the receiver? Anyone have a link to one of these "switches"?
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Old 05-02-2002, 03:14 PM   #5
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I sent you a pm. You can use 2 v7.1's with 24 cells and like a 6 or 7 double. I have seen it done.
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Old 05-02-2002, 07:12 PM   #6
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You control the switch with a servo like a mechanical speedcontrol.
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Old 05-03-2002, 12:18 AM   #7
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I'm not into drag racing, but I think it's easier to make FETs cope with the current than switches. And yes, standard 12-turn mods with 7.2V already take >100 A on a standing start.
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