Amp draw buggy

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Old 06-21-2012, 06:00 PM
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Default Amp draw buggy

How much amps (continuous & peak) will a brushless 1/8 system draw?
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Old 06-22-2012, 07:11 AM
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any reply ?
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Old 06-22-2012, 07:19 AM
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Originally Posted by mariano2cv View Post
any reply ?
That's a really general question. It depends on the specific motor.. If you list the motor(s) in question, you may get a lot more responses. Are you trying to purchase an ESC with enough capacity to handle a given motor, or is this a battery concern?
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Old 06-22-2012, 07:21 AM
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The short answer is , it depends. There are so many variables, to get an accurate answer pick up a data logger or watt meter and install it in your car.
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Old 06-22-2012, 07:29 AM
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Originally Posted by jf+ View Post
That's a really general question. It depends on the specific motor.. If you list the motor(s) in question, you may get a lot more responses. Are you trying to purchase an ESC with enough capacity to handle a given motor, or is this a battery concern?
Exact. I want to know the consumer to choose my battery, I want to use a tekin 1900kv motor in an mbx6 eco.
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Old 06-22-2012, 07:47 AM
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from what I hear they peak at about 100 amps, so basically any battery these days will do the job for the first race, but higher C rated packs will last longer as you aren't pushing them to the limites. I'd go with a 5000mah 40c pack or higher.
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Old 06-22-2012, 08:01 AM
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A few years ago we did a lot of data logging.

4s 1700-1900kv 1/8th buggies 120-150 amp peak
5s 1400-1550kv buggy 90-110 amp peak (average amp draw 10 amps)

4s Truggy (worst we saw) 175 amps, & the guy wondered why he kept killing ESC's.

Frankly I would rather take a 5s or 6s setup with a low KV motor over a hot 4s setup any day.

The lower amperage (high voltage) setups also let you get away with more inexpensive batteries.

I have also seen a 4S 5000mAh 20C survive a season on a 1700kv, but boy that was their limit.
Nothing like a soft warm pack at the end of a run.
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Old 06-22-2012, 09:15 AM
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Originally Posted by GLwagon View Post
A few years ago we did a lot of data logging.

4s 1700-1900kv 1/8th buggies 120-150 amp peak
5s 1400-1550kv buggy 90-110 amp peak (average amp draw 10 amps)

4s Truggy (worst we saw) 175 amps, & the guy wondered why he kept killing ESC's.

Frankly I would rather take a 5s or 6s setup with a low KV motor over a hot 4s setup any day.

The lower amperage (high voltage) setups also let you get away with more inexpensive batteries.

I have also seen a 4S 5000mAh 20C survive a season on a 1700kv, but boy that was their limit.
Nothing like a soft warm pack at the end of a run.

This is exactly what I needed to know, thank you!
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