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How many amps does a typical motor draw?


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#1 JoshFink

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Posted 28 January 2012 - 09:24 AM

Looking to build a test block so I can put the car on it and make sure it's running OK, break-in the motor, etc. I can get a 12 volt power supply to power it but I wanted to make sure I had the right amount of amps.

Thanks,

Josh
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#2 Cheater

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Posted 28 January 2012 - 09:34 AM

Josh,

You're going to have to define "typical" for you.

Typical C-can or D-can motor as used in 1/24 commercial raceways?

Typical mini moor used in 1/32 Europlastic cars?

Typical strap or can motor used in wing car racing?

Without any additional info, 5 amps ought to work for most everything except the high end C-can and strap motors. For 1/32 cars, 2 or 3 amps should suffice.
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#3 TSR

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Posted 28 January 2012 - 11:44 AM

My swimming pool motor draws 20 amps at 220 volts.
My TSR motor in my Retro pile draws 0.8 amp at 12 volts, and 0.38 amp at 3 volts.
My Pro Slot 4002 X12 RetroPro motors draw between 2.8 to 4.3 amps (no idea why there is such a discrepancy as they go the same speed...) at 3 volts.
A TSRF T3215 home-racing motor draws 1/2 amp at 6 volts.
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#4 gotboostedvr6

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Posted 28 January 2012 - 12:21 PM

My F5b Hotliner motor draws 300 amps at 22 volts and climbs out of sight in 4 seconds. :)
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#5 James Wendel

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Posted 28 January 2012 - 04:42 PM

Wow... a motorized swimming pool.

Doesn't it, like slosh over, when you go around corners? :huh:
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#6 GrandiRacing

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Posted 28 January 2012 - 04:52 PM

My .560 16D arms draw 1.3-1.8 Amps at 5 volts, my .560 S16D arms draw 1.5-2 amps at 5 volts
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#7 Guy Spaulding

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Posted 28 January 2012 - 05:34 PM

Typically, if any slot car motor draws more than 5 Amps at 5 Volts under no-load conditions, there's something wrong. Even my G7 motors from the '80s drew no more than 4.5 Amps.

But you want to go overkill with the power supply you choose. I recommend a capacity of 7-10 Amps.

A cheap way to go is an old PC power supply. It may not be variable, but you often have outputs of 3V, 5V, & 12V, with adequate amperage from each output.

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#8 Horsepower

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Posted 28 January 2012 - 05:47 PM

Wow... a motorized swimming pool.

Doesn't it, like slosh over, when you go around corners? :huh:


:laugh2: :laugh2: :laugh2:

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#9 Dan Ruddock

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Posted 28 January 2012 - 06:31 PM

I put a amp clamp on the white wire as a G7 was making laps and the average draw was twenty amps.

Dan
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#10 JoshFink

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Posted 28 January 2012 - 07:45 PM

Great... Thanks for all the replies...

Just to answer the above question, I'm interested in typical C-can or D-can motor as used in 1/24 commercial raceways?
Josh Fink

#11 Cheater

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Posted 28 January 2012 - 07:52 PM

At least 5 amps IMO.
Gregory Wells

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#12 Hworth08

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Posted 28 January 2012 - 09:32 PM

Philippe,

I'd be leary of swimming while the swimming pool motor is running. 220 volts won't hurt a thing, 20 amps will roast your bones.

It would be best to move the motor to a location OUT of the pool.
Don Hollingsworth

#13 Guy Spaulding

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Posted 28 January 2012 - 10:03 PM

But if your pool was filled with distilled water, it wouldnt hurt a thing.

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#14 Phil Irvin

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Posted 28 January 2012 - 11:59 PM

Add ceramic media and you will be polished when you get out...

OLPHRT
PHIL I.

#15 Guy Spaulding

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Posted 29 January 2012 - 07:58 AM

Drat! I meant to pick up some of that for my new tumbler while I was out yesterday. Does Hobby Lobby carry it?

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#16 DOCinCocoa

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Posted 29 January 2012 - 10:20 AM

As you can imagine, the amp draw is all over the place. And what is a typical motor?

At 6 volts, no load on the motor, a Falcon 7, Hawk 7, and TSR draw about 0.3 to 0.6 amps. My Pro Slot PDs draw from 2.5 to 4.5 amps. My Pro Slot S16Ds which I race in Florida's My Series races draw about 4.5 to 6.0 amps.
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#17 Hworth08

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Posted 29 January 2012 - 10:38 AM

I never got what I considered good results from amp draw. In therory the more amps, the more current, the more power. But.

At some point how efficient a motor is probably has an effect. A Super 16C pulls about four amps, a Falcon 7 about one, but a Super 16 is only a little faster on the track.
Don Hollingsworth

#18 Phil Irvin

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Posted 30 January 2012 - 06:27 PM

Drat! I meant to pick up some of that for my new tumbler while I was out yesterday. Does Hobby Lobby carry it?

GUY,
I got mine from www.riogrande.com jewlery supply from Albequerque New Mexico, Ordered it about 5:30 PM Florida time.. Went out the next day. Got it 2 days later.. They have it from Kinda Course to Super Fine. I asked for what would work on medium soft brass the best and got it. I don't remember which one it was and the box is long gone..Also got .007 thick Dremil type discs. Just a little too thin.. :dash2:
OLPHRT
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