Electric Motor?

Question

Where can I find an electric motor that will turn somewhere between 5000-10000 RMP with somewhere between 150-200 hp with 200-300 lbs of torque?

Answer 1

Well, I guess Wal-mart's out of the question.

Military surplus, but to get it running your neighbors might get a bit ticked when you brown them out from the power draw!

The thing to be careful when getting any military surplus now days is to be sure it either doesn't glow or come from overseas (DU contaminated).

Answer 2

You are going to have a problem with that RPM range. The mass of the rotor has to increase as the HP goes up. Usually the larger the motor the slower the RPM. 3750 is usually the max rpm for most electric motors below 2 HP.

You can look at Baldor Electrics web site and see if anything exists even close to to what you are looking for. When you figure the power requirements for a electric motor a rule of thumb is 750 watts per horsepower. So at 200HP you are looking at 150,000 watts of power requirred. To get that kind of power you will need high voltage or high current.

Ohm's law says Power = Current X Voltage. As most AC motors have a max rating of 480 VAC. You would have to have one heck of a power source.

I don't know what you are going to do with this motor but it will be huge.

Answer 3

The one on my electric utility vehicle would probably do the trick, but you would have to buy the whole vehicle, the motor is not for sale by itself!

Answer 4

Have you tried:

Grainger.com

McMaster-Carr.com

Digikey.com

Answer 5

Let us know, ok?

.

Answer 6

Electric store.

Answer 7

No idea where you could go to purchase one but the electric motors they run in Toyota hybrids would seem to meet the requirements you are looking for.

Prius

Electric Motor

    Motor type Permanent magnet AC synchronous motor

    Power output 67 hp @ 1200-1540 rpm (50 kW @ 1200-1540 rpm)

    Torque 295 lb.-ft. @ 0-1200 rpm (400 Nm @ 0-1200 rpm)

    Voltage 500V maximum 500V maximum

Highlander

Electric Motor

Function

  Drive front wheels,

  regeneration during braking NA NA NA Standard Standard

Motor type

  Permanent magnet motor NA NA NA Standard Standard

Power output

  165 hp (123 kW) @ 4500 rpm NA NA NA Standard Standard

Maximum torque

  247 lb.-ft. @ 0-1500 rpm NA NA NA Standard Standard

Maximum voltage

  AC 650V NA NA NA Standard Standard

Answer 8

*laughter*  In your dreams.

This seems like a question Google can answer - since you seem to have your requirements nailed down.

Answer 9

Electric motors are nothing like gasoline engines, so you want to spec them quite differently.

Do you need that horsepower continuously, or intermittently?  

Automobiles use their max horsepower only intermittently.  Obviously, if you floor the accelerator on a car on the street, you have to let off within a few seconds, or you'll hit something!

Electric motors can be massively overloaded temporarily.  This dragster http://www.evparts.com/about/index.php?s... does 11 second quarter-miles with two of these 9" motors

http://www.adcmotors.com/prod01.htm which are rated 26 horsepower for 60 minutes.

Most DC motors top out between 3000 and 5000 RPM.  Most AC motors are designed for 3450-3600 RPM, because that matches the 60-cycle AC power frequency in the USA.

But electric motors have ENORMOUS amounts of starting torque.  At 0 RPM, their torque is maxed out.  That's why locomotives use electric motor drive.  So in automotive applications you don't need a clutch and often you don't even need a transmission.  

Anyway, where to get motors?   For DC motors http://www.adcmotors.com/prod01.htm

http://www.ev-america.com/components.htm...

http://www.go-ev.com/

For AC motors, a standard 3-phase "squirrel cage" induction motor will do. These are common and cheap, they're the primary motor used for running compressors, pumps etc.  For EV use, a very complicated controller is needed to convert DC battery power into AC for the motor. But this also gives electronic reverse, regenerative brakes, and a wide enough torque curve that you don't need a transmission at all.