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theunchosen 11-26-2008 12:56 PM

This is somewhat off-topic for the board but has the most knowledgeable base audience.

I'm considering something radical and I would need 4 lightweight motors that could produce a total of 100 HP and enough to move a 2,000 lb object up to 70-80 mph on a 14 inch tire(less than 3,000 rpm approx 2,200)

zemmo 11-26-2008 01:06 PM

You don't need 100 Electric HP to get a 2,000 lb vehicle to 70 or 80 MPH. My car only has one 19 HP motor and its 3400 lbs and I can get up to 70 or 80 MPH. Unless you weren't trying to build something efficient and wanted a the extra HP. Do you happen to have more details of this build that you could share instead of people shooting into the dark? But from the details you have given us, it sounds like an ETek motor is what you are looking for.

zemmo 11-26-2008 01:10 PM

Here is some quick speks of ETek Electric Motors:
Electric Motorsport EV Parts :: Etek Motor

Oval_Overload 11-26-2008 03:57 PM

Remember the Electrogeeks rule of thumb... Gas horsepower= electric horsepower x 4.

Electric motors are rated for the horsepower they can produce continuously under load.
ICE's are rated for the maximum horsepower they can produce at the highest point on the power curve, under ideal conditions, while sitting on the bench.

theunchosen 11-26-2008 06:59 PM

Yeah sure I would be glad to. It's from the thread Newbie Pitch over on the ecomod central.
assume an onboard generator rated for say. . .100 KW.
4 AC/DC(whichever would be preferable( I don't have alot of practical background(Ac obviously has the generator direct advantage but the generator would also need to juice batteries when sitting) motors capable of getting a 2,000 lb car to 60 mph in under 8 seconds, and top speed around 80-90. Also assume a few extra batteries. . .2-3 to recover idling juice, braking, and coasting down enormous hills(Sam's Gap in East TN).

I'm asking mostly for user-experience because. . .well I know ICE specs and what they mean very well but. . .ICE and electric torque and horsepower are different animals. I dunno how much HP I need or torque I need out of the electrics.

It would be for a Honda Del Sol slightly heavier than normal(say 100-200 lbs)(That said I weigh 139 lbs clothed and soaking wet) and would be the only propulsion for the vehicle.

The idea is keep the ICE run a generator and run Stirling Engines off the exhaust gas heat(directly beside the engine) and as close to the engine as I can get. Use several Stirling Engines to reclaim around 50 KW so the ICE only has to pump out 50-75 KW instead of 100 KW. Also all drive train components would be ripped out to save weight and replaced with E-motors attached directly to the wheel chassis(with standard lug nuts).

Oval_Overload 11-26-2008 09:17 PM

Try a Mr. Fusion: the solution to all your energy needs!

theunchosen 11-26-2008 09:34 PM


Originally Posted by Oval_Overload (Post 75093)
Try a Mr. Fusion: the solution to all your energy needs!

Well if the garbage(wasted heat energy) can get me up to speed. . .

jjackstone 11-26-2008 09:38 PM

Maybe you could use something like this.
Hi-Pa Drive from PML flightlink
If they ever quit building the motors by hand and actually get them into full production, the motors are suppose to come down to the few thousand dollar range.

theunchosen 11-26-2008 10:36 PM

That looks great. Judging from the fact there was not an immediate published price quote for equipment its obviously expensive. Thats pretty much the kind of motor I'd be looking for but stepped down substantially since I need 1/3 as much power as the truck.

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