[JacobCurt]

I’m looking to convert a 5000lb vehicle to electric but I’m not sure if the AC-51 motor will be able to move it. I’m hoping to get it up to 80 mph but a little less is okay, the vehicle has a tire diameter of 15 inches if that’s helpful. If it can that would be nice, but if not alternative options would be appreciate.

 

[cricketo]

AC-51's have been used to convert skid steers, which are 7000lb+. I have a 12,000lb vehicle powered by AC-23 (about half the power of AC-51). It all depends on what you expect the vehicle to do.

 

[JacobCurt]

I’m looking for it to do about 80 mph

 

[cricketo]

You can probably do that if you don't have aerodynamics of a brick, but your acceleration will be terrible. Good luck.

 

[Zieg]

15" is the diameter of the tire, or the wheel? You need to do some calculations to work out your torque requirement at 80mph (rolling resistance, wind resistance) and then see what kind of reduction ratio you'd need to get the vehicle up to that speed with whatever voltage battery you are planning to use. Then, you can check the specs of that motor to see if it can even deliver the required torque (plus a large fudge factor) at that RPM. As you can see we'd need a lot more information before we could help you. As far as other motor options, some might be the Hyper 9, or various Tesla motors, Nissan Leaf motor, etc.

 

[JacobCurt]

15" is the diameter of the tire, or the wheel? You need to do some calculations to work out your torque requirement at 80mph (rolling resistance, wind resistance) and then see what kind of reduction ratio you'd need to get the vehicle up to that speed with whatever voltage battery you are planning to use. Then, you can check the specs of that motor to see if it can even deliver the required torque (plus a large fudge factor) at that RPM. As you can see we'd need a lot more information before we could help you. As far as other motor options, some might be the Hyper 9, or various Tesla motors, Nissan Leaf motor, etc.

So the rpm for a speed of 80mph that would be about 5000rpm and the AC-51 power graph is showing about a torque of 125 newton meters at that speed and the motor runs at 144v I’m not quite sure how to do those calculations, if there’s a calculator I could use or something would you be able to share that?

 

[remy_martian]

You're not going to get 80mph without serious engineering on a "5000 lb vehicle" you have not identified. The vehicle type might make a difference, but your speed expectations are unrealistic, imo.

Just because the RPMs calculate does not mean you can sustain those levels of power. The 88hp and 108ftlb ratings are peak, not sustained, which should be down around 28hp-30hp or so. It's gunna suck on the mildest incline.

So, based on the info you've held back, including tire size and driveline info, no.

 

[onegreenev]

HPEVS Automotive Motors are designed for vehicles weighing around 2500 lbs. The lighter the better. If you could double up the motors you could do better or fit a Tesla Motor or Leaf motor as they are higher voltage systems and more capable than these little beasties. When I think of HPEVS motors I think of old VW conversions.