-   Hybrids (
-   -   HUB motors anyone? (

justme1969 03-04-2013 11:43 AM

HUB motors anyone?
Looked into Hub motors for a hybrid drive.
Ive realize I dont have enough information to design a good set up.
These look to be the future of ev and hybrid drives to me but...
Try to bear with me here sorry if it even becomes part unicorn but it seems feasible to me.
Hub motors provide good torque, regen, and all for fair price because electric scooters are popular in the east.
Well the bad side so far is that thier rated for 500 pounds max carry.
Again there may be other issues Im unaware of yet!
But on a Pontiac Fiero 2m4 base car the engine is in back already.
They call it Mid engine but more to rear from what I remembered.
I dont believe Swapping the 2.5 4cyl for a 500cc electric start aircooled motorcycle engine would shed enough weight to get 475 pounds per side front.
Especially after adding 2-3 batteries to the build and controllers etc.
I would like to retain 10 gal. fuel if possible too.
Set Hub motors to cruise control buttons perhaps?.
ICE to pedal with 3/4 WOT electric link to hub drive for activation during heavy accel with 4wd??
This build may belong in the corral till later in the future but ya gotta admit; it is a cool concept.

NeilBlanchard 03-04-2013 11:49 AM

Here's a recent thread:

razor02097 03-04-2013 12:02 PM

The ideal use of a hybrid (to me) is use electric to get the vehicle moving then use the ICE to maintain the speed at peak torque.

Other use of the electric would be combining electric power and the gasoline engine to maintain speed up a grade then using regen and DFCO (in highest gear) down the other side of the hill.

One question I would have is.... is 500lbs the capacity the hub motor can propel or is 500lbs all the weight the axle and/or bearings of the hub motor can carry?

justme1969 03-04-2013 12:26 PM

Wow they built thier hub motors for the accord wagon.
Little beyond my machine shop here. Ive not got a Lathe so back to premade units with a warrenty perhaps??
Pretty sure this is the one but Im not at home puter just now.
EnerTrac Corporation Electric Hub Motor |

just a few more resources b4 I loose it completly again this was Idea I had a year ago.

Conversion Motors
brushless hub motor,electric bike hub motor,electric scooter hub wheel-CityZenith motor Online Shop

cRiPpLe_rOoStEr 03-31-2013 07:06 PM

It's not impossible to find tutorials for making hub-motors at home. Regarding electric drive, anyway, they're the solution I'm most favorable to. The only issue would be how to make them also work into some regenerative braking mode...

Ryland 03-31-2013 08:05 PM

I see a lot of trouble with hub motors.
First off you are adding a lot of unsprung weight, that mass is also a precision part! if your brakes are to close they will rub while going around corners just from the flex in all of the parts in the wheel hub and axle, with brakes you get a slight rubbing between parts that are meant to rub, try this with a motor and you'll get metal on metal grinding right next to huge magnets, those magnets will also pick up metal grit off the road unless the motor is sealed, sealed motors weigh more and take up more space.

A solution that I see is slightly shorter drive shafts and inboard motors, even with a gear or chain reduction to allow the motor to be off set will not waste much energy compared to the energy wasted by having to have larger gaps in the motor to allow for the flex that is going to happen in a wheel hub motor.

GreenHornet 04-08-2013 06:51 PM

Ryland pretty much hit the nail on the head with this one. Hub motors are in theory great until you start factoring in the added unsprung weight and all the other issues. They have been working on this since Porsche came up with the first hybrid way back in the day. China and India has many of these all over the net meant for scooters which do the job. Now putting these in a 2500 pound or more vehicle is a different ball game. There is a company called Proteon that has been doing some major work into these motors so you might check them out. However I do not think its possible as a consumer to purchase any of there technology. They like everyone else wants the big government and corporate contracts :mad:

DIMS 04-08-2013 07:54 PM

Huge hub motors
This one might be in line for the biggest hub motor:
Payload Capacity 363 t (400 ton)
Gross Weight 598,640 kg (1,320,000 lb)
Engine(s) Detroit Diesel/MTU 20V4000
Arrangement: V-20
Power: 3,750 horsepower (2,800 kW)
Transmission(s) AC Electric • View topic - THE WORLD BIGGEST HUB MOTOR

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