DIY Electric Car Forums banner

1 - 6 of 6 Posts

·
Registered
Joined
·
10 Posts
Discussion Starter #1
how do i make a electric motor 4 foot long and 6 inches in diameter with a axel on each side or is there any thing like this that i can buy just thought it could be used to run my geo metro in the rear wheels does anyone have any tought is this even possible thankyou for everyones help as you can tell i dont know much about electic cars or motors but think the only stupid ? is the one not asked thankyou everyone
 

·
Registered
Joined
·
7,832 Posts
how do i make a electric motor 4 foot long and 6 inches in diameter with a axel on each side or is there any thing like this that i can buy just thought it could be used to run my geo metro in the rear wheels does anyone have any tought is this even possible thankyou for everyones help as you can tell i dont know much about electic cars or motors but think the only stupid ? is the one not asked thankyou everyone
Hi donnie,

Some ideas which seem good at first glance turn out, well let's say, not so good when actually trying to implement them. Such as an axle motor 6" dia x 4' long. While theoretically possible, it is impractical to make such a motor for a number of reasons which we don't need to get into here. Suffice it to say that such a motor does not exist and to design and make one would cost you more than the price of a new Chevy Volt.

Remember that you need a differential on the rear axle. Take a look for some info on the Ford RangerEV they made back in the late 90s. It used a motor on the rear axle about 12" dia and maybe 18" long. The motor had a gear reducer and differential at one end, shaft to one wheel coming off there and then the shaft going to the other wheel actually went thru the middle of the motor.

You can also use 2 motors (and gear reducers) in place of the rear axle eliminating the mechanical differential and have each motor drive a single wheel.

But if you want to look for long skinny motors, search for submersible pump motors. These are made to slip down inside well casings. But these are not going to be suitable for an EV :(

major
 

·
Registered
Joined
·
10 Posts
Discussion Starter #3
thanks agian for replying major you said that i could use two motors one one each rear wheel and get rid of the axel can you tell me what kind of motor i would need for this application what i want to do is use the altenator of the 3 cylinder gas engine to operate the motors and not have to use so many batterys unseing the engine at ilde in netral or maybe even using the motors as an asist for the gas engine do you know what kind and what size that would reqire i am very mechanicaly inclined but not much on enginering and specificates also not very good at spelling ...lol thanks for you input major
 

·
Registered
Joined
·
7,832 Posts
thanks agian for replying major you said that i could use two motors one one each rear wheel and get rid of the axel can you tell me what kind of motor i would need for this application what i want to do is use the altenator of the 3 cylinder gas engine to operate the motors and not have to use so many batterys unseing the engine at ilde in netral or maybe even using the motors as an asist for the gas engine do you know what kind and what size that would reqire i am very mechanicaly inclined but not much on enginering and specificates also not very good at spelling ...lol thanks for you input major
Here is an example: http://www.diyelectriccar.com/forums/showpost.php?p=201744&postcount=118 I do not think markcycle has these available for sale yet.

Other than that it is part of the DIY experience to find a motor suitable for your project. Look thru the garage here and the evalbum and see what others have used.
 

·
Registered
Joined
·
251 Posts
One option is using something like the White Zombie.
John Wayland's White Zombie

White Zombie: Fastest street legal Electric Car
0 to 60 in ~3.5 sec's.
1/4 mi in 11.466 sec's. @ 114.08 mph
Powered by dual 8 in.(”Siamese 8″) Warfield Dual armature
series-wound motors for 240+ hp w/ 772 ft. lbs. torque.

More about it here:
http://fuel-efficient-vehicles.org/energy-news/?p=353

However finding any dual shaft AC or DC motor is usually pretty small, around 1 horsepower. I do remember seeing a larger one years ago, but searching on google may help find something larger about perhaps 50hp or bigger. Those old industrial 3 phase motors that had dual shafts may work, they did a lot of work and had over 100hp, but finding one may not be easy. If I see anything in my searches I will post it so you can look at it.
 

·
Registered
Joined
·
10 Posts
Discussion Starter #6
thank you for helping me any info you could fin would be great my geo metro two seater convertable being a very light wieght car i don't know how big or powerful a motor i would need i have no idea of what kind of motor to look for i want to use the gas engine to power the motors so i would not have to use so many batteries thank for all you help in this matter what exact kind of motor did the guy use in the white zombiee car i am mechanically inclined as far as cars and mecahnics but not very knolageable about electric motors i think my car weighs a little over 1650 lbs i would like it to be able to go at lest 70 mph and if i could get the gas engine to propel it by keeping batteries charged should get well over 100 or mabee even 150 or 200 mpg it already get 45 to 50 mpg any ideas anyone thanks
 
1 - 6 of 6 Posts
Top