--- 48 volt golf cart motor --- for diy hybrid possible?

[DavidP]

First post here ... so be kind ... I've been lurking for some time ...

I'm trying to adapt a golf cart motor myself ... to use with a very light weight EV conversion project ... a 1958 Isetta ...
Origionally equiped with a 'funky' little 13HP gas engine weighing just 790 lbs as it left the factory ...
I've just bought a D & D motor systems 8.9 hp and a 19 spline internal output that I will have to adapt ...
I'm sure it would of been easier if it had a standard output shaft, but I bought this motor *new* in the origional box for about 1/3 the regular price ...

Its a dd_motors_170-502-0001 with regen rated at either 36V or 48V

[Clev]

Originally Posted by DavidP

First post here ... so be kind ... I've been lurking for some time ...

I'm trying to adapt a golf cart motor myself ... to use with a very light weight EV conversion project ... a 1958 Isetta ...
Origionally equiped with a 'funky' little 13HP gas engine weighing just 790 lbs as it left the factory ...
I've just bought a D & D motor systems 8.9 hp and a 19 spline internal output that I will have to adapt ...
I'm sure it would of been easier if it had a standard output shaft, but I bought this motor *new* in the origional box for about 1/3 the regular price ...

Its a dd_motors_170-502-0001 with regen rated at either 36V or 48V

Sounds like a cool project. Most electric golf carts weigh in the 550-800 pound range, so you might be able to get away with it--as long as you're cool with the 50 mph top speed of the stock Isetta. I assume you got the controller as well?

Looking forward to a build log. Mods, can this be moved to its own thread?

[DavidP]

I'm already familiar with adapting an external (male) spline shaft, as I will be modifying the origional external 7 spline shaft on the chaincase to accept a 1" keyed shaft now ...
The internal 19 spline shaft may require a good machinist to take care of ...

[DavidP]

Not yet clev ... but I've found a couple of websites that list Alltrax controllers at very good prices ...

It states that "Alltrax has come out with a new set of field maps for the DCX Controllers to maximize the performance of these motors"

I just can't add a url yet, since I've only been lurking so far ...
I really wanted to add the url for the motor with all the spec's for people to review and add their comments ...

[NiHaoMike]

Originally Posted by basslover911

Well I can get a high output with regen for $400 (some president golf carts do have regen braking so...)

or what other cheap ideal solution would you see viable to use?

An industrial 208v 3 phase induction motor, 5-10HP or so.

[brucey]

Instead of using it for acceleration, why not use it for cruising and assisting the gas motor? This would still be a major help. How much resistance does a freewheeling motor have?

I just realized I can fit 48V of T105's in my trunk without losing access to the spare tire well. Or any real trunk space. I'd lose the ability to carry couches inside the car, but they could always go on the roof. I could cover it with a carpeted box resembling a sub-woofer, for that 'stealth' look. I've also got several good places to hook a motor into with 4 half shafts, a drive shaft, and a rear differential. Hmmm.

I might have to look into this. (:

[Ryland]

Originally Posted by DavidP

I'm already familiar with adapting an external (male) spline shaft, as I will be modifying the origional external 7 spline shaft on the chaincase to accept a 1" keyed shaft now ...
The internal 19 spline shaft may require a good machinist to take care of ...

Give me a few weeks then send me a privet message, I might have something for you at that point in time as I am working on a motorcycle project that is going to use a golf cart motor so my brother is running off some prototype shafts right now that fit 19 spline golf cart motors, he has two right now that were supposed to be pressed in to a bearing but were 1/1000" under sized that he is going to practice making splines on, one of those might work for your needs.

[DavidP]

Thank you for the offer Ryland ...
I'm sure there's a few people who would be interested in those 19 spline drive shafts ...

[raszpel]

Originally Posted by DavidP

Thank you for the offer Ryland ...
I'm sure there's a few people who would be interested in those 19 spline drive shafts ...

I am working on a 48Volt golf cart mod to be put into a early Metro Contertible. If there might be an extra 19 spline shaft out there I would really be interested in one. I would not car if they were slightly miss sized. I am starting to design a new end plate for the motor. I got some good ideas from a go cart mod with a golf cart motor. He made his own end plate and bearing housings. I already have my 275 amp Curtis Controller and Sepex 48v motor. I plan on making my own pedal/pot box. I found a place that sells the same pot as a P6 box for $33.00.

I am going to try and keep the clutch function. Which I hope will give me a top speed of 45 or 50. I also have been pondering a secondary Etek clone from Ebay at 48v as a power/hill/acceleration booster running off an electric clutch.

Just starting but very excited, after months of research. Please keep me in mind if any extra 19 spline shafts become available.

[Frank Lee]

Originally Posted by brucey

Instead of using it for acceleration, why not use it for cruising and assisting the gas motor? This would still be a major help. How much resistance does a freewheeling motor have?

You beat me to it- that's what I was thinking, and what I'd do. The gasser makes the power and that's what you need to get moving. The electric has the efficiency and that's what you want for the "hyperextended glides" such a setup would allow.

Tempo/Topaz also has OEM AWD stuff readily available...