Electric Hub Cap

[Harold in CR]

Has this ever been discussed on ES ??? Did a search and nothing even close came up ?? Before laughing, maybe check out the design, and then, add comments.

Also has a controller designed to go with it, that MIGHT be useful for modding for the Large BLDC motors ??

http://members.shaw.ca/Craig-C/hybridize/EHMotorMakingManual.html

 

[bluegoatwoods]

Well, it's certainly an interesting idea.

And I appreciate the guy taking the time to give so much info while, apparently, giving up any notion of protecting his idea. He seems to be giving it to the public domain.

I gotta wonder, though, if electric motors mounted on the outside of wheels would be road legal.

 

[Zoot Katz]

Well, it's certainly an interesting idea.

And I appreciate the guy taking the time to give so much info while, apparently, giving up any notion of protecting his idea. He seems to be giving it to the public domain. . . .

The bottom line says "Electric Hubcap is a trademark of Turquoise Energy Limited".

 

[Harold in CR]

I think he trademarked the name, not the details.

All through the article, he talks about how to change different things and figure out the math for varying setups. It certainly looks "open Source" to me.

One thing I was intrigued with was those homemade coils.

I know that electric brakes on some trailers use that "Hockey Puck" design. I was wondering if they could be used for motor coils ?? I'm not sure of the dimensions, but, this could be made up for an EMoto motor, maybe ?? He says he figures 5HP@ 2500 RPM's. Weight is 32 pounds or so, and, if it could be lightened up, this is the Axial Flux motor design that was intensely discussed in another thread.

Maybe one of the motor guys on ES could give this the eyeball, and comment on the possibilities of making a more powerful, smaller design motor ??

That's the main reason I posted this thing, more input.

 

[TylerDurden]

Anybody can "claim trademark", it doesn't mean much until registered.

As for the motor... the efficiency claims are a little hard to believe, IMO.

 

[Hillhater]

Thanks Harold.
Good reading for any budding motor builder.
and some very good explanations of BLDC motor theory.
Also some very clever ideas and "re-purposing" of available materials. ( those "nail cored" coils !)

 

[rkosiorek]

Have any of you guys checked out his YouTube videos. he's got several including using the motor as an outboard motor boat. at startup the motor is quite noisy. but hey it is only a prototype.

[youtube]aH9iAp_pMR4[/youtube]

also i think that the external mounting was only a Proof of concept and not what he intends the finished product to be at all.

this guy might actually get a working marketable product. i like his method of not over analyzing stuff to death. He started with some basics and is now incrementally improving it.

rick

 

[liveforphysics]

I like the part where he says it's probably about as good as the most efficient motors made, but he doesn't have the time or resources to find out.


Still though, I commend the guy for actually trying things and doing something, taking that step in the right direction, and sharing it openly with the world.

 

[Harold in CR]

Luke
Do you have any thoughts on the electric brake coils I mentioned ?? I never took one apart. Might they be something that could work, for an axial flux stator ??

Damn, just did a search for those coils, and, what popped up ?????????????

http://members.shaw.ca/Craig-C/hybridize/EHMotorMakingManual.html

I got some more reading to do. :lol:

 

[Ragonamuffin]

I would use that to make a hybrid car out of any old car with regen for brakes and such. Too bad its rather weak. Sounds like an accident waiting to happen!
http://www.youtube.com/watch?v=p8kpKaYpSqM&feature=related

 

[spinningmagnets]

I have a soft spot in my heart for anyone who wants to provide a pic-heavy tutorial for any E-conversion, but...there are some issues with this, though I still do applaud the effort.

If there was only a very small difference in the efficiency between this and some of the more conventional E-conversions, it would be a viable alternative for anyone who had some DIY skills and a tight budget.

not everything that we have learned on E-bikes and E-motorcycles is directly transferable to E-cars, but enough relates that some basics need to be considered. E-bikes have some fairly happy Direct-Drive (DD) hub users because the weight of a bike is low, the speeds are typically under 30-MPH, and the battery pack that can provide a 30-minute ride @ 20-MPH (avg, : approx 10 miles)..is reasonably affordable.

Add the weight of a car (even a light one). Then, add the speed needed for even a 45-MPH street-only EV (no 65-MPH highway driving), then the killer: add the needed range. Ten miles between charges, if using lead acid, you'd need a 20-mile pack to get 10, and even for a measly 45-MPH, I'd recommend 72V as a MINIMUM.

The only place for a hub-motor on an EV-car is to add the temporary capability for AWD on the normally NON-driven axle. Get a small and light FWD car with a manual trans. Adapt onto the transaxle an appropriate motor. Even just using two of the gears in a standard 5-speed trans would have a huge benfit to battery range, and keeping down the twin evils of motor-heat and controller-heat.

Many gasoline engines run from 3,000-6,000-RPMs, so most appropriately sized E-motors would stay in their efficient range with no changes to the stock differential gears. From 0-30 MPH, hub-wheel motors on a car are converting way too much of the batteries W/H into waste-heat. Short range and poor performance.

 

[REdiculous]

There's a thread on this here somewhere, I know I've seen it before, but I don't have the search-fu to find it.

As a bolt-on DIY experiment it's really cool. As a product, it wouldn't sell.

just over 30 pounds for over 5 horsepower

Well there's your problem. The idea of adding 30lbs to each wheel and only getting 20HP for it seems pretty silly. If it takes you 200 hours to build 4 motors (roughly 2 days per motor) and you "pay yourself" $10/hr then they've cost $2000, before materials. That's more expensive than an Agni and an Agni is more powerful.....seems like a better deal just to save the pennies and get a real motor.