There are tons of hub motors used on e-bikes and stand-up scooters. Most of the time you will see that even these tiny motors aren't paired with suspensions because then you get wheel hop.
If they are used on wheels that control your steering, then if you are turning and hit a bump, you lose both traction and steering, and at least for a short while the car goes where inertia says. A wheel with a motor installed has much more mass relative to the "sprung" portion of the vehicle, so it will stay in the air much longer. Using one on the rear of an Aptera wouldn't be too terrible, but they don't do that, it's either only on the 2 front wheels, or all 3. There is no config with only one in the rear. No thanks! On Wed, Jul 26, 2023 at 5:07 PM Ryan Fulcher via EV <ev@lists.evdl.org> wrote: > The hub motors that Aptera are using are made by Elaphe, see these videos I > posted earlier: > >>>>>> On 7/8/2023 8:51 PM, Ryan Fulcher wrote: > >>>>>>> https://youtu.be/CqPMtEIT3f4 > >>>>>>> https://youtu.be/1alRUqx9UX8 > > Also, in case anyone saw the recent national news story where an Aptera > overheated... We got details later, that car was a Gamma prototype from 18 > months ago for mostly aesthetic demos. So it never has any cooling system > components installed, so it's actually done quite well for basically being > run with no active thermal management to speak of... > > On Wed, Jul 26, 2023, 16:24 Josh Landess via EV <ev@lists.evdl.org> wrote: > > > I do think it's fair to give these things a chance in the public > > marketplace, especially if it could be in a moderate passenger EV that > > tries to highlight some of their strengths and not their weaknesses. I > > personally still would not consider buying one unless or until we see > > extensive uninhibited feedback from unbiased drivers simply talking > > about their experiences, good, bad or indifferent. > > > > A part of the problem is that such motors have been mentioned various > > times as integral to saving energy and being part of an important EV > > project, and then, somehow, they just don't quite make it to where we > > can consider buying it. > > > > It's been a long time, but taking a quick look around I see these two > > in-wheel hub motor providers are still in theory trying to make a go of > > it. There may be many more (perhaps someone can say who Aptera is using > > if it isn't already clear), but just noting these two: > > https://www.proteanelectric.com/ > > more than a decade ago, I seem to remember them issuing a white paper > > that attempted to lay out some of the arguments in-favor-of, and address > > some of the criticisms. I don't know where things stand these days, but > > taking a way-overly-quick look, it does seem at least they are still in > > discussion with some automakers: > > https://www.proteanelectric.com/news/ > > > > for example: > > > > 28.Apr.23 > > Dongfeng Motor Showcases All-Wheel Drive Luxury Sedan Powered By > > ProteanDrive, Weeks After Announcing Version Driven By Two In-Wheel > Motors > > > > > > and we have this other blast-from-the-past: > > https://www.saietta.com/about-us/ > > however, I don't know if they are presently trying to offer the in-wheel > > product. I don't presently see language about it on their page. > > > -------------- next part -------------- > An HTML attachment was scrubbed... > URL: < > http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20230726/b34fd10e/attachment.htm > > > _______________________________________________ > Address messages to ev@lists.evdl.org > No other addresses in TO and CC fields > HELP: http://www.evdl.org/help/ > > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20230726/ea6bb5bb/attachment.htm> _______________________________________________ Address messages to ev@lists.evdl.org No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
