The problem with this, that many don't consider, is the hypoid differential. If you pull a big pickup off the highway and touch the differential housing you'll quickly realize the issue! There's a big efficiency hit to this assembly caused by the low noise right-angle hypoid drive pinion, there's a lot of shear friction forces in this by it's nature. This is why you never see them in factory mass-market EVs. The range will be poor!
On Sun, Jan 11, 2026 at 6:59 AM t ray via EV <[email protected]> wrote: > While I applaud these efforts to create a repairable EV, I believe there is > a better way. > I would like to see an electric motor assembly that is somewhat tubular, > small enough to occupy the driveshaft hump of any rear wheel/differential > driven car. The motor body can be long enough to contain as many electric > motors in a line as needed for good to excellent performance, all turning > the same shaft. If these motors are all turning a splined shaft, any > single motor could be replaced easily (cheaply) if it ever fails. The rear > of the motor would mate directly to the differential, using adapter plates > specific to that car. The motor shaft connects to the differential pinion > gear with a conventional U-joint.The front end of this tubular motor > assembly would be attached to the car frame in a conventional supporting > assembly, designed to carry the motor torque and mass. > Front wheel drive cars could also be converted, although the drive axles > would simply mate into a motor assembly that replaces the current > engine/transmission. In many cases, the existing transmission case shell > might be reworked (by CAD/CAM processes) to accept electric motors, as many > as needed for acceptable performance. One Lynch pancake motor for each > front wheel might do the job, but better motors may be available by now. > Discard the ICE, transmission, clutch, and driveshaft. Retain the radiator, > only if the new motor assembly needs liquid coolant. A coolant pump would > be added, then. Add battery banks and their attendant electrical controls. > The bottom line here is a "universal" electric power system to fit almost > any compact car, using a minimum of added hardware. I can imagine > commercial chains of "conversion shops" doing this work for any customer > who comes in with a suitable rolling chassis. The economies of scale would > keep the conversion costs low. > Any rolling chassis could then become an EV, with no extra bodywork or > crash testing needed. Most commuter cars with a blown ICE or wrecked > transmission are essentially worthless to the owner now. > Just a thought . . . 😎 > > On Sat, Jan 10, 2026 at 3:36 AM Cor van de Water via EV <[email protected] > > > wrote: > > > Interesting prototype > > > > > https://www.dezeen.com/2026/01/02/aria-repairabe-electric-car-tu-ecomotive-group/ > > Cor. > > _______________________________________________ > > Address messages to [email protected] > > 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/20260111/7fef19d7/attachment.htm > > > _______________________________________________ > Address messages to [email protected] > 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/20260111/1a737e2a/attachment.htm> _______________________________________________ Address messages to [email protected] No other addresses in TO and CC fields HELP: http://www.evdl.org/help/
