but will it fly?
DeLorean considering all-electric reboot
251–260 of 343 posts
Re: DeLorean considering all-electric reboot
#252Earlier quoted context omitted.
If you judge distances well you can still pop your foot. The deceleration curve is optimized to be smooth (minimize jerk?).
After a week you can judge pretty well. I use my brake pedal maybe once a week nowdays unless i'm driving alone and wanna feel some Gs.
Is it hard to switch back and forth between a normal car after that?
Re: DeLorean considering all-electric reboot
#253Earlier quoted context omitted.
Do the Tesla’s still have differentials then? It would be cool to eliminate those two but then you’d need a motor for each wheel I guess.
Differentials still have a place. They allow wheels to be perfectly balanced when negotiating corners. That can be done with independent electric motors, but never perfectly. Lot of little factors have to be considered in the software. For instance, as a car corners weight shifts, this causes the diameters of pneumatic tires to change slightly. A mechanical differential handles this tiny effect seamlessly. Independen…
Good point. What about simply powering only the outer wheel? It could look at the steering position to decide when to do that?
Re: DeLorean considering all-electric reboot
#254but will it fly?
Re: DeLorean considering all-electric reboot
#255This is gonna suck for Tesla. More and more competitors are jumping at the EV market with their own unique brands. The idea that Tesla has an economic moat is laughable. GM also thought they were untouchable. Where are they now?
The battery factory and superchargers are the moats that Tesla has.
The cars, they're just the providing a market for the above
Re: DeLorean considering all-electric reboot
#256Earlier quoted context omitted.
Differentials still have a place. They allow wheels to be perfectly balanced when negotiating corners. That can be done with independent electric motors, but never perfectly. Lot of little factors have to be considered in the software. For instance, as a car corners weight shifts, this causes the diameters of pneumatic tires to change slightly. A mechanical differential handles this tiny effect seamlessly. Independen…
Good point. What about simply powering only the outer wheel? It could look at the steering position to decide when to do that?
So long as you are happy giving up 1/2 of your traction, that would only solve corners if the steering wheel is moving. Say your right wheel hits a bump. Even with zero steering input that right wheel is traveling slightly further than the left wheel. (Up and over the bump is longer than the strait line driven by the left wheel.) There also also times when the steering wheel moves but the car remains strait (crosswinds). The further one looks down this rabbit hole, the more appealing a simple mechanical differential becomes.
Re: DeLorean considering all-electric reboot
#257> National Highway Traffic Safety Administration (NHTSA) has completed a regulation permitting low volume motor vehicle manufacturers to begin selling replica cars that resemble vehicles produced at least 25 years ago. Congress enacted a DeLorean Motor Company-backed bill backed by the Specialty Equipment Market Association (SEMA) DeLorean Motor Company, and others into law in 2015, which streamlined requirements for…
> They could even do a stickshift EV if they wanted to, though most car companies seem to not think it's worth the complexity/maintenance, and I get the impression that electric motors are hard on transmissions. Electric motors have a wider power band, so there’s less need for gear shifting. They could get more efficiency with multiple gears, but it’s be a smaller benefit than in an ICE vehicle. One of the big early…
I think top gear did this when they staged a drag race between the original Tesla and its Donor car.
The amount of torque and electric vehicle can put out is huge.
Re: DeLorean considering all-electric reboot
#258Earlier quoted context omitted.
I would characterize his early (and spectacular) career at General Motors as where he “got his start”.
You took that quote out of context. "...creating snowcats when he purchased the Logan Machine Company" I'm aware of his automotive history. Just wanted to provide a different perspective of what other things he was doing around the same time.
Sure. If the question is "How did John Delorean start manufacturing snowcats?", then I completely butchered the quote.
If the question is "How did John Delorean get his start?" it seems to me like "at General Motors" is a better answer than "by buying LMC".
Re: DeLorean considering all-electric reboot
#259As a fun replica car in a limited run it makes sense. You wouldn't want a DMC-12 (even as an EV, where the lack of acceleration and power could be addressed) for a daily driver. The ergonomics of the design are terrible. It's a cool-looking car, but supremely uncomfortable to drive or ride in. I suppose that if you like attention it could be a "win". Driving one gets you a lot of attention, even 30+ years after "Back…
I couldn't care less about the insides, unless I'm doing a Back to the Future DeLorean replica. I care about the iconic exterior. As long as the shell is the same as the original, I'd pay the markup to buy one.
Re: DeLorean considering all-electric reboot
#260Earlier quoted context omitted.
> They could even do a stickshift EV if they wanted to, though most car companies seem to not think it's worth the complexity/maintenance, and I get the impression that electric motors are hard on transmissions. Electric motors have a wider power band, so there’s less need for gear shifting. They could get more efficiency with multiple gears, but it’s be a smaller benefit than in an ICE vehicle. One of the big early…
> On the other hand, different axles don’t have to use the same gearing ratio. That’s how dual motor Teslas work - the front wheels are geared for higher speeds, and more power is shifted towards those as you go faster. No gear-shifting required. Yep. Alternatively, the Porsche Taycan has an 2-speed transmission gearbox (cf. https://www.caranddriver.com/news/a28903274/porsche-taycan-t... ). I don't think gearboxes ar…
> I don't think gearboxes are going to become mainstream in EVs, with the exception of performance vehicles like this one.
I don't think transmissions will be the norm in performance vehicles either, since Tesla Roadster gen 2 will not have it, and Rimac seems to have moved away from it for Concept Two as well.
Teslas solution is to optimize the front and rear motors for different speeds.
There is also an experimental motor that can change "gears" by changing how it drives the windings in the motors. I don't remember the name right now.
Point is there are a few solutions that are simpler and lighter than adding a two-speed gearbox, with relatively little compromise.