Winching...

[ldjessee]

I am not a fan of added complexity, but the ability to change gear ratios may prove to be a useful tool for off-roading... but I would need to be convinced.

Might also let them have a slow off-road oriented gears at the low end, but allow for better efficiency the road. (I would need to be shown this)

This is a converted Wrangler... not a production model.

 

[Crissa]

Might also let them have a slow off-road oriented gears at the low end, but allow for better efficiency the road. (I would need to be shown this)

That's basically what it does. Lets you choose the crawl rate mechanically, which also increases the power to the wheels.

-Crissa

 

[Luke42]

the issue is that yes it is a off road capable ev but once you add that manual transmission you have added another level of failure points and second point is cybertruck is dimensions a ex us military humvee which means it can do more things than a wrangler

Bolting an electric motor onto a manual transmission vehicle is how the garage hotrodders made EV conversions 20 years ago.

I'd love to hear the engineering thought process behind using this method for a "look what we can do!" concept car.

I appreciate that a heavy transmission is part of the W&B for Jeeps, and that their traditional drive train is their secret sauce. But, replacing that heavy transmission with a heavy battery and switching to dual or quad motors strikes me as the way to go.

But, then again, I have made exactly 0 Jeep EV conversions IRL (though I've proposed a BOM for a CJ2 conversion), so I'd love to hear how the real engineers who actually built something decided on their approach.

 

[Frankenblob]

It wasn't damage I had in mind. The traction motors and gearing are designed to transmit power to the wheels of the vehicle and to do so at the maximum possible efficiency and that efficiency is chased to a fraction of a percent. To split the power mechanically would require extra gears, clutches, shafts, bearings etc and even while in the "disconnected" mode those components would introduce losses. That's not acceptable here where every watt counts. In addition you can't put a PTO shaft just anywhere. But you can run wire just anywhere.

Think a bit about the heat pump compressor. Why do you think it is driven by a separate electric motor as opposed to using mechanical takeoff from the traction motor as is done in ICE vehicles?

Yep, the more moving/working parts the increased chance there is of wasted efficiency, energy and failure.

I did trades for a stint and what I learned was the less complications - on a roof - ( dormers, valleys, skylights...) the better chance exists of no leaks or problems.

Casted parts for Tesla is a great idea.

 

[ldjessee]

As far as I have seen, this is not how Jeep intends for the all electric Wrangler production model to be built. This is a conversion to work as a prototype (and maybe test mule).

I am sure given the history of a diesel jeep and then the all electric Jeep, I could see given that history (and Nikola and the Hummer), I could see them wanting a show worthy concept that actually works, drives around, and is not rendered or a static display mockup.

 

[Deleted member 3316]

I am not aware of any deadspace under the cybertruck. between the batteries, vault cover, suspension and storage... unless you mean the storage under the bed and want to use that for the winch...

The Dead space would be between the “penthouse” under the rear seats and the rear motor assembly; as in the space Rivian are using for the gear tunnel in the R1T.
I have a feeling is might be taken up by the tonneau cover, but maybe there’s enough room for another motor and winch spool.

 

[ldjessee]

The Dead space would be between the “penthouse” under the rear seats and the rear motor assembly; as in the space Rivian are using for the gear tunnel in the R1T.
I have a feeling is might be taken up by the tonneau cover, but maybe there’s enough room for another motor and winch spool.

I believe that is where the vault cover stores, so not sure of any dead space in the Cybertruck.

 

[TechOps]

Bolting an electric motor onto a manual transmission vehicle is how the garage hotrodders made EV conversions 20 years ago.

I'd love to hear the engineering thought process behind using this method for a "look what we can do!" concept car.

It wasn't an engineering thought process.. it was a Dealer relations thought process... i.e. how are we going to keep our Jeep dealers in business with EVs? I got it, transmission repairs.

 

[Crissa]

Several of the racing bikes have transmissions, too.

While an electric motor has a very broad optimal torque and horsepower curves, they're still a narrower range than the vehicles are used.

Tesla solves this with overlapping optimal curves from multiple motors splined together, but this still limits bottom end torque and top end speed.

-Crissa

 

[Dirt Worker]

AC outlets are already planned. Way more powerful and efficient as Mr.Tesla argued with Edison over a little while back. A Warn Cyberwinch should be a given albeit not cheap. I'm sure this is one of the engineers fun projects at Tesla and/or Warn. I previously said DC outlets on this post. I'm an idiot for not proofreading.