Cannonball Run EV record attempt in a modified R1T

[Scottski]

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[Mr. Ham]

Ha. I just finished watching and hopped on here to see if anyone shared yet.
Definitely a fun watch and looking forward to part 2 to see how it goes.

 

[Donald Stanfield]

Probably not. There, I just answered the central question in the video and saved everyone 10 min.

 

[Mr. Ham]

Probably not. There, I just answered the central question in the video and saved everyone 10 min.

Well. Anyone can “attempt” anything.

 

[Thedude]

I don’t see how choosing one of the least efficient EVs that also has a relatively poor charging curve is a recipe for a record breaking attempt.

 

[beatle]

It was a good watch.

The additional capacity really only does a couple of things though: reducing the number of charging stops needed, and marginally increasing the charging speed via the secondary pack, since it's not limited the same way the primary pack is. It is a neat technical experiment, but I think some napkin math could illustrate what the ballpark of a theoretical best time would be.

Increasing the charging speed would go a long way to cutting down the time, and increasing efficiency would be even better. This is why the Taycan was such a good performer, even with a smaller battery.

 

[mkhuffman]

If they can go 500-600 miles between charges, and charge at an average speed of 400-500 kW, they should win.

 

[COdogman]

Cannonball runs are not as funny as they used to be

 

[beatle]

One really important metric that the video didn't talk about is at what average C rating they charge. The extended Rivian might charge at 500kw overall, but it also has to fill a battery that's over 3x the size of the Taycan. 500/310 = 1.61C. A max pack truck is already pretty close to this C rating: 220kw / 141kwh = 1.56C

The Taycan can charge at 320kw, and it just needs to fill a 97kwh battery. 320/97 = 3.29C! For an equivalent C rating charge, the extended Rivian would need to charge at 1 megawatt! The area under the charging curve is also what matters, but this is just napkin math. I'm not even considering the charging overhead associated with plugging into two chargers and configuring the truck to accept it. It does look like part 2 will reduce that overhead though.

They're also not getting 500-600 miles every stop, as that would require full batteries. They do get a jump ahead with both batteries fully charged though. Realistically they'd be getting up to 80% at each stop, though I'm guessing all EV cannonballs have charging cycles like this.

 

[VandalSibs]

Watched this earlier and I think one thing that I'm interested in will be what, if any, changes they make in attempt two which they tease ("One Year Later"). Maybe there's something that happens that will affect things a bit more...

 

[SadHill]

Interesting but a lot to watch to see nothing.
part 2 maybe ????

 

[Cycliste]

Watched this earlier and I think one thing that I'm interested in will be what, if any, changes they make in attempt two which they tease ("One Year Later"). Maybe there's something that happens that will affect things a bit more...

I would guess ability to charge in rain, decreasing setup needed at each charging stop, and state of charge in the auxiliary pack would be very nice

 

[rhuber]

What an absurdly silly project...

 

[godfodder0901]

What an absurdly silly project...

You've clearly not watched alot of Aging Wheels... Obsure is kinda in Robert's wheelhouse.

 

[therealcmj]

The most interesting bits of it for me were cracking open the pack, showing the frame, and discussing some of the other items we don’t have access to. Like the high voltage connection that was originally intended for a winch.

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