2020 Hyperion XP-1 Prototype

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burner94_@reddit

Recently discovered its existence thanks to The Crew Motorfest.

I wonder how the whole "one motor per wheel + 3-speed transmission" thing even works though. Sounds like marketing blabbering to me...

having an individual 3-speed transmission in each hub motor is very complex and likely heavy/non compact.
conversely, connecting four individual motors to a single transmission negates (or at the very least limits) the inherent torque vectoring ability of a multi motor system. The transmission would merely be used to "synchronise" the hub motors, which is more of a drawback than it is a benefit.

It'd only potentially make sense if the car had at least five electric motors: a main central one connected to the gearbox which in turn has driveshafts going to the four hub motors... But then again I also see it as an unnecessary complication.

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f8f84f30eecd621a2804@reddit

Each hub motor could have a three speed planetary gearbox?

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burner94_@reddit

that's the first point in my comment, yeah. I'd assume it's a bit of a pain to synchronise though, especially with no mechanical linkage between them. People experimented with such things in rally cars (obviously with combustion engines tho) as far back as the eighties, with very mixed results haha

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HayGoward@reddit

From that angle it’s incredible. Front end could use some work.

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basec0m@reddit

Looks like ass from every angle I've seen.

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MGPS@reddit

Oh yea I make all kinds of “prototypes” with Midjourney too. You know I’m something of a car designer myself….

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radiantskie@reddit

Straight out of 2010

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graneflatsis@reddit (OP)

Some info and more pics: https://www.carscoops.com/2024/04/you-can-buy-1-of-7-hyperion-xp-1-hypercar-prototypes-but-you-wont-get-the-2000-hp-hydrogen-powertrain

Excerpt:

According to the SBX Cars listing, the prototype is “fitted with electric propulsion and is drivable as a show car”. This means the winning bidder won’t experience the hydrogen fuel cell system, including the hydrogen tanks, supercapacitors, high-performance motors, and special gearbox planned for the production model.

Wiki: https://en.wikipedia.org/wiki/Hyperion_XP-1

The XP-1 is touted by Hyperion to be the first hydrogen-powered "supercar" and has a maximum driving range of 1,016 miles (1,635 km), assuming that 55% of the driving is city and 45% is on the highway. The XP-1's curb weight is 2,751 pounds (1,248 kg) typical of many other gasoline-powered supercars in its class, helped by an ultra-light carbon-titanium monocoque chassis. The range of the XP-1 is longer than other hydrogen-powered vehicles such as the Toyota Mirai or the Honda Clarity due to its larger hydrogen tank. Hyperion plans to create mobile refueling stations that can generate hydrogen on-site with electricity generated from solar power.[1] The XP-1 is powered by four electric motors, one at each wheel, which are powered by the main fuel cell. Hyperion states a top speed of 221 miles per hour (356 km/h) and a 0 to 60 mph (0 to 97 km/h) acceleration time of 2.2 seconds.[2] The XP-1 comes with a three-speed automatic transmission, and will use ultracapacitors to increase the power output of the fuel cell to the electric motors.[3]

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