The Engineering Behind The World's Fastest Electric Vehicle
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- čas přidán 14. 05. 2024
- Two Tesla powertrains installed in a car built over 60 years ago just went faster than any other electric vehicle. EV racing is starting to get really interesting.
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the badass part: this car started the record run on it's own with a 2:1 direct drive. nothing else but an EV can achieve that, the load must be insane.
pretty sure gas turbines *can* do that, their torque graph looks very similar to electric motors...
@@AKAtheA a good example of misconceptions in EV dynamics
@@AKAtheA Gas turbines have a minimum speed they need to operate; if they're not spinning, they're not compressing air into the combustion chamber, there's no combustion, and there's no power. This is why such turbines aren't self-starting. The output torque curve of an electric motor goes all the way to 0 RPM, the torque curve of a gas turbine does not.
The torque curve of a *steam* turbine, or some other type which has high pressure fluid being pushed through it from an external source, goes all the way to zero... but the curve for any Brayton-cycle turbine will not.
@@Smidge204 the gas generator and power turbine are separate stages on certain designs. You can stall the output shaft on a turboshaft engine
@@Smidge204 very few gas turbines have the LP turbine mechanically locked to the compressor and HP turbine. Because it's free to spin independent of the gas generator, it gives torque right from stall.
Nitpick:
Aerodynamic drag is quadratic (squared), not exponential. There is 4x as much drag when going 2x as fast.
Power needed to overcome aerodynamic drag is cubic. You need 8x as much power to go 2x as fast.
Not a "nitpick" very important for us non engineers, non math minds, to understand!! Thanks for adding this.
Came to look for this comment, I know almost everyone makes the mistake but at least engineers shoud try to do better
Drag=1/2Rho *Cd *v^2 *s
Why do you need 8x the power when drag only increased by 4x?
@@Chris-bg8mk Power = Force * Velocity
@@Chris-bg8mk Power = work /time
Work = force * distance
So Power = force * speed (and force is your aero drag calculation plus rolling resistance etc)
That was great. Can't believe a design so old is still leading the way.
The funny thing about computers is they do the same calculations we used to do with wood, they just do it faster.
aero could use a lot of work, could be much faster. but why build a new car when you already have one that's good enough.
Well those guys were something else back then. They did get a man on the moon on a pocketcalculator
Back then, they made a leap forward with electronic systems, to get the man to the moon.
They could still use the same chassis and create a better bodywork. Maybe they are sticking to what they know and to what they tink is safe to drive, managing only one difference at time.
Also budget could be a limit.
@@lorenzosguaitamatti It isn't immediately clear how to improve the body work. Maybe smaller front wheels and get rid of those ridges, but that could negatively impact rolling resistance. To improve for sure would require a lot of time field testing or time in a wind tunnel. both are expensive.
As someone who owns a 300w LED flashlight that puts out about 19,000 lumens, I can confirm that a 1000w flashlight would be insanely bright.
I own a flashlight with a “mere” 4200 lumens and it burned through my jacket pocket without even being on turbo.
@@DevReaper Sounds like a D4V2 or similar light. Nice.
@@MrGatlin98 yep spot on D4V2 with SST-20 5000k leds
The Imalent MS18 has a Peak power of round about 1000 watts. 🤟😎
I hate to be that guy, but it's kWh not w.
Yep, I'm here to ruin your joke. 😂
In 63 years it will be fusion powered using banana peals!
I'm not sure about the algorithm, but I'm really impressed both by the video and the car
Trust the algorithm. It knows.
All hail the algorithm
All Hail the algorithm
The Vesco family are legends in land speed racing - it's cool to see that still running and setting records.
Anyone know if this is the family that once included "Don Vesco", who I saw run there in 1976 running as I remember two road racing two stroke engines?.......
Almost forgot, it was a two wheeled motorcycle.
@@rdaw33 Yes , Don Vesco Yamaha in El Cajon Calif. I raced motocross for them in the mid 70's.
Gotta love the engineering that goes into landspeed racing!!!!!
Same here. I am curious if the engineers working on the fastest electric car will do a solid oxide fuel cell (SOFC) run. Those could run on kerosene or ethanol, and output megawatts. If using e-kerosene (produced using renewable electricity, developed by Siemens), we would have the fastest green car in the world. :)
@@thatguyalex2835 the engineer working on the fastest electric motorcycle is not doing that. 😉
If you're having trouble wrapping your head around the concept of putting 2 or more electric motors or any kind of motors together and getting them to work together and not against each other, just think about how the cylinders in a multi cylinder engine work together, there may be a slight mismatch in power between the cylinders and some percentage of "fighting". The average is a increase in power.
No. These motors are not coasting. If one motor outputs 5% more than the other that is not a big deal. Even a 20% difference is fine.
@@nordic5490 Not exactly. If they are putting out different levels of torque then that's perfectly fine. The issue at hand with syncing electric motors is frequency and speed. It is imperative that both inverters be driving the same frequency and thus speed to both of the motors. As long as they did the code right the first time then they are good. If they differ though. You get very large problems which results in massive motor/inverter strain in the form of excess current and heat buildup. This is why we use synchronization tech with our power grid to make sure the motors are spinning at the same speed and the phase angle is the same. One motor shooting for 5000 rpms and the other being slightly different will cause a ton of stress on both motors as both rotors are now fighting their perspective rotating magnetic fields because they are constrained together. The major benefit is that most inverters these days are smart enough to detect issues like this and avoid them or you can just run them in torque mode so that the frequency output is driven by the rotor speed alone.
@@geemee3364 Yes, but the control of both is Amps. So the "throttle" is controling the torque, not the speed. But yes, you need two seperate inverters to do that trick.
What I don't get is what the belt is for. You could drive one wheel with each drive train without coupling the motors and without any differential.
@@wolfgangschroeppel How would that look like? Cross wind would be a problem with this idea: Two bikes next to each other, but staggered staggered. The motor for each wheel is in the other bike. Directly connected by 4 shafts. Pendulum axis like on a bug.
An inverter is simply a form of amplifier, it amplifies a signal. In a solar power system the signal is the frequency of the mains voltage required ie 50 or 60 Hz depending on your country. There seems to be no reason you couldn't use a single signal generator (speed controller) to control multiple inverters, in fact that is the way many multiple inverter systems work.
Something about your videos is just perfect. Entertaining and technical, one of my favorite channels. Maybe my favorite car channel. Maybe my favorite channel of them all.
yeah, he's definitely hit a sweet spot
I wish more videos would explain the C ratings of the charge and discharge of batteries, this is just as important as capacity when it comes to performance.
I wish was that every god damn battery from every brand had C rating graphics as we have to search online for community tests to find out how good they are and most brands lie.
Capacitors will give more instant power than just batteries. Add lots of big capacitors along with batteries. Capacitors can deliver their charge faster than batteries.
@@Suchness2000 LTO is a better choice
Outstanding tube Matt!
Apart from the stuff already noted I loved the throttle with the toe clip to pull it up in case it sticks and one tyre down to the cords. Gold.
This was easily the best delivered explanation of how and why I've ever seen. Thanks Matt.
Great video. Love seeing the evolution of the channel.
Great video! Super cool to get some additional info about some of the "teething" problems the team had when going for the record and how they solved for them!
Excellent as always Matt, many thanks 👍 First merch arrived yesterday in the UK (stickers) 😃
Nicely built video Matt. Thanks for it!!
Excellent story. Thank you for sharing the engineering details!
Well produced and informative. Great job mate.
This channel is the most interesting and entertaining channel in CZcams. It is always like christmas to notice there is a new episode available to watch!
Entertained and learned a bit. Thanks for the video Matt!
Thanks for the video Matt it's really really really good and both educational and entertaining
Another excellent video. Thank you!
I love that they have a chassis that old that is still holding up and laying down some record runs.
Great stuff Matt! All hail the algorhitm!
Another reason to love SFM ... the science of speed explained in a way even I can understand. Thanks.
“Omnes algorithmus salvete”
This was an awesome video, well thought out, narrated well, visual aids etc.
love your content thanks for making this
Thanks for another informative video Matt!
Amazing history in that car. Too cool.
Excellent video. I love your editing
SFM: You are a fabulous teacher, presenter, describer. You have a 76 year old Fan Boy here. THANKYOU.
The TGV uses electric motors and that managed 357mph (5mph faster than this) in 2007… Guess the diesel generators it uses to power it’s bogies kind of makes it a hybrid rather than a full electric record though.
Diesel-electric hybrid, not a battery-EV
The TGV is an all electric train
TGV has no diesel engine, it is powered by overhead powerlines, like in any civilised country.
Your content is ridiculously fascinating!
Very interesting stuff mat.
Can't wait to see the jag finally get finished and seeing the reactions 😇
Excellent little docu video. Well done.
Loving your content!
This is one of the best storylines you have published.
Excellent presentation
I didn't know that about the hybrid batteries. Great info as usual.
2:54 love that ghost on the garage floor
Positive algorithm engagement comment! I like these short docos, you explain things well.
The model b to model s joke made me laugh too hard
great vids matt!
Excellent, thanks.
Nice video. Bonneville seems like a cool place
I like how they are using a Fireboard BBQ temp monitor on the battery.. 6 probes sharing temp data via Bluetooth and wifi to the cloud… why wouldn’t you…
That was awesome.
Liked, commented, subscribed
All hail the bald tyre
All hail passionate people
Seems like a dedicated chassis is what they really need. Design if from the ground up to hold 4 or 6 battery packs and 4 motors and drivers. Land speed cars are weird in that they don’t care about weight or maneuverability so they could make it longer without much drag penalty to fit everything in.
I love seeing pieces on Bonneville builds
I'd love to see how they designed that Belt drive system for the motors! Amazing that it can handle a thousand horsepower!
That was good. The way you showed the rapid advances makes me confident they will beat the ice cars. If they only had room for a longer battery box they might have had the class record.
This is great! I was curious, and now I know!
You have the best content. I have yet to be disappointed.
Good stuff 👍
8:39 Dang, I need to step up my 100W LED flashlight with 9 more
I wonder if you could make some sort of supercap setup work? You would need tons of space but they would spit out as much power as you need
Thanks for sharing.
Always great videos. Hello from Brazil
The Vesco's are a great family....When I raced Yamaha TZ motorcyles back in the late 70's early 80's they always seemed to have parts in stock for our bikes even when Yamaha USA had empty shelves....Bonneville Royalty right there👍
Thanks for the details. seeing that Tesla drivetrain I thought they had two motors/ rotors going there, but I didnt knew the other cylinder was just an inverter... :)
such a great story
thank you
Pretty frigging cool! Thanks!
Cool vid, thanks Matt.
Great vid! Thanks!!
Great video!
Incredible and enlightening, great wake up
All hail the algorithm!
Thanks for this vid Matt.
Love the landspeed videos!
All hail the Algorithm!
Hmmm. Another LSR video and evidence that you've been reading the rule book... Matt's future project is aimed at breaking a record.
As soon as he fantasised, I mean hypothesised, putting four tesla motors in there I knew he is prepping an idea. Maybe a hyper-Honda on the way or a a Super Fast Mattster is in the works.
Very interesting, thanks for sharing 😎😎😎
Has anyone said you’re an awesome presenter yet? And this video was absolutely amazing.
Thank you for another great video. It deserves a "Clarkson", the award for a great motoring video. Thanks again. P
Thanks for sharing. 😉👌🏻
Amazing those TESLA motors,AMAZING TECH
Darn, that's about 5km/h faster than the TGV's max speed! Impressive!
Still not faster than a MAGLEV though, but the video is fascinating and explains all the engineering that went into packing as much power as possible into that tiny thing, well done!
Awesome! Thanks!
Thats Cool Thanks Matt
In regards to my comment earlier, the engines weighed 270,000 lb each , the generator side was over 50,000 lb, so with rotating mass of pistons, rods, camshaft, crankshaft, flywheel, and rotor all coupled and spinning at 327 rpm, approximately 50,000 lb rotating.
Funn video thanks for sharinn great edit as well
Thanks Matt for another video full of facts and funny comments.
Would it be worthwhile to have two separate battery banks and switch between the two every 10s for example? So bank 1 can run at max/best output for 10s then swap to bank 2 for 10s and repeat.
Drag is nowhere near exponential until you start getting into transonic regimes, around Mach 0.8 or 600mph, and even that's just a narrow band until you punch into supersonic. Typically, ram drag is quadratic. It might go up a little faster than square if there is some bad interaction between turbulence and the ground, but it's still going to be polynomial growth, not exponential.
Yeah, it's common to confuse x^2 and x^x in speech. I just think of exponential as a synonym for quadratic unless the speaker writes an equation.
This car is soo cool. We were on a road trip and spotted this car parked at a casino in Wendover... the kids all jumped out and we got a picture in front of it. I had no idea it had the world record!
Very cool. A place I have always wanted to visit
Gotta love the engineering that goes into landspeed racing!!!!!. Gotta love the engineering that goes into landspeed racing!!!!!.
Interesting video. When you see a video like this, it really is way too easy to wonder - why didn't they think of c-rating earlier? That seems like too obvious a requirement to have been overlooked. Mission accomplished though - it just occurs to me in hindsight that they should never have bothered coming to the track until the numbers said it would work.
They probably did. But published c-rating is not the same as actual max c - you can push most batteries past their rated limits if you ignore things like longevity. But you don't know how far they'll go until you try. You obviously can't easily test 1MW output outside of the car, although you'd think they could've tested individual cells.
That was covered in the video - you don't know your battery pack's actual C rating until you load it up and send it down the track
I've been in the same place, there's only so much testing you can do on the bench. The salt is the ultimate test bench
@@dirkmohrmann8960 Most of the new "square" (non-cylindrical) EVE-style LiIon cells struggle beyond C1, so they would have had to come to the track with a C15 solution - it sounds like - as you mentioned. That's 15+- circuits configurable suppling C1 each ...
@@EdwardTilley hobbyist rc vehicles have batteries up to 50C. They get big though, to have a low enough internal resistance to support that much current.
And expensive.
In FPV drone racing they use LiPo batteries, that have a C rating of over 100. This much wouldn't be needed for this application, but you could also reduce the overall weight if you carefully choose the batteries to almost fully discharge at the end of the run.
Quality video
Great stuff, now how about that ev jag? 😁
cant wait for the onboard fission reactor ev class at bonneville.
Do you know the continuos c-rating for the Honda cells?
I love the “0 - a lot” graph 😂
The car that reached 100km/h is the one bullet shaped shown at beginning. It was french and called la jamais contente translates to the never happy😉
Love it. Fascinating.
Another great video, Matt! Many thanks for all your hard work.
I’m currently building a Lotus 11 but my Mk 2 will definitely be electric powered!
Thanks for another interesting video. It wasn't that long ago, where the bottleneck would have been the motors; high output electric motors used to be inordinately heavy. Now, we have polyphase, AC motors that are very small, and incredibly efficient. So we're back to the batteries failure to give up their electrons fast enough (and not catch fire while doing so). Makes me wonder, if a thermionic "battery" would work? Imagine an EV shooting plasma out it's tail..
I also wonder: Could primary batteries do better? Yes-- you'd need to replace the entire pack after each run, but... speed isn't about saving money, is it?
@@bobpowers9862 in theory it isnt, in reality it has to be
@@cyjan3k823 I mean, true, but I think his point was that acceptable cost is different for a racing team than a person commuting to work in a Honda. Like the people jumping at Formula 1's zero net emission fuel as a solution to not having to have electric vehicles. Is it awesome? Sure, if you're willing to spend $100 a liter.
Vesco a name associated with Fast and Quick. Salt racing and the Quarter Mile Drag racing. Awesome company …