Super Capacitor Dragster
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- Опубліковано 25 бер 2020
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Featuring:
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@PeterSripol
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Truck making love to the dragster
“Who is...?”
Sees William Osman
“Ahh yeah that makes sense”
of course uis William Osman!
Yeah that’s William for ya😂😂😂
i wish the backyard scientist was in it for more than a few seconds, he would have attached rockets.
Colinfurze would have added a jet micheal reeves would attach a taser and the hack smith would add a plasma cutter 😂
badman scott 👍
We ALSO learned that there's a reason EVs have their batteries in the floor and not on the roof, and there's a reason dragsters only use minimal steering at speed.
Is the minimal steering cause of weight or is there another reason?
Edward Okeyo Obala because they are always on the edge of traction at the rear wheels.
Oh snap now I get you I thought you were talking about why the front steering mechanism and input system is usually small... But yeah if you make a slight turn you are going to flip
@@edwardokeyoobala380 Exactly. Good old Newton. That steering force has to go somewhere and it's much easier to flip it on its side than to overcome the inertia of it's forward travel.
Also, real drag cars will spin their wheels at 100 mph, and take throttle control to ride the line of max power without wheel spin.
Peter: "I think I have better skill"
*Immediately breaks it*
He didn't specify what skill he's better at, it just happens to be the skill of breaking dragsters
@@Morbpious ok Canada
@@jacobpugpoirier3350 you see, if you search up malk it's almond milk so your insult doesn't count
What I learned from this video: Peter Stripol casually carries and spins a Karambit
Duh he plays csgo lol
Will Osman has like the shakiest camera skills i've ever seen.
This is why he has Cameraman John
that's probably why he needs cameraman John
He needs a phone with OIS
@@SirDragonClaw Not even that can save him filming solo lol
Almost puke watching the shaky video!
I laughed soo hard when u stole that guys plug lol
Sorry! Sorry!
The most unexpected hilarious thing I've seen all week.
Brilliant 👍🏼
I hate to say it but it looked scripted, that guy had a go before tom did anything.
Still is funny
The joke at 0:03 caught me off guard. Bro I died laughing at that.
Next time I'm with my girlfriend, I'll tell her I am a supercapacitor lover.
Over in a matter of minutes? :D
Seconds 😂
Milliseconds
Nanoseconds
Micro seconds
Using your numbers on the car: You could charge the super-capacitor 180 times during that same 45 min lithium charge window and have a much larger overall operating time with sc's
Thanks for doing the calculation. Now if only there was a way to transmit power through Earth like Tesla wanted to do, we wouldn't need caps eaither
yes, i was thinking the same thing. and then how do you charge it. but then thinking about light rail or maybe even city buses. this would actually work pretty good vs having to run wires over the road or track. anyw, they are quite amazing used in the right situation.
@@jmac1099 Perhaps one could use inductive charging at stoplights and such for city busses.
You'd also have to screw around with charging the thing 180 times.
@@manipulativer we know how Tesla wanted to transmit power. With induction. It's literally how we wirelessly charge phones. And the efficiency is trash(30%) and it barely works at all over longer ranges, and that won't change. If you want to go fast with electricity take a train.
2:15 and that's how Tom got demonetized
😂
😂🤣😂😂😂😂😂😂🤣😂🤣😂😂😂🤣😂🤣😂😂
Dang the weights to horsepower ratio is very good
It’s nuts
I'm an engineer (electrical, focus = robotics) too and participate in many STEM events at my work place. You content is absolutely amazing; I feel it should be required content for any STEM based school or academy. Keep up the good work! I may try my own version of your helicopter with no swash plate...seems like a cool project.
Electric engineer? Hi! ...I'd like to ask...why are there no hybrid tech in cars using supercaps instead of batteries? There's gotta be a better reason than just 'sizes', right? It would be cool to have an 'electric nitrous' system
“Good job noob”-Peter Sripol 2020
why is that guy just so dislikable
*Peter Strip Pole
@@ti3685 because his character is too different from yours, its impossible to like everyone. We are all different despite the fake mantra of political correctness.
@@ti3685 Peter Sripol flew an airplane he build from scratch. What have you done lately?
2:17 And that kids, is how cars are made
I don't get it.
That’s how mopeds are made
😂😂
@@n3gi_ You are too young
ベジータ because u are too young
The moment I saw Peter Sripol I was surprised lol. Didn't expect him to appear
I love how William osman just has a presence everywhere on the internet
Would there be any advantage in using super caps as an "energy cache", eg. for take-off power or for reducing wear on batteries?
My thoughts exactly, besides I've seen somewhere here in UA-cam an experiment in China where they installed capacitors in a bus and charge it in each bus stop
Capacitors maybe great,
But let us consider the price compare to batteries.
The more capacitance it has the more expensive it is compare to li-ion batteries.
Plus its bulky size, you can’t just compress a high capacitance capacitor cuz it requires wider area of plate for a high capacitance or for more energy it can store.
@@kontde Modern busses, including petrol-powered ones, use flywheels to store kinetic energy. Simply put the energy from the brakes is used to power a wheel inside a vacuum chamber that can spin over 30,000 RPM. When the power is needed, the generator is reversed, and the power from the wheel is transformed into electrical energy that is sent to the wheels.
It's also employed in race cars. Formula E uses flywheel energy storage, as well as some hybrid Le-mans prototypes (919 Porsche for example). F1 uses a battery system (possibly Li-ion) since its still more efficient in terms of space to energy stored, however.
The channel "Real engineering" has a great video about that. Search for "Real engineering Tesla" and you should find it. The title says something with Batteries. Tesla bought a super cap Company to use These caps for the exact same reasons you mentioned in Your comment.
ive seen a capacitor bank for race drones to use on launches
What’s the relative energy density is these super capacitors vs lithium ion:
- by weight
- by volume
Very, very, very poor. Supercap energy density (volumetric and mass) is terrible, sadly.
The Supercaps advantage is in Power density instead of energy density
@@TheZio69 Do you need super caps for lasers or normal caps?
Don't forget about price!
@@thealienrobotanthropologist bad answer
Great to see the legendary Peter Sripol over here & making a contribution!
I don’t do longer foreplay. I finish like this capacitors in just 1 minute.
"What have we learned today?"
1. I'm not very good at building cars.
2. Super capacitors are pretty cool.
We already knew both of those things! Thanks for helping to keep us entertained!
Super Capacitors are really Cool ( :
"its really hard to steer at high speed"
well no shit, its made to go in a straight line.
Ever since I found this channel a few days ago, I've been all over it lol
I'm guessing within a week I'll have watched every video.
His detailed explanations of everything are what makes it gold
One problem with using super caps instead of batteries as a power source is the discharge curve. A battery has a nearly flat discharge curve until near the end where it drops off fairly suddenly. A capacitor starts to lose charge immediately and drops rapidly to virtually nothing. The two curves are nearly exact opposite to each other. While supercaps can store a lot of energy, I can't see them being used as a serious energy source due to that discharge curve.
Despite the above, I do like the demo you've done here and all the others. 3D printing makes building stuff so easy.
They definitely need a dc dc converter to be useful, and generally seem to have the most usefulness when used in combination with batteries. They can take the brunt of surges, in say acceleration in an EV or for regenerative braking, while keeping the output of the battery cells within a range that promotes longer lifespan. The main problem is that they're quite expensive and heavy, from both the cells and the added need of an extra power converter.
5:40 Dude, that sponsor segue was so smooth I was ten seconds into the ad before I knew.
Lmao that intro. Nailed it!
Haven't done the math for this setup but usually one should be careful with charging caps directly from a battery. The current peaks can decrease the life of a li-po. Which also leads us to the problem of all fast charging, it's cool but requires complicated infrastructure that can handle the power needed. Cool video btw :D
Nice video. I think there is a role for super caps in ev applications, the instantaneous power is useful for overcoming initial inertia, but from an efficiency point of view, not much gained. Good for overcoming any restrictive internal resistance in a battery system where that brings down efficiency where huge current surge's are demanded.
What do you think about supercaps in hybrid cars?
@@xXZ31t6esTXx anything that captures the energy that would normally be lost to heat via the conventional braking system has to be a good thing. So super capacitors used in a hybrid design can only increase efficiency. Its not so much the amount of energy that can be stored in caps for this application, rather the time to charge and discharge. Once a mass is moving, its much easier to keep it moving. Getting it to move from standstill is energy intensive.
Real rail dragsters had the same steering issue in the early days of drag racing. The fix was a very low ratio steering box. Lower your steering sensitivity by a huge margin.
Feedback: I miss the longer, more detailed vids
Bilal Habeeb same
Bilal Habeeb boooo I liked this style more entertaining
But hes got to get them views and making an informative video tends to not perform as well, even if we nerds love it.
I don’t know who this is but I’m blocking recommendations based on this video.
habirton thanks for telling us, but literally no one cares.
Build a elevated road bed like a slot-car track, but without the slot. Make it short in length and one-way approach, keeping the positive and negative correct. Make it fit between the wheels. Just drive over this on your track and charge the car quickly. Add more than one, and you got a race on. Battery free.
He brought two of the most famous engineers in youtube to his place to make a toy dragster
If its a toy or a big scale model it doesn't matter in engineering...in some practicals it is made in small models and the same ideas is used in big ones
Tom Stanton? More like Tom Edison. Trying to steal from Tesla like that.
Great video mate!
used to have a matchbox size toy car in the 1980s that was a quick charge capacitor dragster. This brought back memories.
Super capacitors are used in some cars, but only as a complement when quick charge/discharge is needed (energy recovery), not as a main traction battery. I worked on some application for airliners too (never put in production).
What an opportunity, two legends in one screen.
So now combine super capacitors with batteries where the caps take care of high draw and the batts running time.
CSIRO here in Australia developed that tech for deep cycle lead-acid batteries, intending to use it for electric cars. They were overtaken by the supremacy of Lithium batteries, AFAIK the idea never went past prototypes.
Or just use a transformer
a few years ago i used a helicopter tail gyro for steering on a car! it worked flawless!
I love that even though you prefer experimentation over calculation you still show us the equations.
I found your channel because Cody's Lab replied to one of your tweets. I am so happy! Amazing stuff!
“Trying to wreck it” - figuratively in the manner that my friends dog tries to wreck my leg at the summer picnic.
😉
You could get more stability and grip from adding a little weight out in front of your front wheels. This will greatly increase the moment of inertia about your power train and will give better control from your front wheels. Also, increasing your wheel base will increase turn stability as well
Making the chassis more close to the ground and adding a working suspension would help it keep more straight. If you added more powerful and heavier motors you could also add a wheelie bar(only if it was able to do wheelies).
Super Caps can be used with regular battary as compensator for short time high loads. F.e. if you have a havy car and you need to accelerate it fast then super caps are used but when you need to keep some speed battary is used.
batteries: 27min on, 1hour51min charge. ~%20 uptime
caps: 1min40sec on, 15sec charge. ~%87 uptime
seems like a good increase.
also does peter have a folding karambit as an every day carry?
So you could maybe do small charging strip's on highways to charge your caps while driving. And to extend range you have a regular batteries or even charge your batteries over time from the caps. But I don't know how efficient that would be
Codiac Using capacitors to charge a battery would be just buffering. Optimal efficiency would be to charge the battery directly. Capacitors are nice but their size to power makes them less practical and their cost is even more expensive than lithium batteries as they are now for less power.
DriveJapan I don’t understand the hype for supercapacitors as if they were invented yesterday or something.
amorag59 most people are not truly tech savvy, never herd of them, and it sounds like magic. Perfect recipe for flash popularity.
Most people can’t tell you the difference between the various types of capacitors. Let alone the benefits of each of them. Tell someone they block dc and pass ac any watch them try to process that. Or to add fuel to their confusion tell them that electrons don’t actually flow through a capacitor. I have had people who know a bit about electronics/electricity call me a liar because they couldn’t wrap their head around that.
Magic I tell you... magic!
@@drivejapan6293 Good point. As an EE I have the privledge of people smarter than me laying down the facts. But then again I see people with comments like "We could line our roads with charging coils to charge the caps as cars/buses go by" Lol yeah the same people so *eager* to fix your potholes is going to spend millions on that, suuuure. Lol doesn't take a tech sav to see that is ridiculous 😂.
2:38 .The smoke from those tyres... so satisfying
For a Rev 2 of this project, I think you should program a closed loop control into the steering to keep it straight. So, if you enter a steering command remotely, the steering control limits the desired set point in proportion to the speed.
1:44 This was a great video, but when you going ALL OUT on the sound effects made it into an AWESOME video!
i once put some supercaps in my tv remote, and it ran for several days without any sign of loosing charge
if you just did that at the factory, and had a charging port on the TV, you could eliminate one source of waste batteries from the world
Or wireless pc mice
Just make it chargesble via usb c
Do supercaps age? A small rechargeable battery might work just as well.
@@spankmygimp now i want to learn how to wire super capacitors on my mouse just for that, a 1 minute drop on a charging port giving you a few days of usage sounds great!
@@Mike-oz4cv
Yes. I think they get more charge/discharge cycles than a lithium cell, but you get less capacity so it sort of cancels out.
Been trying to do this for years, super caps totalling enough capacity to be practical are still way too expensive to replace batteries at the moment (and much to big vs storage capacity). Need another 10 years fro the price to drop and tech to advance...
How about a combo?
Scorpio then even more extremely bulky with even lower energy.
If you need capacity supercapacitors are not what you are looking for. Super capacitors are good at very high discharge rates and extremely fast recharge capability over thousands and thousands of cycles.
Isn't it just 27 times as many shown for the rc car?
Same goes with batteries. If you still need more than 10 minutes to fully charged your car and you can't bring spare batteries just like we could with gas, the tech is not mature enough, but here we are.
From my knowledge of racing wooden cars in boy scouts you have to have a weight in the back of the front axle to keep the front down, keep the car balanced, and also to make the car go faster downhill leading to the less cunsumption of power letting it last longer
I really love the fact that Tom makes so much by hand.
1:00 - aren't the tires backwards?
E: Yup, but you fixed it later.
E2: Also - why you didn't compare the relative costs of both the capacitors and batteries?
The super capacitor rocket was an awesome idea. I would buy one. I'd love to see more experiments....greater heights.
The little green car humping the dragster made me laugh so hard.
Tom, the toy RC car reminds me of another toy RC car called the Tomy Bit Char-G. I had one growing up and it took about 45 seconds to charge a very small NiCaD cell which then ran for about 2-4 minutes, depending on how rambunctious you were with it. Great video!
2:16 This is how baby Ford F150 Raptors are made.
Wait tom stanton and wiliam osman doing a collab. What a strange timeline.
they've done them before.
Not new.
Have you been under a rock?
They've done ones with the backyard scientist, Allen Penn, Tom Stanton, Ian (forgot his user), Nielred
@@Deelan1990 your well over the rock
Deelan1990 go learn spelling
The moment I watch one of his videos, my recommendations is almost entirely Tom Stanton.
I heard talk of installing a small super-capacitor in an EV, so that you could do a quick charge of, say, 30 or 40km if you needed to, eg if you ran out of charge in between stations and you were given a boost by a breakdown vehicle. Or also for use in acceleration and regeneration from the brakes, thereby preserving the life of the main Li-Ion battery.
To improve grip, do a "burn out" to warm up the tires which improves it. Running thicker tires also helps with stability and grip.
You could also heat the tires with heat blankets like in f1 or with other way
it's like a real dragster as it wheelies like a dragster
Since the caps get charged fast. Use both battery and capacitors. For normal low speed operation use the battery. Switch caps on for burst short high speed then recharge the caps with separate motor connected to the wheels shaft or small retractable turbine tube. Auto shut off is required when caps are fully charged to eliminate drag or power leakage.
Two tungsten weights at the front and the middle may have helped stability at the cost of some speed. You can find them where Pinewood Derby parts are sold.
peter and william appearing in other videos always result in significant quality drop xD
You, William, and Peter? Man, sounds like a bad ass time!
Wait until electroBOOM joins the party
I think capacitors would be best with brake regen.
Those caps can then be used as the first initial acceleration. Over time more power can be pulled from the battery as the caps drain.
This will stop the huge spike in power being taken from the battery.
Not only will this prolong the battery life, acceleration after regen could also be faster.
Super capacitors can be very useful as a buffer - batteries would charge them whenever used at less than certain percentage, for example less than 90% and SC's would power the motor whenever the battery usage would be above a certain percentage, like 99%.
WTF the intro xD
I'm actually more interested in how to make dragster more stable than in the super capacitors. I really like slow motion footage and more detail on what is mechanically going on when it starts to go wrong. Also anything on control theory is maybe a nice topic for you to give your videos even more depth which is hard to find in other YT videos of maker projects.
My guess is lower CoG would be the fix they'd need. Maybe some more weight in general.
@@LawrenceOakheart a bit late to answer that... But my guess is that it needs a diferential in order to give similar power inputs to the wheels even if one loses traction
Then the added weight and lower CoG would make it even more stable
having two motors, one for each wheel is always a challenge
I'm a 2x National RC Car Champ. There are several things we can do to drastically improve the performance of this car. We can drastically reduce the turning radius and center the steering with the radio. Also, we always CA glue our tires to the wheels. Please reach out to me on here if you'd like to follow up on this topic!
I had an idea. Use 3 stages of batteries. Stage one has high capacity, but low charge/discharge rates, stage two mid-line in capacity and charge/discharge rates, and stage three is low capacity but high charge/discharge rates. Stage one trickle-charges the other two stages and is intended for endurance, long range, and cruise driving. Stage two is a charge buffer (like for regenerative braking) for stage one but also powers low acceleration, and also contributes to charging stage three. Stage three is also a regenerative braking buffer, but is primarily used for powering rapid acceleration.
were camber, castor, and toe angle considerations made when designing the drag racer? if not, this might be the cause of instability
Other factors:
Was that wing designed correctly? (and would it matter at the kinds of speeds of an RC car?)
@@KuraIthys
At that speed, I'd guess it's just weight.
It seemed okayish until they tried to turn it. Have you ever seen a dragstrip with a turn?
Seemed to crash when you let go of the accelerator.
Maybe gear down the steering for a much larger turning circle?
"It's really hard to steer at high speed... ", man it has a dragster design anyway....
I really like and approve your enthusiasm for capacitors.
it stands up like a real drag car should. I'd suggest adhesive to the tires, it'll help with your traction issues.
Real life electric drag racing is one of the few things I look forward to in the future
There is something similar, where robots are programed to push other robots off the platform where speed is welcomed.
Ryan M. Imagine standing next to a top fuel with electrons and silence thumping your body and making your eyes burn and cry?
Yeah nah
@@mmazz30 I'll believe "electric dragster" when I see it. That's nearly 7.5 MEGAWatts of equivalent power lol. I'd like to see them make that power at dragster weight.
@@amorag59
Yeah. Normal car, normal fuel... Electric (or hybrid) will win. But drag cars aren't exactly normal, and petrol has a much better energy density than any battery for the moment.
@@amorag59 You DO realise that the while it's not purpose-built dragsters, that Teslas have been beating petrol cars in drag races for ages, right? It's the one form of racing they unambiguously have an advantage in.
The performance package equipped model S can do 0 to 60 mph (~0-100 km/h) in 2.28 seconds, which very few internal combustion vehicles can match even if they're purpose built racers.
Then there's this monster, which has been with us for a LONG time already:
www.geek.com/geek-cetera/worlds-fastest-electric-car-is-a-1972-datsun-can-do-0-60-in-1-8-seconds-1416865/
Yes, that's a Datsun. Doing 0-60 in 1.8 seconds.
Electric cars have a HUGE advantage in acceleration from a standing start.
And I'd like to point out that an electric motor that can hit that kind of power output isn't very heavy, relatively speaking.
The traction motors powering something like the german ICE-1, produce a combined total of 9,600 kw SUSTAINED output. (peak output for short periods can easily hit at least double that, if not more.)
That's used to get an 800 tonne train up to 250-280 km/h
And it does that using 8 traction motors... Thus each motor is built for sustained output if 1.25 megawatts.
Given these motors are mounted between the wheels, which means they have to be compact and fairly light (unsprung weight is a major problem for high speed trains. The train as a whole can be heavy, but the bogies cannot.).
Getting an electric motor into the multi-megawatt power output at relatively small sizes and weights isn't much of an accomplishment.
Powering it off a battery however is quite a problem. Though a drag race only lasts a few seconds...
The main issue is the current draw.
The reason Teslas can win drag races but not longer races is because the battery management system can cope with extremely high current draws for a few minutes, but cannot sustain that output over a long period.
In terms of acceleration from a standing start, an electric powertrain built for that purpose will easily leave all but the most carefully designed petrol vehicles in the dust.
It's not even remotely a fair fight IF you can sort out the power supply issues...
(battery current draw limitations. One of the reasons why supercapacitors hold an appeal in this context even though they'd suck for a road-going electric car.)
The motors can handle it. Easily.
The battery systems are where you hit a design limitation.
Hey Tom,
Your projects are amazing and you are a creative guy.
As this video points out some advantages and disadvantages of batteries. Maybe you could come up with a optimal combination of both types of batteries? 🧐 As capasitors could power an engine with high consumption and maybe then be charged with lithium batteries?
Just a thought. 😊
this supercap dragster can match the 1/4 scale dragster racing
That car is seriously overpowered. I like that! Well done! You might try 40% larger wheels all around, and space the front wheels twice as wide as they are now.
imagine it did a wheelie
Although not mentioned, one of the big pluses with capacitors over batteries is the instantaneous availability of the power. Batteries have a limit on how fast they can drain. Capacitors can deliver their power nearly instantly which while horrible for duration, means they have an amazing amount of power available instantly.
BTW, a dragster like that is not meant to turn. It is a straight line racer. You effectively demonstrated the reason why you don't see funny cars on the circle track.
Deadly virus: exists
Tom Stanton: I'm gonna travel the world!
I think he filmed this a while back but yeah
He filmed this last year
he's not 80 yo, so, no problem.
@@emanuelgoncalvessantos4499
- there are 16 year olds who have died from this virus (without having any known preexisting conditions)
- a large percentage of people who get hospitalized and need intensive care are below 40 years old. They are very likely to get through as long as they get the neccessary treatment, but with more and more cases the healthcare system gets overloaded and not everybody who needs treatment can actually get it.
- even if you don't show any sympthoms you can still spread the virus and kill other people with it
So if you think this is no big deal just because you are under 80: think again. People who share this mentality are one of the reasons why this pandemic has gotten so bad out of control.
@@emanuelgoncalvessantos4499 You are part of the issue.
That intro was fake right?
I don't own a Tesla, but the LED ring around the plug goes green when charging, blue when not. Also they lock in place, to stop exactly what Tom did. At 0:08, you can see the ring is blue, it had finished charging :)
He's enough socially introverted that I'd believe it was legit. Same as me 🤪
He definitlely asked the owner beforehand, his window was already opened
Not sure if this has been brought up, but if you look at the charge time between the small RC cars supplied battery on the faster charger and Super capacitors you get a much longer run time for the same amount of charge time from the SC's. That is only increased by the original charger taking almost 2 hours to charge.
One improvement you could do is add some sort of dimmer. Like how an ecu controls how much power is put to the wheels of a dragster. Lower at launch to reduce spin
caps should be used in regenerative braking and starting up everything
and everything else on battery.
so a hybrid solution could be interesting here.
I'm going to start a car company and steal your idea
Elon musk wants to know your location
Tailslol they already are in multiple applications. Like the dodge eTorque
hybrids are the only way electric cars are truly feasible as sports/heavy load vehicles
Why do we need to use caps for regen and not just the Li battery? There are considerable drawbacks with supercaps: The energy density spec tells us a Li battery will usually be smaller in size, you won't find too many with high Farad rating AND high voltage tolerance, we don't want more complication with parallel/series orientations requiring balancing electronics. Caps also leak so "starting up everything", most likely won't be an option after sitting for a while.
Front and rear wing required for more grip.
That will do the job!
F1 cars
Supercapacitors also can be charged and discharged way more times than Lithium Ion. Also you can discharge to 0v without damaging them so work well with voltage regulators to get most of the available energy out of them.
by VR do you mean a buck-boost converter? a conventional VR does not help
@@kennmossman8701 Yep.. buck-boost.
You should add a mosfet, and then supercharge the capacitors with a 40v batter while in series, then transfer to parallel, then take a brushless motor with high input on the car
3:56 -- Question for clarification! Your explanation of the wonderful question Peter asked you is great; I like maths. But hey, why the 7200 as a divisor? 2 x 1 hour (ie. 3600 seconds)?
OH wait, I think I get it! 2 x Time (1 hour) because the (V^2 x Farads) is divided by 2?
SEE ALSO: en.wikipedia.org/wiki/Farad
F = Watts x Seconds (and that's a dot product) divided by Voltage^2 ...
The equation for the capacitor energy in J is (capacitance x voltage^2)/2. So to convert it to Wh, it must be divided by 3600. So yes, the 7200 is just 3600x2
@@TomStantonEngineering This is correct, but only if you discharge them completely to 0 V. With most electronics that is not possible, so strictly speaking you would need to do the integration with the charge voltage as upper limit and cutoff voltage as lower limit. Because of that the usable energy is even lower with the caps.
With batteries these simple calculations work way better, because the voltage is almost constant and the result will be pretty close without taking the discharge curve into account.
@@TomStantonEngineering Power equals energy consumption over time, P=E/t, i.e. the power is the rate of energy consumption in a given amount of time.
Energy in a capacitor equals (C*U^2)/2. So how dividing the energy in a capacitor with time gives you the Wh, when the formula from the first row of my comment and in general says that P=E/t? Dividing the energy accumulated in the cap with time gives you the power that your capacitor can reach. It gives you the power that you are able to sustain/reach/develop using that particular capacitor. So, ((C*U^2)/2)/3600 gives you the power you are able to reach for every given second using that particular capacitor. Wh and J are equivalent, interchangeable. In fact, Wh are Joules and Joules are Wh. You can't divide Joules with time and say you've got Wh, because you don't have Wh, you have W. Deducing from P=E/t using measurement units, we get that 1W=1J/1s, meaning that 1 Watt equals to using one Joule of energy in one second. So, 1 Ws equals 1 Joule, one Ws is 1 Joule, 1 Joule is 1 Ws. You can't divide the Joule with time and say that it's a Wh or Ws. It's not Wh, not Ws, but it's W. So (3^2*50)/2 gives 225 Joules of energy. If you use 225 Joules of energy for the following hour you are getting power of max 0.0625 W every single second.
@@zrnjan You are so close to understanding why/how the 3600 is used, that I thought I can help you the last bit.
In short, it is simply a conversion. A factor without a unit.
Tom Stanton says in his reply that the initial formula is for energy of a capacitor puts out an answer in Joules. And the 3600 is used to convert the result from Joules to Wh. As you state yourself 1 J = 1 W * s.
And there is 3600 s per hour.
Therefore the answer in W * s needs to be divided by 3600 to have the answer in Wh.
Another take on it. If you have 1 J, you have 1 W * s. But not 1 Wh. You have 1/3600 Wh = 0,00027778 Wh.
The factor converts the number by a factor that fits to the conversion of units.
Lastly way I can formulate it.
If you have a light bulb using 60 W of power, and you let it run for 1 hour. It has used 60 Wh of energy.
You end off your answer by saying that the Capacitor will output 0,0625 W every second for 1 hour. Then we can conclude that it have delivered 0,0625 Wh.
Hope my (long) answer makes sense and helps you :)
That was a little disappointing. I was expecting to see the supercaps dump their energy into the motor quickly for some ridiculous dragster action. Larger supercaps can easily discharge at 1000A. Of course you'll need an ESC, motor and wire to handle the current.
Dragsters have friction clutches that clamp at certain hours power ranges. It similar to regulating current over distance to keep them at max power, torque. The clutches literally friction weld at different power ranges over the power curve of the 10000 BHP engines.
There is a reason that drag tracks are straight, you don’t turn. At the end of the track you are given room to slow down and then the car is usually loaded onto a trailer to transport wherever it needs to go.
I mean, I've never played with such RC toys for more than 2-3 minutes at once. Fast charging with supercapacitor could actually be better for users like me.
Loved the bit at the beginning 👌 so funny. Reminded me of some kind of old top gear skit
Ohhh.. Clicks random intresting video - a wild Peter Sripol appers! Smaller capacitator packs are allready used in RC racing, to cover for the BEC when you draw high amps from the ESC. Sometimes the voltage drops below 6 volts and that would shut down the reciver.
This is pretty cool!
2:15 The green car is in love with the red one.
Oh no
It's the conception of anarcho-communism
Tom, I think, that to make a correct compaction, you should add weight to the RC-car with supercaps, to be equal with li-ion.
4:54 Peter Scripol in the Background saying good job noob hahhahahahba
Capacitors have a higher power density, lithium batteries have a higher energy density.
1:19 RIP lithium battery