Vacuum Dragster

[@Calthecool]

And just like a real dragster, it goes slower at higher altitudes.

[@someweeb3650]

Unless the forced induction is capable of more boost than the wastegate is tuned at, in which case you can go decently high up and not change engine power. Of course, you might still have different times, since drag cars still need a bit of downforce.

[@xcr8ivex708]

*mercedes le man's flash jack intensify*

[@daviskaufman3168]

Some Weeb what wastegate? they are supercharged, don’t have wastegates and they are controlled by the size of the belt “sprocket”. which controls the boost

[@wyattcamacho7464]

@@daviskaufman3168 theres some turbos that use waste gates, perhaps most top fuel dragsters use waste grates with their turbos.

[@daviskaufman3168]

Wyatt Camacho top fuels use super chargers

[@Nighthawkinlight]

Super cool idea. Neat thing about this is that the force is practically constant over the whole pull if you have a good vacuum, unlike springs which get weaker as their energy releases.

[@abdulbasit9925]

kzbin.info/www/bejne/qpbCgHqsa7aYiLM

[@sihemkawtar8151]

I think vacuum and springs are the same cuz when the distance x decreases in spring same as presure in vacuum increase and also the differece between air and vacuum pressure decrease ..

[@lukekolodziej9631]

correct you are

[@ipodhty]

@@sihemkawtar8151 what? The point is with a very good seal the vacuum inside should stay almost constant the whole way, so the amount of pressure on it would the the same the entire time

[@shredBucketheadshred]

@@ipodhty but this isn't the case, the pressure and force tapers, it can be felt as you pull on the plunger as it gets harder the further to pull it, if what you propose was the case compression ratio in combustion engines wouldn't effect power produced

[@NicholasRehm]

If there's ever a syringe shortage we know who to blame

[@jamlessdoughnut]

Nicholas Rehm hopefully a COVID vaccination

[@thechumpsbeendumped.7797]

James Roberts Beat me to it.

[@sleeptyper]

If there's ever a syringe shortage we know where to get them from.

[@petehoare8235]

Especially as they are single use only, he must have used hundreds

[@peter_smyth]

@@petehoare8235 They're single use only in a medical or biological context for sterility, but the plastic is sturdy enough to use many times over.

[@JoelCreates]

Things that are syringe-powered are rarely this wholesome

[@cooperthompson4850]

Lol

[@oiltoast3723]

A drug addicts favourite toy.

[@ShushKabab]

Why hello there

[@yaboidustin2447]

@@oiltoast3723 lmao

[@brain8690]

@@ShushKabab general kenobi

[@VFRExplorer]

Nice concept and lovely design. Perhaps a vacuum powered glider next?

[@joeydr1497]

VFR Explorer that’d be cool

[@theorangebaron1595]

Yes, I agree

[@trfpvVT]

that would be awesome. connect driveshaft to a prop instead of wheels.

[@SwordFreakPower]

What is a 'powered' glider? I thought the point of gliders was no power

[@avroskroksthestarfish4495]

@@SwordFreakPower a powered glider uses some kind of propulsion to gain altitude, then turns off the engine and glides.

[@MisterItchy]

2:28 The ants are like, "HEY, I'm walkin' here!"

[@cerebralm]

"an ant has no quarrel with a 3D printed, syringe-powered toy dragster" or something like that god if there are higher powers out there we're so fucked lmao

[@scottdotjazzman]

LOL I understood that reference!

[@JC-XL]

No ants were harmed in the making of this video ...

[@MisterItchy]

@@JC-XL That was actually going to be my comment before I thought of the other one.

[@iwantitpaintedblack]

thats what cousin nicky said :D

[@davedonovan2681]

i hope you get a contract to make a line of kid's science toys someday. you're the man.

[@revimfadli4666]

Hopefully his partnership wih Kiwico goes further that they have a Tom-designed edition

[@ameunier41]

That's a really good idea, the dragster is already designed and could be easily manufactured.

[@mostcoolkid78]

i woudl buy it

[@juraijkazi2922]

Agree

[@frederikc_]

maybe not use something that looks like a syringe

[@tigershark2328]

3:30 Bin Dude is awesome! Didn't have to stop the car nose-diving off the patio but he did!

[@charlie_lee_rhee8866]

TBH your syringe powered vehicles would be a great STEM project for schools.

[@tin2001]

Replacement for the old mouse trap driven CD cars now that kids don't know what those shiny circle things are?

[@revimfadli4666]

@@tin2001 aren't CDs for efficiency/distance/endurance-type races?

[@JeromeDemers]

@3:33 I though your dad was doing to throw it in the garbage because of lack of grip and stability!

[@bradley3549]

He's gotta be thinking "Aren't you a little old to be playing with toy cars?!" lol

[@JamesMonkeyL_13]

Don’t need an @

[@Driesipops]

I love how simple his title is but how all the info is in there

[@Tomwesstein]

I think it sucks

[@zakkymiftahurrahman1665]

@@Tomwesstein did you just....

[@joachimtheboss5326]

Syringe: For single use only Tom: *i dont think so*

[@dozer1642]

This is nothing new. I’ve watched some folks under the overpass that seem to be powered by syringes for years.

[@dozer1642]

Value Value too bad you spent your school years under the overpass instead of learning how to form coherent sentences.

[@saab35draken39]

Nice

[@CosRacecar]

That's a different kind of drag racing

[@mt7680]

@@dozer1642 god damn

[@Aprox56800]

drug racing

[@robertsteel3563]

3:32 I like how your (Roommate/Parent/Sibling/Friend?), is taking the bin out (or in) and saw the dragster and grabbed it before it gone off the edge lol

[@romyaz1713]

i'd like to develop your final observation a little bit. it is actually YOUR energy that is moving the car forward. the atmosphere plays the role of a battery that stores it. when you arm the piston, you put energy into air by moving some of it's mass a little bit higher. and then the air pushes back on the piston to move the car. it's still mind boggling of course

[@miguelbigott9327]

Great observation! It’s that same when you pull back a spring. Your energy is what gave the spring its elastic potential energy, which it can later be released.

[@PowerScissor]

I guess it was actually the food he ate the day before....no wait, the sun that powered the foods growth...nevermind the large explosion that eventually formed into the Sun I suppose.

[@romyaz1713]

​@@PowerScissor I suppose you are spot on, but there is only one thing still troubling all the philosophers: whether his conscious decision to arm the piston of the car was also predetermined by big bang or is it something else

[@thescubersteve5214]

You need some rubber on those front wheels to absorb some of the impacts and keep you steering straighter. Cool project though 👍

[@Santibag]

4:20 Wrong mass. It should've been 90kg to be shooted over 300m distance. It is what the superior siege machine Trebuchet would do, which is also a good teacher of mechanical advantage.

[@charleslambert3368]

I had a model trebuchet kit once. Art shops sometimes have them. Just keep the counterweight empty when its not in use. Mine was full of coins for years and it broke the axle.

[@andrewesther4705]

Syringe powered trebuchet? Sign me up.

[@6ixmil217]

Funi number

[@dougerrohmer]

When I was an apprentice, we found that if you spin a bearing up with a compressor air gun, it makes a satisfying screamlike whine. When you dropped the bearing onto the lino floor, it would wheel spin in situ for a while and then accelerate at mean speed. So we built dragsters around bearings using thin copper pipe, and found that if you wrap the bearings in heat shrunk sleeving (you had to balance the wheel), you had a tire and the dragster instantly shot off and disintegrated against the workshop wall. Great fun!

[@tomatwalden]

"Math"... oh dear Tom, playing to your US audience!? "Maths" in the Queen's English if you please! 😂😂😂

[@Case16710]

Looks like the 2-syringe car is slightly lifting the front wheels when it starts accelerating. That’s allowing it to veer off course. When the rate of acceleration slows down and weight transfers forward again, it seems to run pretty straight. Making the car longer would reduce the longitudinal weight transfer and make it more stable. That’s why top fuel dragsters are so long. Perhaps try placing the syringes inline or just having a long chassis?

[@bikeforprotv7184]

Great video! In the future, I would appreciate longer videos with more of your trials and errors during the projects. It is exciting to see you solve upcoming problems like you did in the air engine series :)

[@DeuceClubs]

Tom Stanton: Here's another obscure way to move! Me: I understood nothing, yet I am still entertained.

[@nuttydiger]

Hi Tom, I'll be starting Uni in september studying Mech Engineering. Any tips/advice for me? How important is it to do individual projects like you do on your channel? How did you learn how to build the projects on your channel? Was it independent initiative or mostly skills taught by your course? Thanks!

[@viniciusfriasaleite8016]

I recently (this year) started a engineering course and think that one of the best ways to learn is through projects. I'm now part of a team that develops robots for competitions, and the most things I learned till now were with the other guys from the team and research related to that

[@nuttydiger]

@@viniciusfriasaleite8016 Yeah my University runs a Formula Student team which seems interesting to me just a bit intimidated I suppose, like I doubt I'd have much to offer lol.

[@viniciusfriasaleite8016]

@@nuttydiger Mine does too, but in my opinion a formula car can't be made in the university so the team pretty much buys the pieces and assemble the car. I work on a line follower robot, so there is more things to really think of and make. But I'm sure that you will have a good experience with both

[@nanglo6817]

As a nearly graduated Mech Engg student, I learned a lot from projects outside of my classes, whether individually, with a few friends, or with multidisciplinary clubs. My experience working by myself and with Engg students outside of Mech really helped me professionally; generally speaking, the people I knew that did side projects were the ones that got the cool design-oriented internships. I would also say only 20% of the classes were hands on, and it's up to you to apply a lot of the stuff. Also joining clubs and doing competitions is a great way to make friends and/or professional connections.

[@tristanhanley8741]

@@nuttydiger I'm a sophomore mechanical student... I would agree with Vincius on the Formula car being often a lot of bought parts, but not always and that doesn't mean you can't make your own testing equipment, steering, suspension, or any part you want to make. I am the Suspension design lead for the Baja team at my school and though we buy our shocks, the placement, geometry, style and everything else is up to us to design and manufacture. All the SAE teams still have to manufacture as much as possible. I've learned the most by far in the team over classes, but both are extremely useful. Be patient and get involved is the advice all the seniors gave me last year.

[@TallmanBradGameplay]

2:27 great example of 3D binaural audio. As the car goes behind the camera, using headphones to listen, the sound travels behind your head. Completely unrelated but one of the best examples of 3D audio I've ever heard.

[@yitzimarks6336]

Next video: Mouse trap powered dragster

[@natevplas]

I made one of those when I was a kid! Didn't have any gears to increase speed, though, just directly wound around the axle.

[@mrsmith4662]

Great idea! Tom, you need to market this as a toy, possibly calling it an Eco dragster, as it runs on nothing more than the power of the air! (it could be the 'must have' this Christmas). Love these projects.

[@FREENAMEFTW]

It, really runs on the "power of human metabolism" though.

[@mrsmith4662]

@@FREENAMEFTW Yes, you're right really, but that wouldn't sell it as 'Eco'!

[@FREENAMEFTW]

​@@mrsmith4662 I sure think it could, but it would depend on the diet of the user

[@denbecr49]

@@FREENAMEFTW If you start over, it really runs on gravity, then metabolism (chemical energy) with photosynthesis before that. A further step back it's nuclear fusion. I assume before fusion it's ultimately the big bang. Did we miss anything?

[@Kombivar]

Blindly guessing - It's awesome!

[@Kombivar]

I'm never disappointed watching new Toms episode :D

[@McShavey]

Tom, you really know what you're doing. I'm glad I found a builder/engineering channel that isn't just some guy slapping together random shit and seeing what works. This is excellent. Thanks.

[@Epic_DaVinci]

Video content was top quality as usual but 20% of it was and AD. it would be nice to see some longer form videos.

[@morganlaye8359]

RIP that ant that got runover at 2:28 😭

[@Builditathome-Restoration]

Awesome project tom! Your good inspiration for me. Started youtube. I start with my engenering school in 1 week cant wait😃😃

[@ASRocketry]

I’m 12 and already got my 1st 3D printer about 8 months ago at Christmas, I’m probably going to do projects like these soon on my channel, I wish I could go to an engineering school

[@tsd560ti6]

@@ASRocketry Just continue being curious and doing projects, you might be able to attend an engineering school in a couple of years! I always loved cars and technology and worked on little projects with friends in school. Now, being 20 years old, I am in my 3rd year of studying Mechanical Engineering and still love it. -It is definetely worth the effort spent on math exercises. Fingers crossed, you'll make it! ;)

[@robertjames9191]

Hi Tom did the physics calculations. So for two syringe car Radius of the circle where the string raps around is 4.75 mm. The big gear wheel has a radius of 23.4375mm and the small gear wheel has a Radius of 4.6875mm. Also I got 77.92 Newton's for the force on the syringe comming back. The work of the whole system (2syringe car) is 20.2592 joules. Will work out power later

[@NoobGaming-cy6zd]

Dang that car went faster than my last relationship

[@DarkSwordRagnarok]

"I think it needs more power." You had the same idea as the oldschool drag racers, when one engine isn't enough, strap a second one on there! Tommy Ivo would be proud.

[@TechsScience]

In fact you made a car which runs with nothing I mean vaccum

[@Lykoloo]

The vacuum is doing nothing, it is the atmosphere that is forcing the piston to move.

[@theinventor2866]

Well, yes but actually no. Remember conservation of energy? He had to pull the plunger first, thus storing the energy, like a battery.

[@haddow777]

To help with the stability, maybe you could create an upside down wing system under the car, so that the faster it goes the more suction it creates underneath so the wheels maintain traction. I did a similar thing in school when we made CO2 cars and it was the only one that stayed in the ground to win. Most other would pick up and they fly off in random directions.

[@ulwur]

I miss the designing & engineering parts you usually have in your videos.

[@abdulbasit9925]

kzbin.info/www/bejne/qpbCgHqsa7aYiLM

[@ibrahimqureshi2420]

bro......

[@George27484]

Acceleration and top speed increase when the car uses tires with more grip. Is a good idea cut two baloons and put some rubber in the rear wheels

[@TechGorilla1987]

I couldn't click a happy video fast enough!!!

[@ivanf4023]

Some of the earliest power seats in cars were vacuum powered (e.g. an internal combustion engine is mostly an air pump but with this air pump it creates low pressure areas inside the intake manifold or crankcase depending on the engine). Other things controlled by vacuum include the pop-up headlights of the C3 Corvette, HVAC controls like temperature blend doors and air flow doors were vacuum powered, adjustable engine timing was done with engine vacuum. It's not as exciting as a dragster but now that electrical doo-dads are cheaper and more efficient (mostly cheaper) you don't find nearly as many vacuum hoses in an engine bay as you used to. In fact some 80s cars had a tin can under the hood with a single line going into it. That was a "vacuum reservoir" so you could still work your vac accessories for a bit if the engine stopped.

[@doopfdeckel]

Nice Now scale it up! :)

[@woshigepro2]

IF you make a pressurized syringe spring instead of the vacuum one, you can make the string coil on a tapered shaft to produce almost constant torque on the wheel. IT is like a CVT in car.

[@mark675]

Strange, I wondered today when we were gonna see a new video from you, two hours later its up.. 😂👌😎

[@court2379]

The problem with vacuum power is that you are limited to 1atm, where as a pressure tank can be many atmospheres. Also the external pressure caused by the vacuum inside, makes the syringe want to buckle and collapse, while a higher internal pressure keeps it ridgid. One advantage of the vacuum is that the force is relatively constant along the syringe travel. Great work on the car though. For it needs to do the design is great.

[@orestis6804]

2:40 nice rpf1's lol

[@bruhmoment802]

Looks more like BBS wheels

[@saxplayingcompnerd]

Engines often run the crank case under moderate to high vacuum to archive higher HP and efficiency numbers due to the vacuum helping pull on the pistons .

[@peetiegonzalez1845]

you used it more than once. I'm calling the police.

[@shad4101]

darn it, now i cant say that

[@hlidskjalf3050]

Next up you need to make mini beadlock tires to get low psi. Low psi=more surface area=grip. just look at how much top fuel dragsters tires compress on launch.

[@chauhanravi5664]

Love from india

[@SuperSocks7]

i like drag race electric rc cars and an eady way to get more grip is to use foam wheels, they dont last as long but are extremely grippy, prehaps messing around with the size of the wheels to make them larger could help, i would normally suggest a fullyfunctioning rear wing but i dont recon this would be getting fast enough for that to matter.

[@AnaSilva-lx8zt]

Tip. a good way to check for air leaks is with soap and water. Get one with water and washing up liquid mixture and then apply it to the joints and if you see bubbles it is because you have a leak.

[@jakk222]

Here’s an Idea to possibly help with traction, try and deflate the tires as much as possible. Dragsters can run as little as 6 psi, so under 1 psi could work. Another idea would be to lay down rubber before the run.

[@mannythehunter]

Small RC receiver and you would have the ability to keep the dragster on the track! Neat build, never thought of using a vacuum to power something.

[@DesignCell]

Consider the last bit of the syringe pull cable having a slightly larger shaft radius for increased initial torque.

[@hamjudo]

I can think of a couple ways to build that out of frictionless ideal materials. I am not sure how to make something that would work in the real world, that could be wound by hand, and would be easy to make.

[@TheCloudhopper]

Ok you got me. When i read the title i thought you build one using the motor from a vacuum cleaner. I totally forgot that this is proper Tom Stanton video. Expect the unexpected engineering solution, I love it :-)

[@superdupergrover9857]

It looks like it's impractical with your rear axle design, but try to put as much weight as possible to the rear of the dragster, like putting the transmission behind the rear axle. Ideally the dragster should be on the razor's edge of flipping over. Occasionally it is even beneficial to add dead weight to the back, but this is rare and basically only happens with American pickups, which are very front heavy but rear wheel drive.

[@grahammcnally4799]

Grasshoppers. Power a car with grasshoppers, and then film it on a fly powered drone. You rock Tom. Keep seeking the next new power source. The best part of this comment is you are already thinking, well how would that work?

[@Rs-fg1rz]

you gotta reduce (if possible) the tires' air pressure, Dragsters also use that to increase its launch grip. making it hot already is only good when its a circuit race. but it will still help the grip.

[@hwilkes2048]

Hey Tom, you should use a vacuum chamber on your bike instead of the flywheel. You can convert the kinetic energy of the bike to the vacuum chamber by pulling the piston out. And then later accelerate again by letting the piston go back in. The pressure difference will always be 1bar and thus giving a constant acceleration/deceleration.

[@MazeFrame]

Those vacuum cars look like a fun time sink. Time to figure out how to make one from plywood!

[@goliathprojects7354]

"FOR SINGLE USE" Just like a real dragster

[@bxeagle3932]

3:40 The Dragster has chosen grass instead of death

[@secondengineer9814]

2:38 "All it needs now is a rear wing to complete the dragster look" By that you mean, All it needs now is a totally functional rear wing so it can go faster, it's not just for looks, guys.

[@RX-0_FPV]

Take the foam out of the tire and it will help with forward traction.

[@daineramosquitco5816]

Now the battle begins: Tom Stanton's Supercapacitor dragster vs. Vaccum dragster

[@sparklygames71]

3:41 mustang owners when they see a crowd

[@mikemat3336]

You could totally add a conical pulley to where the string wraps and get a makeshift CVT transmission. Maybe play with the profile to get different acceleration curves, would be a neat part to show off the 3d printing too

[@lukesky36]

2 stage syringe put a spring inside of it so one direction runs off vac compresses the spring loose the vac and then the spring will move it out. No idea if it would be more efficient but might be worth testing?

[@donshin6717]

The syringe piston seems to be sliding at unsteady rate, the rubber seals needs some lubrication. Would recommend 20wt+ oil for the syringe rubber seals.

[@OptimusSubPr1me]

Add an eyelet hook or two on the underside and some fishing line between two locations to help it drive straight.

[@DeGodOfTime]

3:57 I have the crane, robot, animator, color prism, water wheel, turntable maze, marble machine, mechanical bird conveyor belt, refraction projector (phantom projector) air cannon, spin-art machine, some sort of mini trapeze launcher, yeah I have all that from Kiwi co.

[@darth_vader_1574]

0:15 yeh its not pushed down but the forces aren’t actually exactly the same. It’s actually pushed up because the force on the bottom is just slightly greater than the force on the top (buoyant force)

[@tjejojyj]

Excellent. I hope KiwiCo makes a box out of this project. More interesting than a compressed air powered car because the source of the power isn’t as obvious.

[@tractorman7733]

I love how that v2 had so much power it was literally bending the frame as it accelerated lmao

[@melom8276]

give it tractor wheels in the front (small tyres angled inwards so that it will always drive in a straight line when not steered)

[@lvlndco]

Maybe need softer tires so they have a little more give and grip to stop the hopping?

[@infernalGotYou]

The thumbnails with those red and blue plastics always bring joy, knowing it’ll be a Tom Stanton video

[@RockSolitude]

Now I want to see a full-sized vacuum-powered dragster do the quarter mile

[@TheWorstBridger]

You could increase the acceleration by allowing for a higher torque and using the syringe to suck the car to the floor

[@SimpleElectronics]

You can try a solvent on the rubber of the tires to make them softer - there is some specialty stuff specifically for RC cars but you can use something like WD40 if it's more available! Happy dragstering!

[@mrpengywinz123]

Tom, have you ever considered attempting a vacuum balloon? By evacuating the air from a lightweight chamber (either a thin, rigid sphere/polyhedra of thin rigid bricks, or a strong vacuum bag supported by a rigid wireframe+chordal braces inside), the average density of the whole chamber can be made less than the density of air, and so it will float

[@55Ramius]

When I first saw the thumbnail and it said Vacuum Dragster ,I thought you were using a vacuum cleaner motor to power it. This was impressive with the syringe.

[@Fleato]

Even though this isn't exactly like the craziest thing you have built. This might be one of the cooler. Simple and awesome

[@Demongornot]

DUDE ! You just gave me a totally crazy idea... Hear me out : Taking an helium balloon made for high altitude flight and attaching to it a special air tank filled with air at sea level pressure, so 1ATM. The balloon rise up, then, when it reach a certain altitude, using a barometer to trigger it, the air tank is being opened, the difference of pressure caused by the atmosphere translate into enough power to be used, in this case, it will be used to use a mechanical retraction system that will cause a part of the balloon to get back inside a "storage tube", making less available volume for the same amount of gas, meaning more density, enough so the balloon start to descent. Once back down, the balloon is retrieved and the air tank that contain a near vacuum is used to make power, the "stored" part of the balloon is simply released and the cycle repeat ! With a large enough balloon and air tank, we can also use capacitors and tiny energy generators to store just enough energy to actuate a really simple and low power electronic guidance system and moving control surfaces for steering the descent, with a big physical funnel to make it not require to aim at an ultra precise spot, it can be automated. And if it is automated, it literally is a free energy device 🤣

[@Casey_Schmidt]

I think a better way to use a dual syringe setup would be to give each syringe a different ration to the rear axle. That way, one syringe can sent high torque off-the-line while the other one will run for longer; sort of a booster and sustainer method like a rocket. What do you think?

[@GeomancerHT]

Claps for the best way to show an sponsor ad and still avoid being anoying. Thanks for the video!!

[@iandrake4683]

I think your air pressure driven projects are always my favorites. Very cool!

[@jessemellon6258]

Yes ! Lets see a vacuum powered glider with a small battery for a servo and a reciever ! Sounds very doable for tom stanton !

[@AsymptoteInverse]

Here's my personal favorite way of comprehending just how much pressure the atmosphere exerts. At sea level, the air pressure is equivalent to the weight of a 1.033 kilogram mass resting on one square centimeter. A steel bar (common mild steel, density 7.850 grams per cubic centimeter) with a cross-sectional area of 1 square centimeter and a mass of 1.033 kilograms would be 1.316 meters long. If an average-height human male rested that on his toe, it'd reach to his chest. It would also really hurt.

[@macrumpton]

How would the dragster do racing against a syringe rocket on wheels? Could you add spikes to the wheels of the dragster to get better grip on the concrete. Could a Vertical stabilizer help the dragster stay on track? What if the dragster was pulled along a wire like a landbound tramway? Sooo many questions!!!

[@karyjas1]

Once before you built an engine run by pressurized air. That was the series that made me subscribe. I wonder, how different would an engine run by vacuum be?

[@plepizify]

Use the spoiler for down force like on a real dragster ist will improve grip and burn out at the wheels

[@thecommenter578]

You are becoming a scientific toy designer. A good thing actually, we need more science based toys

[@igorz3551]

Yeah imagine seeing kids with these... The kids would be so interested in these stuff even their parents would be fascinated.. sad thing for me i never got this type of stuff though i was pretty smart in school but teachers were more socialized than academically interactive... I really want to show these videos and things like this to my nephews and my sister so they could be more excited in paying attention and learning new things so they won't be limited in knowledge :/

[@rccrazer]

Add some weight about 1/5 the way in front of the rear axle, this will help with your traction issue. Automotive wheel balancing weights and fishing weights may be good options for simple lead to find, something more specialized would be pinewood derby tungsten weights. Its one of the most dense materials you can get without it being radioactive. Tire sauce is also something on-road rc racers have used for years along with thinning the sidewalls of the tires on the inside. Please try to keep going with the atmosphere powered vehicles, id like to see some progression in your dragster and perhaps an aircraft?

[@Hollis_1101]

Should of put a little weight on the rear of the V-2 car. Was a trick used on old Ford Capri’s so they could be driven harder/faster with more stability

[@dominicrichardson5546]

I love the vacuum related videos on the channel, they're definitely the most interesting and unpredictable

[@joepie221]

Nicely done. Reminds me of the 'Mouse Trap' cars our local high school used to compete with. Free energy is all around us. New sub here. Stay well.

[@r0gu3_d4unk5]

You should try the super capacitor dragster but only with one motor with a gear printed into the axle so you dint pull as much current per pulse of throttle and you can control it easier and have less chance of flipping and destroying wheels

[@jeromehodges8898]

Im just wondering if that rear wing produces any downforce on the vehicle

[@GeorgeLeite]

And those ants are scream "Hey slow down, we're walking here!!"