100,000 RPM Skateboard Wheel (World Record)

We made a skateboard wheel spin at 100,000 RPM. I'm fairly certain that's a world record. We made the wheel on a lathe with aluminum and spun it using our 60,000 PSI waterjet.
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[@smartereveryday]

Let's do this right. I'm in.

[@gliixo]

YESS

[@AbananaPEEl]

POG

[@yeffreybeffrey]

Already excited for that video

[@ifroad33]

Yes yes yes yes!

[@arlynnecumberbatch1056]

FOR REAL??

[@imfrcd]

Another vote for the Slo Mo Guys... they use a range of Vision Research Phantom high-speed cameras, capable of shooting over 1,500,000 frames per second.

[@koreyhayden1368]

Haha I just made a similar comment. I said you guys should team up with the SloMo Guys, they just got that quarter mil phantom, it would catch it!

[@skie6282]

I think they got close to 2 mill once

[@gliixo]

Destin from SmarterEveryDay already said he's in!

[@thomasriding3194]

Bro...they know who Slo Mo Guys are...they're one of the largest channels on this platform... Not exactly a phone call away lol

[@gliixo]

@@thomasriding3194 Actually I tweeted at Destin from SmarterEveryDay about an hour ago, and he already said he's down. He even commented on the video saying so. You'd be surprised at how easy it is to reach some people.

[@xxSgtXioXxx291]

Holy crap if Destin and Waterjet Channel do a colab i will die happy

[@LivingWithGames]

You called it.

[@debadityanath4398]

destin means smartereveryday?

[@seldoon_nemar]

you need shielded bearings to keep the blast media out. you're not worried about the little bit of drag the seals create. also, if you cut a few flutes on it to so it makes a better tone, you can use the frequency of the sound to calculate the speed. peak audio frequency divided by the number of flutes. I'd also be really interested in seeing this pushed to attempted failure and then try different materials

[@koreyhayden1368]

Honestly I don't think any bearing assembly in this current day and age can hold up to 100k rpm

[@stevegredell1123]

@@koreyhayden1368 lol what like every turbocharger spins at >100k RPM. Now 100K RPM with the amount of force applied laterally by the waterjet, that's another question. Also they probably didn't balance this like a turbo spinning at 200k RPM would be balanced.

[@koreyhayden1368]

@stevegredell1123 ya thats true but those are "specialized bearings". I just meant your standard buy from an wuto parts store type bearing. Ya ones Ina turbo are meant to spin Hella fast

[@koreyhayden1368]

@stevegredell1123 also, quit being the guy that likes his own comments

[@Phoenix-ej2sh]

" if you cut a few flutes on it to so it makes a better tone, you can use the frequency of the sound to calculate the speed." Id' just like to point out for future posterity that this is how the Waterjet Channel invented their city destroying sonic weapon.

[@TranceMechanic7]

Testing different bearings to see which are best would be cool.

[@MrTurnermason]

yeah, better bearings

[@francoislebois]

I approve

[@stauker.1960]

i third this

[@kgsbowtie]

Get some high speed bearings. Possibly high load and high speed bearings depending on the force of the water.

[@122martin122]

And installing them the right way I guess

[@floydwordsworth9175]

0:55 arguably the most dangerous thing he ever could’ve done on a lathe XD

[@nicholascrow8133]

Yep, the chips in his hair mucking around was bad enough, but long sleeves and gloves made me wince

[@jacobcronk1844]

how in the world is putting shavings on your head "the most dangerous thing" you can do using a lathe?

[@jacobwood7083]

I almost ran downstairs and hit the STOP button

[@nicholascrow8133]

@@jacobcronk1844 small chance they could grab and pull you in, more chance of them grabbing and becoming spinning blades. But moreover it shows carelessness around the lathe. Honeslty though, the long sleeves are the worst bit. Yes, these are all issues that have a relatively low risk of happening, but you don't fuck around with lathes, this machine easily has the power to suck his arm in by a sleeve and spin him round until he becomes burger meat.

[@donthitmeimwoozy]

​​​@@jacobcronk1844 because a lathe can take the slightest loose material and use it to pull you in and turn you in to a red paste shishkebab.

[@Joshua-re6qu]

you're lucky that lathe didn't rip your hair out

[@TriMarko]

The gloves and long sleeves is a recipe for disaster. Latex gloves arent too bad since they will just rip but best to not wear any

[@budgreen4x4]

Yeah, no shit... I cringed

[@ToxiChaos]

You guys don't understand, he had his Safety Squints, he was fine

[@Tetrini]

his hair is like 5 inches?

[@nicholascrow8133]

Came here for this! The chips on his head gag was bad enough, but the gloves and long sleeves made me wince

[@legion162]

Based on wheel diameter 60 mm @ 100k rpm works out at 1131 km/h, or about 700mph Did 60 mm because I don't the diameter of the wheel, so picked 60 as an average skateboard wheel from Google Edit Just spotted in the video it was a 3 inch diameter wheel, so works out @100k rpm, 1436 km/h or nearly 900mp/h

[@-Jethro-]

So the wheel surface was moving at supersonic speed. Wow!

[@minefreak2000]

Glad to see the safety squints are being used guys! So glad you listened!

[@nak_attak]

The very first waterjet video I watched on this channel was the first skateboard wheel one. You've come so far!

[@thomasherzog86]

by ear i would say the difference of the two tones was about a diminished fifth which is exactly halfway to an octave. since an octave is an increase of 100%, id say a diminished fifth is about 50%, so 70.000 plus 35.000 rpm.

[@WaterjetChannel]

I knew somebody would know enough about this kinda stuff. Epic 😎😎

[@markh.876]

Close but not quite. "In pythagorean tuning, the diminished-5th is mathematically (9/8)2(256/243)2 = ratio 1024/729, expressed in decimal form as... 1.4046"

[@anthrond]

Yep, since each octave doubles the frequency, equal tempering is an exponential scale rather than linear. Multiplying by 1.5 to go halfway between the two frequencies would be a linear scale. Mark H's answer based on the Pythagorean scale gives close to what the equal tempering result would be at ~1.4 times the lower pitch for a half-octave (diminished fifth), but Pythagorean is based on ratios rather than exponents; so in equal tempering, each semi tone is the lower frequency times 2^(1/12); a whole tone is times 2^(2/12), and so forth (adding 1/12 to the exponent for each successive half tone). So a half octave higher is the lower frequency times 2^(6/12) or 2^(1/2) or exactly the square root of 2, about 1.414, slightly different from Pythagorean tuning.

[@thomasherzog86]

fine, its 42% then and not 50%...but you guys dont seem to realize that my scale was an estimation. im not sure it was a perfect tritonus and the rpm also were more than my written 70.000. thats why i used the word "about" two times in my post.

[@markh.876]

@@thomasherzog86 Please be understanding as I am a long time sufferer of SIWOTI Syndrome.

[@Wrench3000]

I would absolutely love to see Destin collaborate with you guys to figure it out. Side note: See about getting some bearings from a turbo charger. They can reach 100,000 rpm+ repeatedly. You might need to set up an oil feed by using an electric pump in a bucket of oil with a feed line and return. Or skip all that and just send it until the bearings seize or blow apart. Either way, I’m excited to see what’s next.

[@kasuha]

If you know the speed of water coming out of your waterjet, then you know your upper limit. The wheel's perimeter cannot go faster than that. And I'd guess you got pretty close to that in this experiment.

[@ButterBallTheOpossum]

The way you walk up to it while its still spinning is honestly terrifying and so dangerous. That thing could explode at any moment

[@hamboneneurosis995]

Your lathe use was top notch! 🤣🤣🤣

[@PatrickAdairDesigns]

That was nuts. Seriously that was spinning so fast!!!

[@Anthonygreeen]

Safety Squints engage!!!!

[@domenicputti4228]

Based on the footage, it took 17 seconds for the wheel to go from 77000 to 0 rpm, so the angular acceleration was 4529 rpm/s. Assuming the angular acceleration was constant the whole time the wheel was slowing down, its peak angular speed, which was achieved 13 seconds before the measurement was taken, was 135,877 rpm.

[@rasimibraimov2420]

that means top rotational speed of 3073,5 km/h!

[@edgoodman1]

I swear this channel is like the good seasons of the office. I love it.

[@paulosborne6517]

I'd like to see what sort of RPMs you could get with a full, uncut wheel of really rock hard Italian Parmesan cheese. How you'd spin-up something quite that big, I don't know, but Hell, it'd be amazing... and the warmer weather is on the way, so you could do it outside if it got a little stinky.

[@kkuhn]

Use ceramic bearings with tighter tolerance + seals to keep them clean

[@koreyhayden1368]

Ya this needs to be explored more! The "SlowMo Guys" recently got the phantom that costs a quarter mil, that camera would catch all that, you guys should team up!!!

[@adrianadair9891]

Yoooo best video in a while 🙏😎❤️

[@Christian-cz9bu]

If you're looking for high-speed RPM items, dental handpieces, (like used for grinding cavities) with no load can spin near 400K RPM. Under load, they still can spin near 250K RPM.

[@Sharpless2]

they can actually reach up to 850000 rpm

[@shiningstaer]

Y’all keep bringing me back! I love this channel

[@calvinmone3265]

You should contact the slow mo guys and see if they could help.

[@jamesterry544]

That’s badass ! I wanna see more

[@dominiklukacs7677]

Love the music!

[@ScrapFatherScrapSon]

There should be a way to put your rpm measurement tool in a spot to take real time data. Also you should reach out to The SloMo guys . They’d love to do a collab with you I’m sure

[@koreyhayden1368]

So funny how many SloMo Guys comments on this video, I also said same thing them started reading comments haha

[@gliixo]

If not the Slow Mo Guys, Destin at SmarterEveryDay would probably do it as well!

[@koreyhayden1368]

@@gliixo true!!

[@gliixo]

@@koreyhayden1368 Destin already said he's in! That was wicked fast

[@koreyhayden1368]

@@gliixo awesome!!!

[@EyesOfByes]

Just get SlowMoGuys stay at your place for a few days and y'all have content for a year :D

[@bigfan6016]

Amazing! Loved the pitch getting higher and higher.

[@UtahShark8798]

Your ears are going to get parpused

[@gregwright6281]

This channel is badass

[@jonathanhabib9265]

Can you cut grooves in the wheel to catch even more speed? (like watermills)

[@vintageludwig]

He could barely use the lathe without dying

[@mrmatt2525able]

That’s awesome, be cool to see more but don’t die! There is a lot of energy there, if that aluminum fails it will be deadly

[@RandomBogey]

5:35 Build like a claw mechanism that pinches it on the sides, like you would with your hand if you were spinning the bearing in between your fingers, but have the mechanism release it at peak 100k rpm onto a track or something to see how far it’ll roll on its own.

[@seanmcclain94]

Love seeing the waterjet again. Try using needle bearings instead of ball bearings.

[@0815Skorpio]

why is everybody trusting chat GPT, IT DOESNT DO FACT CHECKING, what ever it spits out is mostly true, however it doesnt know whats true and what is false. it can be very wrong while sounding very confident, its just a glorified chat bot, it uses what sounds logical in a sentence it doesnt care if its wrong.

[@Dog-Girl-Defect]

Gotta get ceramic bearings

[@Sharpless2]

those usually arent good for high rpm. Anguzlar contact bearings are their best bet. Needle bearing would also be good tho.

[@davidfordyoyoguy]

This reminds me of one of my 1st jobs over 20 years ago. When cleaning the "meat room" at the local grocery store, I would have to take apart and rinse the meat grinder. They had giant steel discs that could get changed out for various types and textures of meat. They have grooves on the edges to lock them in place so they don't spin in the machine during use. They spin when you set them on the floor and hit them at just the right angle with a power washer. Those grooves that keep it from spinning... I always imagined someone trying to pick it up or touch it when it was spinning and how much damage those grooves would do. The sound whined up just like this video. Truly powerful and terrifying.

[@ericcleland817]

Hey guys. I was wondering if you had thought about using something like a felt style bearing instead of steal? I live in Arizona, and a popular choice for cooling a home is a swamp cooler. The fan unit inside of the cooler has oiled felt bearings because regular steal bearings would fail far too quickly due to the nonstop moisture inside the cooler as water is evaporated. The felt inside the bearing does not move, but is lubricated using oil to allow the fan to freely spin. This would be a cool test you guys should test out, and even test the felt bearing setup using different thickness and grades of lubricant oils. Badass video thanks

[@pioneerAv]

Use some fancy CNC mill to make it a pelton wheel shape. It might capture the water energy better and go faster. Also the little scoops might fly off at high speeds, that would be cool

[@FarmAlarm]

Pretty sweet project

[@DJSekuHusky]

I noticed one of the urethane wheels you tested had ceramic bearings instead of steel ones, and it looked like the race covers helped keep moisture out and held the bearing together. I'm not entirely sure if the steel bearing failed due to water intrusion displacing grease or if the thermal properties of the steel traveling at that speed cause the bearing to expand and spit out the balls, but I bet the ceramic bearings won't expand that much (or that quickly), and it should allow the wheel to spin up faster with less resistance. Just a hypothesis; would love to see it tested. I bet if you took temperature readings of the bearings, the ceramics would be cooler than the steel ones at full send.

[@scorpsamus]

Given a 3inch diameter wheel, it's trucking along at ~893MPH 3pi=9.425nnn inches 9.425nnn"x100,000rpm=942,477 inches per minute 942,477÷63360=14.87 Miles per minute 14.87x60 =892.497MPH

[@preludedude4765]

If you want the best results you'll want a journal bearing with a flow of oil to suspend it on the bearing. Similar to a crankshaft in a piston engine. Otherwise shielded needle bearings are probably the next best and easier choice

[@jakekaplan287]

Definitely do more with it

[@KentWestergaard]

You should make holes in the wheel, like the old powerball. They did a screamer version that would go louder than regular powerballs when they reached high RPMs.

[@RandomKerbalizedGuy]

4:14 bro's so fast it's jet turbine itself 💀💀💀

[@tjg555]

Wish you could team up with the Slo Mo Guys. Pretty sure they'd love this idea.

[@slackerbelmont]

i'd like to see this with an automotive wheel hub assembly. the bearing should be shielded so it should last longer and maybe not heat up to failure temps since the bearing surfaces are larger. Overall I think the diameter of the surface the jet would hit on the hub is similar to the aluminum wheel you did here.

[@solifuctioncorruption4343]

This is pretty dope

[@nilamotk]

You guys have wayyyyyyyyyy too much confidence in your safety squints and 20 gauge sheet metal guards... 😂😂

[@3ngi_n33r]

I immediately like this channel. 👍🤨

[@JhonDiamond2021]

good job friend

[@treverbooker2956]

Try using a sealed graphite bearings Thanks for all your guys hard work I enjoyed the video

[@Lilith-Rose]

Might want to try zirconia full ceramic bearings, see how they hold up, they have a lower friction coefficient, are much harder than steel and work better at higher temperatures. The downside is they are more brittle and cost more but for an application like this with ridiculous rpm that looks to be essentially burning out those unlubricated steel bearings from the excessive friction full ceramic could offer you an edge in both performance and durability

[@Lilith-Rose]

Some ceramic bearings are even advertised as being suitable for load speeds of 100k rpm so I'd highly recommend looking into them, and ceramic or ceramic hybrid bearings tend to be what's used for dental applications where operating speeds can be as high as 500k rpm (although they are smaller In size and used in air turbine driven drills etc)

[@fred.y3890]

These guys are going to open a portal to another universe

[@azzabouy8243]

that trailer park boys clip was perfectly timed :)

[@francoisdewaal2644]

You need "journal" or "white metal" bearings to go fast. There is no contact between stationary and rotating surfaces. The rotating shaft runs on a oil film. Old technology that still works very well

[@declanr3842]

hey guys! i was wondering if you have any tutorials on the flow mach 200 waterjet nozzle head change over and oriphice? Love the vids keep it up

[@VapeTRMC]

this is when you guys need to collab with the slo mo guys so we can get a real speed test

[@mstringham]

The “do it right” bucket is appropriately placed

[@matthewmoore5808]

I've been a machinist for over 20 years and I've NEVER seen someone use razor blades as a cutoff too. Crazy.

[@mikeschulte4271]

Our washer at home spins clothes at 1,000 rpm or 300 g force. How dry would the clothes be if the washer spun at 100,000rpm and what would the g force be ? Would the clothes still be wearable or be destroyed?

[@quinnobi42]

I'd be interested to see if better bearings and some knurling on the surface of the wheel would get it much faster or even to the point of deformation.

[@thekillercardinal]

that pitch shift was insane

[@guystucker4738]

Careful with the long sleeves around a lathe. And while Nitrile gloves will rip pretty easy they can still grab and pull your hand into the work piece or chuck.

[@amingohuang7882]

Im wondering if you use a magnet bearing or air bearing it would go even faster?

[@byugrad1024]

The correct answer for ground speed of appx. 3" skateboard wheel at 100,000 rpm is around 900mph. The second answer was off by over a factor of 10, which is roughly the number of inches of circumference of the wheel. Sometimes you need to check even the work of AI.

[@celanis7164]

You guys should team up with the slo-mo guys. Watch violent deconstructions happen at really high fps :D

[@jimbothompkins]

The explosive fart reverb at the end was just what I needed

[@R_EDITS.]

Explosions are good to see.

[@RetroScythe]

I wonder if a glass wheel would explode or not, its very hard but the vibrations might break it. You could grab a glass ball and a glass drill bit to drill a hole for the bearings, you could also try drilling the hole the same size as the axle and putting it on without bearings to see if that works, it might even melt the axle which would be cool

[@keithjurena9319]

Glass absolutely stinks in tensile strength. The issue here is tensile strength to density ratio.

[@Sharpless2]

glass would absolutely explode. It would basically become a sandpaper cloud bomb.

[@RetroScythe]

@@Sharpless2 even more the reason to try it

[@Sharpless2]

@@RetroScythe i couldnt agree more

[@prestonfaceman]

if you can find a little better bearings I would pop the seal off and put a few drops of motor oil or other light oil and re install the seal. If it doesn't help lube the bearings that little bit more it should provide a good little smoke show when they fail and begin creating heat or self destruct

[@enveloreal]

The math you asked for, assuming a wheel diameter of 70mm: 70mm diameter*3.14159 = 219.9113 mm circumference. Moving 219.9113mm per rotation * 100,000 rotations per minute = 21991130 mm per minute. Multiply by 60 minutes per hour = 1319467800 mm per hour, which equates to a ground speed of about 820 miles per hour. Assuming a 3 inch diameter the speed comes out to around 892 miles per hour.

[@Ozzy3333333]

I hit 1300mph, 3.8 million rpm at 24 million Gs, see my video posted above.

[@shanemeyer9224]

That fart at the end killed me for some reason lol

[@pinduckyfarms4748]

Build a sleeve bearing with forced lube( oil). The rolling element brg has some high speed options but i think at peak rpm you have passed those numbers. Spindle motor brgs are made for higher rpm and with tighter tolerances, but i think a sleeve brg is the way to go.

[@wesleyboyer6654]

Would be cool to get The Slowmo Guys in here with that phantom camera.

[@Cyclone-od7ih]

Can't know the actual speed without a lick test to confirm it. Gonna be waiting a while for that.

[@PrismZet]

Oh jesus lol, You really need like some bulletproof vests and blast shields while testing that wheel. Maybe you could do some kind of braided wire or nylon cable that's wrapped/welded and soaked in resin to get a super tough wheel that won't explode. Reach out to the slo-mo guys or Destin to collab with slo mo stuff, i'm sure they'd be happy to cut some things for fun.

[@MStrong95]

Sounds like you need to collaborate with the Slow Mo Guys or Smarter Every Day. Pretty sure they have access to better cameras for slow motion.

[@Mercenary1964]

Would it be possible to set a magnet into the side of the wheel and read the rotations with a hall effect sensor?

[@Ozzy3333333]

Yes, easy. I use a hall to trigger my setup to 3.8 million rpm, 24 million Gs, video posted above.

[@mottomanic]

The speed of water leaving the nozzle of a water jet is between 680-1021 m/s. The diameter of a skateboard wheel 48-75mm. You whell looks a bit larger, but I'll use 75mm. 680m/s*1000=680000mm/s/75=9067 revolution per second*60=54400 rpm. For 1021m/s you get 816800rpm. With a 48mm wheel you get 1276250 rpm. This is at 100% efficiency. VERY CLOSE

[@weekendstuff]

Blacken the sides and only make one or two spots shine. Then use a laser and a fast enough photo sensitive device to measure the rotation. This is usually done with slots through the material but I wouldn't mess with the alumiums strength at that speeds. Also you might think about reinforcing your shields for that "bullet"... Weekend Stuff

[@maglen69]

Safety gear? We don't need no stinking safety gear! We're blowing things up!

[@Lucidbkeo]

yessss lud and schlatts music!!

[@morpheon_xyz]

I mean, if you guys could try and have a collaboration with Gav and Dan from The Slow Mo Guys, then you might be able to get some decent FPS on that aluminum wheel? Just a thought though, and I know that Gav would most probably be able to help calculate the RPM for you guys as well. Might be worth a shot to see what you guys actually achieved here 😎

[@StumpyBuilt86]

Id say bring smarter every day in as well as the slo mo guys. They have phenomenal slo mo cameras. Plus having a nasa engineer would be great. It would be a pretty sweet collab.

[@rallywagon261]

Mr Lahey! May he RIP! Dunsworth was by all reports a hell of a Canadian.

[@hectorsalazar5584]

nice vid. maybe try to get some greaseable and or oil fed bearings with rollers instead of balls. used on commercial production conveyor belts. you may spin longer duration and even higher rpms, but watch for metal fatigue from the pressure of the jet.. just a thought.

[@joenagel6644]

Ceramic bearings and a meet and greet with the slow mo guys

[@freekingawwsome]

@Waterjet Chanel how about brass and ceramic for your bearings

[@ireallychosethisname]

seeing long sleeves used on the lathe makes me flashback to the shitty 90's vhs saftey films where peoples limbs pop off n shit.

[@dimitar4y]

AHAHHA the fact you managed to get a cut with the knives on the lathe... xD

[@alandavis5820]

Recommend sealed bearings, or maybe even some sort of magnetic bearing (superconductor and permanent magnet maybe?). As for the camera you should hit up the Slow Mo Guys for a collaboration.

[@captaincaveman8377]

Better sealed bearings. Also use sealed bearings but remove inboard bearing seals and fill cavity with grease or oil before you put the wheel on the truck to provide the bearings with additional lubricant

[@wyattmuehr196]

I think you guys need a SloMoGuys crossover episode

[@ireallychosethisname]

better bearings/grease of course. but also it'd be neat, albeit a lot of work, to try to make a highspeed water wheel shafted to some sort of alternator just to show how much raw energy is involved

[@nicholascrow8133]

You should team up with the slo mo guys to show what long sleeves plus a lathe can do... Lathes are no joke, respect them. You can get away with mucking around/long sleeves a thousand times but you only need to get caught out once...

[@papawoopty8986]

wow ❤️ pre heat the bearing with more clearence