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.

[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.

[xxSgtXioXxx]

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

[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

[TranceMechanic]

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

[legion]

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

[floydwordsworth]

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

[minefreak]

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

[Joshua-requ]

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

[thomasherzog]

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.

[nak_attak]

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

[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

[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.

[GoodWrenchk]

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.

[PatrickAdairDesigns]

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

[domenicputti]

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.

[nilamotk]

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

[VapeTRMC]

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

[Christian-czbu]

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.

[kkuhn]

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