This video would not be possible with out Justin, his skills, knowledge and material! Please go check out his channel! kzfaq.info

Nice. I’m definitely in for seeing it go above 432mph

There's only one solution to every problem. More Power!

I would add a draw string cut off to the engine system. This way you won’t have to get into the danger zone when shutting off the engine.

Holy moly, that rim only test is really really dangerous.

You need remote control of the motor. You should also have some kind of blast shield (similar to the Mythbusters). Ever seen their video of what a tire flying off a big-rig does? It is a lot heavier, but your speed is higher. Also, 400+ mph is getting into the range where if the metal did fail, it could puncture you like grenade fragments. Probably won't die, but it will do some damage. Remember also that doubling the speed multiplies the force (and damage it can do) by 4x. 10x speed is 100x damage, etc (squared relationship). Protect yourselves.

Dude, I love what your doing on your channel. Great slow motion on the GP. Keep up the good work.

Awesome video Chris, that was pretty epic. Congrats on the new addition to the family. She is precious.

This channel is so underrated.

I would love to see it spin fast enough to break the rim

Found my new favorite way to dismount bicycle tires.

Nice one Chris, you do come up with some crazy ideas 👍 congrats on the new arrival 😀

Despite the spokes being pretty thin and the rim being made of aluminium these wheels can bear quite heavy loads. When I am on longer trips I typically have 22kg of baggage with me plus several liters of water and also some food. My bike weighs 17kg, and myself more than 90. So the total weight is about 140kg of which maybe 20kg rest on the front wheel.

Chris, Chris, Chris..... I love ya man! Good stuff. Used to do this kind of stuff when I was young. “Wonder what would happen if we did this”. Great video. Loved it

Conservation of angular momentum from the tires is keeping it from speed. Take that tire off of the 10 speed wheel and lock the derailer in one gear ( preferably high). More tension on the chain so it dont fly off.

Thanks Chris keep up the great video's

Yes!!! More!!! What a crazy awesome idea.

Thanks for the content!

Loved it!!

This was great. Push it harder!

Chris that did look like some fun....You had me interested from the start to the end....I was thinking wow,what is gna happen hahahahaha... Nice Vid bud..

Change the gear ratio to an easier gear, as spinning a bicycle wheel REALLY fast could use more power than you think as the wind resistance power cubes with speed. Even if it only takes say 50 watts to spin at 1000 rpm, then 2000 rpm needs 400 watts and 4000 rpm 3200 watts etc.

There's this British dude who makes stuff and Blows things up and I believe his name was Collin something or another and hes pretty big into using the "Safety Ties" maybe you should see if he'll send you one! 😁

Another great one, gotta love breaking stuff.

Hey, thanks for dispelling a lot of misconceptions! That explains how dragsters with motorcycle tires work at all!,

Awesome Chris! Always look forward to your videos! The new safety helmet is great lol

What failed the good wheel was you deleting the derailleur system. Put it back on so it can guide and tension the chain. The chain only came off because of that. And you might drill some holes in the base to peg it down for stability. Those spokes made a lot of wind noise at the higher speed without the tyre- maybe you could get some carbon fibre spoke covers or a full disc wheel to test to destruction? Use a small car motor so you can keep gearing it up until a good tyre explodes.

Totally awesome! Congrats on the little one. Cheers

Just found this channel and it's awesome

Follow up video brother, three years in the making, let's see it!!!

Good stuff Chris. 👍🏻

Simply awesome Chris but maybe a little crazy. But that is why we love your videos. Thanks

That is the definition of cool!!!

Please do more with this idea it's super :)

A more practical question that I've wondered about: How fast can the wheel spin under load, before they fail? How fast can you actually ride a bike before the bearings can no longer handle it?

My dad, that wheel isn't designed to be used for a 20mph motorized bike Me:

Awesome!!

HAHAHAHAA nice wild idea. keep it up and take care

Been wanting to see this for years

That's cool, I'm doing some inventing and needed this research.

Useful info

Alternative title: How fast must Chris Rollins pedal before he becomes Chris Slidens?

I'd be curious to see how long the engine is going to run after being blasted on its side while running without oil circulation!

I actually have 2 questions. 1. Are the spokes in equal standard tension? 2. Why is the tyre not inflated? Because it can affect its stability and gripping power onto the rim. I suppose these two are affecting the limit of the spinning speed of the wheel, right?

that's great. now i feel confident driving my motorized bicycle 🤩🤩🤩

thiseans that my 60 mph ebike idea is actually viable (I don't think ill ever do it though lol)

Nice! Maybe some stakes or steel pickets to anchor your rig, stop it from flipping up and destroying the motor, otherwise I'd love to see a continuation of this experiment.

Googled something and got what i was looking for. Nice video!

MOAR!

the slo-mo guys need to do this

Iv genuinely always wanted to no this! Not watched the video yet so lets go!! ❤❤

More, please!

I would love to see you spin up the wheel without a tire again but use an electric motor so you can ramp the speed up and down remotely as well as being able to play with different gear ratios.

Like grownup kids with better toys and budgets. Love it

so youre saying i dont need reinforced wheels if I mod a bike to go 50mph?

I want more speed!!!!!! Go for it!

"...and then we did an 8 second google search and found out the record was made on 17 inch motorcycle tires."

Now THAT’s FUNNY!

That old tire did pretty good.

At last. Another great video. I know you had a reasonable excuse for not making videos at the moment. But we are all missing your videos 😁😁😁😁

Replace the coaster brake hub with one from a 10 speed, but replace the derailer style gears with the single gear. I predict one of two outcomes: the chain fails or the centrifugal clutch on the engine fails. But before that happens, you might get a bare rim up to a thousand mph before the failure happens.

Hi Chris, I was a bit late with watching this episode but once again it's great. Try putting a piece of paper to it (what we did when we were kids), or blow some air at the spinning spokes.. what sound would it make lol. But mind your safety! Greetings from The Netherlands.

Love your tee shirt! "Commonsensless."

Want the helmet? Nah. I'll just run fast. Relatable.

That tire performed like a Hancook does !!

Next video: hooking a bike tire to a v12 Engine

Congrats again on the little one. And you can double that, the wheel not the little one. 😉

You need to use rebar to steak the motor and frame to the ground.

You need to make a much heavier sturdier rig, you should use a VW engine or a 22r engine out of a Toyota, maybe control it with a peddle or a line, the only reason I am suggesting that you use a 22r engine is because 1 they are cheap 2 they are absolutely indestructible and 3 they are super simple to get running without having to worry about mounting them in vehicles.

More Cowbell !

you are really out of mind... but I like it so much... I am doing cycling and I always wondered how fast can I go with it before it's collapse, but now I realise it's going to fly before collapsed... so crazy 😜

I'd try it with a known good, decent quality tire fully inflated so it's fully expanded to catch the bead area of the rim. Also, I'd stake that thing to the ground so you don't have to chase it when it fails. I think the goal is to see when the bike wheel fails, not when the motor dies of oil starvation on its side. Also, attach that break arm to the frame, if its moving around it may well be allowing some drag on the coaster brake shoes. I'd also make sure that thing is well lubed and adjusted, that way you know it failed because it saw its mechanical limits, not just due to it being poorly lubed or neglected. I would think that the most likely failure points would be either bearing failure leading to a thrown chain or broken axle, or separation of the rim at the weld or seam. Balance, or lack of it will be the downfall.

Nice! Ive always wanted to boost off a car but was worried the tires would eplode

I think you should follow up on this one ...this is interesting and its very curious just to really know how many rpms and how much torque to overcome the resistance and breach the integrity of a bike wheel....not even Google knows answer ...never been successful executed...you guys are the ones who can pull it off I bet

Make the sprocket on the motor bigger then make the rear smaller that should increase top speed.pretty cool experiment

I think the centrifugal force is being released through the unsturdy frame that kept lining itself up to kill y'all.

More please

GO for it!!! See if the wheel (and other parts) can withstand 800mph 😜 ...(I would seriously consider watching that from further away. 432mph is No Joke)... Someone started a thread years ago on a motorcycle board, What do you think is the highest-tech part on your 200mph Hayabusa... Answer was the TIRES... Just think about what tires have to endure, with what for the most part is 100% reliability/safety... Crazy G-forces and stresses of all kinds, abuses and torture (on all kinds of surfaces), plus under all conditions from below freezing up to and including rubber melting temperatures 💪👍

Needs for love

great now i know that its safe to put an engine on a bicycle and go 70mph on it with out worrying that the wheel is going to explode :)

Wife: he’s probably out there with a bunch of women! Me:

You need to do it again but with a roller or something pressing against the wheel with half the weight of an average human to simulate the road pressing against the tire

Good times!

Now That was Funny

Yes! Push it further. Cant do half a job lol

I need that shirt!!

i know this video is 3 years old but you need someone to put some servos on the engine to remote control the throttle and kill the engine without running up to it. you probably should of had a roller on the bottom to simulate road pressure as well it could make a drastic difference in performance. also sand bags to hold the rig down.

This is even more hilarious to me, because I'm designing & building powerful e-bikes, and now I'm in the position where I can't find much or any motorcycle tires that can fit bicycle wheel sizes, and bicycle tires don't have advertised load & speed ratings like like motorcycle & car tires do. I found e-bike specific tires like from Schwalbe marathon series, and a few e50 tires rated to handle 50kph. But that's it. So for any engine kit bikes, I gear for 50kph or whatever an e-bike tire is rated for. And for e-bikes, getting high voltage controllers and wiring batteries more in series means more voltage, means more top speed and rate-of-acceleration, and through a Cycle Analyst V3 or programmable controller, I can just set the maximum speed the motor will cut off at. So whether its engine bicycles or electric bicycles, I stay within the speed ratings of the tires, so I don't die or hurt innocent people, from a blown tire crash, but try to reach that rated top speed as soon as possible, and even climb steep hills at that speed. If you're wondering why don't I just build a motorcycle. I'm currently living in an apartment, and I'm not parking a bigger bike outside to be tampered with or stolen.

TO ACHIEVE HIGH SPEEDS ON A BICYCLE WHEEL YOU NEED TO: 1. Rotationally balance the wheel "perfectly", if the wheel is off balance by as little as 1 gram at high speeds the centrifugal forces will change the one gram to one once! This will cause the wheel to start oscillating like a sledgehammer swinging from the axle. 2. Use an airtight valve cap like those used on suspension shocks. Why? The centrifugal forces will cause the air valve core seal to open. Or just use a Presta air valve to lock down the air seal. 3. Use a super lightweight road tire with high count TPI, because the tire will want to expand at high speeds. 4. Use aero spokes for very obvious reasons. NOW GO FOR IT!

Neither of these guys has any clue of the potential energy they’re dealing with. When that thing self destructs, it’s going to be worse than a hand grenade and the shrapnel is going to maim and/or kill someone before you can possibly blink. Seeing it jump and rotate the blast radius in their direction, and they’re still shutting it off with their foot instead of devising any type of remote kill, even a 10 foot pole, tells me these fools are due for a serious injury in their future. Sucks because I had a good friend who died doing this type of shit, he even joked how he was surprised he lived as long as he had with all the reckless shit he did. Well one day his luck ran out and 15 years later it’s still a fucking shame.

it would be interesting to try this again, with a carbon fibre race wheel and higher gear - you would get some serious speed up

now that's some fun!!!!! Are you going to spin up again?

Remote kill switch. Bring fire extinguisher. Fasten rig to ground. Clear dry grass. Safety gear for all.

the ? is would have fail the same way with load on the wheel?

Ten speed wheel just needed a chain tensioner ❤

That happened to my tyre once, when I was late for school.

Cars need to add little weights on the rims cause of Balancing of rotating masses. Seems to be needed by bicycles at high speeds, too.

lol i myself for the chain issue jumping around id stick a chain tensioner on it

MY HEART IS POUNDING JUST WATCHING! It would be great if you guys could do it again until the rim explodes. I have this page up on centrifugal force, and objects that spin like a top. I literally prove with engineering text book references to flywheels, that nothing can spin over 1000 mph without exploding. No material can handle that, since the min tensile strength required is 215,000 psi. You also need solidity to spin, a broken ball cannot spin. Thus, from an engineering standpoint, globe earth is a total impossibility. The crust is mostly basalt 1900 psi tensile strength, and it is all cracked up, underpinned by tectonic plates. When you factor in the weight of the behemoth globe, you get trillions of psi of stress around the equator. I found your video when I was looking up spinning objects exploding. I like the fact that the wheel has spokes, but ultimately, it will still explode. It would be cool to calculate how much compression tension the spokes create and compare it to the tensile strength of the rim material, and then see how fast it can go before exploding. It's very dangerous. But so far nobody has exploded anything that big. We will see how much difference the spokes make compared to the theoretical without spokes. What do you think? Here is my page on Blogger spin1.flat.wtf

DOOO IIIITTTTT!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!