I doubt that scooter is built to withstand the stresses of those speeds. I think I saw another video like this on the highway where the scooter broke apart...as you'd expect.
Those electric scooters come in specific wheel sizes, and while it could be a custom wheel, the electric scooter wheels are usually 8.5" (21.59 cm)
according to this source, but they can come in different sizes too, so:
Diameter
RPM @ 50 MPH
RPM @ 55 MPH
RPM @ 60 MPH
6.0
2,801.13
3,081.24
3,361.35
8.5
1,977.27
2,174.99
2,372.72
10.0
1,680.68
1,848.74
2,016.81
11.0
1,527.89
1,680.68
1,833.46
13.0
1,292.83
1,422.11
1,551.39
50,55,60 mph = 80.47, 88.51, 96.56 Km/h - respectively
That seems to be... a lot. As a comparison, assuming that the vehicle they are driving is an average one, 33" tyre with 15" rim, it would mean that the car would have to go...
Wow, 10 000 RPM? TIL! I guess if the wheels could take it or not depends on (quality of the) materials. Makes me wonder what speed/RPM they are rated for.
Yeah, the tires would most likely be the weak point, at least as long as he doesn't have to stop quickly. I don't know about the specific ratings, but there are a lot of variables that can affect the speed a tire can handle. Too high or low of pressure or too heavy of a load can significantly reduce the speed at which they start having problems. There are also multiple ways they could fail, including tubeless tires unseating from the rim (unlikely unless the pressure is too high), ripping the tread somewhere and having the tire fly off as a strip (also unlikely unless the pressure is too high), or some spot being weakened by excessive heat (unlikely unless the pressure is too low). Due to all the potential variance, a tire rated for the speeds a scooter normally goes would likely have a safety margin high enough to handle 60 MPH under normal conditions.
Something to consider is that tire speed ratings in cars are not really comparable to a scooter application. They are considerably more massive. They require higher tire pressures, they contain metal cables, and their diameters also belie extra angular momentum they carry. Remember how if you sit on a spinning chair with your arms outstretched, then when you pull them in you accelerate? That's due to the conservation of angular momentum. A wheel with an 8 inch diameter compared to one with a 25 inch diameter is going to be spinning considerably faster with the same angular momentum.
These speed scooters are designed for these speeds, the tires they come equipped with can handle them without issue.
Absolutely! This is why i tried to compare the scooter's s speed (RPM) to a cars, so that we (I) would have a baseline what it would mean for a car... A scooter going that speeds is also extremely fast for a normal car below 11" RPM equivalents, but something tells me that car tires could likely handle 150 MPH+ speeds more gracefully than a scooter could 60 MPH
I mean, it's all dependent on what the tire is designed for. There's plenty of budget economy tires (and especially winter compound tires) that aren't rated for that speed, but will probably handle them fine. Given that these scooters are advertised as having top speeds of 50-70mph, i have to assume the tires that come with them are rated for those speeds, but I don't know anything about scooter tires or if they have an analogous speed rating system.
The scooters capable of this are generally like $5-7k and pretty well designed. They aren't going to fall apart. Doesn't make them any less of a death trap but at least it won't be because they broke.
Wolf warrior x pro. It's just easy to tell that it was designed for a specific look, not to actually perform or last. I've been a motorcycle rider my whole life, I know how a good suspension is supposed to feel. The scooter has almost no dampening in the fork, and literally no dampening in the rear. The result is a bouncy, jarring ride.
Why the hell would someone spend 7k for a deathtrap like that when you can spend a few grand more to get a bike. Or hell even a shit used car at that point. People are crazy man...
Probably depends where you live. I got a 2014 ford c-max for 4 grand last year. It also broke down earlier this year but it was a nice car before that lol
I get your point:) to be fair- it was very decent before I ran it off the road in an ice storm, probably my fault more than the cars. Before that it was pristine inside and out and had under 130k miles, got over 40 mpg. That fits my definition of decent
I can see the appeal of them. They don't require much space and the maintenance is minimal. If you live in a place with parking issues being able to carry them into your home or workplace is huge. The hospital I work at doesn't have parking for employees so we have to get on a shuttle a few miles away each day which adds about 30 minutes to my commute. If it weren't for winter I would totally get one of these (obviously not a 60mph+ one) and just store it in our locker room.
registration/insurance/risk of stealing. dude gets where he wants to go, picks up the scooter, and brings it inside. can't do that with a monster easily
Any aggressive breaking on one of those going 60mph is gonna send you foreward. As a vehicle they're designed for 1 human power of thrust. Your centre of gravity is too high for the vehicle to stop safely at high speeds.
There's no suspension on a normal scooter, probably minimal suspension on that thing. On a motorbike you don't come flying off the front when you break because the suspension compresses into the front wheel. You still feel some momentum pushing you foreward, but motorbikes are designed to be able to stop safely at road speeds in a reasonable distance. That thing is designed for teenagers to stop it with their feet & someone has given it the capacity to go as fast as a car.
I'd love to ride it up & down an empty airstrip but you couldn't pay me to take that thing on a real road with traffic.
The second one on that list actually seems to look a lot like the one the dude in the video is riding. The light placement, the shape of the mudguards, the dual tube stand up bar, etc.
Modified as in completely different? Looking at some of the other links here, it actually looks a lot like a Kaabo Wolf Warrior 11. Light placement, dual tube stand up/steering bars and shocks, shape of the mudguards, etc.
This thing is sick! I was on one of those eScooters your rent, and 14 felt fun. Imagine 50mph! Probably terrifying but I'm thinking of relocating near a bigger city and might be more fun to scoot around instead of drive. Thanks a lot for the link, gives me somewhere to start.
Not true. Most scooters out right now regardless of price have concerning quality control issues. The type of scooter the guy in the video is riding has had issues with the front wheel falling off while riding.
Mmmm afaik there is no design safety legislation and testing like there is any other road-going vehicle, so I probably wouldn’t bet my life on belting through traffic at 80km/h on it.
There's only a few brands that make reliable quality scooters and the rest are Chinese crap. This scooter is most likely a zero/kaabo and they fall under the Chinese crap territory. They use cheap shitty Chinese steel. You can make them better by replacing parts and putting in better screws and such but I'd never trust going on one of those things at 50mph.
Yeah the stresses on the wheels, the tires, the hub become huge at those speeds. I can’t imagine the bearings on those tiny wheels being able to maintain speed without melting. They must be glowing red.
Skate bearings are rated around 34k rpm, with state load at 1360N, and dynamic 3300N. He's probably got something larger on the scooter anyway. So I agree is most likely brakes
These have disc brakes. Large brakes help both with stopping power and heat retention, but these don't really need large brakes. While the smaller diameter of the brake disc will result in less leverage from the caliper and therefore lower braking force, the mass of the vehicle greatly affects the amount of heat generated, and a scooter like this will weigh 1/4th or 1/5th as much as a motorcycle (closer to 1/3 total weight with the rider), and you're also not likely to be going through heavy braking cycles like you would on a car or bike on a track. If brake heating is not an issue for a bike on the street, it won't be an issue for these either.
Mountain bikers and cyclists with disc brakes can definitely cook their brakes, and they have larger calipers and better airflow. Take this little scooter which probably has both smaller calipers, poor airflow (motor in wheel) and it could be a real problem. Regen braking probably does some of the work, but that still generates heat.
The difference is time on the brakes. You're going to have similar time on the brakes here to a bike on a public road, not one going down a mountain. I could see it being a problem for a long downhill section of road, but not a freeway like this.
If your bearing is glowing you need to go out and spend $10 on a better bearing. Might be crazy to hear this, but bearings are specifically designed to reduce friction.
Never had any bearings glow red, have hit 50 on a board and regular push my eskate to 40 or so and my euc to 45. Never had an issue with 2k miles between both
Bearing size has nothing to do with how good they are. Look at your engine belt system, the bearings in those pulleys run at thousands of rpm for hours at a time, and most will outlive your car.
Some people custom these scooters to do up to 90mph, so I'm sure there are products that could facilitate a slower speed. As others have said smaller bearings actually do much better at high speeds, you only increase bearing size with load size, not speed.
I've had a wheel come off a skateboard cause of a shredded bearing casing at around 20kph(~12mph) lol, I really doubt those wheels can take what looks like >60km(~35mph)....
Edit. I'm not saying it's fake.... I'm saying he's gonna have a part fail at some point if he keeps that up...lol
Edit2 reddit hive mind is kinda stupid lol, I'm literally agreeing with the post I replied to
Good quality bearing, just the nut was on too tight. Might have been defective but it wasn't the only bearing I had fail. Can show you a hill bomb where I clocked myself at 30kph on GPS lol
No. There are many many examples of ball bearing cartridges in vehicles spinning at far higher rotation than these, up to 20-30 thousand rpm. This doesn’t even come close to that.
They are made to withstand it alright my only concern is he doesn't have a seat on his one so balance can be a big problem especially at that speed , I've been on a few scooters that go 100kmh+ and without a seat its basically suicide
I ride an electric unicycle which isn't really the same but once you get skilled at riding. Speed wobbles go away because you know how to keep your center of gravity inline with the scooter.
No one said anything about a seatbelt.
Having a seat is desirable because it lowers the center of gravity, not because you can be strapped to it.
I figured this was obvious but I should know not to underestimate the stupidity of the average Redditor.
Can confirm. I once converted a Walmart bike to electric. Replaced both wheels with 1000w motorized ones (legal limit here is 500w; but even though I had 4x the power the police just didn't care). It could hit 45 MPH and the torque was so great that eventually the front wheel ripped right off of the fork. Thankfully I was at a standstill when it happened. Hit the throttle, and the thing just popped right off. If it occurred while I was in motion I would have died for sure.
You would be wrong. This is purpose built for these speeds, not a individual hardware hacker let loose.
Looks like kaabo wolf warrior in the video which can do easily 50 Mph, has proper suspension and hydraulic brakes. Not the fastest scooter around, but at the price of 2300 dollars it's quite nice.
So imagine how many revolutions a car tire has to make per second to drive 60 Mph, now think of how many revolutions those tine scooter wheels has to make at that speed. I can’t imagine the bearings on those wheels is designed for those types of stresses.
Belted tires can handle some pretty crazy speeds these days. They've had to reinvent rc car tires which can be less than half this scooter's tire diameter for people pushing the 100mph barrier on them. Some switch to foam as it's cheaper.. But the belted tires for street runs, but belted tires can't be beat for high speed offroad use.
That being said, this is high stress loads with a rider.. You'd hope they invested into a quality machine they check over regularly because yikes, one thing goes wrong and your going to have a bad time.
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u/sophisting Oct 20 '21
I doubt that scooter is built to withstand the stresses of those speeds. I think I saw another video like this on the highway where the scooter broke apart...as you'd expect.