New "Donut" Motor BREAKS Records!

[@MrJdsenior]

It's not just rotational inertia, it is also unsprung weight as a severe negative to handling, as it takes a lot more weight on top of that to make a useful suspension hanging that kind of mass on the wheel. It make more sense to put the motors at the corners of the car, and couple them to the wheels with a driving shaft.

[@EpicTimeV7]

unsprung mass for wheeled vehicles is just stupid. It doesn't matter how much torque will it produce. It can produce all the torque of the universe but if they want to use it as unsprung mass then it's just stupid.

[@Menon9767]

Only till a certain point. There will be a point of time, where these in wheel motors are so light that it doesn't matter. I'm giving this another 10 years and it will be everywhere

[@EpicTimeV7]

@@Menon9767 Yeah it will... In flying cars

[@Menon9767]

@@EpicTimeV7 Let's say you have 30kg of unsprung mass per wheel (many cars go higher than that). If you get a motor that weighs 5kg into there, it won't make that much of a difference. And since electric motors can regen brake, you can downsize the actual brakes without sacrificing performance. This is why I think they just need to get a little lighter and then there won't be any major drawbacks anymore

[@chumpthetraitor7331]

​@@Menon9767 agree but there's a big barrier : anything magnetic has to involve iron, which makes it heavy.

[@andrewharpin6749]

For low speed, usually off road applications, where unsprung mass doesn't matter so much, then in wheel motors make sense from a packaging a usually a practical perspective. For high speed applications, e.g. cars and motor cycles. The significant increase in unsprung mass is massively detrimental to handling. Reports I saw for this prototype stated it weighed in at 40kg bare, which is a huge amount of weight to add.

[@jonnupe1645]

I recently learned why hubless wheels aren't as popular, basically the roll resistant makes the technology a downgrade instead of an upgrade. It's definitely good looking but you're spending more energy just to use the wheel

[@andan2293]

I wonder how what bearings they use and how they seal them.

[@Nobody-Nowhere]

The issue i would see with these is the possible impact damage, all you have is the tire directly around the motor that needs quite good alignments for the bearings to be smooth.

[@acegear]

this remind me of hubless electric motor bike which is now defunct and has so much bearing that it cant even freespin like a normal bike and too much noise even pedaling is like a workout you will get tired halfway to work

[@jonnupe1645]

Lol I saw that video too. That guy looked like he was I pain 😂

[@zeitgeist888]

Nice overview. Like internal cumbustion engines have evolved over the decades of use electric motors still have development improvements for each use case. I hope hubless motors like Donut lab and axial flux motors can do well and find their best application as they continue to develop. However unsprung weight and durability are still real issues for in wheel applications. The power or power density seems to be a non issue or very minor.

[@HansMilling]

There was a bicycle who promised this. The wheel did not handle small potholes or edges or anything like that without breaking and they were so noisy. The friction is much higher with this design so they are very inefficient.

[@gabrielghanem8253]

If you're talking about the reevo bike no it did not have the motor in the wheel, there is no comparison here

[@okamiexe1501]

hey tech bros I got an experiement for you: take a bottle cap. try to crush it Now cut a hole in that bottle cap and try to crush it. bring me back your results.

[@tessenCNC]

honestly... this doesn't seem new to me, it's still an outrunner type brushless motor.

[@THEScottCampbell]

700 foot lbs. of torque??????? Who CARES what the horsepower is! A motor like that could tow a HOUSE!

[@licencetoswill]

the formula for power is p = torque x rpm. if it doesn't rev, it's not going anywhere.

[@mikecoote9546]

Love your work. I am trying to source a couple of high torque, low rev and small diameter electric motors, (150-200mm dia, 1000RPM, 10-30KW) I want to use them as direct drive motors on a 4 wheeler with short driveshafts to the wheels. Most motors are too larger diameter, which means that to obtain sufficient ground clearance, the drive shafts end up being at a very acute angle. Any thoughts? Thanks

[@MrStevos]

Other than it "Looking Cool" unless applications are found where the hollow center is actually useful for some specific further purpose, this will just only be the type of curiosity, that gets us idiots to click on it !

[@Tech_Planet]

Why would you be an idiot? It has high torque for machinery/equipment at low velocity. Seems somewhat of a good idea for application with an open end on power source.

[@MrStevos]

@@Tech_Planet I may be wrong, but there are endless types of motors & one should select the type which best fits the application. This specific design I doubt would be the over cost benefit stand out even for "high torque / low velocity" applications. The cost & durability questions about this type, would most probably only be justified by the actual specific need for it to be hollow ! Or if you're willing to bare those additional costs just to look cooler...

[@Tech_Planet]

It's a radial flux motor and it's on the market built in in a Verge motorcycle. I intentionally gave a example of an axial flux motor working in direct drive yet it is more expensive (more than every EV radial motor out there!). Even more than this particular "Donut" motor for motorcycles. If you don't believe me go look at Yasa 750r price points, you would break before even getting to the frame of the bike. It's difficult to select the best motor for the application because of economics. You are not wrong, I think somewhat pre-emptive on application of motor but I do appreciate your comment! I value your honesty and we need to have constructive criticism on new motors that are marketed like this one.

[@MrStevos]

@ Yes, AND - It sure is cool looking ! 🙂

[@hamjudo]

Industrial robots often have large pass through joints for running cables and hoses from external equipment all the way to the end effectors. Those robot joints need massive torque, insane precision, but not a lot of speed. They almost always use gears rather than direct drive.

[@michaelperrone3867]

It's a cool motor design, but I would be worried about impacts not being damped by the suspension of the car; it would have to be quite rugged or you'd have to change the wheels a bit so they perform the function of the suspension as well...

[@tuvoca825]

Brings with exposure to.the road... expensive to maintain and super loud once the beings go. How do you keep the beings clear so they handle weather?

[@christopherd.winnan8701]

An unsprung in wheel hubless might not be ideal for locomotion but it would make for a great genberator! The design does not look much more than a couple of high-end lazy susans, stacked tightly and then loaded up with Neodims? Maybe you could 3D print a prototype?

[@Tech_Planet]

I agree, it's more generator orientated without unprung mass!

[@christopherd.winnan8701]

@@Tech_Planet - I know some big susan makers. Can you get the electronics from PCBWay?

[@STYX-a-Lot]

LISTEN… that motor doesn’t have to have a gearbox for higher gear ratios… It just needs 3 layers of motors. All three are connected to the wheel for first gear… then, two are connected to the wheel, and two are connected to the frame for second gear… And finally, the innermost layer is connected to the frame, and the outer most was connected to the wheel… And the inner layer motor is not connected to anything. This would be third gear… All three of them launch off of each other so the final ratio is three times as fast. This approach doesn’t take up any more space than an occupies now… But it does increase complexity by having three separate thinner motors that launch off of each other. All that is needed for engagement is electric solenoids. This approach is literally supreme because there is no meshing of gears.

[@marcfruchtman9473]

Not really a fan of these types of motors for any vehicle where the wheels are set apart in parallel such as in a car, in case 1 fails, it would usually be a problem. However, if there is only a single wheel powering, such as in a bicycle, then failure won't cause the bike to lurch to left or right. However, hub-less designs are very tricky... and much harder to design.

[@alexchaux8949]

The video never mentions unsparing weight, which will make this tech very difficult to adopt in Motorsports. Take motorcycles as an example. The combination of increased rotating mass that is unsprung will radically change the handling characteristics and suspensions will have to be redesigned. If you follow motorcycle racing you will know that radical concepts to forks and swingers have not been very successful. If new tech fails at the race track, gear heads will have their doubts. Achilles heel in my opinion.

[@Tech_Planet]

How so? I mentioned longevity issues which would be a result of un-sprung weight. The performance and result are correlated.

[@alexchaux8949]

I’m not referring to longevity or durability of parts, but rather the handling characteristics when you add unsprung weight and rotating mass to a vehicle. The Flyin’ Miata channel has a video that gives a pretty good explanation. In short, the whole suspension system will have to be beefed up to handle the extra unsprung weight, and the vehicle becomes sluggish and harder to turn

[@Tech_Planet]

Got it, that is a good point to dive more into, especially for fwd systems. I like that channel you mentioned, there are lot's of good information videos on there!

[@paulbernier3484]

@alexchaux8949. Salut J'aimerais avoir ton avis sur la fameuse Stark Varg que le fabricant annonce une puissance de 80HP. HHHHMMMM! HHHMMM! soit 59 680Watts 😜 QUOI !!!! 80HP dans un moteur qui fait de 8 à 10 pouces de diamètres, c'est n'importe quoi leur Stratégie de marketing à mon avis. Elle est frauduleuse. C'est de la fausses représentations mais personne se plaint. ILS fournissent pas les SPECS du moteur ils se contente de dire 80HP et faut voir la façon qu'ils font les bancs de charge. C'est du jamais vu , enfin pour moi. Qu'en pense tu, merci et bonne journée.🙂

[@bobnomura2068]

For motorcycles 80+ lbs is a lot of unsprung weight. The ride must be pretty bad.

[@StevenHoman]

With power to weight ratios of that sort, what is preventing its immediate implementation? The other considerations will be dealt with soon enough, as the benefits of having it operational are too powerful by nature. I have shared this with an engineer friend of mine for his consideration, although I initially like it.

[@SandTiger42]

$30k for that motorcycle, when you can buy a comparable one for $5-10k with a combustion engine. Fail #1 I bet it also has Fail #2, where the range and power efficiency isn't as good as well.

[@stevejeffryes5086]

Anyone who says anything can produce x pounds of torque is getting it wrong. Torque id not measured simply in units of force.

[@wargamingrefugee9065]

How else is torque measured, please?

[@RinksRides]

You mean BIG ASS OUTRUNNER BLDC?

[@feandil666]

Isn't an electric motor more efficient at a given RPM ? How efficient are these really without a gearbox ?

[@hunnybunnysheavymetalmusic6542]

I'm gunna stick with good old thermal power.

[@VonKickass]

Love your balanced approach to new tech. Your format and editing is on point. Keep up the great work 🙏🏼

[@Tech_Planet]

Glad you enjoyed the video!

[@EJP-Concept]

​@@Tech_Planet ​ There is a new engine concept on YT. Thanks for sharing.. kzbin.info/www/bejne/emG2e3mbmLqHeLssi=qtk4fy0RA0adHwzm

[@eastindiaV]

0:37 the battery current goes in here Yes And out through the post Yes And it makes the magnets spin Yes That's how electric motors work

[@Gaubert_s]

Se produce a un costo bajo ??? Y porque sale 30 mil usd . Precio inicial . moto .

[@dennislevy3603]

No liquid cooling so it will melt in practice. Only good for bling

[@id104335409]

No it doesnt. Independent test! I saw their own claims. Please! All they have is good marketing.

[@dragon72tube]

COULD BE THE FUTURE WITH THE NEUTRINO GENERATOR! NO NEED TO CHARGE THE ELECTRIC CAR, RUN FOREVER!

[@ZorgKirill]

All donut motors with large open holes are crap for everyday use. The bearings are too expensive and too open for bad conditions. In electric unicycles, they are usually covered and have small bearings, that are completely silent and can live under wet weather and winter salts. By the way, recent electric unicycles are as small as a gaming PC block, but can archieve speeds of 90-110km/h and range of 100-250km, making electric motorcycles obsolete and useless.

[@Gaubert_s]

falta que los chinos agarren estás ideas la mejoren y la hagan funcional y en vez de 30 mil lo vendan por 3 .

[@BearerOfLightSonOfGod]

Let’s see a real motor

[@legoenginemechanic101]

Not a good motor yet. However a very promising design

[@cloudnine5651]

seems pretty useless at $30k. would still be useless at 1/10th that price

[@moses5407]

raxial?

[@emilecrotteau7312]

🇨🇦 THANK YOU FOR BETTER AND MORE INFORMATION THAN THE MANUFACTURER IS GIVING ,,,WIL CONTINUE TO WATCH THE DEVELOPMENT

[@ayanshproplayer5559]

Hay i noticed something it's Annoying me Every time Why sound eyeeeeeeeee If any manufacturers waching this we need Role Rolyeal (Warking in petrol)type no sound EV motor

[@DeeP_BosE]

Crap compared to axial

[@CraigLandsberg-lk1ep]

Would not pay $30,000😢😢 idiots

[@P1no90]

Looks heavy. Not good for a vehicle!

[@kertahoon7328]

done

[@HolyOllie]

this is fake as hell bro. dont be so gullible

[@patrickmchargue7122]

Too large unsprung weight, and I would call out cooling an issue.

[@אלִיהו-ז8ס]

I hate electric vehicles.

[@МихаилПетров-о1л]

S или С

[@alexeyl22]

videos with no talking heads are the best. Save yourself time in your videos by not including mandatory talking head moment.

[@STYX-a-Lot]

LISTEN… that motor doesn’t have to have a gearbox for higher gear ratios… It just needs 3 layers of motors. All three are connected to the wheel for first gear… then, two are connected to the wheel, and two are connected to the frame for second gear… And finally, the innermost layer is connected to the frame, and the outer most was connected to the wheel… And the inner layer motor is not connected to anything. This would be third gear… All three of them launch off of each other so the final ratio is three times as fast. This approach doesn’t take up any more space than an occupies now… But it does increase complexity by having three separate thinner motors that launch off of each other. All that is needed for engagement is electric solenoids. This approach is literally supreme because there is no meshing of gears.