Everything you Know about Wheel Size is WRONG 

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Another flawless episode, from beginning to end!

Worth mentioning that stability is not directly related to wheel size. Instead it has to do with rotational mass which is only correlated to wheel size. Understanding that rotational mass is what matters for stability leads the viewer to understand many other important things. Like how rim weight like on the V13 affects things. And also leads to the knowledge that if you could add and remove weight on the spinning part of the wheel you would be able to change the stability vs responsiveness without needing a different wheel. There is also the unmentioned fact that a larger wheel leads to a smoother ride over alot of non-smooth ground, since the larger wheel size dips less deep into divots in the surface. This fact is most obvious if you look at a tiny wheel like on scooters. Large wheels also need to deform less on smooth ground because the arch that touches the ground is more parallel which leads to more surface touching the ground and therefor more grip, especially important offroad, in the wet, or when riding over metal. The larger surface touching the road also leads to the higher likelyhood that you ride over divots instead of partially go down into them leading to a smoother ride aswell. Also because of the larger surface touching the ground the tire itself requires the ground to "displace" more air when you hit the flat ground from a jump... leading to a lower chance of bottoming out the tire and hitting the rim when landing on flat surfaces (So doesn't help when hitting a stair edge for example). Which means you can ride at a lower PSI while retaining the same threshold to bottom out from jumps and other drop-downs, leading to a smoother ride since lower PSI allows the tire to deform to the roads uneven surface more. Edit: A larger wheel also moves the axle up which results in the force you apply while accelerating being farther from the pivot point and therefor giving you more leverage, making it easier to pivot the EUC forward reletive to the wheel which is what you do to accelerate. Same applies to braking aswell. Imo a large wheel diameter with a minimized rotational mass and the ability to add rotational weight optionally if you want to have a more stable ride would be ideal since you get the best of all worlds. I do wish rotational mass was a part of the spec sheet for these EUCs.

I learned all about stability when riding in the night on a mountain road and I came upon a hairpin turn and it was so dark my headlamp was not able to show me where I was going. The moment I lost track of where I was going the wheel became unstable like I was a total beginner! I almost crashed! Even though I had plenty of room to roll. I immediately clicked on my handheld spotlight and as soon as my brain detected where I needed to go the wheel became stable again. That was a lesson to me as to how much you do to keep your wheel stable even though you don't think about it anymore.

Brilliant episode!! You managed to describe the nuances of wheel size equated to the style and speed of the ride. Bravo!

Being on euc feels like being at the top of a mountain on skis. Any direction I point is downhill. Our thought patterns certainly are linked to our sensory inputs. Consider colloquialisms such as “I see what you’re saying” or “I won’t stand for that”. Those are both abstract metaphors derived from physical experiences.

Love your videos and your philosophy on EUCs. Just ordered the Patton for my first wheel and am excited for it to show up. Not sure what it is about EUC but they have captured my interest in a way nothing else has in a long time. Hoping it will be as life changingly fun as everyone says.

I'll share my experience with the EUC search for stability. I started out in August of 2022 with the V11 (18" I think). I am 5'-10" weigh 180 lbs. It was difficult at the beginning, and it felt like a ton. But, looking back, it was an excellent wheel to learn on. It had perfect speed max for a beginner and great suspension- ok stability. It was the search for the right pads that I was after and the pedal adjustment and height, so I Impulsively acquired the Kingsong S22 (20" wheel). Stability excellent and good teacher for control. It felt like a monster, and it was wide girth, and I was actually very scared of it, but it taught me everything about taking on more euc weight and controlling the ride in many different positions, most importantly, it introduced me to off-road. I then decided to add the Begode Master (20" Wheel) to the fleet for more speed- it's like I was in stability heaven, but that didn't last longer than a few months... burned mother board and suspension very weak, still out of order. I felt something was there in the master, so I pursued that hunch and bought the Master Pro (22" WHEEL) THE BEST WHEEL for Stability, and the my dreams came true, so I had to lessen time for off-roading and stairs, jumps etc... but POWER and stability was MET! Then I was introduced to the Extreme Bull PRO- (20" wheel) - WOW!!!!! Stability Extreme. The master pro and the extreme are two different rides< but I tend to agree with Hsiang; Wheel Size is not the secret sauce for stability and control, neither is weight, size of euc or pads. They do help tremendously(Especially Pads-haha), but the secret sauce is definitely becoming one with the wheel, and for that you just have to search for the right one that fits your comfort zone and thinking abilities. .

Stability, yup. My first wheel was 14". I kissed the asphalt about once every 3 weeks. I miss the agility, but I crash much less frequently. I don't think I want a 20" wheel. It lacks the maneuverability i crave.

Sherman suspension with inmotion manufacturing and solid state batteries. My dream wheel.

On my first wheel, I thought that I would love a more stable wheel, but I now know that there wasn't a stability problem with the wheel - it was the rider! My first wheel was 18", when I bought a 16" wheel, I thought it was a lot less stable, after a few hundred kms of riding - it is plenty stable enough. My Sherman S is relaxing to ride because I don't need to think as quickly to correct any instabilities, but I'm sure someone new to riding would initially have trouble with balance and stability.

This is one of your best videos yet !!! The break down of the video gamer mind meld with their controls & it’s relationship with reaction time… and then the Linebacker vs RunningBack --brilliance shines through when you love something --Props

Amazing EUC content as always! Setting the bar high.

First wheel ever, my kingsong 14D. I love riding this wheel. First off relatively inexpensive as far as this hobby goes, and I'm still brand new to this, just eclipsed 100 miles recently. I feel like I have a lot to learn and still I'm not ready for faster just yet but when I ride it feels like I don't want to stop😅

Not just wheel size but weight. 18" V11 is great on roads but I often find myself missing the much lighter 16" V8 because it's easier to weave through pedestrians on the sidewalk and simply just more manageable when running errands.

I enjoyed your video! Your thoughts on how wheel size and speed change the frequency of input really made sense, and the external sources used (such as the book about human augmentation's effects on how we think) were really nice to have. It wasn't just your opinion, but took on almost an academic aspect. ^_^ I am now even more interested in how riding my 16" V12 HT has shaped my thinking since last October. I suspect it has made me much more open to experiences and exploratory in nature, not to mention being a helpful outlet.

Very good analysis of what is going on ! More of this please.

I deff credit your videos for helping me get into this hobby. Your videos are fire my dude! I came from E-skate and watching your vids had me end up buying a V11. Now I have an EX30 and couldn't be happier.

Damn! The only EUC master that brings philosophy into the picture! Kudos! 👍

I love how you managed to throw in the obligatory angle of Sparkles in this informative video. Thank you for all that you do, Hsiang!

This is exactly why I subscribed. So informative. Thanks brother! Ride on! Kingsong S22 Pro 117 miles… still working out the speed wobbles.

I’ve just gone from a kingsong 16x the begode EX20. The weight felt hard to handle at first but once i put a street tire on its surprisingly nimble

Started 3wk ago on V12HT and I'm absolutely loving it. Thanks for the presentation; lots of great points made.

Awesome video, my first wheel is the ex30. Took me about 4 hours over 2 days to learn and its an amazing feeling.

No doubt jumping on the T4 after some high speed runs on the ex30, the smaller T4 feels wonky twitchy & wobbly. However it also feels so much nimbler agile & most of all, light & tossable. To me, the T4 is awesome on gnarly technical mtb single tracks (& subsequently slow high pedestrain traffic areas) while the much heavier but way faster (& much easier to go faster) ex30. I'm unsure what this vid is trying to say but for sure, I'd want a 16"er for pure offroad fun & a 18-20" for everything else. & yes, the 18" ex is much more stable at anything >40mph

Today I rode my V12HT 60km/h and few km later just 20km/h thru some offorad in the forest. I it so amazing how stable is that wheel in high speeds and how nimble it is in low speed. I love it and I have no need to switch to bigger wheel.

Very insightful keep up the episodes

Super video really, as always Hsiang by the way.👍 I use 4 different wheels, my starting wheel was a KS 16 X and I will not part for anything in the world. Today, my wheels are all part of my body, whether it’s the EX.N, the RS 19, or the KS S18, I don’t know if they’re there, they’ve just become an extension of my legs. But the KS 16 X has unparalleled agility and responsiveness, the torque is immediate and even if the speed is lower the sensations are greater. I will say that weight is also part of the equation, for this I prefer to stay on "light" wheels because less they are present in terms of size and weight, the more quickly and completely your brain assimilates them to a part of your body, the more intuitive everything becomes. No other vehicle has ever brought me so much pleasure, that of the total freedom of movement without anything coming between my brain and the ground, like a magic flying carpet! 👍

I used to think in a somewhat similar way to some of the comments in this video. I now understand that there is a lot more going on. Prior to suspension wheels coming out, all wheels were extremely similar. You got a bigger diameter wheel, you also got more weight but everything else grew a little as well. Everything was a similar ratio to the wheel size. Pedal height, pedal size, case size, weight of the machine and contact patch of the tire all grew in a relatively even ratios. You bought a Monster v1 through v3 and you had a big wheel that reacted fairly slowly and offered less agile, more stable ride experience. You bought an Mten 3 and you got a tiny little wheel the darted quickly in any direction that pointed it, RIGHT NOW!. Small wheels required much quicker and smaller inputs to remain stable. This fact is what brings me to offer complete disagreement with one of the statements made during this video, smaller wheels are easier to learn on. I found this to be completely inaccurate. The slower reacting, larger and more stable wheels are actually easier for some people to learn on as long as the wheel size and weight aren't too big for the individual learning. In other words, in my experience, small wheels for small people and big wheels for big people return the best learning results. Small wheels for large people and big wheels for small people make the learning curve extremely difficult to handle. This all brings me to the next evolution in EUC design, suspension. I moved from a Monster V2 to an EX20. The EX20 is actually a smaller tire size in diameter. However, this wheel is so much larger and heavier that is actually acts like it's a bigger tire size in relation to the non-suspension wheels. It can be very resistant to sharp turns and quick direction changes. In fact, going back to the Monster, it now feels very small and agile in comparison. One important thing to note is that the tire width is similar if not slightly larger. Ultimately, unless you are running a bit higher tire pressure, the tire contact patches are very much alike. What this brings me to is that there are multiple metrics at work when we discuss stability. Tire size is only one of the factors. Contact patch size which is a function of tire size, tire pressure and rider weight. Size and weight of the machine itself. Pedal height and machine width. All of these things work together to determine overall stability vs agility of a wheel.

I learned this lesson after getting my V12. Coming from an 18" wheel and hearing how larger diameter wheels were commonly considered "more stable" initially caused me to regret getting the V12 when I was not immediately comfortable riding it. However, after several months I can now say I love how my V12 rides and I no longer feel any difference in stability. That being said, I was able to jump on a Master and feel comfortable on it much more quickly. So I think there's still a stepper learning curve with smaller wheels for reaching that feeling of "oneness" with the wheel.

The street fighter analogy. *Perfect* I chose the The Sherman-s for the range and comfort, but at times I prefer to play Street Fighter Turbo. I may need a Patton too 😅

From 05:30… this description of wheel riding is spot on … I feel like my learning curve would have been lessened if I’d heard this exact explanation before I started out..🙏

Great video and great topic . I’d love to see a video that talks about old age of an EUC . Signs it’s time for new tire or how to know the battery isn’t working any more. When is time to finally say goodbye forever? And what to actually do with a wheel that is too old to ride . For example, I have an ex.n with 5000 miles , a new tire and bearings but I think I’m noticing a loss in power . I’m not sure what to do

Every episode is a treat… Popcorn time!!

Haha 😂 I love the in depth iron man suit analysis 🧐 great job as always! Come to Portland sometime soon!

I like your choice of words when describing the sensation of controlling an EUC.

Great content :)

6:22 OMG is that Spinkles? I’ve heard so much about her. Can’t wait to destroy her in traffic when I visit NYC this summer. ❤

What are those kicks you are wearing? The ones with orange chevrons down the heels

Best video ever in this channel

Very informative ❤

so well said. exactly right to my experience as well!

AWESOME insight!!!!!

You'll be amazed how much of a difference an extra 2inches makes

Great topic. I personally lean more to 16” wheels for the agility. I find myself able to adjust quickly to those "oh shit" moments and worst case emergency eject, since it is smaller height wise. I never find stability a issue, but like you said I’m acclimated to my wheel. V12 & Tesla V2.

Starting with 13" (AIRWHEEL X3) went over 15, 18 testing 12, ending with 18" (KS18L¨and in the meantime enjoy the IPS i5 same as you. Thanks for great video

As a pretty new rider, less than 50 miles so far. I definitely disagree on smaller wheels being easier to learn on. When I was learning on my KS18XL, responsiveness had 0 impact on learning to ride as it was already set to soft mode by default. What took time was unlearning certain natural reactions, like trying to counter lean when starting to fall over instead of using my legs to pivot the wheel in that direction. The larger tire worked way better in the less even sidewalks and cracked school blacktop I was learning on. It took about 3.5 miles over 3 hours spread over three days to really have it click. First day was just fighting my bodies reactions and responses causing lots of step downs, plenty of riding slowly next to a chainlink fence basically using my hand to bounce off it and being glad I had shinguards to tank the pedal hits, was holding way too tight with my feet early on with my ankles resting on the EUC. The next time a couple days later I could actually go a couple houses before I started wobbling to much mostly because I was still holding to tight. But as long as I had something to hold on to get started and a person to lean on, I was able to figure out basic stuff, though still couldn't mount up without something to hold onto to get my feet positioned right. Third day I took it to an elementary school and was able to go straight next to the chainlink fence without any issues if I wasn't trying to turn and had no issues decelerating. Then I basically spent half an hour just riding back and fourth between basketball poles. But doing tight circles around the poles made the twist rather than lean at low speed turning click in my head. I ended up doing 22 miles of riding that day, which was yesterday at a nearby park on paved bike trails with no real wipeouts but a couple step offs where other people were on the path and it was tight. Though my legs are tired enough to take a day off now. I am keeping the pedal tiltback at 18mph, with alarm at 14mph while I am still getting the feel for it and muscle memory. Though I was learning on it with just a neoprene sleeve on it to keep it from getting too messed up while I was learning/repeatedly bailing. Looking forward to getting some of the foam Clark Pads for the extra leverage when breaking and accelerating. Learning with a naked EUC with no power pads definitely forces you to focus more on fundamentals since going fast takes alot out of the stabilizer muscles in your feet. Glad I padded up though, helped me think a lot less about getting hurt while learning to do a forward trust fall with a machine.

Thank you for very interesting video with many interesting ideas. They are very useful for me now. I have Kingsong KS-14S as my first EUC. As recommended I have bought this beginners wheel and I just love it!!!!!! But after 1500 km I just know that I need faster one with suspension. Almost whole my ride I am more braking than enjoying the ride. I am already capable more than this small toy is offering and it is beeping during straight way but also during cornering or practising some tricks. So my dream was from the beginning and maybe still is the Kingsong KS-S22. And if I am able, I would buy it this year and start to fly little faster and safer with the suspension. When the moment comes I check the offer of EUC's, but for sure something like this will be my next choice.

i learned to ride euc on the inmotionv12 ht and hs. I'm looking for a good suspension wheel and thinking of getting the COMMANDER PRO 134V. any other suggestions? I like to hit small jumps and have fun cruising on and off road.

Hsiang. Thanks for this vid. All of the info is really good. I just recently purchased a Nikola 2700 as my fourth wheel. My original wheel was a Ninebot One Z10. It was really really hard to turn and prone to wobble which I hated and triggered me to sell the wheel. I thought these issues were mainly due to the width of the tire on the Z10. But now I have the exact same issues with the Nikola 2700. It turns out that smaller wheel diameters don't allow me enough leverage to turn at speed. I am far more agile and much faster on 18+ inch wheels. I already sold my v11f and now am looking to sell both my 18xl and Nikola 2700 to fund a purchase of a newer suspension wheel (v13, Master, s22 pro). I would really like to know if you experience the difficulty of turning at high speeds with 16" wheels?

Are those Oakley glasses? I was reading about Prizm road and thinking about getting some. Did you get the prizm road lenses? How do you like them?

this makes so much sense.

This is the video I will show to people who are struggling to understand EUC.

@Hsiang you do some great and informative videos that are edited pretty well, but you couldn't buy the stock image of the pilots?

your videos are death defying. I enjoy them immensely. Have you ever been hit by a car door??

love you videos

Hsiang, love your videos. Recently, I saw a video (somewhere) that some "16 inch" wheels actually measure out as 18". While not alone, one of them is the V14. Does this make sense. What might this mean? Thanks.

as I sit here waiting for my V5F o come in I dont regret my decision because A. its what was within budget given ZERO EUC community where I live. and B it beats walking. once I get going I plan on getting a Patton, or Master as my daily.

Hi Sean, another thought-provoking great video. I am in a dilemma between those two size wheels to try to determine what my next wheel is to buy. All else being equal same battery size, same motor size, same weight, same voltage, etc, it's been said that an18-inch wheel will get better range than a 16-inch wheel because it has to turn less times to reach the same distance. What do you think?

Begode Master, Begode Master Pro and just received my EX30. They all have their moments where they are more adapted to do a specific type of riding. The smoothness of the Master Pro is really just amazing.... But like you said it's really not as zippy than my Master for example.

In your opinion. What’s the longest range EUC currently?

Thanks for the lowdown

I am about to buy my first euc and im getting a s18 molicel. What is your opinion on the s18 ?

What tire pressure do you like to run the Patton on street with the off-road tire?

I was looking at buying one of these for personal use, but I don’t wanna have to upgrade later so I was looking at buying a more expensive one initially, but was unsure exactly what I should do. What are your thoughts?

I ride a veteran Sherman max. 75lbs . 18 “ wheel. Have you tried it.? What do you think about it’s performance?

@Hsiang what's that energetic metal piece at 6:46 ?

0:35 2 inches is a big deal...contextually 😅

Do you still recommend the IPS I5 as the best beginner EUC? Love your videos. Ty

A larger wheel requires more torque, but not more power to achieve the same performance as a smaller wheel (it will need more torque but less rpm to produce the same power). If riding in a straight line on a reasonably smooth surface, at sufficient speed an EUC is self-stable, self-correcting (due to camber effect of tire), eliminating the need for the rider to make any balance corrections (absent external forces like a gusting crosswind). At higher speeds, the self-correcting response may end up getting into an over-correcting cycle, resulting in wobbles. A less responsive tire, like a knobby tire or a more narrow tire, is less prone to wobbles. Angular inertia and momentum can dampen out a tendency to wobble. As for motorcycles, the same steering geometry that turns the front tire into direction of lean will also cause a bike to auto-lean into a gusting crosswind. The sideways force steers the front tire downwind from under the center of mass, leaning the bike into the wind. There's a limit to this, and a very strong crosswind will require additional rider input to prevent the bike from turning downwind.

Waiting for Seattle video edit!!!!!!!

I want to buy the red helmet you always wear with the metal chin guard. What's it called and where can i find it?

This was a MUCH deeper analysis than I was expecting 😅 very glad to hear this kind of review. This is how my brain works as well, hahaha! Also, the footage and camera quality is amazing. Great work 🎉🎉

I've had my wheel for a couple of weeks now and can't seem to get to where I can balance... still plugging away, but, it is a seemingly huge hump to get over.. Really need this to be fun. I purchased the KingSong S18 for my first wheel.. The video's are excellent. I just need to get the muscle memory and techniques down... incredible how it burns calories to ride...

what about the wind does a 16 inch vs 22inch like V13 handle the wind better?

Hi. what helmet do you use? Thank you

I take it you did watch it when it came out then--- Ironman Because we didnt have EuC's in '09. Nice video

Got the T4. So far I am happy with my wheel! 1st wheel. Over 400 miles so far. I'm in a small town with a lot of hills. Didn't need speakers. And any extra electronics to go bad. (Inmotion) the only think is it would be nice to ride others so I can compare. Dunno when I will get another wheel. Really looking at the mten 4. Just cause u can throw it in a shopping cart. U know!? Lol!😂 it's tough to justify spending money on a wheel seeing how all wheels seem like they won't last more than one season with out replacing something. That's not a perishable item. Whether it's screws that come loose overtime, or crappy bearings from the manufacturer. Or linkage that is crap. Maybe it would be more justifiable if the retailers would include a 1 time free mail back rebate for repairs with warranty. Expecting users to work on there wheel is a bit off putting. Like if my car goes down, I can take it to a mechanic. Not so much for euc. I feel like i have to find a local mechanic that will be willing to work on the wheel if possible. They prollybwont tho. BUT overall, you can't replace the enjoyment you get from euc even if there are a lot of stipulations to having a long running euc!

I suppose they keep them small to maintain wheel speed mind you the best off road motorcycles use 21 inch or 22 inch front tires the bigger the wheel the easier they keep rolling over obstacles in your path it would be great if they also utilize a 4.5 inch or 5 inch Fat tire unicycle to increase suspension softness

If the community was bigger you would have 1 mln+ subscribers. Follower from the beginning here from the Netherlands. Z10 time!!

How fast do you normally go?

After some v5 (14x2.125") i ride v11 (18x3") and i'm _not_ longing for more nimbleness. In fact, I'd like a v11 with 20".. Or S22 if it was somewhat slimmer. And i only ride sidewalks.

Hello budy, how are you. Would you point me to a site that sells used unicycles in the US?

I'm waiting for the Ironman version, BTW that would be a cool name of a EUS name brand

What about about center of gravity? Thanks for all of your efforts

Where did you get your helmet

.... lol,, this episode should b called... 'The Philosophers Wheel', anyway, I thought u might like this poem I wrote while waiting for my V11 to arrive, ----EUC Dreams---- EUC Dreaming, Waiting for the day, Say goodbye to boredom, Freedom's coming my way! Floating above the World, Gliding in the clouds, Skipping on the sidewalk, in + out of crowds. I wake to hear the van door open, My senses connected by a livewire, YES YES YES,,, I LEAP INTO THE FIRE!!!!

this is completely correct

I don't fully agree. Feel is not everything. Despite the fact that you can adapt to a certain extent to a geometry and learn the behaviour, physics still exists... Systems stability is an objective concept that can be discribed with numerical values.

bruh...im just tryna figure out if I can ride ANY wheel in NY without a fine or confiscation of euc....I might drop my interest if its gonna be illegal in the best city to ride in

Surprised people don’t mod frame height to accommodate larger diameter and/or wider tire

Can somebody say Why Hsiang riding with un protected eyes on high speeds. He is a superman? He never got no mote in the eye ?

18...18.and 18 inch wheel only :)

My only EUCs were a 14" and a 22" lol

Check out those sweet shoes.

Bro got me wanting to spend my next check on an euc...

That was a lot of words to say that the Nikola is the greatest wheel ever made.

No wait..... was that selfie stick coming out of your butt? nooooooo... just no........😁😆😆😆😆🤣🤣🤣🤣

What capabilities do the next EUC's have in-store? Will Veteran get a tax-credit certification like Tesla, Ford and GM? Will they step-up their game?

My first real unicycle!(first one was a cheap plastic one as a kid ru-vid.comUgkx4e2fa6x27dF7shCelntq0ZIKt4N0jELI I never learned to ride)So, this is a true learner, and for a C note, exactly what was needed. After a few weeks, I'm able to easily ride up and down the street. The Good: Solid frame. Has absorbed numerous spills through learning and still solid. Look - great looks, after 6 weeks of bashing Weight - it's really all tire, but as I fall I can easily grab the seat so it doesn't slam the ground. Size - Very adjustable. I'm 6', 33" inseam. I put it mostly up, but could go a bit higher if I needed to. The Bad: Not sure if it's out of the norm, but seat got scraped up quickly. Pedals - they are a bit uncomfortable and I can't get the right feel on my feet. But, they are solid and haven't been damaged at all as I've seen in reviews on other cycle's.- To address one comment about the seat connection not straight. Huh? Seat is on a round pole, you just turn it and it's straight. Either of the bad I expected to replace once I improved. I'd recommend to anyone else in the learning phase.