EUC: Electric Unicycles

In short: fuck electric scooters, electric bikes as well as any other similar things that are electric but not an EUC, nor a car. Maybe unless you need to pull a trailer:

Cargo bike

Ninebot One S2

letoram said on #lobsters that electric unicycles are fun, and that they feel like you’re about to fall at any time, which got me curious and deserved some experimentation. For my first wheel, I had no idea what to look for and just bought the S2 since it was cheap-ish, and no one told me not to.

It took a while to get the gist of the controls, but on my second day I could already drive around somewhat well and…​ pinched my inner tube when hitting the border of a pavement. Then I had to order some tools, dismantle the whole wheel, and learn how to repair bike tyres on hard mode. (I assembled it wrong the first time, pinching a cable--just fixing this took me about an hour.)

Very shortly this wheel has become too underpowered for me, even though I’m fairly light and the motor can take me up some surprisingly steep slopes, if barely.


  • The shell is indestructible.

  • Relatively light and easy to travel with. Carry it by its handle, or throw it under your trolley (which then becomes hard to manoeuvre).

  • A fairly cheap option for when you’re not sure about EUCs, though irrational if there’s any chance at all you might have a use for it. I’d get a used one for cheaper if I had the choice and option. Or an upgrade in a similar weight category, such as InMotion V8F.

  • The pedals are low, making this vehicle relatively easy to get on.

  • Underpowered, hence you can just walk away from many incidents rather than fall flat on your face. You don’t really need a full face helmet here.


  • Needs a phone to activate, and to change the few settings it has.

  • Annoying, loud beeping that cannot be disabled. Often, when it falls, it just won’t stop until you turn it off and on again. It goes without saying that this attracts a lot of undesired attention.

  • The shell hurts to lean against, e.g. when driving on one leg only. It can be alleviated with a layer of rubber. Simply wearing shin guards helps a lot, too.

  • There’s nothing at all to help you keep your feet on the pedals if you jump down with it, thus you may easily shift position and even fall forward. You can find attachments that fix this issue, which is common to most wheels.

  • Underpowered, hence boring. Neither is it good for the pavement due to being rather fast, nor for the road due to being rather slow.

  • No headlight for when it’s dark outside. Holding a flashlight in hand is heavily suboptimal, if only because a much lower position is necessary to see irregularities well.

If you need a charging/storage stand, cut the cardboard box it came in to fit just the lower block of polystyrene foam. Works pretty well, just beware of free spinning, that’ll do some damage to it.

Ninebot One S2 stand


In a few days of actual practice, you’ll be almost literally flying around with ease. It feels amazing. It can also be a decent leg exercise, especially at the beginning, as try to use the wrong muscles. Despite my fears, my sometimes aching knees don’t seem to mind, almost to the contrary. But feet like to hurt, and you can easily get cramps. Good shoes help.

Learn on a hard surface, and remember that it’s more stable when it’s moving. It helped me to imagine that I’m getting on a skateboard.


It doesn’t take much effort to learn to drive on one leg only--you do this anyway when getting on, so just keep prolonging the duration--it’s just physically demanding, and hurts after a while.

Jumping down curbs is fairly safe but requires some practice. See also the list of S2 negatives above. Shallow and sloped curbs can more or less be simply driven through. Ideally, find a nearby skate park to train your balance. I was quite surprised by the slopes I could easily go up and down.

Driving backwards seems doable, but my progress with it has been slow so far.

Important takeaways

  • Always check tyre pressure when unsure. Extracting the inner tube is usually a very, very laborious process. Consider carrying a tube sealant when going off-road.

  • Make sure to wear protection if you suspect that you might fall. Ideally also learn how to fall so that harm is minimized, e.g., by twisting your body sideways when falling backwards, or not stretching out your hands in front of you when falling forwards (you want to turn that into a roll, ideally).

  • Be extremely careful when driving through bus stops, you may easily run into people, especially with those stepping out of any bus. Try to avoid busy footpaths at all, if possible.

  • Excess acceleration and breaking cycles lead to overheating.

Upgrading to InMotion V11

As a follow-up machine, I first considered the powerful and sturdily built Veteran Sherman, but eventually fell in love in the idea of a city-friendly commuter wheel that is InMotion V11. Seeing as a V11F was unlikely to appear anytime soon, and that I felt ready to drive faster than 24 kph, I bit the bullet, ordering this pricey monster of a wheel.

At 27 kilograms, just extracting it from its box was quite difficult. All of its shock absorbers were empty, so I had to pump them up, disassembling the shell in the process. The attached air pump could be better, but it does its job. Given how little I weigh, it was slightly easier for me to pressurize the bottom shocks accurately with a regular, low-pressure pump. It couldn’t make a good seal with the tiny upper chambers, however.

The riding experience is very different. Whereas the 14" S2 is nimble, this 18" tank just wants to go straight ahead, and pedals are positioned so high that getting on requires a lot of getting used to (I still can’t do it reliably). Accelerating or decelerating is by no means easy either, as you need to pinch the wheel between your legs for leverage and put in considerable effort--otherwise you simply won’t extract the full power. It seems that I’ll have to install some power pads, sooner or later.

Driving at night

Overall, the V11 simply isn’t made for the pavement. Which leaves me with two other options: trail paths, and public roads. Since I strongly prefer concrete over nature (yuck, spider webs and stones), and don’t feel comfortable in traffic yet, I went for exercising the ridiculous range of my device on the road, at night.


Which turns out to be great. With virtually no cars around, I rarely need to stop to give way, and I can afford to drive in the centre of the lane most of the time. In a short while, I ended up increasing the wheel’s speed warning to around 45 kph, often getting close to that speed around town--and without fearing for my life. The air suspension takes care of potholes and bumps rather well. When I get the occasional wobbles, I slow down, shift my position, maybe carve for a bit, and it tends to go away. Interestingly enough, I only get sore groin, though there’s certainly some overall leg fatigue, too. Generally speaking, I have a ball.

Okay, I admit there was an accident where I ended up running right into a random, unexpected kerb. Luckily, I could simply switch to walking at that time, and the wheel bounced off into grass. I’ve learnt to always look ahead, as well as to not blindly trust unknown paths.[1]

I’ve also realized whom those ‘rut warning’ roadsigns are for--some paths can be quite dangerous in this regard. You don’t want to have anyone overtaking you just as you’re trying to avoid a different kind of disaster, so you need to recognize ruts from a distance, and carefully drive around them without suddenly changing direction. Or take the whole lane for yourself, and go fast enough to not be overly annoying. Or have a thick skin, whatever.


Finally discovering where EUCs shine, I started looking for more distant targets. Only to find that I could barely see that far, because my V11 didn’t shine enough. It isn’t just about unlit intercity roads--you can’t even see where you’re turning with these vehicles, seeing as they beam in the wrong direction entirely for a moment.

Fortunately, I’m a double Convoy S2+ owner, which can be had on Aliexpress. My summary is:

  • Cree XP-L HI might have higher-quality light and better efficiency, but it’s way too focused. In simpler words, you won’t see shit. It’s also too happy to limit power.

  • Luminus SST40 will eat through your cells like there’s no tomorrow, but it makes for a great high beam to have at hand. Just remember to carry back-up 18650s (or whatever size have you, mine are actually 16.5 × 65).

In either case, I have found that the fewer modes it has, the better. Otherwise you end up having to cycle through bullshit. Biscotti’s ‘config mode’ is similarly a nuisance, since it’s entered way too easily. I usually don’t have any time to think about such nonsense.

I’ll update this page as I gain more experience.

1. Punny, isn’t it. I was supposed to see it in front of me, but I actually trusted it as if I were blind…​ alright, never mind.


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