Cutoff strikes fear even into the most advanced riders.

What an EUC Cutoff is and how to prevent it

In the world of electric unicycles (EUCs), the term „cutoff" refers to a situation where the EUC loses the ability to keep its balance and stay upright.

What leads to a cutoff and how do you prevent it?

Understanding the causes of a cutoff is essential for the safe operation of an EUC.

Main causes of a cutoff

• Overloading the unicycle
  • exceeding the unicycle's maximum speed
  • accelerating too quickly (leaning too much) on the unicycle
    • due to not understanding the machine's maximum limits
    • with a flat battery
    • with a cold battery
    • when exceeding the device's maximum weight limit
  • riding up a steep slope for a longer time, which causes the mainboard to overheat and fail
• riding in the rain. Water ingress damages the mainboard
• „jumping" the wheel and leaving it hanging in the air too long
• an impact to the wheel, which causes a wire connection to come loose
• going down stairs too fast, so the wheel has little contact with the steps and spins too quickly
• Mechanical failure of the main components

With the exception of the last scenario, which is very rare and hard to predict, most situations are created by users and can be avoided by adjusting riding behaviour and taking better care of the device.

More than 90% of cutoffs and the falls that follow are caused by rider error. Try to understand the limits and specifics of riding a unicycle, and above all the limits of your machine. Never ignore it when the unicycle communicates with you - tiltbacks, beeping, and above all the simple feeling that it just doesn't want to anymore.

Ways to prevent a cutoff

• watch out for warning beeps, pay special attention in noisy environments
• regularly check the battery level and your riding speed
• pay attention to tiltbacks, which are designed to signal the user to slow down or recharge
• charge the wheel sufficiently before a long ride
• avoid riding in the rain and other adverse weather conditions
• avoid straining the wheel with constant and excessive speed, twisting and jumping
• regularly carry out an MOT on your wheel

Try to listen to your unicycle, take care of it, and the wheel will take care of you.

The electric unicycle is a brilliant machine in itself; the main problem with the unicycle, as with everything, is the human factor.

It's suitable for riding on the pavement, the cycle path and the road alike.

The electric unicycle on the pavement

• A rider on an electric unicycle takes up as much space as a pedestrian. The rider has the unicycle between their legs and takes up sideways space according to the width of their shoulders and behind. Forwards and backwards a unicyclist takes up roughly the same space as a pedestrian moving their legs. The only difference is that a unicyclist is a bit taller (and therefore has a better overview than a pedestrian).
• A unicyclist can manoeuvre incredibly well, can weave, turn on the spot, etc.
• A unicyclist can stop for a moment and set off again (without taking a foot off the unicycle).
• For a unicyclist, accelerating and slowing down is no problem, it's fun for them. A cyclist tries not to slow down, because it costs them a lot of physical energy to get going again. A car or motorbike wears out its brake pads when braking, and setting off costs quite a bit of petrol and diesel = it costs money. For a unicyclist, braking and setting off cost a little energy = range; financially it's an absolute minimum, unlike a combustion engine and a machine weighing, say, 2.5 tonnes.
• Of course, a unicyclist on the pavement must be extremely careful and move at a pedestrian's pace.
• Of course it's more sensible to use the pavement only when there's a serious reason.

The electric unicycle on the cycle path

• The unicycle takes up an absolute minimum of space, unlike roller skates etc.
• For a unicyclist it's pleasant and natural to move at a bicycle's pace.

The electric unicycle on the road

• Even weaker unicycles can move at a bicycle's pace, so a unicyclist on the road should have the same rights as a cyclist.
• Powerful electric unicycles can move around the city at the same speed as scooters, motorbikes or cars.
• Unicycles don't pollute the air and take up an absolute minimum of space; from this it follows that for the future of our cities (after walking and public transport, of course) they are the most suitable of all individual means of transport (taking into account, of course, the hilliness of Czech cities = in many cities the bicycle is, because of the hills, mainly a means of transport for athletes and not for the general public).

Rules for riding an electric unicycle

---

The rules are rational rules based on the other road-traffic rules and decent behaviour.

The most basic rule: do not endanger

Rules for riding on the pavement

---

In short, a rider on an electric unicycle should behave on the pavement like a pedestrian.

On the pavement it's absolutely unacceptable for a unicycle rider not to follow the rule for motor vehicles in a pedestrian zone: "In a pedestrian zone the driver may travel at a speed of no more than 20 km/h. In doing so they must show increased consideration for pedestrians, whom they must not endanger; if necessary they must stop the vehicle." and to move at a speed greater than 20 km/h. (These are Czech road rules.)

Rules for riding in a pedestrian zone

---

In short, a rider on an electric unicycle should behave in a pedestrian zone like a pedestrian.

In a pedestrian zone it's unacceptable for a unicycle rider not to follow the rule for motor vehicles: "In a pedestrian zone the driver may travel at a speed of no more than 20 km/h. In doing so they must show increased consideration for pedestrians, whom they must not endanger; if necessary they must stop the vehicle." and to move at a speed greater than 20 km/h. (These are Czech road rules.)

Rules for riding on a cycle path

---

In short, a rider on an electric unicycle should behave on a cycle path like a cyclist.

Rules for riding on the road

---

In short, a rider on an electric unicycle should behave on the road like a scooter or motorbike and follow the road-traffic rules.

Comparison of Samsung 50E vs 50S batteries

Battery parameters

Test: