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Students Built World's Fastest Electric Monowheel

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Channel: Wonder World
Categories: Science   |   Technology  
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A small group of students from the Duke University in North Carolina USA, have built the Worlds Fastest Electric, Monowheel, called the EV360, specifically designed to exceed speeds of 70 mph, in preparation for setting a new Guinness World Record.

Now the team were all set to attempt the world record late 2020, they had approval from the Guinness World Record team to attempt it, and they only had to surpass the speed of 45 mph to beat it, but the virus lockdowns delayed the attempt.

But since the Monowheel is able to reach speeds of up to 72 mph, surpassing 45 mph for the world record, it will be all about the driver developing the skills to ride it that fast. As seen in the crash compilation, there is a lot more to it than riding fast in a straight line.

But since the bike is able to achieve the speeds necessary to beat the current record, its just a matter of time and practice to achieve it.

Thanks for watching.


Team Name: The Duke Monowheel Team
Core Team Members: Anuj Thakkar (Team Lead and Engineer), Carlo Lindner (Engineer), Ahmed Ahmed-Fouad (Engineer), Fran Romano (Lead Cinematographer), Joln von Plutzner (Engineer, former)

Vehicle Name: EV360
Motor: 11kW (14.75 hp) continuous, 23 kW (31 hp) peak
Battery: 72V 22Ah lithium polymer battery with 1.58 kWh capacity
Range: 9 miles (14.5 km); (built for speed, not distance)
Top speed: 70 mph (112 km/h); road tested at 31 mph (50 kmh) and soon to be improved


During our test runs, weve crashed the vehicle 15 times already (see our gnarly crash footage). Luckily, we walked away from all these crashes unharmed, but the vehicle has needed plenty of repairs. This shows how unstable a monowheel is, especially when decelerating from higher speeds. Learning to ride a monowheel at higher speeds is a long, and often painful process. Its nothing like riding a motorcycle and does not give the rider much control over the vehicle at all. Gentle inputs are key here: accelerating or decelerating too fast causes the frame to wildly rock back and forth. Similarly, trying to steer one way or another too quickly, or even just hitting a bump can cause the vehicle to start wobbling side to side, which is incredibly difficult to recover from. There is no quick and easy fix for this, other than hours upon hours of training.

Youll often see us crashing while decelerating at the end of our runs, and usually around 15 to 20 mph (24 to 32 kmh). This is a deadly combination for two reasons:
1. While decelerating, the monowheels center of gravity shifts backwards behind the wheels point of contact to the road. If the vehicle starts wobbling during this phase, the braking force at the point of contact with the road and the momentum carrying the center of gravity straight forward creates a torque that further worsens this wobble.
2. At this specific speed, the wheels own rotational frequency harmonically oscillates with its wobbling frequency, which magnifies the effects of the wobble. A lot of other monowheels experience a similar phenomenon right around these speeds, so we were expecting to encounter issues during these speeds.

These two effects are quite difficult to overcome when they are compounded like that. But again, because these effects are inherent results of a monowheels one-wheeled design, the solution is more practice.



Duke University -

Duke Monowheel Team Instagram -

Christopher Hoffmann youtube Channel -

RYNO Monowheel Bike -

First Monowheel -

Mono wheel stabilization article -


Wonder World Twitter -

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