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Top speed you can control on electric unicycle

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Top speed for me for now is 20km/h but would not like a EU that could do barely 20km/h do to the risk of a faceplant. What would be great would be an off road EU 18" with a 2000w motor with lots of torque that could easily take 120kg load up a 20 degree hill without losing speed or the motor overheating, and at the same time be able to go over road bumps without the risk of a faceplant.

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I will know what my safe speedlimit will be after i have my new KingSong 18 :)

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There is an old joke, "It's not the fall that hurts, it is the sudden stop at the end!" :D

If you "fall" from your EUC you are only falling a few feet. The majority of the energy is forward momentum. As @EUC Extreme says, it is possible to fall at higher speeds, IF you have the right protection and you just slide to a stop eventually. The problem is that most of us do not ride with enough protection to stop 40km/h worth of forward momentum!

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Unless you hit a tree head on , the 40 to 0 problem does not exist . It's going to be a slide and tumble . The distance to the ground does not change , so the face planting impact is exactly the same . A bigger slide/tumble to be sure . The Tour de France riders crash at 40 all the time and all they have is that helmet . We older circle surfers usually have at least the knees and hands protected as well . 

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On 3/7/2015 at 11:30 AM, EUC Extreme said:

Depends a lot on the size of the tire. I think the street with 14inch 30kmh is sufficient. 18inch 45kmh probably suffice.
But. For Extreme is being driven out of the street, maximum speed 18inch should at least be 80-100kmh.
When the time on the town, your speed is approximately 10-15kmh.
In fact, I would hope also that other among the people much higher rate of speed no one would use.

I fully agree, it's not the same Extreme were you need the much power the better and ride in town must be more slow. I consider if you are able to ride at 80Km/h you can slow down and drive at 15Km/h but if you need speed Why not have the oportunity to push your wheel until the limit? If you are responsible of the way you drive and you know the risks everywere... If you own a Lamborghini you are not driving at max speed everyday but you have the oportunity to feel the limit in a circuit or a controled place.

The other thing could be the size of the tire and the weigh of the wheel. For a comfortable ridding of a wheel at 80Km/h with a good range, which is the Wh needed? How can you manage the weight of that big batteries?

I'm very optimistic with the Graphene and the possibility to use it on a electric vehicles as Unicycles ;)

Edited by EnPagés

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I think that 50 km/h would be a good limit for the max speed of a regular EUC. This wouldn't necessarily be a safe speed, but it would be a speed where the rider would still be in control and capable of reacting when everything is clear. Anything faster than 70 km/h and the EUC had better be strapped on to the rider's feet and be equipped with suspension. Also, at any speed above 70km/h, the rider should be expected to wear a motorcycle bodysuit, helmet, gloves, etc.

Edited by WakefulTraveller

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8 hours ago, WakefulTraveller said:

I think that 50 km/h would be a good limit for the max speed of a regular EUC. This wouldn't necessarily be a safe speed, but it would be a speed where the rider would still be in control and capable of reacting when everything is clear. Anything faster than 70 km/h and the EUC had better be strapped on to the rider's feet and be equipped with suspension. Also, at any speed above 70km/h, the rider should be expected to wear a motorcycle bodysuit, helmet, gloves, etc.

 

are you kidding ? accidents at the rate inevitably lead to an injury.

I think 30km/h is a reasonable limit for max speed. everything above is only for 'professionals', not for 'normals' like us.

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This is kind of an old thread, but if it's still active I'd vote for 40kph. My current EUC is capable of 35kph and I ride certain sections of road/trail at that speed basically every time I get on it. And I'd go slightly faster on those sections if I could. Above 40kph is where I feel like things would get too dangerous for my tastes, but 35kph isn't that extreme of a speed.

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Personally I think 30 to 35kph is good as a max speed... But only if a EUC can be relied upon not to cut out unexpectedly at that speed, and properly employs tiltback and other measures.

Uphill and downhill riding at top speed (even if it is lower than 30-35kph) also still needs to be free of unexpected cut outs.

Stopping needs to be made as controlled as possible.

There will always be opportunity for human error when riding any kind of vehicle, and this is not preventable (and keeping riders from attempting to ride beyond where their skill and experience should limit them is also essentially not possible). But if we can eliminate unexpected catastrophic EUC behaviours, we will enter a great new time for everyone in this new industry.

I think we need to get to that point in the industry before going beyond speeds faster than 30-35kph.

Hopefully the top brands will lead the way in this regard.

Edited by LorenW

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Too late. There are numerous EUCs in the market that already go 30 to 35kph. (Which is admittedly the same speed as bikes and electric scooters like the EcoReco M5, which I also own). The major problem is that their behaviour has been at times unpredictable at that speed, with sudden shutdowns.

You can overlean on a bicycle (side to side) or take corners too quickly. Not everyone wears a helmet and protective gear. These are issues that will be present on any personal vehicle.

All of that being said, EUCs can be made safer than they currently are (no sudden shutdowns, better handling of temperature issues, safer low battery behavior, better handling of regenerative braking downhill with a full battery, better tilt back behavior, etc), and hopefully the trend in that direction will continue... ahead of the push for more speed.

 

 

Edited by LorenW

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