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About Ronko

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  1. @Lucas Alexander Oliver sometimes this can happen if the pedal mount/chassis is loose on the axle. Therefore there could be play between the axle and the rest of the EUC (has happened to me before). If the motor is applying a constant torque in one direction this won't be apparent, as soon as you hit a bump it will apply torque in the opposite direction and try to stabilize you, but because of the play in the axle you will start getting oscillation while it tries to find a stable point again. Best way to diagnose if this is the problem: Stand still on the EUC while holding on to a wall, and try accelerating forward and backwards on the spot repeatedly, and see if you can feel any play between the axle and the pedal mount (it should be quite obvious if something is not right). If that's the problem, then you need to take the casing off and tighten it back up.
  2. Yes, if you reduce frontal are you will halve the drag force. But you would still have 50kg acting against you while crouching down... And if you suddenly stand up you will be blown away! From an electronics perspective, there is no maximum speed assuming you choose the right components. The motor you linked will do 960rpm with a 96V supply and 20kW continuous, so the main factors affecting the top speed you can achieve are: Tyre diameter (the bigger the diameter the faster you are travelling for a given rpm) Drag and rolling resistance (at your desired top speed, 20kW needs to be enough to overcome the forces exerted by these) Motor controller and battery pack (ensuring they can provide 20kW continuosly)
  3. Is there a way of getting the raw data out rather than just a graph? I am interested in getting a log of speed vs current and voltage.
  4. The main limitations to speed as with any vehicle is the drag force which you need to overcome. So doing some basic calculations (ignoring rolling resistance), a rider of average height standing upright has a coefficient of drag of 1.2 (and a frontal/reference area of 0.72m). Travelling at 100mph the drag force acting against the rider will be 106kg (and the EUC would require 46.5kW to push through this). So 100mph seems very unfeasible... Calculating for different speeds: 30mph, you would have a drag force of 10kg and require 1.3kW motor. 40mph - a drag force of 17kg and a 3kW motor 50mph - a drag force of 26kg and a 6kW motor 60mph - a drag force of 38kg and a 10kW motor 70mph - a drag force of 52kg and a 16kW motor So I think speeds of up to 50-60mph are possible.
  5. Two freestylers that I highly rate, each with very different riding styles:
  6. I tried airless tyres on a solowheel a few years ago. Tried a few options with varying hardness, all gave a terrible ride - one was ok for travelling in a straight line but as soon as I tried cornering, nearly came off. They way they deflect is very different than on pneumatic tyres and not ideal for an EUC. Also quite heavy!
  7. Both great choices, can't go wrong with either. From my experience the XL is a bit more comfortable to ride and more practical, but you might have more fun with an MSX!
  8. Yeh I'll be around. I live close to hyde park so convenient for me. I'll message some other london riders see if they are up for a ride. Can you pm me your number? As far as parking goes, normally pretty bad but should be ok on good friday.
  9. To me that answers your question.. it is better in EVERY other aspect! If the design is that important to you then go for the Z10, but if you want best all round then it has to be the KS18XL. With the ks18 you can get a pretty good protective cover from https://www.roll.nz/ which should help protect your wheel from getting scratched up while you are learning. I would normally recommend buying from a distributor as you get the warranty (unless you are confident in replacing parts yourself if something breaks). After taxes the price isn't much cheaper in the end. Speedyfeet.co.uk are very good with support and addressing any issues you may have and eunicycles.eu have a very competitive price on the ks18XL.
  10. Have never had an issues taking my EUC into a bar/pub or even leaving it in a clock room at a club.
  11. Have you tried a KS18(X)L? I thought I would never buy an 18" as it would be too big, and I was looking to buy a Tesla. After trying out the KS18XL I found it to be a lot more agile than I expected (much better than the older ks18S, and surprisingly narrow, compact and comfortable) so I decided to buy one instead of a Tesla. Now after doing 400km through London, I think it's the best commuter wheel out there! Best thing about the 18 wheel is the confidence it gives you riding at high speed, I've gone over pot holes I hadn't seen at over 40km/h and was fine, but I would have definitely come off if I had been on a Tesla.
  12. I regularly use my ks18XL commuting in London and take it on the tube/bus/train. Most of the time I am pushing it along with the handle (on escalators and getting onto the tube too) and only need to carry it on short flights of stairs entering/exiting a station or hopping onto the bus. Although it is heavy, I am only carrying it for 10 second stints max so it's not really a problem for me. The hard part is carrying it up three floors to my flat as there is no lift, but I consider that my exercise for the day! The main thing I would suggest is to choose a wheel with a trolley handle which is very quick and easy to operate, you don't want to be wasting time at the top or bottom of a staircase trying to pull the handle out with a load of people trying to walk past you (ks16 is good for this).
  13. I use this one: https://www.amazon.co.uk/gp/product/B07PG69SFJ/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 Goes up to 10.5" circumference and works well with my wrist guards.
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