Wheels are probably the most important component of every longboard especially on ones tuned for
speed.
The most important parameters are diameter , contact patch , durometer , lip shape and on electric in-wheel longboards also urethane depth . Too little and the ride will be bumpy and totally unpleasant. So we decided to go for 85 mm diameter, 70 mm contact patch 80 Shore A durometer and 17,5 mm urethane depth. The wheels are built on an aluminium core that allows easy mounting on the electric in-wheel motor. Our wheels are optimized for high speed, they are grippy and predictable and of course they will not let you down even when sliding sharp corners.
But it was not so at the beginning – back then we used aluminium core with four 2.5 mm deep grooves to create a mechanical lock between the core and urethane. It worked, but not for speeds of over 90 km/h.
At those speeds the wheels are rotating so fast that centrifugal force could tear the urethane off the core (ghosting) then the urethane spreads to the point that it could separate from the core. This is of course extremely dangerous and because our board is capable of even higher speeds we found a solution to make the wheels safe for the speeds that were never achieved on any existing e-board.
We totally redesigned the core so the urethane bonds to the core from inside and outside so there was no chance of separation from the core any more. All our prototype wheels are made that way now and since total core redesign we haven’t had any problems with the wheels whatsoever! But the redesigned core is quite expensive so it wasn’t convenient for mass production. Here’s where our partner from the rollercoaster business comes in. They made special wheels for us on totally basic aluminium cores even without grooves. And because they did the job perfectly our production wheels are totally at any speed.
If you count real as being a board you can literally only ride once because there are numerous mechanical issues with it… sure. It exists.
LHB had a long winded (but very funny and informative) post about his ventures with them, apparently it was a shitshow from start to finish if I remember correctly
no worries, could some of their tech be salvaged or is anything worth re-visiting or has been surpassed by the current stuff here? like I’m not exactly sure if belt drives can sustain those speeds.
There shouldnt be an issue with running belt drives at speeds like that, expect for when you try to brake
I dont know what ESC they used, but a hub motor getting to 60mph probably has a high ERPM, since my 10s MAD hubs at 130kv got me to 40mph, and that was really pushing the 60,000 ERPM limit of 4.xx VESCs. That could be a piece to salvage… but more than likely its not very functional when paired with parts that the average DIY-er would use.
Other than that their hubs seem cool but not useful, the deck looks… interesting? Personal preference I guess
Not necessarily. Depends how many poles it has. A 200kV, 14 pole, hub motor with 85mm thanes running on 12s would be pushing (theoretically) 77mph at 54k ERPM
yeah, but as far i i remember @longhairedboy didnt use the original nextboard esc or am i wrong here? Their esc is a modded Rc esc if i remember correctly, this makes things difficult i guess.
ah ok sorry. What do i have in mind?
Can you describe as short as possible for me where the problems where located?
Cant get that shit out of my head that you didnt made this thin running.
You’re probably not thinking of the Voltron weapon I made that ended up being one ridiculous failure after another. @Kaly absolutely loves that sword board though. It’s his favorite ride. You should bring it up every single time you talk to him if you ever meet.
Maybe…I have have to do some research again, bc im a bit confused now. I just thought bc like you mentioned skate-astrophy you lost all the money on them nextboard stuff. Something like this i remember, but Its been a while since you did this thing and for that reason maybe im confounding something.
Thank you for replying that fast, bro.
