Right now it’s the long wheel axle that’s bending the most. I also heard you could fill up the gap, some use concrete but JB Weld seems like a good option.
I think I will go back to a solid two arm caster. Wheel pulley on the outside or on the inside? If I put it on the outside I need to make a design like @leen with d-shaft axle and integrated side bearings.
I think it makes some sense to flip the motor and have the pulleys inside the castor frame/arms.
If not flipping the motor some weird spacer/standoff allowing pulleys inside would be needed.
These are the kinds of design considerations I like to pretend keeps Aaron Aders up at night. Maybe that’s just me.
Are the two bends before the 90° necessary? Is it possible to have from the wheel to the bend straight?
last week I got the wheelmount and it worked out just as I hoped 
For the first time I was able to stand on the board and push it (unpowered) around on my driveway. Too bad holland is the flatest country on earth and I don’t have a descent slope to try around. My first impression is that it feels just as I hoped… went much better over bumps and bad road while still feeling like a freebord/SBX. Really excited to get it powered! I’m talking to @Simeon at the moment to make me a battery.
If anyone want to use my mount design and tweek it for their own needs send me a PM than I can send the fusion 360 file with sketches etc.
Not yet… I’m using the original SBX pulley for now… The timing belt I ordered fits really good BTW
Sidenote; when spinning the wheel around the axle makes (a not to loud clicking sound within the bearings. I did not notice it when pushing the board around with me on it. I have to use 5mm spacers between the wheel hubs and bearings/motor mounts to close the gap. I was thinking of making them with a key inside to elimante that noise maybe.
Yeah I think so… he also must have made numerous iterations.
No not necessary, just for design purpose.
Whats the materials thickness?
Looking good
Good job! Love how you did the offset motormount to get the belt inside the U-bracket!
I was gona ask something about bearings but they will be in the wheel as normal…with this design you’ll also be able to throw in every kind of wheel and pulley. Really nice!
Already liking this design more. Is the motor mount connected just by that one bent flange at the top? I’m concerned that could act as a springy pivot point, to let the motor swing inwards when it puts drive forces on the belt. That would lead to a lot of skips.
Just very briefly skimmed this thread as my youngest daughter recently came across a summerboard and wants me to make one. 
I was thinking 4mm steel
Yes it’s the flange that holds the motor in place, if the 4mm steel is to week and causes some movement I have to think of something to stabilize the design
The belt tension when the motor is powered will be on the same order of magnitude as your body weight, so imagine whether the steel would bend if you stood on top of it
I was looking into this company to maybe make a request for a custom slipring. I was thinking of a maximum height around 30mm, diameter 25mm, Voltage 50,4 standard discharge 20A? Max 50A? I’m the esk8 electronics Noob here so correct me if I’m wrong 
Anyone got a better idea for a ideal setup for a capsule slipring?
I would like it to be as low as possible…and no pancake slipring because they need to be cleaned all the time 
They probably need to make it wider than 25mm diameter if the height is 30mm.
