School is open again 
time to make some things for myself hehe.
I have spend a day on the hubs and there almost finished.
they fit realy tight into the wheels, so thats perfect!
Hope you like it 
Regards, Eldert
12 Likes
update! The outer ring of the motor is been pressed in to the hub:) It was a little bit difficult to measure the diameter of the outer ring because it wasn’t perfectly round. So i was a little bit nervous about the fit because it has to be in place perfectly instantly. It was the intention to have a shrink fit of about 0.08 mm.
At work we have a hydraulic press with heating plates for curing carbon parts witch i used for pressing the parts together. the hub was first cleaned and heated to 80 degrees Celsius to let it expand. Also the edge of the outer ring is been sanded to get rid of the paint.
Luckily the fit was perfect:) it needed about 2 tons to get it in place. I’ve used Locktite 603 to be sure it is secure for ever.
Now the only things that have to be done is drilling and threading the m3 holes for the carbon wheel attachment plate.
I am very happy with the result
My new Hammond b40 arrived today at the local skate shop Gravity supplies. Its a bit flexy but i am not that heavy so it should be ok i guess.
d
29 Likes
Damn this looks awesome!
Beautiful machine and custom work here!
Look forward to seeing it on the road! Congrats on a great build so far. Will follow.
Thanks
But the board isn’t going anywhere at the moment.
Today the hanger was modified on the lathe at school.
It was a bit tricky to fasten in on the lathe because the shape of the hanger.
the most important was that the cylindrical part i had to lathe was concentric with the steel axle of the hanger.
With the collet in the lathe the steel axle is almost perfect lined out so this couldn’t be better.
I had to be very careful because the tool was pointing out way too far.
In the first picture it is very clear to see how rough the dimensions of the cast hanger are.
5 Likes
Good evening!
I’ve spend some time on the lathe again 
This was the last structural part of the motors that had to be machined.
Again a very tight press fit between the bushing and the stator.
The stator had a diameter of 20.0mm so I made the bushing 20,05 mm.
The internal diameter of the bushing was 0.02 to big before pressing it in to the stator.
When it was pressed together the internal diameter was just about right.
27 Likes
Very impressive job ! What’s your specs with your board ?
Thanks, What do you mean exactly? The battery will be 4x zippy 3s1p 5000mah I already ordered those so i hope they will arrive soon.
sorry, I just wanted to know the parameters of your board (speed with your hub motor, weight, autonomy) but you don’t have test
To be honest I have no idea 
.
When i calculate the speed without counting the losses, the speed should be 45 km/h.
It was my intention to reach 30 km/h.
I haven’t weighed the complete board it yet. but i know that both wheels with motors weigh about 1,4 kg. Do you know how much a set of motors with gears wheels and pulleys weight? Just to compare.
I will weigh my setup I’ll tell you tomorrow
Today i visited Danny (JTAG) to work on my board in his mancave.
I have almost no experience with electronics and with setting up the vesc, so danny helped me with that today:)
it was very exiting to see the motor make its first spins.
first we tried testing with a 4s lipo battery because my own 12s battery pack isn’t ready yet.
After a few indoor tests we concluded that a single motor running on 4s doesn’t have enough power.
So we used a huge 12s 1.8 kw/h li-ion pack of Danny’s electric scooter.
It runs very smooth and it makes almost no sound, so i am happy with that.
because its sensorless you need to give a hard push before it starts.
at speeds above lets say 10 km/h it begins to run good.
I am designing a new back plate for the motor that includes holders for 3 hall sensors. next week i can use the new 3d printer of my university to print these new plates 
5 Likes
What supplier do you get your clones from, just wondering if i am buying from the same people
Got 10 of them for $2,80 each.
1 Like
10sets? I am imagine delivery costs would be high
no 10 wheels in total. shipping was about 10 dollar to the Netherlands.
Oh ok i am getting 25 sets from i think the same supplier, are the wheels good.
And also someone asking me do the flywheel pulleys fit these wheels
I haven’t used them a lot and i don’t have any experience with other wheels so that is hard to say. but as far is i know they are perfect. all the dimensions where like they should be.
I can sent you the solidworks files of the hub if you like?
Yeah that would help a lot thanks