24kW stand-up scooter with air suspension

Thanks for the effort and detail on this build ... your a crazy man with that mill :D= This is ART!! ,
If i missed it What is the magnet width/ hight. 70mm im guessing.
And please keep stating your max batt/phase amps + temps = very interesting, id love to find a 100mm magnet / stator motor that can take 6'' tyres but i dont think they exist.
 
It's a stator's time :)
It was just pathetic to watch..
View attachment 10
Washed, something altered and painted with high-temperature paint
View attachment 9View attachment 8View attachment 7
Still, I succumbed to the desire to shove the radiator everywhere :-D
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By this point, the nucгlar controller has a weakening of the field. Given this, to maintain the current maximum speed and raise the torque, I decided to make 8 turns in the winding
9.jpeg10.jpeg
And just looking at this picture, I realized that the tire tread is not in the right direction. Decided to leave it out =)
11.jpeg
Here's what it looks like in action
[youtube]IsAodXizbBc[/youtube]
[youtube]y7diiDPhsS4[/youtube]
 
Thanks :)
Emoto said:
If i missed it What is the magnet width/ hight. 70mm im guessing.
Click to expand...
Almost ;) Magnets 60х3мм
Emoto said:
And please keep stating your max batt/phase amps + temps = very interesting
Click to expand...
Sure =) In the last video max batt - 55A (4160 watts), phase amps - 110. In this mode, the motor is heated to 110 degrees for 15 minutes. Continuous load without overheating - 30A batt (2200w)
 
Rummaging through the wilds, I bent the rear brake disc :(
To avoid this in the future, decided to make a new, thicker. For these purposes, a good fit was found at the dump old saw :)
20.jpeg21.jpeg22.jpeg
I didn't expect the braking efficiency to increase so much! Now the wheel is easily locked by pressing one finger!
 
This is a great upgrade but how did you manage to make it so much wider without to change the axle?

Did you put some glue between the motor and the covers in order to prevent air leakage?

Whete did you make the hole for the air valve ? as you said only some mm left outside of the motor!
 
And just looking at this picture, I realized that the tire tread is not in the right direction. Decided to leave it out =)
Click to expand...

You may get better traction in dirt this way, but with less traction on wet pavement.
 
icherouveim said:
This is a great upgrade but how did you manage to make it so much wider without to change the axle?
Click to expand...
it's easy =)
1-1.jpg
icherouveim said:
Did you put some glue between the motor and the covers in order to prevent air leakage?
Click to expand...
Rubber rings to prevent oil leakage. Resilient sealant to prevent air leakage :)
9-1.jpg
icherouveim said:
Whete did you make the hole for the air valve ?
Click to expand...
it's easy to ^_^
View attachment 1
 
A little bit about the nucular controller.
I studied the proposals for the controllers. Several even bought. But none could satisfy my needs... Accidentally finding a nucular controller, I was very surprised!! it was 11 out of 10 !!! Deciding to participate in the beta-test, I have never regretted. I had the opportunity to test on myself how the developers optimize the software and add new features. With each new firmware my scooter was getting better. It's really amazing when you can reduce the temperature of the motor by a few degrees by simply inserting a micro SD card =) or raise the maximum speed by 20% :)
And the ability to configure any parameter at all, is simply priceless.
After a year of use, I can say with confidence - that this is the best of all controller(imho).
If remove the emotion, the facts are:
1. at the moment, almost all the functions requested by users are implemented (including me).
2. For all the time there was no failure due to the fault of the controller.
3. The motor evenly produces excellent torque throughout the range of speed, without any jerks.

Here's a video from the regenerative braking test. At 2:23, you can clearly see how it works.
[youtube]0GLrhp4kX9s[/youtube]
 
With increasing power, increased average speed and errors made in the design of the front suspension became a serious problem
[youtube]6ipJ2FCZvAo[/youtube]
It was impossible to postpone and I began to make the front suspension 2.0
1.jpeg2.jpegView attachment 144.jpegView attachment 12

And suddenly there was a surprise. I broke the display case without going outside....
10.jpegView attachment 10
I ask'd the controller developers of the 3D-model display and adapted her to CNC. For couple of days it turned out here is such a pleasant thing.
13.jpegView attachment 815.jpeg16.jpeg17.jpegView attachment 419.jpeg20.jpegView attachment 122.jpeg
Now, if I fall on the display, it will do damage:-D
 
While I was engaged in an upgrade and repair, the parcel with spare parts for the cooling system came:
View attachment 9
The working principle of the cooling system is simple. Hot oil is pumped out of motor and enters the first heat exchanger on rear wall of the deck. Then through the hoses to second heat exchanger on front of the deck, after the pump. From the pump to third heat exchanger, then to the expansion tank. Created by pumping hot oil vacuum, sucks the cold oil from expansion tank. All heat exchangers are connected to the deck via thermal paste.
2.jpeg3.jpeg4.jpeg5.jpegView attachment 4
Incredibly difficult had to drill a hole in the axis of the motor for oil circulation. It took 3 hours.
View attachment 3View attachment 2View attachment 1
Taking the opportunity, once again rewound the motor. Back to 7 turns. Tested the drying mode of the windings at the nucular controller. It was very convenient!!!

[youtube]HTx4AsG5OCw[/youtube]
[youtube]x8ja3SHr-b4[/youtube]
[youtube]fydXENTYi2A[/youtube]
 
Come on!!! How many times did you have to rewound the motor?? It seems you had lot of free time to do this.

Does the cooling system work? Can you increase the power now?

In one of your videos there is a woman that goes faster than you. I thought you are the only crazy rider in this city!! This little thing can overpass a car!!
 
icherouveim said:
Come on!!! How many times did you have to rewound the motor?? It seems you had lot of free time to do this.
Click to expand...
Just 4 times =) Last time it took 5 hours. And yes, after I got divorced, I had a lot more time :-D
icherouveim said:
Does the cooling system work? Can you increase the power now?
Click to expand...
Hell yeah! I've increased the power to 5,200 watts. That's the most my battery can do..
max batt - 70A , phase - 150A. It was hard to get the cooling system to work as it needed to. Many changes were made to the initial design. But in the end, my battery can not now overheat the motor. When the cooling system is turned on, at a constant load of 45A batt, the temperature is stabilized at 60-65 degrees.
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11.jpeg
 
About the new front suspension. It's fantastic! The new suspension geometry returns the wheel to the driving line when it hits an obstacle. It is possible to comfortably control the scooter with one hand. I even tried to go without hands =) Perfect handling at any speed on any road !
[youtube]MSujB82KDYY[/youtube]
[youtube]i71rvZ7aNVU[/youtube]

Some beautiful photos:
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This is one of the most interesting projects I've seen in ES because you've tried to balance everything in this project. Power, Handling, Comfort, Breaking power, Cooling system for continues high power and good autonomy. Now you just need a second one for company.
BTW I'm sorry about your divorce, normally Russian wives are good.
 
Dude, out of everything written above, you decided to comment on that? Really? :lol:
 
Hehe, yea sorry man. I felt like mocking this careless sexist comment.

I'm on the floor by your build. I actually decided to go through it again this evening with some more time. So much information and nerd porn.

I'm sure you must have considered building and selling those? Sorry, no pressure. But I'm sure not just me would love to pay for such obsessive engineering...

How is the steering geometry actually? Can you lean in to steer and drive one handed? (Remember my Plankalkül Idea)
I have this vision of pretty much surfing the street.
I guess with slightly more extreme angles your steering is pretty much already that.
 
Alex 2d :bigthumb:
You are the best scooter creator I've ever come across that is a work of art !, I don't like flat rear tyres to much they do not turn the best but the heatsink and the frame is just a stunner, what's the handle bar setup threaded fork ? An oversized tapered headtube with dual longer throw fox float air shock front and back would be like magic carpet ride, be high up mind stand close on 8ft probs.

I've only just seen the thread I'll read this one when I got time can't wait.
 
TilmanBaumann said:
Hehe, yea sorry man.
Click to expand...
Don't worry, man, I appreciate the joke :) I felt like mocking this obvious offtop :-D

I don't have a product to sell. What you see is 0.000..00034a version =) Raw sample at the testing stage.

TilmanBaumann said:
Can you lean in to steer and drive one handed?
Click to expand...
Yes, I tried to control one hand to a speed of 50 kmh, it is possible and quite comfortable, but only on a flat road. The fact that the acceleration of 0-50kmh in 4 seconds, the handle bar must be held with both hands.

TilmanBaumann said:
How is the steering geometry actually?
Click to expand...
It is easier to show =)
This is the first, failed version of the suspension with one shock:

This is the second version with two shock:
View attachment 1
 
I suppose if the angle is made even flatter, leaning in to surf around the corner is even more possible.
But I guess it messes with the off-road steering because it will resist steering input.

Don't worry, it is very obvious that a solid handlebar is required. But on a good road I think it could feel real nice to stand sideways with one hand on the steering column.
I sometimes do this with my Xiaomi m365, but it's really dangerous with the small wheel and high instability.
 
TilmanBaumann said:
I suppose if the angle is made even flatter, leaning in to surf around the corner is even more possible.
Click to expand...
Here you are absolutely right! At an angle, you mean rake? Increasing the angle of the headtube will increase the trail. This will give the opportunity to surfing like Plankalkül =) But on the arm suspension it makes no sense to increase the rake. You can achieve the same effect by increasing the trail, moving the front wheel back.
The larger the trail, the harder it is to turn the handlebar at low speed. You have to move the entire weight of the scooter with rider when you turn the handlebar.
3.jpg
TilmanBaumann said:
But on a good road I think it could feel real nice to stand sideways with one hand on the steering column.
Click to expand...
I specifically designed a wide deck that would put your feet in a row :) imho, that it is much more convenient to travel long distances. I always help myself in turns, shifts from one foot to the other
 
Ianhill said:
I don't like flat rear tyres to much they do not turn the best
Click to expand...
I too was afraid of poor handling because of the wide rear tires. But in practice, deterioration of the control I do not see. There are only advantages of increased traction.
Ianhill said:
what's the handle bar setup threaded fork ?
Click to expand...
View attachment 12.JPG
 
alex_2d said:
While I was engaged in an upgrade and repair, the parcel with spare parts for the cooling system came:
1.jpeg
The working principle of the cooling system is simple. Hot oil is pumped out of motor and enters the first heat exchanger on rear wall of the deck. Then through the hoses to second heat exchanger on front of the deck, after the pump. From the pump to third heat exchanger, then to the expansion tank. Created by pumping hot oil vacuum, sucks the cold oil from expansion tank. All heat exchangers are connected to the deck via thermal paste.
2.jpeg3.jpeg4.jpeg5.jpeg6.jpeg
Incredibly difficult had to drill a hole in the axis of the motor for oil circulation. It took 3 hours.
7.jpeg8.jpeg9.jpeg
Taking the opportunity, once again rewound the motor. Back to 7 turns. Tested the drying mode of the windings at the nucular controller. It was very convenient!!!
10.jpeg
[youtube]HTx4AsG5OCw[/youtube]
[youtube]x8ja3SHr-b4[/youtube]
[youtube]fydXENTYi2A[/youtube]
Click to expand...

OK so let's go back to the topic.

I understand "almost" everything about your project except how the oil flows thru the motor.
As you've said you've drilled the right side of the axle and then what ? I lost it.
How the hot oil exits from the motor ?
If you have some time please show me.

Also did you think to use a computer radiator with the electric pump like some ebikers do to cool down the hub motors ?
 
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