24kW stand-up scooter with air suspension

Absolutely awesome project Mr Alex. My highest appreciation of your stunningly beautiful mechanical artwork. I am in awe of your most skillful craftsmanship and vast knowledge of electronics and mechanics. I fell in love with electric scooters and was really hooked when I got my Dualtron 2, which is dual motors. It has really fun weight to power ratio and I ride it everywhere. I Love it! I almost bought the new Dualtron X 2, but decided to build my own scooter too. I am trying to push the wheel size larger while still keeping a low scooter deck. My new scooter has dual motors and is looking pretty wild also. I would jump at any chance to talk scooters with you anytime sir. I am building a few EV projects and am having so much fun learning more. Hoping all is good there. If you ever come to visit sunny San Jose, California you will have a place to stay and a buddy to go riding with! I really appreciate you sharing everything here so well for many of us to learn and be amazed brother. 😎
 
Updates on the project:

https://www.youtube.com/watch?v=c72BC6YpGWY
https://www.youtube.com/watch?v=vAMzjBMBlk8&t=17s
https://www.youtube.com/watch?v=sXdc7ukgijE
https://www.youtube.com/watch?v=wNOqBZvezgU
 
Updates:
https://www.youtube.com/watch?v=vAMzjBMBlk8
 

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:bigthumb:
Hi Alex,
Bravo...!!!!!! :bigthumb:
I read all your posts. What you had done is a Magic.

Actually In my country(India) we don't have DIY bikes. And I am planning to build one.
Eventhough I have read all the posts, It would be very helpful if you share the following information of the motor.
Rear Tyre size
Hub motor radius
Stator length
Magnet size
Number of turns in windings
Battery info(V & Amph)
How you implemented cooling system into the hub motor.

So that I will also try to build one. I am a software engineer by profession so not sure whether I will get the same perfection like you. But definitely will give a try.

Your MIND & HANDS are very gifted.

Happy for you.

Cheers,
Rajesh Kumar G
 
Also One Suggestion.

I have noticed that you have a logo in front side(below the folding section) and in rear glassy fender.
You should have put a logo on Deck/Standing board as well. Will be very marvelous if you do so.

Cheers,
Rajesh Kumar G
 
Well, let's continue the topic)
Many thanks to all readers of this topic, your attention and such high marks of my work!

The project to create a scooter "Vostok 1 ver.2.0" turned out to be much more difficult to implement than I expected at the beginning... Therefore, everything dragged on for a much longer time... Nevertheless, the prototype of the new scooter is almost ready! It remains to finish some elements. But it is already possible to run-in and test to obtain real TTX.

Here are some photos of what happened and the first videos from the tests.
001.jpg002.jpg003.jpg004.jpg005.jpg006.jpg
[youtube]dm6FrH5O1jc[/youtube]
[youtube]xUJdXevDOcM[/youtube]
[youtube]i7CldNqmRfM[/youtube]
[youtube]6SO9_kXW8xk[/youtube]

Please forgive me for writing little and rarely in this topic. In the near future, I will try to describe in detail the process of creating this scooter
 
It all started with the engine. Based on the experience gained in the East 1, I have developed my engine, which is ideal for a go-kart tire. The challenge was to squeeze as much energy into this size as possible. To achieve this goal, I used the highest quality components. I ordered magnets and a stator from different companies, everything else was done by myself.
It turned out to be very difficult to put very powerful magnets in a steel cylinder. At the first attempts, there were a lot of pinched fingers and broken magnets
011.JPG
With the stator, everything was much easier
012.JPG013.JPG
Next, the side covers of the engine made of aviation aluminum D16T
014.JPG015.JPG
Steel axle, with an outlet for wires and channels for coolant.
016.JPG017.JPG018.JPG019.JPG020.JPG
Then, the main elements of the rear suspension are made of the same aluminum024.JPG025.JPG026.JPG
Double dropouts made of steel
021.JPG022.JPG023.JPG
Here is a small set for the first tests
027.JPG
Checking the tightness of the tire
028.JPG

The first tests of the engine. To be honest, I was very nervous when I connected everything, I was afraid that it would not spin at all or burst into flames))
[youtube]t_Gg7Wc40Tg[/youtube]
Just the wheel is spinning )
[youtube]Gy0dEiOxrEo[/youtube]
 
An embodiment of principle 'Who needs aero when you can just add power' :)
A CNC porn, too. I wish it was not wasted on a 'stand up scooter', but is cool, I give you that.
I wonder if you can fit a sort of half-body fairing on this thing, and aero bars to hide behind it for 100+ kmh at a small fraction of power? Makes a ton of sense if you ask me...
 
The deck is also made of aluminum
Front and rear deck
01.JPG02.JPG03.JPG
Side parts
04.JPG05.JPG
Viewing window for coolant in the side of the deck
06.JPG
Compartment for the cooling system pump
07.JPG
Kit for initial assembly
08.JPG
Coolant channels inside the deck walls
09.JPG10.JPG
Fitting
12.JPG13.jpg
Additional processing for the fit of the upper and lower cover of the deck
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Production of the upper and lower deck covers
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outstanding job Alex !! The liquid cooling path integrated in the side plate is genious. :bigthumb:
 
Hi Alex,

Awesome @@ :bigthumb:

Could you please let us know how you are pumping in & out the coolant into the motor. I know that it is going via the axle but after that what happens I dont know.

A diagram will be helpfull.
Also how you connected all the inner side decks for coolant circulation.?

The information you give is much informative and will be helpful in designing my bike and fixing overheating issues in the beforehand itself.

Thanks & Regards,
Rajesh
 
hero_dan said:

ConcreteYellowAmericanblackvulture-size_restricted.gif


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Hi All,

Since Alex is a busy bee, :flame: :flame: :flame:

Could anybody help me with the answers for the below questions?

1. How the oil is pumped into the motor. Are there any compartments installed for oil circulation/heat exchangers inside the motor.? If so then a block diagram will be very helpfull.
2. How is the folding system designed.?
3. I don't see a charging port. I see one small port kind of thing at the rear, next to cooling compartment. Is that a charging port.?
4. What is the dimensions of stator, magnet & cylinder.?
5. Is the motor waterproof.? If so what are the waterproofing method, process and materials that I need to use.

Too much to ask..Being from software background I don't know the above. Hence asking.

If I get the above details, then I will start designing as per my requirement.
Expecting a valuable reply.

Cheers,
Rajesh
 
RaicceKG said:
Could anybody help me with the answers for the below questions?

Hi Rajesh. I have a related question for you.

How many of the electric motors you see on a day to day basis use liquid cooling?

Oh, one more question:

Why do you think that is?
 
I've been thinking about making a stand up scooter myself.
I don't think I'd go with high powered rc motors and small wheels.
I love riding through tree's, over ruts, on single track so a hub motor would work.
16" tire mounted onto hub flange (no spokes), would weigh a lot if carrying into a mall but I guess you could weld on some securing points for a Kryptonite Yellow Forgetaboutit NYC U-lock or two.
Backpack battery would be my route as I use battery for ebike to.
How to secure hub motor without welding 1/2" plate steel for non easily removable hub motor
Winters coming so its not something I think about a lot. I only think about when I see private stand up scooters whiz by which irritate me so I know how walkers feel about ebikes :lol: :lol: :lol:


----

Oil leaks and makes a mess
Sealing surfaces between cover plate (hubs) isnt a crucial concern for hub motor makers
Just use Statorade (Ferrofluid) if you want something that wont leak

Lastly, 10kw stand up scooter is absolute craziness unless you want it for going up ski resort "ski-outs" which are long mile(s) runs with some very steep sections. 30 or 40 mph on one = crazy
One pothole, one curb without jumping and it is more then just Chalo's second pic/gif

https://endless-sphere.com/forums/viewtopic.php?p=1680057#p1680057
Chalo said:
 
RaicceKG said:
Could anybody help me with the answers for the below questions?
Hi!
Please forgive me, but I would not like to make public all the nuances of production.
Chalo said:
Oh, one more question:

Why do you think that is?
I'm also wondering why?

markz said:
Lastly, 10kw stand up scooter is absolute craziness unless you want it for going up ski resort "ski-outs" which are long mile(s) runs with some very steep sections. 30 or 40 mph on one = crazy
One pothole, one curb without jumping and it is more then just Chalo's second pic/gif
In the new version of the scooter , the power is 25 kW in one rear wheel )
Everything depends very much on the design of the vehicle. On this scooter, the speed of 50 Mph feels very comfortable.
You have to be blind not to notice the curb))) And so, the suspension with a stroke of 160mm, allows you to move freely off-road, even on such small wheels
 
Now a little bit about the rear suspension. In this version, the rear suspension is multi-link. So, I haven't come up with another way to position the shock absorbers horizontally and get a positive progression.
01.JPG02.JPG
Also in this version of the scooter, I changed the way the titanium axes are fixed. I had to invent my own screws
03.JPG04.JPG
This is how the titanium axis of the rear pendulum looks like
05.JPG
A set of bushings for the rear suspension made of graphite-filled polyamide-6
06.JPG
Rear suspension assembly
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The first test of the engine in the assembled suspension
09.JPG

Working stroke of the rear suspension 160mm
[youtube]8Ogi8m7e5Ak[/youtube]
 
The front suspension also has a working stroke of 160 mm. Unlike the first version of the scooter, the rake and trail have been changed
01.JPG02.JPG03.JPG
Reinforced steering cup
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I also significantly strengthened the attachment point to the deck
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Steel steering axle with hole for wiring and hydraulic line
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The entire front suspension assembly
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On-board computer display case with mechanical buttons and full waterproofing
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Handlebar folding system
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The front wheel does not differ much from what was on Vostok1, although in this version the tire is tubeless and there are 4 bearings. Brake disc made of saw blade made in the USSR.
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The brake calipers in front and rear are the same. Movable with one piston.
Front
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Rear
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Brake pads from a 50cc scooter
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The brake caliper mounts are made of steel
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The brake and gas trigger are manufactured using high-quality bearings to ensure maximum smoothness of pressing.
Each trigger is equipped with four programmable buttons
01.JPG02.JPG03.JPG04.JPG05.JPG06.JPG

Handlebar assembly
01.JPG02.JPG
 
A few videos about the production
[youtube]8Ogi8m7e5Ak[/youtube]
[youtube]lLcDnj2W-xM[/youtube]
[youtube]AtFM2R44IfM[/youtube]
[youtube]QAF64PDOzks[/youtube]
 
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