10kW stand-up scooter with air suspension

Lightweight / Folding / Portable EVs - seats optional
alex_2d   10 W

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Re: 5200W stand-up scooter with air suspension

Post by alex_2d » Dec 17 2018 10:24am

icherouveim wrote:
Dec 17 2018 10:05am
How the hot oil exits from the motor ?
21.png
icherouveim wrote:
Dec 17 2018 10:05am
Also did you think to use a computer radiator with the electric pump like some ebikers do to cool down the hub motors ?
I thought that. This is a very expensive solution. If the pump for 5$ will not cope, then I will replace it with a pump for computer =)

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icherouveim   1 kW

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Re: 5200W stand-up scooter with air suspension

Post by icherouveim » Dec 17 2018 10:59am

alex_2d wrote:
Dec 17 2018 10:24am
icherouveim wrote:
Dec 17 2018 10:05am
How the hot oil exits from the motor ?
21.png
icherouveim wrote:
Dec 17 2018 10:05am
Also did you think to use a computer radiator with the electric pump like some ebikers do to cool down the hub motors ?
I thought that. This is a very expensive solution. If the pump for 5$ will not cope, then I will replace it with a pump for computer =)
So have you drilled the other side of the axle also ?

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icherouveim   1 kW

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Re: 5200W stand-up scooter with air suspension

Post by icherouveim » Dec 17 2018 11:08am

Sorry this is was a stupid question, I forgot that the cables exit from the other side so probable there was available space to pass thru the axle a pipe.

alex_2d   10 W

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Re: 5200W stand-up scooter with air suspension

Post by alex_2d » Dec 18 2018 1:14am

I was very upset by the quality of gas triggers available for sale. I wanted something strong and with a bearing. I had to do it myself...
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icherouveim   1 kW

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Re: 5200W stand-up scooter with air suspension

Post by icherouveim » Dec 18 2018 1:24am

Good Morning! Come on! This is unbelievable!
Is there something you cannot do?
After all this practice you will be able to make metallic teeth also!!

alex_2d   10 W

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Re: 5200W stand-up scooter with air suspension

Post by alex_2d » Dec 18 2018 2:51am

icherouveim wrote:
Dec 18 2018 1:24am
Is there something you cannot do?
Save up for a new battery :-D

At the moment, that's all I managed to do. Summing up the results for the year...
Total kilometers travelled - 9700
With the tire for go-kart - 7500
With new suspension - 6900

The design proved to be extremely reliable. Still no backlash, no loose ends. The only unexpected failure was a burst titanium pipe that holds the headlight.
The front tire was the expendable material. Total spent 8 tires
The back tire from the go-kart is incredible! for 7200km wear approximately 30%

Three battery cells died. I would like to replace it with li-ion, but not yet. So far, the scooter is disassembled... until better times

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icherouveim   1 kW

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Re: 5200W stand-up scooter with air suspension

Post by icherouveim » Dec 18 2018 4:31am

alex_2d wrote:
Dec 18 2018 2:51am
icherouveim wrote:
Dec 18 2018 1:24am
Is there something you cannot do?
Save up for a new battery :-D

At the moment, that's all I managed to do. Summing up the results for the year...
Total kilometers travelled - 9700
With the tire for go-kart - 7500
With new suspension - 6900

The design proved to be extremely reliable. Still no backlash, no loose ends. The only unexpected failure was a burst titanium pipe that holds the headlight.
The front tire was the expendable material. Total spent 8 tires
The back tire from the go-kart is incredible! for 7200km wear approximately 30%

Three battery cells died. I would like to replace it with li-ion, but not yet. So far, the scooter is disassembled... until better times
It was a great review. Complicated CNC work with lot of small details. Have you studied this ?
You've done lot of kilometers for only a year. Just imagine that the average yearly mileage for a car is 10.000 kilometers!
So what you've done is very impressive.
Pity that your battery pack needs replacement I thought LiFePO4 cells can live for 5-6 years without no problems and you can charge them more than 4.000-5.000 times.
Maybe the quality of these specific cells is not so good. If you like to do so many Km maybe is better to search and find good quality LiFePO4 cells instead of lithium ?

Is it cold there now ? Is this why you've disassembly the scooter ?

alex_2d   10 W

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Re: 5200W stand-up scooter with air suspension

Post by alex_2d » Dec 18 2018 7:16am

icherouveim wrote:
Dec 18 2018 4:31am
Have you studied this ?

I am a lawyer by education:-D but having time, desire and Internet access, you can learn anything :)
icherouveim wrote:
Dec 18 2018 4:31am
You've done lot of kilometers for only a year.
Indeed, such features of the e-scooter, I almost did not go by car. Only if need to go to another city.
icherouveim wrote:
Dec 18 2018 4:31am
Pity that your battery pack needs replacement I thought LiFePO4 cells can live for 5-6 years without no problems and you can charge them more than 4.000-5.000 times.
Maybe the quality of these specific cells is not so good. If you like to do so many Km maybe is better to search and find good quality LiFePO4 cells instead of lithium ?
I long chose a cell for the battery. Had a long chat with the seller on Ali. But what came did not meet the stated characteristics.
One cell of the battery is 12AH Continous discharge 5c (peak 8C). Battery 24s3p had to give 180A (13kW). but in fact, the battery could not give 90A...
I'd like to order some li-ion cells, 3.7 v 48AH discharge current 180A. I personally know people who bought such batteries and conducted tests. It's definitely for me.
icherouveim wrote:
Dec 18 2018 4:31am
Is it cold there now ? Is this why you've disassembly the scooter ?
In my city there is almost no snow, so I can drive all year round:) The problem is that the battery began to give a maximum of 50A... it's like riding a sad cart.

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fechter   100 GW

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Re: 5200W stand-up scooter with air suspension

Post by fechter » Dec 18 2018 8:46am

New batteries for sure. Trick will be to find some that fit nicely (and are affordable).

Just wondering, how many hours of work did it take to build that? At the speed I do things, it would take about 20 years.
Are the parts coated or anodized? Anodizing would really take it to the next level.
"One test is worth a thousand opinions"

alex_2d   10 W

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Re: 5200W stand-up scooter with air suspension

Post by alex_2d » Dec 18 2018 11:26am

The design took 2 months, 12-14 hours a week. For the manufacture of parts, in the amount of 60-65 hours CNC milling. The first Assembly - two months, 14-16 hours a week. Believing spent on upgrades is difficult to calculate. But rewind motor the week I just spent :)

In the future, I thought about anodized. I tried to do using what is, the result is not pleased... If do, do it accurately. And for this need to buy special equipment. For details of my size, suitable equipment will cost $4,500

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shortcircuit911   100 W

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Re: 5200W stand-up scooter with air suspension

Post by shortcircuit911 » Dec 18 2018 7:58pm

Hi, amazing work! That throttle is bad ass, love the bearing. Very surprising to hear your a lawyer, looks like you've been machining for years. Just wanted to say nice work. Sub'd!

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fechter   100 GW

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Re: 5200W stand-up scooter with air suspension

Post by fechter » Dec 19 2018 12:21am

alex_2d wrote:
Dec 18 2018 11:26am
In the future, I thought about anodized. I tried to do using what is, the result is not pleased... If do, do it accurately. And for this need to buy special equipment. For details of my size, suitable equipment will cost $4,500
The raw aluminum has an appeal to it but might get corroded over time. Over here, there are shops you can send your parts to for anodizing. Not really cheap, but much less than getting your own equipment.
"One test is worth a thousand opinions"

cvin   10 mW

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Re: 5200W stand-up scooter with air suspension

Post by cvin » Dec 19 2018 3:18am

I have no words
this is AMAZING!!!

kudos for all the incredible work on this

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izeman   10 GW

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Re: 5200W stand-up scooter with air suspension

Post by izeman » Dec 19 2018 6:03am

How did i miss that? Fantastic build!!! Congratulations!

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imval   100 µW

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Re: 5200W stand-up scooter with air suspension

Post by imval » Dec 19 2018 9:31am

That is an amazing project! I will follow it closely.

Would you mind sharing the design of your throttle and buttons grip ? I had something similar in mind for a while for e-bikes.

Continue the CNC porn and enhancements, amazing job!
First generation: VESC 4.2, 13S12P 18650 from laptops, 1.5kW hub on Focus MTB.
Second generation: Sabvoton 72150, 13S13P 18650 Tesla cells, 5kW hub on imported ebike frame.
Future builds: Longboard, Boat, ...
Achievements: No lithium fire yet :bigthumb:

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nuxland   100 W

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Re: 5200W stand-up scooter with air suspension

Post by nuxland » Dec 19 2018 2:33pm

:bigthumb:
I have a question about oil level in motor. Did you feel that almost full of oil there were some more amps required to spin the motor? I have an inrunner that has a little bit of oil inside to help spread the heat from coils to outer casing. And was thinking of modifing this to oilcooled but were affraid that with more oil inside, there will be a lot of drag to the rotor.

alex_2d   10 W

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Re: 5200W stand-up scooter with air suspension

Post by alex_2d » Dec 20 2018 1:30am

Thank you all for your wonderful comments!!!
I'm really happy:-D
shortcircuit911 wrote:
Dec 18 2018 7:58pm
Very surprising to hear your a lawyer, looks like you've been machining for years.
I'm a bad lawyer :-D To be a successful lawyer in my country, you need to have a connection with the mafia=)) So I decided to change profession.
And bearing indeed very cool =)
fechter wrote:
Dec 19 2018 12:21am
The raw aluminum has an appeal to it but might get corroded over time.
Given the rate of natural corrosion of duralumin (15-50 microns per year), the problems will go to my grandchildren :)
fechter wrote:
Dec 19 2018 12:21am
Over here, there are shops you can send your parts to for anodizing.
In this case, you can really stretch the assembly for years :)
imval wrote:
Dec 19 2018 9:31am
Would you mind sharing the design of your throttle and buttons grip ?
Do you want CAD-models?
nuxland wrote:
Dec 19 2018 2:33pm
Did you feel that almost full of oil there were some more amps required to spin the motor?
Even the complete filling of the bearing with grease, does not increase the rolling resistance.There is more suitable resistance when the flow around the bodies. But given the geometry of the rotor, this resistance can be ignored.
The only thing I noticed - the more oil in the motor, the lower the temperature :) well, I use the most liquid oil for Arctic transformers.

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imval   100 µW

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Re: 5200W stand-up scooter with air suspension

Post by imval » Dec 20 2018 2:29am

alex_2d wrote:
Dec 20 2018 1:30am
imval wrote:
Dec 19 2018 9:31am
Would you mind sharing the design of your throttle and buttons grip ?
Do you want CAD-models?
Yes please that would be very helpful! If you don't mind of course :)
First generation: VESC 4.2, 13S12P 18650 from laptops, 1.5kW hub on Focus MTB.
Second generation: Sabvoton 72150, 13S13P 18650 Tesla cells, 5kW hub on imported ebike frame.
Future builds: Longboard, Boat, ...
Achievements: No lithium fire yet :bigthumb:

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izeman   10 GW

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Re: 5200W stand-up scooter with air suspension

Post by izeman » Dec 20 2018 5:16am

And for those who didn't notice: The rim has "72V 245W 25mk/h" written on it. So it's totally street legal mister officer :lol:
Well not really as (at least) EU regulation says 60V max w/o special precautions. But i don't think that police will know that.

alex_2d   10 W

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Re: 5200W stand-up scooter with air suspension

Post by alex_2d » Dec 20 2018 5:33am

I thought it would be a funny sign :-D Now, in my country, I'm legally a pedestrian =)
The cops can fine me ~7$ for crossing the road wrong. If they catch up :-D

alex_2d   10 W

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Re: 5200W stand-up scooter with air suspension

Post by alex_2d » Dec 20 2018 8:21am

Found a funny video =) By the way, I can ride even in heavy rain. Waterproofing turned out very good :-)

el_gallo_azul   1 µW

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Re: 5200W stand-up scooter with air suspension

Post by el_gallo_azul » Dec 21 2018 7:31pm

Heart dat shit boy <3

alex_2d   10 W

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Re: 5200W stand-up scooter with air suspension

Post by alex_2d » Dec 22 2018 6:15am

While I'm thinking about where to get the money for a new battery, decided to completely change the wiring =)
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I want to implement automatic control of the cooling system. The nucular controller allows you to adjust the temperature of the pump. And to make the inclusion of all users through a low-current relay.
57.jpg
Instead of dc\dc сonverter 90-12v, using a conventional power supply for LEDs, 220v\15A

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icherouveim   1 kW

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Re: 5200W stand-up scooter with air suspension

Post by icherouveim » Dec 22 2018 1:05pm

My heart brakes to see it like this.. all the summer it was going up to the mountains like crazy 10.000km total distance and now it is sitting like dead inside the house :(

I wish you to have a new customer case soon as a lawyer to earn the money you need for a good battery and next summer to send us more crazy videos!

BTW can you explain how you are going to connect the led power supply with the controller & pump & motors temp sensor ?

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Re: 5200W stand-up scooter with air suspension

Post by alex_2d » Dec 23 2018 3:45am

10,000 is just a run-in :-D I don't see any nodes that require maintenance yet :)

Most sad to look at the disassembled scooter.. but such is life :)

The wiring diagram is not very complicated. In the controller settings, the temperature at which the contact (p1\p2) is closed to the ground is set.Which leads to the inclusion of power supplies and pumps.
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