Stand-up BF.Scooter "Version 2.0a"

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

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Stand-up BF.Scooter "Version 2.0a"

Post by alex_2d » Aug 25 2019 11:54pm

Well... I start making the first batch of scooters "version 2.0 a"
If anyone is interested in this topic described a long way to creating a prototype and getting a tremendous amount of experience.
In this topic I will to describe move production and tests.

1. General information
-Maximum speed - 110km\h
-Acceleration 0-100km\h - 6 seconds
-Weight - 66кг
-Maximum load - 200kg
-Range of mileage on one charge, at a constant speed of 100km\h - 60km
-Range of mileage on one charge, at a constant speed of 60 km\h - 110 km
-Range of mileage on one charge, at a constant speed of 30km\h - 160km
-Minimum battery charging time 0-100% - 2 hours
2. Engine.
-Engine type-Motor-wheel, with integrated liquid cooling system.
-Two sets of hall sensors.
-Tubeless, rain tire for go - kart Bridgestone Regen YNP
-Maximum power - 27квт
-Operating temperature of magnets - up to 150 degrees.
Class ingress protection - IP67
3. Accumulator.
-22s1p Li-Ion 60AH 7C LG NMC
-Voltage - 66-92.4 v
-Capacity - 4.8 kW\hour
-Maximum discharge current - 400A
-Long-term discharge current - 250A
-Maximum charge current - 60A
4. Suspension.
-Rear - multi-link
-Front - lever type
-Suspension travel - 160mm
-Shock absorbers - pneumatic, with adjustment rigidity and rebound.
5. Frame.
With integrated liquid cooling system and concealed wiring. All structural elements have been designed to provide specified strength characteristics, with minimum weight, using computer simulation.
Class ingress protection - IP65
-Basic elements design - machined, aircraft-grade aluminum (D16T)
-Power of elements - titanium(OT4)
-Steering - carbon
-All movable elements are mounted bearings - SKF
-Bushings shock absorbers - kaprolon(polyamide-6)
-Steering Cup - two, tapered, roller, angular contact bearings, with a maximum load of 45 tons
-The maximum static load of all components and parts in the Assembly, within the elastic deformation - 650kg
6. Brake system. Own development. Specially designed for mountainous terrain and able to easily withstand any downhill.
-Front wheel hydraulics.
The diameter of the piston - 33mm.
-Rear wheel hydraulic ventilated + regenerative braking.
The diameter of the piston - 33mm.
Electronic brake - with brake force adjustment from a separate trigger.
7. Optics. Based on led (Cree CXA2540).
-Type - led headlight with lens
-Brightness - middle lm 4600 + 4600 lm far
-Number of lights - 2
Power one lamp - 36w
8. Control. Two, multi-functional, shockproof trigger under the thumb.
-The principle of the hall sensor
-Mechanics - ball bearing.
-Materials - milled, aircraft-grade aluminum.
-Multi-function buttons to activate the main and additional functions of the controller.
-Water protection class - IP54 (upgrade under development)
9. Battery charger. On the basis of the server power supply(flatpack2).
-Allows you to charge the scooter 0-100% in two hours, with an efficiency of 92%
9. Electronics.
Controller
-TermoNucular 24f
-Maximum battery current – 300A
-Maximum phase current – 500A
Display
-Multi-function, shockproof, waterproof display, built-in steering wheel.
-Screen protection - tempered glass - Gorilla Glass
-Waterproof, mechanical control keys.
-Protection class display from the water - IP66
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Last edited by alex_2d on Aug 28 2019 4:35am, edited 2 times in total.

tracer11lb   1 mW

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Re: Stand-up scooter "Version 2.0a"

Post by tracer11lb » Aug 26 2019 6:11am

Subbed. Looking forward to this.

Madyicstik   10 mW

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Re: Stand-up scooter "Version 2.0a"

Post by Madyicstik » Aug 26 2019 7:30am

looks futuristic! something like matt damon would drive on mars :)

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ronncat   100 mW

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Re: Stand-up scooter "Version 2.0a"

Post by ronncat » Aug 26 2019 12:57pm

I am BREATHLESS :shock: :shock: :shock:

Your design skills are amazing. Thank you :D

SlowCo   1 MW

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Re: Stand-up scooter "Version 2.0a"

Post by SlowCo » Aug 26 2019 3:45pm

Ah, here is the new thread. I'll be following your progress. Good luck and enjoy building!

blackmobile   10 µW

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Re: Stand-up scooter "Version 2.0a"

Post by blackmobile » Aug 27 2019 7:19pm

Someone linked the other thread on Reddit and I binge read the whole thing for like 2 hours haha. I registered just to keep track.. Now I will have to be patient to see progress on 2.0!

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Dui, ni shuo de dui   1 kW

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Re: Stand-up scooter "Version 2.0a"

Post by Dui, ni shuo de dui » Aug 28 2019 3:39am

Yay, a new build of alex_2d !!

It looks awesome, as always!

Just a suggestion: make sure you make some tests with your clamping system on the carbon rods. They usually don't really like to be compressed (they tend to delaminate after some time).

That thing will be insane, I can't wait to see the first CNC porn pics...
:bolt: :bolt: My electric Ninja 250 clone: 16 000W 72V40Ah A123 cells : :bolt: :bolt:
https://endless-sphere.com/forums/viewt ... 12&t=90032

:bolt: :bolt: My electric Scooter: 11 000W 72V 50Ah LiFePO4 cells: :bolt: :bolt:
https://endless-sphere.com/forums/viewt ... 12&t=75912

blackmobile   10 µW

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Re: Stand-up scooter "Version 2.0a"

Post by blackmobile » Aug 28 2019 4:17am

Maybe OP or someone could come up with a brand logo that would be placed where they red hydrant wheel is. CNC style. Prob something round since it is meant to turn.

BTW I'm posting this on /r/electricscooters to create some hype.

https://www.reddit.com/r/ElectricScoote ... _machined/

AlienRides   10 µW

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Re: Stand-up BF.Scooter "Version 2.0a"

Post by AlienRides » Aug 28 2019 11:14am

Wow, this is amazing, scooter of my dreams. Honestly I would love to have one if you're making multiple, sign me up! If that's not possible, I would love to come visit you just for a chance to ride that thing, and maybe make a little video on it :)

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fechter   100 GW

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Re: Stand-up BF.Scooter "Version 2.0a"

Post by fechter » Aug 28 2019 1:19pm

I like the folding mechanism for the handlebars. Looks like that CNC machine is going to be busy for a while.
"One test is worth a thousand opinions"

SlowCo   1 MW

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Re: Stand-up BF.Scooter "Version 2.0a"

Post by SlowCo » Aug 28 2019 1:47pm

AlienRides wrote:
Aug 28 2019 11:14am
I would love to come visit you just for a chance to ride that thing, and maybe make a little video on it :)
That would be quite a long distance trip just to ride that scooter...

alex_2d   10 W

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Re: Stand-up BF.Scooter "Version 2.0a"

Post by alex_2d » Aug 30 2019 12:06am

Thank you so much for the positive comments about my work!
At the moment, the situation is as follows. I am re-equipping my workshop to improve the quality of production and reduce the costs of products. I want to replace my CNC by the new one, more precise and efficient. It is also necessary to buy equipment to reduce the number of mediators. In parallel, the design team is engaged in the creation of a website with an interactive model of the scooter. We are also working on the logo and the brand name as a whole.
The site should be ready in a couple of months.
The first scooters would be ready by the end of the year. For now i have launched 4 units production and 2 of them have been already prepayed. RnD costs were very high because of small number of produced devices. Thats why for now i have calculated the price about $25.000 for the unit. But depending on the fact that I'm in a growth stage for now, i can lower the price to sell the last units with a good discount to continue research, development and to improve and expand. I'm ready to discuss the price around $19.000 in the case of 50% prepayment and $17.000 in a case of full payment now.

blackmobile   10 µW

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Re: Stand-up BF.Scooter "Version 2.0a"

Post by blackmobile » Nov 06 2019 5:36am

Would be nice to have some update..

Silenthunter   1 kW

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Re: Stand-up BF.Scooter "Version 2.0a"

Post by Silenthunter » Nov 17 2019 12:15am

wow this is amazing!!!

blackmobile   10 µW

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Re: Stand-up BF.Scooter "Version 2.0a"

Post by blackmobile » Mar 05 2020 3:37am

6 months since last proper update :/

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