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 Electric Skateboard revamping
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Jerry
New Member

2 Posts

Posted - Sep 12 2006 :  4:13:28 PM  Show Profile  Reply with Quote
ok...so...i found an electric skateboard off ebay, that the seller did not put a reserve price on it. I was happy, and ended up buying it for $50, with shipping!

Its a good board. especially for the money. but after a couple days, i evidently screwed it up. it said to not charge it for more than 8 hours, and I left it charging overnight, and poof, now i cant get it to hold a charge. So i figure, ill take it apart and upgrade the parts and turn it into a personalized electric board.

problem is, i dont know where to start for parts, as Im on a college student budget. I know i at least need to upgrade the batteries.

here, let me start by listing the specs (as far as i can figure them out) of the skateboard, stock.

the batteries were two Lead Acid Batteries, 12volts, 4.5AH. (http://www.mgelectronics.com/productdetails.cfm?productid=172) pritty standard battery, as far as i can tell.


the motor is a 200W, 24VDC motor. (about 2.7" diameter) uses a ribbed belt to move the wheel (one wheel in the back, attached to the motor, two wheels in the front, attached to the steering mechanism) (http://www.unitemotor.com/unite/en/Products.asp?ClassID=0552417172812961)


the controller is DC24V. i am 90% sure (http://yi-yun.com/product_detail.asp?cid=101&id=680) is it. thats the same company, and thats the closest looking item they sell. Its just not explictly written on the controller itself.


the charger is Input - AC 100-240V 50/60Hz 1.5A, Output - 24V 1000mA
(cant find a link for this specific charger...)

aside from powering the skateboard itself, i can switch on 3 white LEDs in the front and 2 red ones in the back. I dont think it would draw too much more power, but i figure its worth mentioning anyway.

the entire thing goes simply by pushing my foot on a button on top of the board. there is no varience to the speed. its a simple, complete the curcuit type button to make it move.


so...what i need is this:

*better batteries for longer life. right now, i can get at most 2-3 miles out of it before i have to get off and walk it up slight inclines.
*a stronger motor to move faster and make it up hills.
*maybe, depending on the motor, change to a chain, instead of a belt pulling system. seems like the belt could fail after extended use, and if im putting more power and going uphil on it, chain might be the wait to go.
*and i have no clue on where to begin for a controller or a charger, or if i will even need one.

i guess my problem is i dont know enough about what parts are compatible with what parts...so im hopeing the experts here can help me?

the essembly for the batteries and controller + wires has to fit inside a 4.25" X 3.25" X 12" box. the motor needs to be the same diameter, but length doesnt really matter. though, if its the same length, things would be easier. :-P

any help you could give would be greatly appreciated. either wut specs work with what specs, or actual parts for me to look at. thank you in advance!

Aaron Cake
Administrator

Canada
6718 Posts

Posted - Sep 15 2006 :  3:57:38 PM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
The motor looks like a standard scooter motor. So it's likely you can just search eBay for "scooter motor" and find a bunch that will easily fit.

Same with the controller. There are 36V versions that are much more powerful then your 24V controller.

Those batteries sound pitiful. You can find much better batteries by going to a local supplier. Try "batteries" in the phone book.

HOWEVER there's no way you are going to fit this equipment into the space you have. Probably better to start from scratch and design a board around the drive components.
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Jerry
New Member

2 Posts

Posted - Sep 16 2006 :  02:29:33 AM  Show Profile  Reply with Quote
ok. well, i was thinking about going scratch at this point anyway. my main thing was i really liked the front wheel suspension and steering mechanism on this board. Ok. I thank you very much for you're help. Ill let you know when everything is finished. If you have any sugestions on what numbers I should be looking at, as far as AH in the batteries, let me know.
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Aaron Cake
Administrator

Canada
6718 Posts

Posted - Sep 16 2006 :  10:43:17 AM  Show Profile  Visit Aaron Cake's Homepage  Send Aaron Cake an ICQ Message  Send Aaron Cake a Yahoo! Message  Reply with Quote
You can reuse the suspension on your new board.

As for batteries, you want as much AH as possible. I presume that you will be using lead acid and not advanced batteries like NiMH due to cost? If that's the case then you want as much lead as you can get. On my scooter, I have a pack that is 28AH at 12V and 14AH at 24V. I've never exhausted the pack. You will want at least 10AH to get any usable range.
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