Electric Bubble Gum board mk1

Lightweight / Folding / Portable EVs - seats optional
voodoojar   100 W

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Electric Bubble Gum board mk1

Post by voodoojar » Jul 10 2014 8:15pm

I'm not quite ready to post the entire build yet but I finally got all the wiring and 3D models done and assembled the first prototype. I'm really excited about it and wanted to share.

Im still messing with placement in the case so it's not bolted down yet. I actually have a tone of room inside the case so it will get a good bit smaller for mk2.
Image

Runing a 7s2p lion pack with BMS on/off switch and led fuel gauge. Uses a cheap laptop style charger. Here is one before wiring up.
Image

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psychotiller   10 kW

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Re: Electric Bubble Gum board mk1

Post by psychotiller » Jul 10 2014 8:31pm

Sweet!
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Re: Electric Bubble Gum board mk1

Post by torqueboards » Jul 10 2014 10:41pm

Looks awesome! I like that small board. I'm sure, you could even fit it in a backpack almost..

What capacity are those packs? What's your cont. amp and peak amp rating for your pack w/ BMS?
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Re: Electric Bubble Gum board mk1

Post by dirkdiggler » Jul 10 2014 11:03pm

That looks like the smallest e-transporter ever made. You could carry that thing anywhere. Definitely would fit in a small backpack. What are you using for a motor and gearing? The case and gear cover look great. Nice work.

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Gregory   100 kW

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Re: Electric Bubble Gum board mk1

Post by Gregory » Jul 10 2014 11:13pm

Very nice use of a 3D printer.

What ESC are you using for 7S?


1) x5305 Hub Motor in a 24" Sun rim with 10G spokes, Kelly 72601 controller, 74V 10Ah Turnigy LiPo 20C Battery and CycleAnalyst
2) Mac 10T rear hub in a 700C "comfort bike" 15S 5Ah LiPo, stock 28A Xie Cheng controller
3) 38" Longboard, Turnigy 6374, CC Mamba XL2 ESC

voodoojar   100 W

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Re: Electric Bubble Gum board mk1

Post by voodoojar » Jul 11 2014 5:25am

torqueboards wrote:Looks awesome! I like that small board. I'm sure, you could even fit it in a backpack almost..

What capacity are those packs? What's your cont. amp and peak amp rating for your pack w/ BMS?

the pack is 6.4ah with max continuous discharge of 20A I've been running one on my other board and it looks like it will do 1.5-2 hours of mixed riding.

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Re: Electric Bubble Gum board mk1

Post by beto_pty » Jul 11 2014 2:43pm

Gregory wrote:Very nice use of a 3D printer.
Nice catch greg..
Yes very nice enclosure...humm... 8)
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Re: Electric Bubble Gum board mk1

Post by rutierut » Jul 11 2014 3:38pm

Belt enclosure looks so clean!

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Re: Electric Bubble Gum board mk1

Post by torqueboards » Jul 11 2014 3:54pm

Is that XT60/90 port for the on/off or for battery charging? Why no motor cover since there is a pulley cover - clearance issues?
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Re: Electric Bubble Gum board mk1

Post by voodoojar » Jul 11 2014 4:04pm

torqueboards wrote:Is that XT60/90 port for the on/off or for battery charging? Why no motor cover since there is a pulley cover - clearance issues?


I want to do a barrel jack but I don't have any at the moment so just put an XT60 for the charger. my next version with have a barrel jack. This board doesn't have any of the cool stuff like the LED voltage meter and led on/off switch I just wanted to get one running to make sure nothing rubs or breaks too easy. It also still has the plastic motor mount I haven't gotten a chance to weld on the aluminium ones yet. and I'm really curious if a plastic one will last 1 ride.

I suppose I could make one for the motor it just ends up looking like a big coke can on the back, thought it looked cleaner this way. Do you think that's something people want?

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Re: Electric Bubble Gum board mk1

Post by torqueboards » Jul 11 2014 4:53pm

voodoojar wrote:
torqueboards wrote:Is that XT60/90 port for the on/off or for battery charging? Why no motor cover since there is a pulley cover - clearance issues?


I want to do a barrel jack but I don't have any at the moment so just put an XT60 for the charger. my next version with have a barrel jack. This board doesn't have any of the cool stuff like the LED voltage meter and led on/off switch I just wanted to get one running to make sure nothing rubs or breaks too easy. It also still has the plastic motor mount I haven't gotten a chance to weld on the aluminium ones yet. and I'm really curious if a plastic one will last 1 ride.

I suppose I could make one for the motor it just ends up looking like a big coke can on the back, thought it looked cleaner this way. Do you think that's something people want?
Supposedly, that's what people want. Looks nice though without it. I don't find any issues with it being open but I guess a motor enclosure would be a bit better for riding in rain. Barrel jack would be nice..

What infill did you print your enclosure 100%? Plastic might last a few blocks if it's bolted on. If it's just hanging on there tight it most likely would fall I would think once that motor kicks on start.
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voodoojar   100 W

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Re: Electric Bubble Gum board mk1

Post by voodoojar » Jul 11 2014 4:57pm

All the Plastic pieces are going to be injection molded once I finalize design. So infill is only like 20% right now and they are only 2.5mm thick. The plastic mount is put on with PC-7 epoxy it's really only there so I can give the welder a visual.

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Re: Electric Bubble Gum board mk1

Post by got92 » Jul 12 2014 10:25am

voodoojar wrote:All the Plastic pieces are going to be injection molded once I finalize design. So infill is only like 20% right now and they are only 2.5mm thick. The plastic mount is put on with PC-7 epoxy it's really only there so I can give the welder a visual.
it will bend for sure, i think a lot too. MIne is 9 mm thick with a 50% infill and it bend for 1 mm, it's not so good for the belt. But for a couple ride it's not a problem, right? :D

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Re: Electric Bubble Gum board mk1

Post by Carbon » Jul 13 2014 11:38am

When will full production or beta testing be available? Is this going to be on a crowd funding site?

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Re: Electric Bubble Gum board mk1

Post by voodoojar » Jul 13 2014 6:09pm

No solid plans yet.I got a bunch of motor mounts welded today and I should have 4 boards ready sometime this week. I was planning to pass them out to friend to ride around and GPS. I'm also working on a website and a short demo video.

I haven't decided whether or not to try crowdfunding there are some negatives to it that I really don't like. I have almost enough parts to make 25 boards so I might just star t there and see if they sell. I'm looking at a sale price of between $400-500 depending on how long it takes to assemble.

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Re: Electric Bubble Gum board mk1

Post by voodoojar » Jul 20 2014 6:40pm

Just finished the first boards electrics. This is a prototype for testing so I left the whole Arduino in there. This is right before I wire it into the case for the on/off switch and charger.
Image

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Re: Electric Bubble Gum board mk1

Post by Nikimce » Jul 20 2014 8:54pm

Right on. Looking good. These little rockets are a great idea.

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Re: Electric Bubble Gum board mk1

Post by voodoojar » Jul 24 2014 7:37pm

I turned it on first the first time a minute ago and got so excited I made a video of it.

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Re: Electric Bubble Gum board mk1

Post by verruckt » Jul 25 2014 3:27pm

I really like your design, it looks super clean.

Have you had a chance to test the acceleration at 7s? With such a short wheelbase it seems like it could get a little squirrely at launch :lol:

I've been riding longboards for years, and even still I have to brace myself for that initial acceleration at 6s with my LaGrange setup.

Great work so far - thanks for keeping the thread updated with your progress.

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Re: Electric Bubble Gum board mk1

Post by voodoojar » Aug 16 2014 8:47pm

Just finished another demo board. I'm hoping to have 4-5 demo boards ready for the Maker Faire here in Atlanta October 4-5. I also working on some large sized demo boards (36" deck) as well.
This one has an older battery pack on it while I print up some new cases that are going to be 2 cm thinner.

My favorite color combo so far.

Image

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Re: Electric Bubble Gum board mk1

Post by Tigerpolis » Aug 17 2014 5:08am

Looks nice! Where did you get the battery?

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Re: Electric Bubble Gum board mk1

Post by BadWolf » Aug 17 2014 5:49am

Looking good! How/Where did you route the cables from the ESC > motor?

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Re: Electric Bubble Gum board mk1

Post by voodoojar » Aug 17 2014 7:08am

The motor isn't plugged in in that picture I plugs into the the case right in front of it. That picture was taken before I screwed the case to the board so I hadn't plugged the motor in yet.

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Re: Electric Bubble Gum board mk1

Post by papertriping » Sep 12 2014 4:16pm

hey Voodoojar! Thats one awesome looking e-board! congratulations!

Could you please please list down the component you have used on your E-board- namely: motor, ESC, Battery , Reciever and tell us something about how you hooked up throttle via arduino.

Also, how is the board performing? What is the top speed? How long/far can you travel before the Lipo runs out of charge? How much run time do you get? How does it perform on inclines, up hills etc.

I just started work on a similar build. This is what I think it will look like
http://pho.to/76vgi

With my build I dont want to use a traditional RC car Transmitter receiver- so I thought of using a wifi receiver and controlling throttle with my smart phone.
However in your video- i see u using a small single button transmitter- could you tell us something more about this an how u hooked it up? Some more pictures would be awesome!

This information will be of much help to me- Cuz i'm absolutley clueless about what components to buy.- I've started a thread for just this here
http://endless-sphere.com/forums/viewto ... 74#p946174

Thanks!
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Re: Electric Bubble Gum board mk1

Post by razad7@gmail.com » Sep 14 2014 7:19am

Hey amaizng board.
I'm very interested in your Li ion setup.
What batteries are they (specs) ? Where did you get them?
How long to they last - equal to what Li-Po?
also - what esc are you using and how do you charge them?
thanks!

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