Open Source DC Gokart Controller

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Thalass
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Open Source DC Gokart Controller

Post by Thalass »

I've been looking at Paul and Sabrina's 144v dc controller recently. I thought a toned down version could be good for a 48v go kart. I also want to do a little toy kart for my daughter, similar to BJ's Big Red Car. My stepdad is a junk collector, and at some stage he acquired a little kid's pedal car frame that would be perfect. But of course something like this would be overkill for a little 12 or 24v toy :P


But I think it would be great for a full size gokart controller.
I'll drive an electric vehicle one day.
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Taffy
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Open Source DC Gokart Controller

Post by Taffy »

There is one already out there, it was made by a uni and the open sourced its design. Cant remember who made it now though, will try and remember...
Paul's has advanced a little beyond simple and basic lol.
Last edited by Taffy on Tue, 19 May 2009, 15:25, edited 1 time in total.
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stuartri
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Open Source DC Gokart Controller

Post by stuartri »

May be worth looking at the following web site

http://www.robotpower.com/products/osmc_info.html

If you subscribe to the forum there are some very knowlegable people building controllers.

Regards Stuart
vetinavan
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Open Source DC Gokart Controller

Post by vetinavan »

I modified an electric jeep for my kids. Uses 2 100 watt 24V scooter motors & 3 12 SLA batteries. I has 6 forward speeds & 2 reverse done very simply with half a dozen relays & some microswitches. No good for a car of course but works really well for the kids.
Can supply you the details if you are interested.
antiscab
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Open Source DC Gokart Controller

Post by antiscab »

welcome to the forum vetinavan.

a contactor controller is cheap and easy for low power.
however you have very poor control over torque, and only step-wise control over speed.

is the electric jeep you made for your kids on the EV album?

Matt
Matt
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vetinavan
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Open Source DC Gokart Controller

Post by vetinavan »

I realise all the limitations but the kids drive it mostly flat out anyway.
No, it is not on the album.
Neither is my latest project - a VW Polo EV.
Have started taking a few pics of the adaptor & coupling as I am maching them. Still aquiring parts.
Haven't got any pics of the kid's jeep but that can easily be rectified if I can find the camera.
antiscab
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Open Source DC Gokart Controller

Post by antiscab »

ah, i was hoping for more interesting conversions, kinda like otmars couch

definately recommend adding to the evalbum (even though i admit my own pages are both ridiculously out of date).

Matt
Matt
2017 Renault zoe - 25'000km
2007 vectrix - 156'000km
1998 prius - needs Batt
1999 Prius - needs batt
2000 prius - has 200 x headway 38120 cells
BjBlaster
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Open Source DC Gokart Controller

Post by BjBlaster »

I can't wait to build another one! The Big Red Car is still going strong, and I gave up on the Mk3 Big Blue Car for the time being as the frame is too heavy. I took the kids to school the other day in the BRC... What a blast! 24V is the future of school transportation! 48V would be awesome for big kids, but for the youngsters I think it's a tad of an overkill :) How cool is Otmar's couch!
Last edited by BjBlaster on Mon, 10 Aug 2009, 20:48, edited 1 time in total.
If it's stuck, force it. If it breaks it needed replacing anyway - bj's shed
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Thalass
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Open Source DC Gokart Controller

Post by Thalass »

Haha awesome!

Stuart: I've saved that link on my laptop. It has since died, of course, but I might be able to fix the laptop, maybe, so it's not the end of the world *cries*

Vetinavan: Is that one of the old metal Jeep pedalcars that they used to make? I vaguely remember my cousin had one of those when we were little, and I think my uncle converted it to electric just before they got rid of it for some reason. It was a nifty little machine! A relay based controller would be cheap. But in my head a little kids car would be practice for a full size one, so I want to try and build a proper PWM controller and all that.
I'll drive an electric vehicle one day.
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