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Old 05-13-2013, 04:34 PM
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Hey everyone I'm new to the forums and I've searched but wanted some direct opinions...

I'm looking to build a fun, fast race style kart that is powered by batteries instead of gas.. (Saw some crazy ones on YouTube)

Anyways, for the frame would it be best just to build my own? I've got a mig welder, I have never built a frame before and it needs to support the batteries.
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Old 05-13-2013, 05:34 PM
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In truth, building a frame can be quite a handful. Not to say you can't do it, but you've already got a good challenge ahead of you in deciding to go electric. If it were my call, I would advise scouting for a used frame that you can modify to suit.

Welcome to the forum!
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Old 05-13-2013, 06:50 PM
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Quote:
Originally Posted by toystory_4wd View Post
In truth, building a frame can be quite a handful. Not to say you can't do it, but you've already got a good challenge ahead of you in deciding to go electric. If it were my call, I would advise scouting for a used frame that you can modify to suit.

Welcome to the forum!
Thanks for the reply! I realized this should probably be on the electric build forum, but maybe you could help me...

If I wanted the kart to do 40-50 and drive for about an hour-2 what motor/batteries would suffice?

Thanks!
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Old 05-13-2013, 06:52 PM
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I must apologize right away- I'm not an electric guy- no idea. I can figure my way around circuitry, but that's about it. What I will do is move this thread to the Electric section...
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Old 05-13-2013, 07:12 PM
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Quote:
Originally Posted by toystory_4wd View Post
I must apologize right away- I'm not an electric guy- no idea. I can figure my way around circuitry, but that's about it. What I will do is move this thread to the Electric section...
Thanks a ton! I didn't see that section until after I posted,

Thanks for the help!
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Old 05-13-2013, 07:54 PM
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But now that's it's in the right section, does anyone know which motor/batteries I should run in order to go about 40-50 top speed and be able to drive for an hour or 2?
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Old 05-13-2013, 08:16 PM
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You may be able to take a modify the motor and batteries from an electric golf cart?
I dunno much about electrical stuff either.
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Old 05-13-2013, 08:23 PM
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do some research on google for electric engines/batteries to find hp and battery life. I don't know if this has been done a whole lot but I would love to see it come together it would be a learning experience for all and we will help as much as we can good luck
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Old 05-14-2013, 12:54 AM
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I don't know too much about electric either, but trying for 50mph seems like a tall order.
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Old 05-14-2013, 04:37 AM
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The only reason I was interested in this is because on YouTube I saw a couple videos "50,000 watt go kart" etc and it looked soooo much fun.
Unfortunately they don't post what kind of batteries or anything they used so I have no idea what would give them that power.
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Old 05-14-2013, 04:43 AM
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This is the only think I found on it:

This 50,000 watt electric go-kart by "mfanady" is as eco-friendly as karts get. Powered by eight 12-Volt deep cycle batteries and a 48-Volt 1000 Amp PWM motor controller, it's capable of reaching speeds in excess of 60mph. Video after the break.
Read more at http://www.techeblog.com/index.php/t...4IGcx4bK1JH.99
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Old 05-14-2013, 09:27 AM
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Getting that kind of performance and battery life is going to be incredibly expensive. You are looking at $2000 in batteries alone.

http://www.amazon.com/Optima-8016-10...ptima+Blue+top

The rest of what you need can be found here.
http://tncscooters.com/index.php?route=common/home
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Old 05-14-2013, 11:20 AM
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Quote:
Originally Posted by DaiSan76 View Post
Getting that kind of performance and battery life is going to be incredibly expensive. You are looking at $2000 in batteries alone.

http://www.amazon.com/Optima-8016-10...ptima+Blue+top

The rest of what you need can be found here.
http://tncscooters.com/index.php?route=common/home

thanks for the links, is there another type of battery that is possibly cheaper and only last an hour or so? or even go a little bit slower (30mph or so?)

what is the reason for needing 10 of them?


thanks again for the help!
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Old 05-14-2013, 11:36 AM
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i Was reading the sticky at the top of this forum section and SLA batteries were mentioned as a good battery to use because there cheap and can be recharged easily...

i found these: http://www.batterymart.com/p-12v-18a...ttery-4pk.html
there 18ah, and its a 4 pack.... 18x4 is 72ah...(not sure if thats how it works lol)

Would those work? and does anybody know how long they would last?

also which motor would it work well with if i wanted to go 30-50..


if anybody could answer those questions id appreciate it a ton! I could even try 8 of those batties, 4 on each side of the kart..
i want to make a sweet kart, and ill definitly update and post pictures along the way, i just need to get everything planned out and make sure it will work first.

those optima batteries are EXPENSIVE!
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Old 05-14-2013, 05:11 PM
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You need 10 because I can't do basic math, aside from that, you need 4 to make your 48 volts. Beyond that you can add them in blocks of 4 to add run time. There are other ways to get your voltage, but it adds complexity. You can get a deep cycle battery at Walmart for $89 that would work, but you run time would be low, as well as not being sealed. This means that it will spill if you wreck, and you don't want to take a bath in battery acid. I linked the best, because they are the best. Longer run time, and will last far longer than a cheaper battery.
For reference, I run a trolling motor with a 40 amp draw for about 2.5 hours on a single Walmart battery.
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Old 05-14-2013, 07:46 PM
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Quote:
Originally Posted by DaiSan76 View Post
You need 10 because I can't do basic math, aside from that, you need 4 to make your 48 volts. Beyond that you can add them in blocks of 4 to add run time. There are other ways to get your voltage, but it adds complexity. You can get a deep cycle battery at Walmart for $89 that would work, but you run time would be low, as well as not being sealed. This means that it will spill if you wreck, and you don't want to take a bath in battery acid. I linked the best, because they are the best. Longer run time, and will last far longer than a cheaper battery.
For reference, I run a trolling motor with a 40 amp draw for about 2.5 hours on a single Walmart battery.

gotcha that all makes since, thanks a ton!

Now for the motor controller......would you happen to know my options on that?
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Old 05-14-2013, 09:25 PM
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Quote:
Originally Posted by DaiSan76 View Post
\ You can get a deep cycle battery at Walmart for $89 that would work, but you run time would be low, as well as not being sealed. This means that it will spill if you wreck, and you don't want to take a bath in battery acid.
You are refering to an SLA
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Old 05-14-2013, 09:35 PM
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Quote:
Originally Posted by Gopedude View Post
You are refering to an SLA



No, I am not. I am referring to a deep cycle, that I can open and add fluid to.

The Optima battery that I linked is an SLA that is also a deep cycle.

There is a difference between a Lead Acid Battery, and a Sealed Lead Acid Battery. There is also a difference between a Cranking Battery, and a Deep Cycle Battery.

The reason that I did not suggest the Walmart Deep Cycle that I use for my boat, is that it is NOT sealed.

Did you have any other questions?
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Old 05-14-2013, 09:48 PM
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I stand corrected. Point is, the OP should use SLA's
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Old 05-14-2013, 09:49 PM
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Quote:
Originally Posted by DaiSan76 View Post


No, I am not. I am referring to a deep cycle, that I can open and add fluid to.

The Optima battery that I linked is an SLA that is also a deep cycle.

There is a difference between a Lead Acid Battery, and a Sealed Lead Acid Battery. There is also a difference between a Cranking Battery, and a Deep Cycle Battery.

The reason that I did not suggest the Walmart Deep Cycle that I use for my boat, is that it is NOT sealed.

Did you have any other questions?


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