how much do I need?

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nickydlax

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Hey guys
I'm new to electric go karts, but I have enough experience with gas ones, and even more experience with cars

I'm currently designing a new electric go kart. And I'm wondering if there is a way that I can figure out exactly how powerful it needs to be, depending on the wait of my vehicle. My main purpose here is speed, specifically acceleration.

I saw one guy had a 15-20kw motor on a light kart, his small daughter rode it and got up to 71 mph....which is good, but the total wieght of my vehicle will be a lot heavier, and I don't have the spare cash just to buy it just to see if it goes fast enough, I'd like to have a general idea

Also, random Google searches seem to bring up some pretty expensive motors and controllers. Anyone have any recommendations on a good brand?

Thanks!
 
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nickydlax

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Just an update, my and a few friends are going with the AC-50 144 HPEV volt motor.

Should be crazy fun
80 peak horsepower with 120 peak torque

the kart will weight about 500 without the driver and run for about an hour before it's completely dead.

The only problem will be not killing myself :smiley_omg:
I just want something I wont get bored with. I'm pretty sure this is it if we hook up a small, light, motorcycle tranny to it

this thing will (hopefully) be road legal so we will need some crazy speed
 
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nickydlax

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Dont have any pics yet as nothing has been orderd, but, here is the chasis we will be using :
http://www.ultramaxracing.com/uchassis.shtml

anyways, the last step before ordering anything is figuring out how to take a ninja 250r transmission and putting it on our kart so it will suite us. We want to change the final gear ratio. They have 24.3 inch tires and we have 9. If we could get their gear ratio down from 3.214 to a 1.5-2 we would be very happy. I'm just not sure how to do that. Any help would be GREATLY appreciated!
 
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itsid

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nickydlax said:
Just an update, my and a few friends are going with the AC-50 144 HPEV volt motor.

Should be crazy fun
80 peak horsepower with 120 peak torque

the kart will weight about 500 without the driver and run for about an hour before it's completely dead.
Click to expand...

120 apples weighing 500 tomatoes.. amazing :thumbsup:

(numbers without units is like Oktoberfest without Beer ;))

Anywhoo...
offset chassis??... ah well to each their own I guess :(

pluggin a massive torque electric motor onto a gear box made for a low torque four stroke might result in caries...
just saying ;)

'sid
 
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