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My kart looks very similar to yours except it is electric and goes 50mph.

Up the voltage to about 52v and the brushless motor has enough power to propel just over 300lbs to 30mph with proper gearing. 54v would also work using four 12v batteries and one 6 volt in series. ---------- Post added at 09:57 AM ---------- Previous post was at 09:53 AM ---------- Here's...

One 48v brushless motor will have this going 30mph.

Thanks FA. When I studied your karts before it was about the power systems. I forgot about your hand controls. Thanks for the reminder.

I'm thinking more like this. but on a second thought, I already have an extra thumb throttle and think I can secure add it to the existing steering wheel. hmmmm

I've been brain storming how to improve the pedal placement on my Manco Dingo. I've already pushed the pedals out a few inches and now my problem is getting my heels into stable positions while being able to still get to the gas and brake easily. I need my heels to keep me in the seat. Then I...

The Kelly controller comes with the precharge resistor and diode. You want a contactor that is close to your battery voltage and is rated for your max battery amps. Mine is 48v 400amps and I'm running 60v through it. Forward/reverse switch is a $5 single throw dc switch You need another $5...

I like all my electronics. The only thing I would change is up the current rating of the controller from 500amps to 600amps. I went with 96v controller because my motor can handle 96v. If I put this drivetrain into another vehicle with more room I may up the voltage. If anything I wish I had...

So my Ev Manco Dingo has reached the end of its journey. It does very well at straight line speed with lots of stability, but cornering, proper feet placement and room for more batteries are features it tremendously lacks. I just picked up a 2008 Gillard Race Kart Chassis and it will be my new...

I think I mentioned before that the 4 gauge CCA phase wires were getting hot so I just finished upgrading to 0 gauge pure copper. With the original 20/53 gearing the top speed increased 10%, from 47mph to 52mph. Top speed declines as the battery dies since my max voltage does not hit my...

Cool 2008 article from Mythbusters about converting a gas race kart to electric. Read it here.

Are you measuring the voltage at the batteries? If so the voltage drop you are seeing is directly related to the batteries having voltage sag due to the load being placed on them. If the batteries remain cool you can choose to deal with the sag knowing it will only hurt your overall power...

I will admit that the shunt mod can be done better with wire and solder versus just solder like I did, but that does not deny the fact that the shunt mod does work and works very well. My controller is still only warm after driving around for half and hour. It is possible that the 48v...

Good, if the motors aren't getting to warm/hot you are geared properly. If you want more oomph with the same top speed, the shunt mod or larger controllers will provide better acceleration along combined with higher discharge capability from your batteries. Also, you are over taxing your...

The safe way to plan a setup is everything is stronger than your motor. Meaning the controller can send more power than the motor needs and the battery can send more than the controller will take. Using that logic you want a controller that is more powerful than your motor. I see you...

Like I said before, it's not a placebo. As for getting a bigger controller it would safer but not cheaper. The controller and motor combo cost almost the same as the motor by itself so it's almost a free controller. To anyone reading this I suggest trying the shunt mod. Just go to YouTube and...

sid sid sid, you never fail to amuse. This modification is nothing new. Read up. Here's a shunt mod thread from 2008 For over a decade the shunt mod has been proven to increase the current capacity on these chinese controllers. I have a fuse inline with my battery and I also didn't care if I...

Add solder to the shunts to reduce their resistance. Here's a picture of the shunts before I added my solder. The glob that's already there came from the factory. I extended that glob about halfway up that pair of the shunts. The improvement in acceleration is very noticeable and I pull just...

My original gear ratio was 20/53 which had a very strong take off and topped out around 47mph. Yesterday I tried 26/53 which lost a lot of take off but still sped up decently and had plenty of power to get up my hill. It topped out at 53mph before I ran out of room, had plenty of power and rpms...

Mostly was "Powerwheels racers for Adults". They build custom frames and put Powerwheel toy bodies on top of them. Most of their race karts use the Chinese 48v brushless setup and go 20mph but they turn very well.