bassiclyLouDog wrote:usually when you overvolt the controller will either work or it won't. My e300 was 24v, it would not respond to throttle. The lights came on and the throttle just went click.
I got a 36v controller like used in the MX500/650 dirtbikes. It runs 48v easily. I tried 60v 12ah and it blew. it started moving, went click and died.
I tried 7ah batteries and it runs 60v just fine. When I bog it down it gets real hot and shuts down, but will run again after a minute.
I experimented with some 4ah nicds....I ran a 36v 12ah pk just fine. Then I accidently ran the pks in series for a 96v 4ah pk. The controller did not blow, but when I hit the throttle, it stuck. so everytime I hook it up to any volt it just runs full throttle.
so low capacity high volts will cause the throttle to stick.
Also I've been overvolting 24v and 36v motors for sometime. They always get warm as you should have noted in the past.
That being said when you say it got hot, do you mean a lot more than normal overvolt?
I ran a 250watt on 48v and it got super hot quick and smelled like burnt copper.
I upped it to 60v and it burned out super quick, but man was it quick!
you should get a decent shelf life out of the 250 on 36v. If you smell copper, just get a 350watt for $35.
bassiclyLouDog wrote:36v 350watt is a bit more expensive than a 24v 350watt, but there would be more advantage. The motor can handle 48v!
The motors take a lot of abuse period. on 60v my motor was still sputtering and smoking trying to go forward. My 1k had a completly wore brush and had smoked a bunch and I was still running it on 48v. You'll notice they start to lose speed, but that's well over time. My 2 650s are completly different, 1 is 3-4mph slower. So I keep it on 48v and the other on 60.
I would get a replacement motor and you have it handy....you can always find some use for a motor. heck run 2 motors...a little hard with your gokart, but you might come across a way.
1 more bit. out of the 24v motors, the 250watt is like 13.7amp and the 350watt is 19.2amp current. amps times volts(36v overvolt) and you see the 24v 350watt motor puts out 691watts compared to the 24v 250watt 493watts.
so you will notice a change for sure. Is it worth $47? depends on what you want.
bassiclyLouDog wrote:so here's what I think....the kids may have tried to ride a couple kids on the cart, bogged it down, and blew the fuse. When you tried to charge it, the controller shorted out. you experienced the battery to motor on/off switch. When you sat on it and turned it on it was like straight battery amps to motor. it's trying to spin at 3800rpm, but you're holding it down. The excessive load on the motor burned it up. The motor is running slower because it is charred.
I don't know why your throttle blinked.
That really sucks about your motor. time for a 24v 350watt you will see a lot more power! the 250watt motor you had was 13.7a current which is 493watts on 3 batteries. the 350watt is 19.2a current which is 691watts on 36v.
if you have the abilities I'd run 2 350's on 5 batteries. that kart will fly! I just rebuilt my dual motor 300 and forgot how much kick it had. It tops out around 20-23mph and really pills on take off....I should break the chain and swap the 80t for the 44t!
bassiclyLouDog wrote:good deal. you'll love it and it will run longer than stock.
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