El Dingo Modifications & Upgrades

[Functional Artist]

I have had tunnel vision lately, workin' on other projects.

The Kart itch is comin' back.

So I have been thinkin' about what can be done to squeeze MORE out of El Dingo.

She moves right along but, I was expecting more.

There seem to be three options:

adjusting the gear ratio. (now @ 5.4:1 maybe try 3:1)

higher voltage. (more batteries now @ 36v maybe try 48v)

or lighter battery pack. (lithium ion)

Hey Sid,

what do you think about the specs on this battery pack?

http://www.ebay.com/itm/36V-20AH-Li...id=100005&rk=1&rkt=6&mehot=lo&sd=192188409628

It's 36v, has a built in BMS, comes with charger & under $400.00.

The drawback is it's only 20 Ah, where my battery pack now is 35Ah but, the difference in weight should make up for some of that.

 

[Kartorbust]

This guy used Chevy Volt modules for his dirt bike build.

http://www.minibuggy.net/forum/projects-progress/22487-yz400a-electric-dirt-bike-build.html

 

[Mr. Spindle]

Time to start digging in cars and other junk for electric stuff, lol, I'd rather gas...

 

[Kartorbust]

The beauty of electric motors is, instant torque at 0 RPM. Rather than spinning up to 2500, it's as soon as you hit the go pedal. I still like gas and oil burners, but do I ever hate having to buy gas on a constant basis. Though charging batteries is equally as bad and takes longer. R/C drivers have done this for years, used to be nitromethane was the way to go, despite sucking to retune every run. I mean nitro engines had the longer run times vs electric R/Cs, and they still kind of do since you can refill the tank faster than charging a battery, but if you have a second battery it's a crapshoot as far as swapping out goes vs filling up.

If electric motors and control modules were not so expensive and a decently light battery setup didn't cost your first born, it would be the way to go. Less maintenance over gas engines, plus more power, relatively speaking.

 

[Functional Artist]

I have had tunnel vision lately, workin' on other projects.

The Kart itch is comin' back.

So I have been thinkin' about what can be done to squeeze MORE out of El Dingo.

She moves right along but, I was expecting more.

There seem to be three options:

adjusting the gear ratio. (now @ 5.4:1 maybe try 3:1)

higher voltage. (more batteries now @ 36v maybe try 48v)

or lighter battery pack. (lithium ion)

Hey Sid,

what do you think about the specs on this battery pack?

http://www.ebay.com/itm/36V-20AH-Li...id=100005&rk=1&rkt=6&mehot=lo&sd=192188409628

It's 36v, has a built in BMS, comes with charger & under $400.00.

The drawback is it's only 20 Ah, where my battery pack now is 35Ah but, the difference in weight should make up for some of that.

Well, after more research NO this bat pack is NOT a good fit.

The motor on ElDingo will draw well over 100A.

The specs on the above mentioned bat pack are:

-Instantaneous maximum discharge current: ≤30A
-Over discharge protection current：≤45A

& the Chevy Volt modules specs are:

-Continuous current 240A
-Peak current 350A

The Volt modules only seem to come in multiples of 24V.

...still looking for 36V bat pack possibilities.

...maybe have to step up to 48V

 

[Kartorbust]

I have no idea of its possible, but could the modules be wired in a series to get to 48v or is that not possible?

 

[Functional Artist]

I have no idea of its possible, but could the modules be wired in a series to get to 48v or is that not possible?

Yes, it's possible.

I was just trying to stick with 36V because that's how the kart is set up. (right now)

Still looking.