Transmission

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donman77

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Hi y'all go karters I am wondering where to get a transmission for a 13hp go kart. Maybe one with like 5 gears?
:idea2:
 

JTSpeedDemon

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Uhh,
NOWHERE
There are no gearboxes readily available for small engines.
Much less up to 13HP.
Much less a five-speed.
It just ain't happenin'.
If you want a transmission, and are willing to put a lot of time, work, and money into it, it is possible to make a two speed transmission.
Two speed.
Closest thing is a lawn mower transaxle: https://www.surpluscenter.com/Power...saxles/4-Speed-Peerless-Transaxle-13-1598.axd
But that's a LAWN MOWER transaxle.
With a max. input RPM of 2000.
Best option if you want a transmission, is to do a dirt/pit bike engine since it has a built in transmission.
Not cheap or simple, but it will have a transmission.
Bike engines can be bought from: https://pitsterpro.com/index.php?route=product/category&path=10
Trust me, I wanted a transmission too when I got started, but it's a mostly untouched realm.
But all is not done! Single speed karts can reach freeway speeds! Carsandcameras has hit 70+mph on single speed karts(and one shifter kart)
 

Kartorbust

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None really exist. Outside of using a divorced gearbox with high/low, reverse, there isn't anything that exists as far as several gears. You would be better off getting a single cylinder engine from say an ATV, dirt bike or motorcycle and using that.

I've only ever seen one gearbox that was made for a go kart, but as far as I know, it hasn't been used on a kart. A long time member on here, who hasn't been around for a good while now, Tmans Karts, got a motorcycle engine that was stripped down to just the transmission by a fan of his to use on a kart. This was 2 or 3 or so years ago. He barely posts anything on his YouTube channel anymore (has kind of faded into obscurity). Otherwise, Rather B Welding has been working on a 3 speed with reverse, but nothing much in a bit since then.
 

JTSpeedDemon

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And even then, with RatherBWelding's gearbox,
do you really have the time money, and skills to do it like Chris?
Soooo, don't mean to bust yer bubble, but it probably ain't happenin'.
 

Kartorbust

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You can buy parts over time to build something. If something needs to be machined, it's usually not terribly hard to find a machine shop that can make something if need be, long as you can afford their rates. If you noticed in his video he stated that he more or less got the wrong gears because these were made from powder metal and didn't want to machine nicely.
 
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