My new (to me) sprint kart

[Takumi788]

Just wanted to show you my newest toy and see if anyone else is into karting because I could use a lot of advise.

I picked up two sprint kart frames for $200 from a friend that had them laying around in his garage. I couldn't pass it up seeing as one rolling chassis usually goes for $600 plus. This is what they looked like when I bought them.





My plans are to build the green one into a fun kart for autocross, parking lots and around the yard. Probably going to sell the blue one.

I bought a harbor freight 6.5hp engine for it for $100 bucks. Seems like these are quite popular with the karting world. I immediately removed the governor and ordered a whole bunch of parts from bmikarts.com.

I needed:
- 15 degree motor mount
- New chain
- 12 tooth Clutch
- 59 tooth Sprocket
- Seat mounts
After these were installed I had a running kart. It moves pretty good. It gets up to 30 pretty quick seeing as I have a really high gear ratio on it.

I just ordered:
- Super stock exhaust
- Air filter and adapter
- .036 main jet
- Fuel pump and top plate
- 18 lb valve springs

I think this should keep me busy for a while and through the long winter months when my FRS sits in the garage.

Anyone else into sprint karts? I could use some help with the alignment because my kart under-steers terribly.

Ill add more pictures asap.

[King Tut]

Originally Posted by Takumi788

I think this should keep me busy for a while and through the long winter months when my FRS sits in the garage.

Anyone else into sprint karts? I could use some help with the alignment because my kart under-steers terribly.

Ill add more pictures asap.

Needs dat square setup bro.

[Ammonia]

I don't understand how an adult male can fit on that.


Looks fun though

[Takumi788]

Originally Posted by Ammonia

I don't understand how an adult male can fit on that.


Looks fun though

I'm a small adult male. I like to think I'm F1 driver size. My friends refer to my size like Jeremy Clarkson refers to Richard Hammond. lol. I'm 26 years old 5'10 and 140 lbs and fit on it with ease.

My friend I bought it off is 6'2 and average build and he fits pretty snug.

[ML]

current pics?

[Takumi788]

After a few weeks of tinkering and waiting for parts shes finally done. Better pics to come.

[ML]

pic don't work

[DIM]

Originally Posted by Takumi788

After a few weeks of tinkering and waiting for parts shes finally done. Better pics to come.

Post some pic's up! The link is broken.

[Turdinator]

There is lots of info online about tuning the chassis for karts. A lot of it revolves around getting the inside rear tyre to lift of the ground at the right part of the corner. So altering the chassis' stiffness with the bars and axle has an effect as well as the track widths front and rear. Oh and of course air pressures and different tires.

I haven't played with karts for a few years so my memory is rusty on the specifics but i think generally if you are understeering you should narow the front track or increase the rear. Generally narrower means more grip. You can also play with the toe and akerman if you are keen.

Find a local track, bring some tools and have a play around with different settings.

[Takumi788]

Here is the pic I thought I posted up there. I sent my phone in for warranty work bc I cracked my screen. The phone I am currently using is so old it doesn't have a camera. I suppose I could find an actual camera to take pics. lol

I took some go pro video I will post as soon as I get home.