Go Kart Frame Plans – How to build a frame

go kart frame
Building a go kart frame is straight forward. Arrange and brace the steel tubing on your workbench, tack weld the frame together, then weld everything up. We will focus on the base frame and bumper, then move on to other components in the next page.

sketchup go kart

Go Kart Frame Plans

The go kart frame plans show how to build a 2 seat go kart, step-by-step, with all of the correct gauges of steel tubing, sheet, and plate. So lets start with the base, which is made of 1″x1″x11 gauge square tubing.

go kart frame with nailsSquare and Secure the Frame Tubing

In order to make sure the base frame is level and square, set it up on a level work space.  I used a piece of plywood (OSB) on my workbench and a square to position the frame sections, then used nails to secure the tubing. The reason why I did this is because as you weld, the tubing will warp slightly at the weld. Bracing the frame will prevent warping and keep everything square. The next step is to tack weld the frame into place.

tack welding steel tubing together

Tack Weld the Frame

Tack welding the go kart frame is easy. First,  make sure the tubing matches up (notice how I used a straight edge in the above picture to make sure the tubing was on the same plane). Next, make a small tacks at the tubing intersections. I made four tacks at each tubing joint. Finally, remove the nails.

go kart frame build

Weld Between the Tacks

Welding the tubing joints between the tack welds will give you great results as the go kart frame is already stiff. To avoid warping, focus on one joint at a time:

Weld one joint side, then flip the frame and weld the other side of the tubing.

Double check all of your welds for the base frame, then move onto the bumper.

go kart bumper

Bumper

Do the same bracing, tacking, and welding as before with the bumper. Make sure you have the 5/16″ pedal holes drilled exactly in the center of the tubing 1 1/8″ from the edge of the tubing. These holes will serve as the pivot point for the brake and throttle pedals.

grinding down welds

I do not advise grinding any welds down on the main part of the frame. However, for aesthetic purposes, its ok to grind down the bumper welds to smooth out the edges. First, I ground down the welds with a grinding wheel on my angle grinder, then used a sanding wheel to polish and smooth out the grind marks. The end result was great!

Alright, we are making some great progress now! Next up is the go kart axle.

Plans | Materials | Cut | Frame | Axle | Floor | Engine | Seat | Steering | Brakes | Throttle | Extras | Paint | Final Assembly |


29 thoughts on “Go Kart Frame Plans – How to build a frame”

  1. Sir i want to know how to fix front and rear suspension wheel and break and acclerator can i get the video plzzzz

  2. When cutting the bumber, the plans say for 22.5 degree on chop saw or 67.5 on a protractor…my chop saw is measured by 5’s, however I do have a digital angle finder…could you tell me the angle I would be looking for when using that?

    1. Digital angle finder is good only if the steel is on a perfectly level surface. 67.5 degrees…Basically, flat is zero degrees, and 67.5 degrees is 22.5 degreees off of 90 degrees. When a chop saw cuts at zero, it is acutally cutting a 90 degree from level, which is why chop saw is 22.5 and protractor/angle finder is 67.5

  3. Can u tell me the complete step by step procedure of making go kart racing car for college project purpose.
    I’m a bit confused and don’t know from where to start.

    1. Himanshu, please understand that college is much different than school was up until this point in your life. You will need to work hard, and figure things out on your own. I wish you luck, and please give all the effort you can into making it work, because nobody is going to give you a complete step by step guide for building a race kart, as it is impractical for anyone to do that. Race karts are precision built by reputable kart manufacturers and making a diy race kart is no small feat. Again, good luck and put hard work into your project and you will reap the rewards of how much effort you put into it.

  4. I want to put a roll cage on my cart. What are your recommendations as far as what type of steel rods and where I should weld? I assume 1 in square like the frame and go from front to back. anything else? thanks

    1. Go to a local steel manufacture and order the steel in the dimensions needed. They might already have done in those dimensions but if they don’t they will charge you extra because it’s a custom order.

    1. so you can turn the go kart off in an emergency, its called a kill switch and is essential for safety. If your throttle sticks or your brakes fail or anything else, that is there for you to access easily to turn off the engine.

  5. To make drive wheel turn faster for moer speed how many tooth clutch sprocket and drive sprocket would you recommend for #35 chain.

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