Go Kart Tommy Zheng

The Problem

Design, build, and test a drill powered go-kart that will be competing on three different courses: Drag strip (acceleration/top speed), road course (handling/control) and super mileage (endurance/efficiency). Use materials such as: one sheet of plywood, one drill, and a budget of twenty-five dollars. Build a Go-kart to support at least one hundred pounds.The Go-kart will be test and evaluated by our team by collecting data for the overall performance. This Go-Kart must be completed with all functions by the end of the fourth marking period.

The Research

This image shows another way we can use drill to possibly move the wheels. The head of the drill might offer less friction than if the drill was directly connected to the wheel. We are undecided when it comes to the final design but this is just reattach.

Our design of the steering wheel will be based off of this video and design. We will use the string tied to the pole and tied to each wheel and will turn with the steering wheel.


The drill will power the go kart by being in a mechanism that is connected to a bike chain. This connection will be by extension as the connected drill will be attached to an extended bike chain. This design can work very well as this design imitates an actual bike chain.

The Design

Top Left-Body

Go kart body design is finalized in the top left corner. Have a board that is 4'x2'. On the bottom there will be four 2x4's fastened together by screws to fame a frame. This frame will give the wheels a place to screw to and lift the kart off the ground providing extra strength.

Top Middle-Steering

This is the final design of the steering mechanism. The design will consist of a string that is connected to a pole with a steering wheel on top. The string will also be connected to the two wheels so when the steering wheel turns so will the wheels.

Top Right-Electronics

Bottom left is the design of our electronics. We plan to have working turn signals and a horn. Both will be done with a Arduino and we will use code for the lights and horn

Bottom Left-Throttle

This drill trigger has a loop of string tried around it. The loop will have another string that connects to a boards next to the steering wheel. When pulling the string the loop will tighten pulling the trigger.

Bottom Right- Brake

The brake will consist of four brakes on each wheels. They are all connected on the inner side of the wheel and will each have a string. Four string combine in the middle and tied to one string that will connect up to the steering wheel. When pulled on the one string all four brakes will activate creating friction on the wheel and slowing the go kart.


This is our final design of all four major components of our go-kart. Brakes, wheels, body, and steering all are included in this Onshape document that is completed by all four of my group.



This is the individual parts that Justin, Jordan,Jimmy, Xavier, and I created and assembled to create the final design that you see above in the design after this we exported this to a PDF and into the X-carve to cut out on the shopbot

ShopBot cutting

This is the wood on the Showbot being cut in a time of 10 Mins. We included a total of 10 tabs in both of the body pieces. We used a 1/4 drill bit for the whole cut out. After taking it out of the Shopbot we took it to the belt sander and hand sanded all the parts including the mortise and tenon.

Fully Assembled Body

This is our final and fully assembled that was cut from the Shopbot. The back board are cut and mortised and tend end. We used the Shopbot to cut the tenon end in the back board same thickness as the plywood .5 Inches and The mortise was cut also using the Shopbot. We also added the four 2 x 4's on the bottom to strengthen the frame and also they have a dado in the center to accept the wheel rod and wires.

The Back Board Brace to Provide Strength

We took a 2' long 2 x 4's and cut a 45 degree on each end to match the contours of the backboard and the base. To attach the 2 x 4's we used wood glue and screws on each of the ends and it really strengthened the back board to the base so that it can support the force that will be applied when someone is sitting in the Go-Kart.

Jordan and Tommy spray painted the PVC

Steering: To start the steering we drilled a 1 inch hole 3 feet and 1.5 feet in the base to accommodate the PVC pipe. Then we spray painted the PVC green and the head of the steering wheel yellow. Then we assembled the head of the steering wheel to the pipe using the Instamorph. Then we attached the steering to the go-kart using a tenden.

Jimmy drilling back piece to wheel well

Wheels: For our wheels we used two .5 inch thick axles for the front and back wheels. When adding the wheels to the axles we realized that one of them was slightly bent. We came up with a solution by adding bolt to the middle of the axle where it was bent. We then added the wheels to the base and screwed a piece of wood to the bottom of it for more support.

STeering system

Steering system consist of the PVC pipe with a 1/8 bit to fit the string witch travels to each of the wheels and as the PVC twist so will the wheel making the Go-Kart turn. the string is attached by running each side through a I-bolt on the bottom of each wheel well.

Created By
Tommy Zheng


Created with images by skeeze - "nascar racetrack auto racing"

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