GoKart Ryan Cummings

26 January 2017, Day 1: The go-kart project was introduced to us. We were to design and build a go-kart that would be powered by a DeWalt cordless power drill. We researched different aspects of different go-karts in order to understand what we wanted to do. We then began sketching out designs for our kart and researching where we could get materials like wheels and a clutch.

30 January 2017, Day 2: We claimed our piece of plywood so that we could find the measurements that we would be working with. We then began designing the body of our kart, including the back of the seat and the wheels in OnShape. We also cannibalized the rear gears of a bike in order to get a clutch for our rear wheels. Additionally, we began making the electronics for our kart with Arduino, which we decided would incorporate our throttle, turn signals, horn, and speed controls.

1 February 2017, Day 3: We changed our design so that our front was smaller and our turning radius would be larger. We also bought 2x4's and measured out how long we wanted each piece to be, which we then cut out in the shop. We also finished our body in OnShape and assembled it in OnShape. We got our tires and began building the front axle of our kart out of 2x4's. We also continued working on our Arduino control panel.

3 February 2017, Day 4: We finished all of our parts in OnShape and then moved them into a drawing on Vcarve. We then used the Shop-Bot to cut out our base and our gears. Then, we used our 2x4's to build more of our body. We then finished our Arduino control panel.

7 February 2017, Day 5: We finished our front axle and we used an all-thread rod for our rear and front axles, which we added our wheels to. We also attached our gears to the rear axle. Additionally, we finished our front axle and attached it to our frame. We also attached our seat to our body. Unfortunately, our front axle was too loose and we needed to add additional washers to the connection. We fit our body together with mortise and tendons.

Incomplete Front Axle

Complete Front Axle

Base With Rear Axle Attached

Attached Front Axle

Basic gokart

13 February 2017, Day 6: We fixed our front axel connection by adding bigger and more washers to the pin that we placed through the body and the front axel for their connection. We also built supports and used OnShape and Vcarve to make a support on bottom so that our body would not break apart. We then changed our brake idea from a piece of wood being held on our rear wheels to a brake pad, operated with springs and string that will rub against a disk that we put on our rear axel. We also added a piece of metal to our seat that we planned to use for steering. However, our brake did not have enough friction to stop our kart.

15 February 2017, Day 7: We cut out more gears on the Shop-Bot. We also added a brake pad to our brake so that it would be able to stop our kart better.

17 February 2017, Day 8: When we tested if our drill would fit on our kart, we realized that part of the transmission was in the way, so we used a power sander to sand down that part to an acceptable length. We also attached the axle for the transmission to move on. We made this axle with wood blocks and a wooden dowel rod. We finished attaching our braking mechanism, but we still need to add a handle or a peddle in order to operate the brake. We also added a PVC pole to the left side of the front axle that could swivel. We then attached this pole to the side of the kart by letting it slide freely, back and forth, through metal loops that we attached to the side of the kart.

Basic Design of the Body: The body will be made mostly out of 2x4's, with the seat being made out of plywood. There will be four wheels. The two wheels in back will be turned by the drill. The two wheels in front will be able to rotate and will be used to steer.

Body: The front of the body will not be as wide as the back.

Steering: The kart will be steered by a pole connected to the front axle that can pivot. This pole will be able to slide back and forth along the side of the kart using a handle.

Braking: The kart will brake by using a brake pad on a hinge to slow down a disk that is located on the rear axle.

Motor Drive: The kart will be driven by attaching gears to the drill and then using those gears to turn gears located on the rear axle.

Throttle: The drill will be activated by having a servo motor attached to a string pull the trigger on the drill. The servo motor will be activated by an electronic foot-peddle.

Electronics: Our electronics will include a button for a horn, two buttons for left and right turn signals, and a potentiometer for fine adjustments of speed, as opposed to our electronic peddle, in conjunction with the servo motor, just simply being on or off. The electronics will also have an "on/off" switch.


Ryan Cummings & Colin Bishop

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