Go Kart Challenge Nickole Xenakes

Problem Statement:

Given the time period until seniors graduate, our group of three will create a functioning and stable Go kart. Our Go kart will be produced from materials given and any materials purchased under a $25 group budget. This Go kart will be powered by an 18V drill to cause acceleration, which will be operated with a throttle through a string pulling system. With acceleration, there must be deceleration so a brake system will be made using a similar string pulling system to allow the vehicle reach a safe stop. In order to support the weight of group member we will create the body/frame of the Go kart from ¾in plywood. We will use PVC piping connected to a piece of plywood, attached the axles and wheels that will create a steering mechanism that will allow our Go Kart to turn and have traction with the ground. Finally to add literal bells and whistles, we will use arduino to program the inputs and outputs.

Research:

This is picture we found to base our steering mechanism off of. We plan to either use string or a similar cord to create tension for the axles to be turned by the pull of the string or cord, cause by the turning of our "steering wheel".
To get a general idea of what we want our Go Kart to be based off of, we used this picture . We based our acceleration and braking mechanism off of the picture above. The steering mechanism illustrated in the photo above is also similar to the design we used on our go kart.

To find the pictures above we researched video compilations which can be found by clicking on the buttons below:

Design:

Here is a front view sketch of our Go Kart. Our steering mechanism will be with a 1ft tall, 2in radius PVC pipe, with two holes drilled into it for string to be wrapped around and connected to the board with the axles and wheels to turn left and right.
This is a detailed top view of our Go Kart. Shown is our brake mechanism, acceleration mechanism and the dimensions for each part.
This is a rough sketch of our seat. this seat will be stable and connected to the base of our go kart using a mortise and tenon joint system.
This is a front view of our steering mechanism. to steer our go kart we will drill holes in the PVC pipe, for string to be thread through, where once turned in one direction the string will pull the opposite side on the axle holder, which will turn the entire vehicle.
This sketch is a top view of our base, with the mortise and tenon joint holes for the seat.
This is a side rough view of our entire go kart. Here you can see the mortise and tenon joints for the seat displayed, as well as the acceleration pedal, drill placement, steering and brake mechanisms.
this is a side view sketch of our seat. This view shows the detailed dimensions of the mortise and tenon joints. This sketch will be two pieces, exactly the same in measurement, nailed together to fit in the sketch above. These are the “arms” or sides of the seat, not the back panel.
Above is our completed Onshape file of our base, with the mortise and tenon joint holes.
The back of our seat, Onshape file is pictured above. We added Mortise and tenon joins on the back of our seat and the side of our seat as well.
Pictured above is the side of our seat, as our Onshape file. Here you can see the mortise and tenon tabs at the bottom of the side of the seat for the seat to latch into the base; as well as the mortise and tenon holes for the back of the seat to latch into.
Above is an assembly of all of the parts we made in Onshape, to be printed out on the shopbot.

Build:

This is a picture of the shopbot cutting out our design files from the v-carve file.
Once the pieces were cut out on the shopbot, we sanded all of them to make them smooth to the touch and not unsafe to lean against.
With each piece sanded, we then had to trouble shoot a bit to safely connect our mortise and tenon joints. We used the vertical band saw and the bastard file shown in the picture.
Above is a picture of our assembled frame, this frame cut out is identical to the frame assembly from Onshape, pictured previously.
This shows the hole we drilled for our steering mechanism and the PVC pipe that fits snug into the hole.
Above shows the the design for how we attached the axle to the frame. We used zip ties to secure the axle to the piece of wood and then we used a nut,bolt, screw, and a piece of white board to attache this piece of wood to the frame, allowing the front wheel to swivel and turn. The back wheel attachment method is the same, minus the White board to make the axle turn.
Above shows our Go-Kart's frame and the two systems we have completed as of now. The seat is our first system and the wheels are our second.
Created By
Nickole Xenakes
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