Our Robot Can Do A Full Pipe

The time is drawing near that the crew heads off to Canada! Since my last update on the wheels, we’ve made some slight changes to the original design and added an entirely new wheel design.

For the original design the inner diameter was changed so that the space between the spikes and the hub is less.

Before and after the diameter change

The outer diameter of the hub changed accordingly to make up for the loss on the wheels. To make the wheels sit closer to the chassis, I added a circular emboss on the flat side of the hub of 2mm. This makes the hub wrap around the servo to reduce the width of the robot.

The circular emboss on the flat side of the hub

Another slight change to the wheel was the removal of the cut on the side. It wasn’t really doing much for the wheel, and we had edited it to the point where it wasn’t noticeably sloped but made the layers on the print stand out more, so we decided to just get rid of it altogether.

We also decided on having an entirely new design, specifically for the PVC course. Thanks to the interchangeable design of the new wheels, we can easily switch from one wheel type to another. For the PVC wheel, I changed the spikes so that they were rounded rather than straight edged. The number of spikes also changed from 12 to 8 to accommodate the gaps between them.

PVC wheel in all its glory
PVC wheel makes this course a piece of cake!
About the author

Erin is our 3D designer who creates and improves parts for our robot. She has an extensive knowledge of Blender and knows several languages such as Italian, German and Japanese. Sidenote: not a Nazi. She is the brains behind a number of our mechanical designs including the wheel systems.She often has ideas on improving the robot that somehow no one else even considered. Contains such ideas in a mythical orange folder hidden somewhere in a faraway place. Secretly also a dragon."If no one comes from the future to stop you from doing something, then how bad of a decision can it really be?"

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