I am building Vesc based Gokart and I needed throttle pedal based on potentiometer to be able to control motor power via ADC output.
Inspired by all Sim pedal designs I was able to find.
Everything is easy to print and is requiring minimal amount of support.
As a dampener I used “140mm Aluminum Shock Absorber Damper for rc car 1/8 buggy truck" from aliexpress.

Designed in Onshape so source is available here: https://cad.onshape.com/documents/05d86fd91e5db0e08ada2618/w/f803ea5f813744a334a670ec/e/560fadf59926a506c315453a