BTech lite - Dual Drive Extruder

This is a simple - fixed tension - dual drive extruder, designed to be used with Bondtech hobbed bolt style drive gears.

I used these gears:
https://www.amazon.com/gp/product/B0757HSR6X/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1