After some looking around online, I wasn’t able to find a CAD file for the high strength 84 tooth gears. I was just going to use two regular 84 tooth gears constrained together, but it just wouldn’t have been the same. Anyway, I decided to make one myself. Feel free to download it and use it for your projects
http://i.imgur.com/uMSB9J9.png http://i.imgur.com/6Q7vVCs.png http://i.imgur.com/5KUxk45.png
[attachment:57390d926001e][attachment:57390d926001e] Alternative Download
84 Tooth Gear High Strength.zip (204 KB)