crank fan

I have not had the time to print and test this but I spent about 3 hours on it, so if you print it please let me know if it works in the comments section. The only part that I don't know for sure if it will work is if the small gear on the crank shaft's teeth will line up with the large beveled gear because I used the same file for both gears and just shrunk the gear for the crank but once I know how to do more on Tinkercad I will revisit and revise this project but if you make this please let me know how well it worked for you and if it had any problems please let me know what they were so I can fix them.

UPDATE:
i have revised the issue with the gear i just have to test it still

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/9QLcReat9Iv