ImagineDragons

Thanks for the reply Craig! I've tried that and that worked perfect actually. It's just that it takes quite a lot of time (~ 2 minutes) to complete wind up the string carefully. I think it works better with a circle (with height), like a tape roll where you wind up the string. It just makes it naturally easier when placing it in the roll. I'll be sure to post pictures as soon as my friend finishes the aesthetic component of the car (something I'm not good at haha).

@CraigD Thanks for your response, I've adapted the mechanism to my car! I had another problem that came up. The length of my string is too long because of the diameter of the back axle and the distance I am travelling with the car. How can I somehow organise the string so that it lines up with the pulley and does so perfectly?

Post Closed, Thanks everyone!