The spool prototype is now fitted to the car and seems to work perfectly well. The spool seems to have plenty of tension to pull the rod down the track but not so much that the rod is difficult to move back to its stored position.
The cover is missing its top since this is the integration model, made to ensure that the two parts of the 3D printed cover fit together well before printing a full cover. However, this integration model is also perfect to let me observer the spool as the rod moves.
I’ll leave the prototype on the car for a few months to see how reliable it is before replacing it with a fully covered production version.
Read more about the history of this project here.
Disclaimer: 308restoration.com describes the restoration work I perform on my car and only my car. I am not a professional mechanic. The website content is presented for entertainment purposes only and should not be seen as any kind of advice, information, instruction or guidance for working on any other car. The opinions stated here are my own and no-one else’s.