Well now I need a REAL prototype made, which is probably going to take at least a week. After that it's test, break it, probably find something wrong with it and have to completely change the design, test again, find that the new design fails and give up on the idea entirely.

So, a couple weeks?

Here is the latest prototype all fitted to the bike. Going to try to make some changes to make it use the stock Brompton screws. Right now they don't reach.