As any devoted road cyclist knows, the saddle angle is critical to finding an optimal riding position. This and other key dimensions are best obtained by visiting a local bike fit shop. Once you know the key dimensions and angles, then it's time to setup the bike accordingly. Most things can be just measured with a tape measure, but the saddle angle would require a special (read: expensive) meter.

Luckily I found a nice angle meter in AppStore. Final problem to tackle was how to keep my iPhone 12 stable on a flat surface that rests on top of the saddle.

I ended up modifying the source 3D model by cutting out unnecessary parts and joining it to a new base plate that features screw holes for securing it to a piece of plywood.

This project was a part of my bike's tuning to the upcoming DJBB 2024 event in Jamaica. Hence the text "DJBB 2024" in the base plate ;-)