Originally Posted by
Het Volk
So - this is how I ended up with my nil trail statement, and is imprecise:
Built to be a beer bike
There are a lot of issues here. The photo is taken up close and with a downward angle, so there's a lot of camera perspective to account for.
The biggest issue, though, is that your vertical line doesn't seem to be referenced to anything. It doesn't look like it's at anything close to the correct angle, and it passes through the end of the QR skewer instead of the center of the hub.
I did a quick mock-up. This is still a
very rough approximation, but I think it's a bit closer to the reality:
