That is bonkers Looks like… errr… zero trail!
I can't see how trail would be measured any different than the conventional way. You have a positive head angle and fork offset/rake.
You are right. However with so much going on with that bike, intuition suggests trail might not be biggest factor. I feel like that fork would be quite flexy
@Hulsroy started
London Fixed Gear and Single-Speed is a community of predominantly fixed gear and single-speed cyclists in and around London, UK.
This site is supported almost exclusively by donations. Please consider donating a small amount regularly.
That is bonkers
Looks like… errr… zero trail!