Fork Rake
 

I own a Wilier zero 9 that I built up with Campy Chorus 11 components. I am miffed that when riding It won't allow me to take my hands off the bars without it wanting to fidgit from side to side. It has a fork with a forward flare that gives it a significant fork rake and trail. Are there other bikes that have this characteristic? My Robouix will track straight when I lift my hands and am trying to get used to the Wilier.

IME, hands free riding characteristics vary from bike to bike, assuming they have no alignment or headset problems. sometimes tires can make a big difference. some take a bit more finesse and skill.

I couldn't readily find the fork numbers, but it looks like a typical 45mm rake. Most bikes have a straight fork that goes to the same place. There is something else wrong, my guess is it's not particularly straight.

My bike, when new 4 years ago, behaved in just that way and I found it just as annoying as you do. After mush careful measuring and alignment checking with a lengthwise string, I found the dropouts were not symmetrical so that the wheels were tilted in opposite directions. After much hemming and hawing over several weeks, I took a round file to the dropouts and carefully filed the slot, checking constantly until satisfied the wheels were straight. The bike now tracks well and I can ride no hands for a bit. The best thing is the bike now tracks well around corners. I'm not 100% satisfied but the bike is mush improved.

get the trail data.. straight line thru the steering axis to the ground.. . and vertical plumb line through the axle.

the distance on the ground plane between those lines is the trail..