Bianchi Milano, and did a few test runs, tweaking things each time.
The hypothesis: Can this device make a front-loaded, high-trail bike
handle as sweetly as a low-trail bike? The early findings: Sorta, but
not quite. There is definitely some improvement, but the bike still
I lengthened the lever arm even further than shown here (by moving that bolt) and noticed some improvement. The bike still feels pretty floppy, but it's improved over no spring at all. Still doesn't feel as neutral as a low-trail bike, though.
I was surprised by how much spring tension is required to have any sort of impact on the steering. I actually bought other, lighter springs than these, but ended up not using them. Making the lever arm longer is one way to compensate for a weaker spring, since torque = force x length.
More details are on my Flickr stream.