I noticed in the summer that my trusty old Triumph Thunderbird was oscillating when doing under 30mph but as the bike was heavily laden and we were two up I thought that was the cause.
I've recently noticed that its still there and could be getting slightly worse. The old girl has a large screen and the head bearing and front tyre seem fine.
When moving over 30mph it disappears
Any ideas what this could be?
Thanks as always