Steering "resonance" descending cold
Interesting thread to read. I have an of topic question, but people on this thread are likely apt to answer.
Recently I experienced something I hadn't tried before. Descending a mountain pass in cold weather (probably 0-10 degrees with fog and rain) at high speed (probably ~70kmh) I was freezing a lot, out of sugar etc. Suddenly my handle-bars started wobbling and the more I tried to hold them straight the larger the amplitude of the wobbling became. I eventually managed to brake to a halt (wasn't easy as fingers almost numb). When I started again, the wobbling came back as soon as I went over ~50 kmh
This is the same bike I have descended on many times before and after the incident. The only difference being that I was very cold and tired. So I am convinced the wobbling came from my counter-steering (or whatever mirco-movement it should be called) somehow being out of phase, thereby causing amplification rather than damping.
Questions:
1) is this a common well known phenomenon?
2) are there any tricks to stop it (other than do not descend when very cold)?
Thanks