Cycling in Sydney Australia
I used to belt down Sydney Road to Manly but I began to get the dreaded speed wobbles - frightened the crap out of me. Tried clamping my knees to the top tube - made it worse. Light hands on the bars - who writes this crap, the wobbles were so bad you simply hung on for dear life. Who else has had this problem and what did they do to control it?
I experimented with it until I found that if I got my bottom of the seat and lay down as flat as possible the wobbles stopped almost instantly.
Saw a you tube video today "Murray Walker talks about Wobble and Weave on Motorbikes". Every bike and rider has its own harmonic at which wobble will occur though it can be exacerbated by tires, air pressures and high centre of gravity. If, or should I say when wobble happens you get off the seat and get low because you quickly change the harmonic of the combined rider and bike and goodbye wobbles. That's my best guess.