So by complete coincidence, my top speed in my life (according to my cycle computer) was on a diamond-frame Peugeot 12-speed (which is still in my basement) back in 1987 on a long 2+ mile downhill stretch in Texas hill country on the MS150 from Houston to Austin.
I hit 63 mph.
At some point, I realized I would likely be killed or seriously injured if I fell so I held on tight for dear life.
My original goal was to save pedaling on the next uphill slope. I made it about halfway up the next hill.
BTW, this old thread popped up as a “similar thread” for me while starting a new thread. I guess I missed it because it was started a month before I joined 26 years ago. But reading these two posts, I was compelled to chime in. Better late than never. ![]()