Thinking "if the pros can ride in the rain, so can I", I did a rain ride a few days ago. It was a steady moderate rain, not a downpour or anything. Well, after two hours I was truly wet and miserable, not to mention SLOW. My bike had water draining out the bottom when I placed it on the car rack. (Road bike with no fenders... titanium, thank heavens.) There was drivetrain noise I don't normally hear.
Had my Showers Pass Rain Jacket on (pit zips open though), Garneau "waterproof" booties (HA!), Hincapie skull cap under my helmet... I should be fairly dry no? Well, no. Absolutely no. I wasn't riding very hard so I don't think the moisture came from within... but I can't be totally sure. Perhaps I should have used my over the helmet rain cover, but I didn't. Well, if this had been a longer ride on a tour for example, I would have surely been SOL.
Tips and tricks for rain riding from veterans who do that sort of thing would be welcome. (I'm aware that a certain amount of HTFU is going to be called for, of course.)