Downhills scare me to death too - I don't like the feeling of uncontrolled speed. I have the same problem waterskiing - no problem getting up and going, but once the boat planes and we take off, I have to give it up. It makes me feel like my heart is in my throat. I wouldnt be a good mountain biker because heights scare me even more!

I have gotten my bike up to 37 on a downhill....once, even that is too fast for me. But I do love spinning those pedals into 22 to 24 mph runs on the flats. Yep LOVE that! And I love climbing the hills. And I love riding for hours.