What speed makes you kind go "oh crap"?
so I was out on a ride last night and took a new route, come up to a pretty decent looking hill, make it up in the 2nd chainring about 1/2 way until i need to granny gear it. well 10 miles later returning in my route back i now get to go down this hill. I rarely look at my speedo going downhill, more for safety sake, but glanced down and saw 35mph and it was increasing. Def hit the brakes a couple times going down the hill just to keep things in check. Not sure if I'm quite comfortable with speeds over that quite yet.