ive got my hybrid to around 50mph going downhill near Caldbeck in the lakes with the mountain winds wind also behind
I had to ease on the breaks and it took me ages even with hydraulic disks to get down to a reasonable speed nevermind even stopping, i reckon it was at least 100 metres or so to go from 50 to about 20-25
I would have kept at 50 but i wasnt wearing any safety gear
you forgot to add the weight of the rider and that of any equipment/water and to take into account a bicycle wheel has only a small surface area touching the ground
Erm Yea,forgot about that

