There was only one reason I did not go 150+ mph on my bikes when I was a kid. It was because I didn't have a bike that would run 150+ mph!!!
Requardless how many times you tell him to be careful he will find out how fast that bike is. If it can go 150 you can bet the farm he will too!!!
i saw 129 mph on my bike at 19 years old
drove me crazy because i wanted to break 130
almost hit a cow at 110 mph
the truck that hit the cow said he was at 130 when he hit the cow...he was ok but truck and cow were lost
a few years ago i was on my 1100 honda magna [over powered too]
new years eve.. i was passing a slow car on a bridge
as 2 cars RACING came up from behind side by side
i dropped down a couple gears and hit it hard....jumped over 100.....THANKS TO THE POWER
i got in front of the car i was passing just in time........they almos hit me even with me doing over 100
on top a high bridge over the intercoastal waterway
i am convinced the horse power saved my life that night
i think that was my last ride at night and i stay out of the sun