What sprockets for 70MPH or more.

[Do©Hawk]

I'm not a big guy. I'm 5'8" and hover between 150 and 155....might be why I get away with my gearing.

[Megadan]

Originally Posted by Do©Hawk

I'm not a big guy. I'm 5'8" and hover between 150 and 155....might be why I get away with my gearing.

It's not really the weight that gets us bigger people. It's the Aerodynamic drag. Bigger and Taller = more frontal area. More frontal area = more total resistance. Put a man like my best friend, who is 5'6 and 120lbs on a Hawk and he will probably be able to hit 70mph on a Hawk with just an exhaust and the right sprocket combination. Put myself at 6'4 260lbs on that same bike, being pretty much 30-40% dimensionally bigger on that same bike, and 68 will be the best I can do.

[alex_in_az]

Originally Posted by Megadan

It's not really the weight that gets us bigger people. It's the Aerodynamic drag. Bigger and Taller = more frontal area. More frontal area = more total resistance. Put a man like my best friend, who is 5'6 and 120lbs on a Hawk and he will probably be able to hit 70mph on a Hawk with just an exhaust and the right sprocket combination. Put myself at 6'4 260lbs on that same bike, being pretty much 30-40% dimensionally bigger on that same bike, and 68 will be the best I can do.

very true, I converted a mid 2000s pep boys dirt bike into a cafe bike with a 200cc CJ engine and it would do 84mph with a handlebar fairing on it and me tucked down