Hawk Talk

[Megadan]

If we used the basic principle of power vs. drag, which is roughly a factor of 4, (4 times the power to go double the speed) then if we took a stock Hawk that can reach 60mph with roughly 15hp, it would take about another 7-8hp for that same bike to reach 75mph.

Yes, there are way too many factors I left out, but the basic principle holds. If a Hawk has roughly 15-16hp and can reach 62mph (my own experience) then it would take about 22hp for that same bike, under the same conditions, to reach a max top speed of 75. I will note that I am going off of repeatable speeds, not my own personal best where I hit 65 a couple of times when stock, but it was rare.

So, with the right rider and conditions, 80mph isn't entirely unrealistic for a Hawk with head work and supporting mods. At that point it will really come down to the gearing. I know that you and I are both using a similar gear ratio of around 2.5:1, which will max out at 80mph at around 8000rpm.