Exactly right Tom, the ground speed is limited to the sickle as to not be pushing over beans and then it's still hard to keep the rotor full. And Tom, you need to invest in a head trailer to back a bigger head in the corner, all my neighbors are happy that I am a pilot with the speed I have to run my Hyper'd N6. I have thought seriously of figuring out a way to speed up my corn head some more as 6 to 7mph in 200+ bu corn still can't keep the rotor full. The most fun I have is watching the neighbor with his STS with the same size head and more HP crawl through the field, it won't even compete with my almost 20 yr old machine.