My father who was one of the last living participants of the 1945 Harvest Brigade passed away this week and when we were going through thongs we found an article from the paper at the time that he harvested 6000 acres in there all summer run. That was from Oklahoma to North Dakota and back to MN. They had two little Masseys and two old trucks. I think he was 18 at the time, he was in the south Pacific 6 months later. Any way we were wondering how many acres can the new big combines harvest of wheat in a day or season. I know Dad was real proud of how much they got done with those little machines. When I got my R50 with 20 foot head, he was amazed how much we get done in a day and its 30 years old. Long story short, how much can you cut with 40plus head a day ..