bigpower
Guest
Cleaning area is most important. Horsepower has nothing to do with the efficiency of a combine. A properly set 2388 at 280hp will show this, it will produce more clean grain_hour than a 9750 with 325hp. Add an AFX rotor to a 2388 and you will see 5-15% more throughput capacity than any 9750, with 50 less hp. Because the 2388 does have a larger sieve area to handle more material, it would not hurt to turn up the HP if it is needed for unloading on the go, or working in hills. Just my 2 cents worth!