Combines 12x20 head

Two things to consider: weight and horsepower. I can't say that the head would be too heavy for your combine, but I'd take a close look at it. You've also got to consider the extra horsepower it will take to run those 4 extra row units. You might want to think about an 8_20 instead.

I helped my dad make a 10 row, 22" corn head to fit a 1660 combine several years back. Weight is a concern, we put 6 weights on the back but still have to be careful about sudden stops as i think it is still a little too front heavy and rear end will come off the ground. the head had ben a 6 row, 36" to start with and i thinm it became 4-6 inches wider overall, and the planter we used had been a 16 row, 30" and I think it actaully became a little narrower. At any rate, we just ran numbers and a 22" spacing was going to work with the least amount of work as far as moving units, buying more, etc.

Our neighbors had been running a 9 row 22" and then a 12 row 20" head with a 9500 for the past 6 years or so. I don't recall them having any problems. This past year they upgraded to a 9650 and a 16 row 20" head. Now they just have problems keeping the corn away. We also had another neighbor that was running a the same setup with a 9400 when he had the 9 row 22" now he has a 12 row 20" and uses a 9550. Note that our yields normally run 125-175 in SW Mn.

A frame from a 8x30 head will need to be lengthend about 5" on each end. Figure the distance between outer rows. Space between 7 rows X 30"= 210" 11 rowsX 20"= 220" measured center to center outer rows. I see no other problems that weight on the rear could not fix.