mlappin
Guest
We have the same problem on our 8560, seems to go thru a lot more slats than the 9700 does. My cousin told me that on his 1660 that the drum style like the 9700's is referred to as a rock drum.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
Combines 8590 front throat drum
ferge
Guest
Were all 9700s equiped with the "rock drum"IJIJ How about 9720sIJIJIJIJ Does your cousin think that the "rock drum" reduces capacityIJIJ
mlappin
Guest
He ever only ever had this one 1660 and the drum came with it so he doesn't really have anything to compare to. We have a 9720 for parts and it has a smooth drum in it. I could see that maybe the rock drum could restrict flow a little bit. However on the 9700 we usually run out of power before we jam the throat at the drum.
ferge
Guest
Thanks for the info -- I think we are going to put the "rock drum" in the 8590 -- only have a 6 row Gerringhoff head so the flow should still be sufficient -- now if we had a 12 row that might be different!!!!!!!!!!!!!!!!!!!
RJT
Guest
Doug; after seeing your front drum I found a picture of the same drum in my 9700 White Technical Information Manual dated August 1979. Remember this was prior to the first production run and about 60 units were made in 1979. We all had trouble with the feeder house and this first run of combines all got new feeder houses before the next crop season. I don't believe anything that I had later had your drum on it. I also don,t think the feeder house problem had anything to do with your front drum. Bean straw would wrap on the top shaft and cause the chain to come off.
RJT
Guest
Reference to Rock Drum brings back memory of week of training in Chicago in August 1979, They actually showed us a movie of dumping a bushel basket of rocks into the header on a 9700 and said it was made to handle rocks. Before that fall season was over, over half of the production run had serious damage from rocks leaving all of us to joke about where they got there rocks from for the training movie. Certainly they were not granite rocks like we have in Minnesota. Just maybe the feeder house change made to those 1979 machines and all later production had the solid drums to try to stop rocks from even getting into the feeder house.
mlappin
Guest
Bought what we have here, nice hard granite rocks, that are very fertile too. Just leave two of them touching and you will have a bunch of baby rocks. Maybe their bushel baskets had sandstone instead of real rocks.