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Different corn head


masteinmann
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I say yes; the 9000 series cornhead was a HUGE improvement over the 40 series. The poly points will help save corn, will not rust and can take a bit more abuse in the field than the old 40 series could. It was a completely redesigned corn head. 

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Depends on your area.   If you are in a area with variable ground conditions, then hydraulic deck plates are good.  Haev to change them to fit the stalks.   I'm in a "flat black" area with very consistent corn, and have a head with adjustable deck plates.  I finally just bolted them solid, as I never moved them, and they were always drifting.   In my conditions, just one more thing to try to watch & adjust.   

Early 90 series were the same head under the poly.   Later ones had a improved gearbox, IIRC.  The poly is nice, but I've also seen polished tin slide better than scuffed poly.

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12 hours ago, Jeff-C-IL said:

Depends on your area.   If you are in a area with variable ground conditions, then hydraulic deck plates are good.  Haev to change them to fit the stalks.   I'm in a "flat black" area with very consistent corn, and have a head with adjustable deck plates.  I finally just bolted them solid, as I never moved them, and they were always drifting.   In my conditions, just one more thing to try to watch & adjust.   

Early 90 series were the same head under the poly.   Later ones had a improved gearbox, IIRC.  The poly is nice, but I've also seen polished tin slide better than scuffed poly.

Jeff-C-IL - are you saying the 90 series Deere heads were the same as the earlier 40 series under the poly? If I remember correctly, Deere redesigned the entire corn head. Yes some parts may have been the same. I was part of the plastics team at a vendor on this one... it's been almost 30 years since that project and I thought I remembered the entire head was new parts??

 Fun fact... a wet poly head was tested in the field a few times; the combine operator actually was able to speed up the ground speed as the corn went into the rolls faster when wet. :)

 

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Been a few years, but IIRC there were a lot of gearboxes & rolls taken off 40 series heads and put on early 90 series as parts.  I could be misremembering.  Same rolls, same chains.  Not saying that they are identical, just they were very similar heads.  The frame, gearboxes, etc were really close.  My impression as a user was always - just an update & poly.   The 600C head was completely redesigned.

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Thanks Jeff... now i am going to have to find any info I had from that project - getting curious to see what Deere did redesign. I do remember they did design new rolls, one like the Pixall rolls that were out in the early 90's...those suckers would take wet corn off the stalk!

 

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