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Post by JasonB on Jan 27, 2016 23:43:51 GMT
I know Gleaner offered a 12 row corn head for the N6, N7, R6, R7, R60 and R70. I didn't include the R72's as when the R72 was released it was really capable to run a 12 row head. Was wondering if anyone has seen an N7, R7, or R70 with a 12 row corn head in the field other then in brochures. Think the Class 7 N7, R7, and R70 would have handled the head just fine, but not sure how they performed. Was wondering if the combines themselves had enough capacity to keep a clean enough sample and what ground speeds you could run at?
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Post by samuelh on Jan 29, 2016 1:04:23 GMT
I think they could handle them well. John Deere was running 12 rows on their 8820 Titan and Titan II combines. Even thought they had less capacity. However it all comes down to speed. To get a good sample and not to overload your combine. They could handle the header, just not the speed like these modern combines can.
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Post by JasonB on Jan 29, 2016 2:12:16 GMT
True, and the Bushels per acre in Corn was significantly less in the 1980's when the 12 row heads were starting to gain ground. Would be interesting to know how many 12 row heads were made under the Allis Chalmers and Duetz-Allis brands. Has anyone seen a 12 row Gleaner corn head with the AC or DA Name on it, other then just in the brochures?
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Post by 1480man on Feb 5, 2016 1:31:44 GMT
We ran 6 row 30" corn heads on both our IH 1480 and R60. The R60 usually had a bit more capacity in small grains but not much more in corn. In 100bpa corn we would travel about 4.5-5.5mph with the 1480 and about 5-6mph with the R60 which makes me think if either machine was running 12 rows, ground speed would have been less than half of our speed with 6 rows,,, as a 12row head takes more hp to run than a 6row. Also back then we didn't have much for stalk chopper/shredders. Choppers are much more common on newer headers but require much more hp to operate.
We ran a JD 643 corn head on both machines, when we purchased the head it had been on a 8820JD. We had to change out the sprockets on the header to make it go fast enough for the 1480. The 1480 may not have had the capacity of a N7 gleaner or 8820 in wheat or barley but in corn it did almost as much as a N6 or N7 with 6rows and I'd say it would do more than a 8820.
John
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Post by JasonB on Feb 5, 2016 19:17:12 GMT
I guess around 2.5- 3.5 mph must have been the top speed you could have pushed an R60 or R70 with a 12 row head, without running out of power or grain loss. Think 12 rows were less common in the 80's as they are now. Heck a 12 row head is getting to be too small.
Did you have to run at 5-6 mph to keep the R60 full to capacity with the 6 row? Know the biggest complaints guys had with the JD 8820 is you had to run her fast with a 6 row head to use the capacity of the machine.
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Post by 1480man on Feb 6, 2016 12:18:22 GMT
5-6 mph was about as fast as the header could efficiently do a good job so most times speed was the limiting factor. In corn our 1480 would have given the R60 a run for its money but in small grains the R60 would have walked away from it. We had talked about getting an 8 row head but with the 1480, the hopper was sized for a 6 row. We didn't unload on the go or have grain carts so 6 rows was it.
John
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Post by JasonB on Feb 6, 2016 14:27:33 GMT
At 5 to 6 mph with the R60, do you remember how the grain loss was in the combine? or mostly header loss.
Jason
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Post by 1480man on Feb 8, 2016 4:10:04 GMT
Neither the R60 or the 1480 had any measurable grain loss when properly set up, even at those speeds in 100bpa corn. With today's yields we would probably have to slow down a bit to keep from overloading the sieve. The JD643 corn head was a very well built corn head so header loss was minimal. We had a 24ft flex Gleaner flex head for the R60, it was ok. I think JD had the best headers in that era, we ran our R60 in soybeans with my cousins JD9600, they where very comparable in capacity in beans however the JD head cut and fed in better, it was especially noticeable when the beans where lodged or laying down.
John
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