[AT] country disc well grounded

[Francis Robinson]

--On Tuesday, January 08, 2008 9:33 AM -0600 Larry D Goss 
<rlgoss at evansville.net> wrote:

>> From my memory of using a John Deere L as a kid, I don't think that will
> pull it either.  The L did alright with a single disk that had six disks
> per  side, but it would have trouble with something this size.
>
> Larry
>

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	Saying it would not pull that disk is not insulting to us CUB guys. We 
already know what it was made to do and what it will do. CUBS do a 
remarkable job of plowing and cultivating and mowing with a CUB mid mount 
sickle bar mower. They do fine with a properly sized disk but properly 
sized are the key words. Most of those little tractors like the IHC CUB, AC 
G, Deere L & LA and other little tractors of that size will pull a 4' 
double disk fine in about any conditions and a 5' one in good conditions 
but don't plan on burying it.   :-)   I can't tell the width of the one 
being discussed here but would guess that it was maybe a 6' disk. We pulled 
a 7' Ferguson disk with a Ford 9N, an 8N, a TO-20 Ferguson, a McCormick 
10-20, a Deere MC, and a Deere 40 crawler. It had a smallish drag on the 
back of it. It had been originally designed so that you used the tractor 
lift arms to operate a linkage to pull the "set" out of the disk for 
transport and for easier turning. We didn't use that on ours since it was 
kind of an involved switch over and a a bit of a pain. We did use a 
swinging drawbar to make turning easier. During many of those years We also 
used a 7' 3 point disk on tractors so equipped. When the Ford Jubilee and 
the IHC 300-U came on the farm we bought a new Dunham 8' disk that was "a 
lot" heavier than the Ferguson and the 3 point disks. You could really bury 
it.
	Conditions vary a lot around the country and differences in tractor 
gearing and weight but here in my area a sort of rule of thumb would be:
10 HP to pull a 4' double disk
18 HP to pull a 6'
25 HP to pull a 7'
32 HP to pull a 8'
40 to 45 to pull a 10'
50 to 60 to pull a 12'

	Like I said that is pretty subjective... The 10-20 and the crawlers pulled 
that 7' disk and drag easily but slowly.   :-)  The others I mentioned 
would pull it at 5 MPH.

	The first hint I saw that that disk in the picture was not a cheapie was 
in picture 8 where you can see that the outer hitch links are made with 
that forged steel that is shaped kind of like an "I" in cross section and 
that it was formed to the curves instead of being fabricated out of a 
couple of pieces of plain straight bar stock. The cheap implement guys 
didn't use much of that forged steel.

	BTW, None of the early old tractors were ever designed for a sometimes 
high impact PTO load like we put on them using rotary brush cutter mowers 
(Bush-hog type) and I believe that use has put more of them in the junk 
heap than any other load.





--
"farmer"


Francis Robinson
Central Indiana, USA
Robinson at svs.net