[AT] Question about modern 4WD tractor (while watching OliverSuper77 Diesel)

[Grant Brians]

I appreciate all of the feedback. I really did not think I had a problem as
the tractor works so nicely, but I was thinking about the load per shank and
that started to get me concerned. Subsoiling (ripping here) consumes a large
amount of power in our heavy soils, the neighbors are pulling three shanks
with 275hp and I am doing it with around 90! They are going a little deeper,
but not much. I just got concerend reading about the FWA worries.... On the
other hand, Farmer Robinson's response below doesn't match what I have done
here about speed. My experience is mostly with crawlers and they pull at
2.5mph happily and all decade (not all day in other words, LOL.) I typically
pull a disc with this tractor ten inches deep 10.5' wide in either fourht or
fifth gear (5-6.5mph) and a wider disc slower....
    Thanks all. It is just different with these new tractors versus the old
Cats I am used to.
        Grant Brians
        Hollister California
----- Original Message ----- 
From: "Francis Robinson" <robinson at svs.net>
To: "Antique tractor email discussion group" <at at lists.antique-tractor.com>
Sent: Tuesday, November 30, 2004 12:00 AM
Subject: Re: RE: [AT] Question about modern 4WD tractor (while watching
OliverSuper77 Diesel)


> My rule of thumb (for field work not quick pulls) has long been it must
pull it without straining (most of the
> time) at 5 MPH. I must be able to drop it a couple of hundred RPM and then
have it recover quickly when I move
> the throttle back toward full. That doen't mean that I wouldn't do a field
one gear lower if needed but I wouldn't
> do field after field at full load at much lower speeds. I don't do much
"plowing" any more but when I chisel plow a
> field with my Deere 4020  I run about 5 MPH. I pull a 16' disk about 4" to
5" deep and my 24' field cultivator each
> at 6 MPH.
> My father got hung up in later years (as his mind was slipping) on deep
plowing with a mold-board plow.
> He was running almost 14" deep with a 3 - 14" plow behind the MF-165D
running only about 2 1/2 MPH and
> rolling a big cloud of black smoke. That MF ran best when about 2000 to
2100 RPM but he was pulling it down
> to about 1700 RPM. Nothing I could say would get him to back off on the
load a little. It had to have both
> planetary final drives replaced twice. The multipower also had to be fully
replaced. It got a new short block at
> about 2500 hours. When we first got it normal plowing was a 4 - 14"
mold-board plow at about 4.5 MPH at
> about 9" deep It could hold full governed RPM in most soils with that
load.
>
>
>
> "farmer"
>
>
> Francis Robinson
> Central Indiana USA
> robinson at svs.net
>
>
>
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