New Holland TF versus TX combine settings

Thanks very much Two Tone, do the plates slide in from the rear or each side.
Also thanks for the not slowing down the rotor advice had the warning light come on a few times and felt and heard it slow down but luckily didn't block.
Happy new year to all
 

Two Tone

Member
Mixed Farmer
Your welcome and HNY too.

Plates slide in from side. If memory serves me correctly, you have 3 M6 nuts and bolts to remove where the funnel meets the bit immediately below the end of rotor conclaves and the plates slide in between the two parts these bolts connect. There should be 3 holes in the plate that the same bolts are used to hold it in place.

In truth having used a TF 42, 44 & 78, over a period from 1990 to 2012, I never once used the plates other than on a demonstrator TF 76 on some very unfit rape.

Biggest secret to using a TF is to keep the concave clearance as wide as possible, but make sure it thrashes enough to get the grain out of the ear/pod. That way you don't smash the straw up too much and flood the sieves with material other than grain (MOG).

Keep the wind up high and sieves as open as possible consistent will a clean sample. Sieves are always the limiting factor on output, not the walkers - it doesn't have any, and the rotor rarely will ever register any loss whatsoever.

A TF is much faster than a TX in every situation on every crop until moisture exceeds 23%, where its capacity will become about the same as a TX, but no worse.
 
The limit on the Tf is the capacity of the conventional drum which needs more power than a tr rotor or a AFX rotor in the axial flow both much easier to unblock than a lexion if the driver is too ambitious
Fear of blockage slows more combines than any other factor
 

Two Tone

Member
Mixed Farmer
The limit on the Tf is the capacity of the conventional drum which needs more power than a tr rotor or a AFX rotor in the axial flow both much easier to unblock than a lexion if the driver is too ambitious
Fear of blockage slows more combines than any other factor
Partially correct a while back, but not so now!

In the early 1990's, New Holland used its first CAD (Computer Aided Design) computer to make the Combine s more efficient, both for the new CR and CX Combines.

CR had been around for a decade or so in the US called TR, but had not proved successful at harvesting high yielding European crops.

At one point in the early 1980's, NH believed that TF's were so much faster and efficient than Straw Walker combines that they believed Straw Walkers were dead! But by the mid 80's the TX 30 series was developed after and from the TF 40 range, to denote their lower capacity in tonnes/hour harvested, because to some, a TF was too revolutionary and they didn't want to lose market share.

Having bought NH, Fiat decided that there were to only be 2 main combine ranges, that TF's had reached the end of their capacity without making the body of the Combine much wider, had developed a better cleaning system for the TR, soon to become the CR, that would cope with high yielding crops which would out perform the TF's

All CR's were to be built in the USA and all CX's in Zedelgem Belgium. Unfortunately, US built CR 800 series had reliability problems in Europe, so Zedelgem persuaded Fiat to let them also be built in Belgium as the 8000 series.

That 1st CAD said that although the diameter of the Drum and Concave originally designed by Leon Claeys were good, if the increased the Diameter and added two more Rasp Bars, Threshing efficiency would increase. Hence the Drum and Concave fitted in the CX 700 and 7000 series today. It also showed how much more efficient Vari-feed headers will make the drum perform, by feeding it all ear first properly.

Here comes the interesting bit !!!!!!!!!!
Then came along the 2nd generation CAD Computers. Again, they asked it how to increase efficiency. It said that if they went back to the original Drum and Concave dimensions Leon Claeys had designed in the 1940's, but increased the angle of wrap for the Concave from 80 to 110 degrees and increased the Beater speed from 70% to 110% of the drum Speed, you would end up with a threshing mechanism very nearly as efficient as the bigger diameter drums and concave ones fitted in the 700 and 7000 CX series Combines!

These original smaller but modified Drums and Concaves are the very ones now used in the CX 5 & 6000 series Combines, which in effect have the same capacity of the old TF Combines!

Then came the development of the Dual Stream Header, as shown in my Avatar here winning 1st prize at the 2015 cereals event IMMA awards. Which in effect reduces the amount of MOG (Material other than Grain), being STRAW that enters the Combine and has the effect of making a mid range CR 6000 have the same capacity in tonnes/hour as a small CR Combine, at a lower purchase cost!

WHAT I'd love to see, is what effect replacing the Straw Walkers on the latest CX 5 & 6000 Elevation (with triple cleaning grain pan) series Combine with a TF Rotor would be?

Add a Dual Stream Header (and a larger cleaning shoe) into the equation and I believe it could reach CR Flagship capacity!

So maybe TF Rotors might come back after all......................................?


BUT Fiat are run by accountants and they would rather sell you a bigger more powerful, more expensive CX 7000 or CR Combine, wouldn't they?

Which IMO will also spell the end of the Dual Stream Header, SADLY!
 
Last edited:

farmers

Member
Your welcome and HNY too.

Plates slide in from side. If memory serves me correctly, you have 3 M6 nuts and bolts to remove where the funnel meets the bit immediately below the end of rotor conclaves and the plates slide in between the two parts these bolts connect. There should be 3 holes in the plate that the same bolts are used to hold it in place.

In truth having used a TF 42, 44 & 78, over a period from 1990 to 2012, I never once used the plates other than on a demonstrator TF 76 on some very unfit rape.

Biggest secret to using a TF is to keep the concave clearance as wide as possible, but make sure it thrashes enough to get the grain out of the ear/pod. That way you don't smash the straw up too much and flood the sieves with material other than grain (MOG).

Keep the wind up high and sieves as open as possible consistent will a clean sample. Sieves are always the limiting factor on output, not the walkers - it doesn't have any, and the rotor rarely will ever register any loss whatsoever.

A TF is much faster than a TX in every situation on every crop until moisture exceeds 23%, where its capacity will become about the same as a TX, but no worse.
Pictures or drawings on the rotor plate dimensions and where to install NH TF 44.Thanks
 

Two Tone

Member
Mixed Farmer
Pictures or drawings on the rotor plate dimensions and where to install NH TF 44.Thanks
This took some finding!

Thanks to Chilean friend of mine called Jose Vielma who posted a video on YouTube:
I can show you the places where the TF Rotor Returbs Blanking off plates a positioned. They fit above the square shaped funnels, just below each outer side of the TF Rotor and above the returns side augers.
TF blanking plate RHS.png
TF Rotor Blank off plate LHS.png

You slide a flat piece of tin though the tops of the funnels to prevent any material from the outside of the TF rotor from entering the returns system

Jose farms in Chile and uses 3 TF combines:
TF 78
TF46
TF 76

Farming in Chile looks remarkably similar to farming in the UK! Jose has posted many videos on YouTube of his harvesting cereals and Maize
 
Last edited:

SFI - What % were you taking out of production?

  • 0 %

    Votes: 79 42.0%
  • Up to 25%

    Votes: 66 35.1%
  • 25-50%

    Votes: 30 16.0%
  • 50-75%

    Votes: 3 1.6%
  • 75-100%

    Votes: 3 1.6%
  • 100% I’ve had enough of farming!

    Votes: 7 3.7%

Red Tractor drops launch of green farming scheme amid anger from farmers

  • 1,292
  • 1
As reported in Independent


quote: “Red Tractor has confirmed it is dropping plans to launch its green farming assurance standard in April“

read the TFF thread here: https://thefarmingforum.co.uk/index.php?threads/gfc-was-to-go-ahead-now-not-going-ahead.405234/
Top