To dual or not to dual

Exfarmer

Member
Location
Bury St Edmunds
If you are towing an MF30 drop your pressures to 8psi you wont do any harm I would put the duals on too and have the outers 4-5 psi, but not if it is wet enough so great chunks fall off behind. Having the tyres really low also discourages build up as they flex so much.
 

e3120

Member
Mixed Farmer
Location
Northumberland
Why do you say it was nonsense, I say more common sense or money for old rope. . Even if the figures used were hypothetical. The theory behind what they were trying to get across is worth investigating. As some of the above posts have said sometime going wider with tyres has done more damage that good.
I was short of time. Their calculations were nonsense, going round the houses to produce a 'total weight applied to the field'. Even if this was meaningful, they used the narrower footprint of taller tyres, but omitted its greater length.

The discussion around wide v narrow, is very valid and this thread has quite correctly suggested the answer is "depends on circumstances". It was a shame that the AHDB event I attended lost the audience in pages of meaningless numbers, when an excellent opportunity for experience/knowledge sharing existed.
 

Dukes Fit

Member
Location
Aberdeenshire
Appropriately sized duals will always apply a lower ground pressure than any equivalent terra or wide tyre.

Old school teachings were that there should be a tyres width between the spacer bands. Not often possible with modern tractors if running 4m machines.
Duals provide more grip and less ground pressure.

The problem nowadays is people don't want to be bothered with the hassle, they just want to do what it easiest.
 

Finn farmer

Member
Appropriately sized duals will always apply a lower ground pressure than any equivalent terra or wide tyre.

Old school teachings were that there should be a tyres width between the spacer bands. Not often possible with modern tractors if running 4m machines.
Duals provide more grip and less ground pressure.

The problem nowadays is people don't want to be bothered with the hassle, they just want to do what it easiest.
We'll dual up our Deere at spring and take the duals off at the end of autumn. Superior pulling power and low ground pressure. We do everything with duals on it. Even mowing sometimes if necessary.

Duals are the poor mans 800,s
Can't see how 800's compare to even 2x520's. Let alone 2x650's or 2x710's.
 

Flat 10

Member
Arable Farmer
Location
Fen Edge
Appropriately sized duals will always apply a lower ground pressure than any equivalent terra or wide tyre.

Old school teachings were that there should be a tyres width between the spacer bands. Not often possible with modern tractors if running 4m machines.
Duals provide more grip and less ground pressure.

The problem nowadays is people don't want to be bothered with the hassle, they just want to do what it easiest.
I want to run duals it’s the other f**king road users that don’t want me to..... nothing to do with ease and everything to do with legality.
 

two-cylinder

Member
Location
Cambridge
If you are towing an MF30 drop your pressures to 8psi you wont do any harm I would put the duals on too and have the outers 4-5 psi, but not if it is wet enough so great chunks fall off behind. Having the tyres really low also discourages build up as they flex so much.
If the tyres are elderly dropping that low will probably ruin them.
Cracked inner walls, and if fitted with tubes, nips and punctures will follow in due course.
 

Exfarmer

Member
Location
Bury St Edmunds
If the tyres are elderly dropping that low will probably ruin them.
Cracked inner walls, and if fitted with tubes, nips and punctures will follow in due course.
I would have thought that getting a crop off to a good start more important than a set of tyres. I used to run tractor with a 3 metre combi on the back with 8 psi all round. 14.34’s dualled with step down 12 38s
the total area on the ground x the tyre pressure dictates the squab. Then a balancing press on the front . Pulling a 30 drill is imposing no weight on the tractor and rubber spread out over ground is the most important thing. As later poster says you could probably drop tyre pressure even further withe the proviso that you must be careful of slippage on the rim, especially if you have tubes!
 

Salopian_Will

Member
BASE UK Member
Location
Shropshire
Appropriately sized duals will always apply a lower ground pressure than any equivalent terra or wide tyre.

Old school teachings were that there should be a tyres width between the spacer bands. Not often possible with modern tractors if running 4m machines.
Duals provide more grip and less ground pressure.

The problem nowadays is people don't want to be bothered with the hassle, they just want to do what it easiest.

It is not the 'hassle' which has caused the massive reduction in the use of duals but the improvement in tyre technology making them less necessary than before. When I think about old TWs dualled up all round here on 20.8s or whatever they were, I am sure they were not doing nearly a good a job as the 710 x 42s that we are running for drilling now.

Moreover, tractors are much more versatile. In the TW days all grain was hauled off by a fleet of old lorries, as they were frankly unsuited to the job. Now everything is done with tractors and trailers on proper tyre equipement.
 

Bury the Trash

Member
Mixed Farmer
Put duals on if you want but remember this fundamental fact... it wont magically take weight away like up into the atmosphere by fairies.

Its weight that causes compaction,

WEIGHT . (y).
 

SFI - What % were you taking out of production?

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

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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/
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