- Location
- Ashbourne, Derbyshire
A 5470 kg tractor on 650 tyres
or
a 4610 kg tractor on 560 tyres
or
a 4610 kg tractor on 560 tyres
I would think the heavier tractor on bigger tyres.
I swapped a 4.5t tractor on 520's for a 4.5t on 480's and there is a marked difference in how they travel on soft ground.
Nope the other way round, the larger tyre width being the 520's, travelled so much better than the 480's. I'm probably going to get some 540+ for the new tractor.Are you saying that on your 4.5t tractor, the 480's caused less compaction?
A lot would depend on the tyre pressure.Lets assume both sets of tyres are the same make/type, are the same diameter and have the same pressure. i.e they are identical but for the width.
We'd have to guess the footprint length but as they are the same for both it doesn't really matter. We'll go with 500mm.
So A nominal size of footprints would be 650 x 500 = 325000sqmm (3.25metre) and 560 x 500 =280000sqmm (2.8metre)
Compaction is effectively downward pressure or pressure = weight/area.
so.
5470/3.25=1683kg/m
4610/2.8=1646kg/m
so the lighter tractor on 560's compacts less but only just
A 5470 kg tractor on 650 tyres
or
a 4610 kg tractor on 560 tyres
It was a purely hypothetical calculation. Obviously there are 4 wheels to account for and a million other variables but as long as it's the same for both sets of wheels then it doesn't matter
A lot would depend on the tyre pressure.
The 650's will have a higher load rating than the 560's. There for, if the 650's were able to run at a lower pressure than the 560's, they would have an even greater footprint.
My money is on the 650's causing less compaction.
A 5470 kg tractor on 650 tyres
or
a 4610 kg tractor on 560 tyres
Will depend on what tyre pressure each tyre has in it.A 5470 kg tractor on 650 tyres
or
a 4610 kg tractor on 560 tyres