From what I have learnt and experienced during last 40+ years:
The weight of the tractor should be 800 - 2000 kg per a plough bottom depending on the soil type.
My late old man used to have 3 bottom plougs on Nuffield 1060 tractors.
Then later on we have had a 4 bottoms on a Volvo BM T 700 (4,2 ton 90 hp) and after that 3 bottom return plough on the same tractor.
Now pulling a 4 bottom 18" return plough with a JD 3650 tuned to some 130 hp maybe. I can work also the tight spots to my full 26-28 cm, but speed drops down to 7,5 - 8 kph in those places...
Nuffields 3 bottoms and Volvo with 4 bottoms newer could do that.
So I would say that if you want to put 4 bottoms behind a Nuffield 1060 or MF 165 You can not be able to go to a proper ploughing depth...
The weight of the tractor should be 800 - 2000 kg per a plough bottom depending on the soil type.
My late old man used to have 3 bottom plougs on Nuffield 1060 tractors.
Then later on we have had a 4 bottoms on a Volvo BM T 700 (4,2 ton 90 hp) and after that 3 bottom return plough on the same tractor.
Now pulling a 4 bottom 18" return plough with a JD 3650 tuned to some 130 hp maybe. I can work also the tight spots to my full 26-28 cm, but speed drops down to 7,5 - 8 kph in those places...
Nuffields 3 bottoms and Volvo with 4 bottoms newer could do that.
So I would say that if you want to put 4 bottoms behind a Nuffield 1060 or MF 165 You can not be able to go to a proper ploughing depth...