But no one turns up these days with a Ford 6600, vicon spinner, and a stanley knife to cut 1 cwt bags......
It's an £80k tractor, £12k spreader with £3k GPS, and to top it off a £60k telehandler to load 600kg bags.
£5 / acre sounds way too cheap to me....
You are correct, of course. How many ac per day would the aforementioned rig do? 6th gear at pto revs in a 66 is about 9.5kph, so at 12m wagtail width thats 11.4ha without turning. (24m twin disc at 12kph = 28.8ha for the same) So thats 2.5times more ac covered, and half the turning. If 50% on average total time spreading with a twin disc & fairly handy fert supply, thats 35ac/hr @ 3quid = say £100/hr.
The 66, conversely, has double the turning, and likely double the filling time way back when, so only 25% productive = 7ac/hr @ £3/ac = £21/hr.
Nowt much changes really, does it!