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Re:Statistically speaking.....
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Posted by RodinNS on September 03, 2005 at 19:47:55 from (142.177.84.158):
In Reply to: Most fuel efficient tractors?? posted by 550Doug on September 03, 2005 at 15:59:28:
The Deere 720 Diesel, tested in 1956 set a fuel economy record for it's time at 16.6hp-hr/gal.
In more recent times, the leaders have often been Deutz, along with the Massey 230, and some other Perkins powered tractors. Deere had a few others at the top. There's also a smattering of larger CaseIH stuff, powered by Cummins on the top of the lists. I don't have a real current book of tests, but from what I remember, the most efficient tractor ever tested at nebraska was the Ford 8870, which was the first tractor to crack the 20.00hp-hr/gal. It was promoted quite heavily at the time as I recall. That said, those are only numbers, taken at a full rated speed pull on the dyno. Some will do better, and some will do worse relative to power output, depending on engine speed.
That said, I've found that my 4000 will generally burn about 1 gal/hour doing most jobs. It's always been quite efficient for it's size. However, one point that is often overlooked on modern tractors is the amount of oil they pump. They pump and pump and pump, and that costs money. Large parasitic losses. The old tractors like the 4000 didn't move much oil, and it covers some of the sins of their engine inefficiencies. The newer engines are generally more efficient. For what it's worth.... Rod
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