You OUGHT to know, since you had one... that 540 on a 4 cylinder Ford chassis is found at 1900. 1000 is found at 2060. Some of the 3 cylinder chassis tractors achieve speed as low as 1650 with most at 1750 or 1800. The Deere in question, IIRC, achieve both 540 and 1000 at somewhere around 2500, hence there is no ability to throttle back and maintain speed. The Ford's also do not make rated power at rated PTO speed. They only make rated power at 2100 or whatever governed speed happens to be on a particular model. My point to you is and has always been that when you throttle the Ford back to PTO speed, in it's economical range, it will not burn near the fuel it would use if it ran at 2100. It was one of those nifty common sense design things they did in realising that an 86 hp tractor didn't need to drive full power through a 540 shaft... so the gear sets for 540 and 1000 reflected two different engine speeds. If you take that Ford and put it on a chopper or something that requires all it's got... it's going to make the chopper howl at about 1150 at high idle... which I don't see as being a particularly big deal. At that speed, no, it's not as economical as the Deere. The difference would seem to be that the Ford's cam profile encourages breathing and torque at mid speed. The Saran engine makes torque at higher speeds and has better efficiency at higher speeds because that's how it's designed. That's just a questionable design criteria for a utility type tractor... not that they're a bad tractor in other respects. Quite a good one actually.
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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