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 - Earthmaster Project Progress Just a little update on my Earthmaster......it's back from the dead! I pulled the head, and soaked the stuck valves with mystery oil overnight, re-installed the head, and bingo, the compression returned. But alas, my carb foiled me again, it would fire a second then flood out. After numerous dead ends for a replacement carb, I went to work fixing mine.I soldered new floats on the float arm, they came from an old motorcycle carb, replaced the packing on the throttle shaft with o-rings, cut new ga
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