Re: Straighten Me Out

Posted by CNKS on May 13, 2004 at 19:39:52 from (207.178.96.213):

In Reply to: Straighten Me Out posted by Allan on May 13, 2004 at 11:40:22:

IH drawbar ratings for the H was 25 and a fraction, the M was 34 and a fraction. I don't think there was any factory power increases in either until the Super H and M came out. They were available with gas, kerosene, and distillate engines, most would have been gasoline after WWII. The non-gas engines produced less HP regardless of the fuel that was used. Different style pistons were offered by IH for rebuilds, if installed they would produce more power. I don't think you can make an H into an M without reboring. The Super H had about 31 drawbar, the 300 HP would be pretty close to the old M, but it's still not an M because of the weight. The M weighed more than 1300 lbs more than the H. I suppose a 300 weighted so that it weighed as much as a stripped M would pull as much, but both would have to be pulling in gears that had the same speed, to be fair. Also the M produced its power at a lower rpm than the H. Pullers with highly modified tractors might disagree, but for farm purposes, an H is not an M, even with firecraters. As to the NE tests, when I look at them comparisons are difficult to make, because they don't seem to weight the tractors the same or run them in the same gear. I suppose they optimize the tractor for the way it should be set up, but this sometimes gives an unfair weight/transmission gear combination. Probably why I'm not an engineer.

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