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CNKS
12-04-2006 07:39:32
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Re: Opinion Survey - M H Gearing? in reply to City-Boy McCoy, 12-04-2006 05:00:56
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I drove an H for probably 5000 hours in the 50's when I was between the age of 12 and 20. 4th is 5 1/8 mph with standard tires. With the equipment we had 4th was usually only used as a transport speed when the ground was too rough for 5th. The H does not have enough power to do much tillage in 4th, we only used it occasionally under exactly the right conditions. We did not have a "light" implement such as a rotary hoe or a hay rake that I am sure could be handled in 4th. IH ratings for the H, drawbar is 25.5, the Super H 31. I currently have a Super H but I don't farm and really have not pulled anything with it -- but I know enough about the differences in the H and Super H to make a guess. 4th in the H is 5 1/8, Super H 6 5/8 with standard tires. I really doubt that the Super H will pull more than the H in 4th gear, maybe even less, because the faster ground speed will cancel most or all of the additional 5 hp or so. For people with light tillage operations, or hay operations, which are light load, the increased speed is beneficial. Also, 3rd gear in the SH is virtually the same speed as 4th in the H. So with the same implement at the same speed, the H will pull it in 3rd at 4 1/4 mph, the SH will pull the same implement in 4th at 5 mph. So the SH should give the 5 mph tillage speed that the H does not have at 5 mph. Except for plowing most of the H tillage was done in 3rd gear. Much of it could "almost" be done in 4th, but the RPM's would simply not build to the max rated load rpm, thus the engine would not have lasted long. I burned a couple of sets of valves as it was. As to road gear, people make too much of the lack of power. 5th is direct drive in both tractors. It is simply better to start up in 4th, get it to speed and shift up. They are simply not modern tractors with 18-24 speeds which give an almost infinite number of speeds. I have driven some of those, but not much. An M&W would be beneficial, but you would have to have a use for it, such as hay operations. Those are not tillage gears. Larger tires will increase the speed, but they will also reduce the effective HP -- What do you intend to do with the tractor? That is the determining factor.
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