Posted by 2002sliverado on July 19, 2018 at 20:25:56 from (142.54.26.150):
In Reply to: Quadrange vs TA posted by Bill VA on July 19, 2018 at 16:26:48:
I think it is going to somewhat depend upon the model tractor built. Thinking back to when I was in high school during the final years of IH, and in years following, a 1086 was a pretty durable tractor, while the four 1486 tractors in our neighborhood needed a zipper in the rear end due to the bull gear final drives, and the three 1586 tractors could not keep a torque amplifier in one piece, until the owners finally put the Hy-Capacity torque amplifiers in them. I never cared for the left hand transmission controls and the lack of synchronized gear shifts in the 66 and 86 series IH tractors. The Quad Range Deere tractors held together quite well, but I thought the lack of synchronized gear shifting from forward to reverse was a bit of a shortcoming. The old 8 speed synchro was better than the quad range when the tractors were used on front end loaders, when shifting from forward to reverse. I am more of a Deere fan, but I did think the STS transmission IH had in their 5X88 series tractors was a really nice transmission set up, and I feel it offers advantages over the Deere quad range. My 4640 is used in the field in most generally B1 and B2, or C1 and C2. When used for fall tillage, it mostly is in the low end of B range, and for spring tillage, it is in the low end of C range. When planting corn, it is the low end of B range, and in soybeans it is in the low end of the C range. My preferred transmission happens to be my 15 speed powershift, but I have that in only one tractor.
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