Have had, owned, and operated tractors with both the 8 speed and the 15 speed powershift transmission. The 8 speed is a good transmission, but we always found it lacking with the large gaps between gears when doing heavy pulling for tillage. I did like the 8 speed for those tasks such as planting, cultivating, hauling grain, etc The 15 speed is quite a bit better in that it does have more gears and smaller gaps between the gears, making it a very good transmission for all tasks. I especially like the modulation feature for the neutral to forward or reverse gear shifts when stopped. I have spent quite a bit of time in the early 8000 series tractors with the 16 speed powershift, and I recall when one moves into the field range gears, the gaps are even smaller between those gears, in which the operator can find more choices than even the 15 speed in the 50 through 60 series JD tractors. I only operated a 7000 series briefly with the PowerQuad transmission and found that to be a nice set up. I have never operated one with the 19 speed powershift, so I know nothing about it. I am aware of the latest offerings from Deere providing what is called their E-23 powershift transmission, but know nothing about it, nor have I operated any of their machines with the IVT either. The Case IH Magnum tractor line has a very good 18 speed powershift transmission, too.
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Today's Featured Article - Talk of the Town: The Saga of Grandpa's Tractor - by The following saga is from the Tractor Talk Discussion Forum. Someone. The saga starts with the following message: Hey guys I have a decision to make. I know what you all will probably suggest and it will probably agree with me way down inside, but here it is. I have a picture blown up and framed in my "tractor room" of a Farmall M. It was my Grandpa's tractor, of which whom I never got to meet. He froze to death getting this tractor out of the barn to pull a truck out of the ditch before I was born. Anyway my dad and aunt had to sell it at the auction,
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