Re: I Don't Get It

Posted by Paul in Mich on April 09, 2005 at 05:47:37 from (64.12.117.13):

In Reply to: Re: I Don't Get It posted by Hugh Mackay on April 09, 2005 at 04:19:12:

Rear doals are about the only way to transfer 100 or more hp to the ground. Single rears will take hp, but provide little traction by comparison. Traction and compaction becomes an even bigger issue with no-till. We no-till soys and corn, and we use 4x4 articulate tractors on everything except a 6 row JD 4820 planter which we pull with a 1456 International with duals. The 12 row planter has a 4-210 White articulate with 3208 210 hp Cat. The 30 ft JD 750 no-till grain drill has a 4568 (280hp) International articulate, and a 20ft JD 750 with a Massey 1500 210 hp 3208 cat. The 1456 will pull the 6 row, but even with the planter out of the ground, requires a lot of braking on the turns because of the rigid tongue. I used the same tractor yesterday to transport the 20 ft drill 10 miles to the maintanence shop, and noticed that the drill wanted to steer the tractor. Yep, it could use a set of brakes even tho they were serviced 2 seasons ago. The articulated tractors are much more forgiving for no-till as they compact the ground much less. In fact, we notice more compaction from seed wagons and fertilizer tenders than we do the big tractors. Articulates also do not tear up the headlands nearly as much as conventionals, and of course there is no braking. We have a neighbor who uses an 8400 JD front assist on his 30 ft grain drill, and while the FWA does provide additional traction and reduces diging on turns, it is not nearly the match for the drill as our 4568 articulate. Once tractors reached the 150 hp range, it created a whole new set of operating circumstances. HP is one thing, but you are correct in that it is how it is applied to the ground that becomes critical.

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