The first gear on the SMTA, 400, 450 are the same and there is no factory low-low first. However, a 560 gear set will fit and the owner can create his own low-low first. I have done it on a SMTA. I also swapped in the Farmall 560 ring and main shaft w/pinion for another reduction. When those reductions are combined with the TA low range, first gear is about half of the SMTA, 400-450 first gear in high range.
Tractor also has new 15.5 x 38 tires on new 14" rims, a pair of front wheel weights, a pair of frame weights, and five sets of rear wheel weights but it still won't out pull my 660 w/Elwood which is heavily ballasted too.
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Today's Featured Article - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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