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Re: Re: Re: Farmall M-four bottom?
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Posted by Denny Frisk on October 31, 2001 at 09:57:01 from (12.4.181.2):
In Reply to: Re: Re: Farmall M-four bottom? posted by Ralph on October 31, 2001 at 06:34:59:
Ralph - It's all about torque and the loads that torque puts on the shafts & bearings at right angles to the centerlines of the shafts. Einstein's theory of relativity says something about equal & opposite forces & reactions seems appropriate here. 2nd gear in an M is about 3-1/2 MPH, 3rd is about 4-1/2, and 4th is about 5-1/2. So if You take 50 HP full load in second as the baseline load, since Your still only making 50 HP, but faster speed in 3rd, the torque going thru the transmission in 3rd is only about 78% of what it was in 2nd. If You go to 4th, it's only about 64%. HP is nothing more than torque or force times speed. There's other factors involved, like as You shift up higher thru the gears of an M, the mating gears get closer to the pilot bearing between the constant mesh gears and the sliding gear shaft, and that pilot bearing IS a weak spot in the M's, but the reason it's located next to 4th gear is because the force on it is WAY less than if 1st gear was located there. The pilot bearings were increased in size in the Super Series. I've pulled 4-14's with a Super M-TA in 2nd. And Dad's '51 M would outpull the M-TA every day, so Yes, an M will pull 4-14's but it would be better off pulling 3-14's or 3-16's faster. To pull 4-14's would require more ballast to reduce slippage, and all kinds of other expenses. There's NO WAY any machine can withstand an operator determined to tear-up the equipment He's operating. Same goes for hitting rocks when plowing or ???. Didn't have any rocks where I grew up. In fact, I could never even find any arrowheads! even whan I was looking for them when I was cultivating.
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