Re: Farmall M - Which One?

Posted by LenRahilly on November 08, 2006 at 13:23:18 from (24.50.99.60):

In Reply to: Farmall M - Which One? posted by Clarkbug on November 06, 2006 at 18:04:32:

I've spent a lot of time on F-12's, F-20's, 10-20's, A's, B's and H's. Recently had a chance to spend some "quality time" on a Super M. Comments:
An H feels a lot like an F-14: small, fast-running engine, not a lot of torque, easy to steer, fairly comfortable for its day. Beautiful to look at, but the F-20 on rubber would run rings around it. Super M: heavy steering because of the weight of the machine, kind of clumsy-feeling for a chore tractor. I wouldn't buy one for light chores requiring an agile tractor. Out in the field, it's a different story: big, torquey engine, and you kind of feel like you're commanding a ship. Loved the S-M for field work.
Watch out for a worn clutch-pedal bearing. The width of the platform means that the driver's foot pushes the pedal sideways as well as forward. Eventually, very sloppy pedal; your foot can slip off, and that could be dangerous. Machine shop could probably insert a bushing to correct this.
H and M very sturdily built. One drawback for farm use: the fifth gear is so fast that it is worthless at 5 or 6 mph, the speed you might want to pull a loaded wagon over a washboard country road. The engine would be practically at idle, and there is not enough torque for this with a heavy load behind, especially in the H. There should have been an extra gear of around 7 or 8 mph, like on Oliver 70 and JD A and B. Suspect it was an engineering decision to save money: Fifth gear on H and M is "straight-through," just like the third gear in traditional American car transmissions. There are no gears involved--just a sliding dog clutch that connects the clutch shaft to the output shaft. Can be locked out, by the way, by screwing down a bolt in the transmission cover. That is what IH did when they sold these tractors on steel. At full throttle in fifth gear on a bumpy road (about 18 mph at no-load governed speed, I'd guess), the ride can be, shall we say, exciting when the front wheels begin to shimmy (may be a problem only with older tractors which have some wear in the steering gear; both my father's H's did this)

Replies:

• Re: Farmall M - Which One? Clarkbug 18:44:09 11/08/06 (2)
  • Re: Farmall M - Which One? LenRahilly 07:08:10 11/09/06 (1)
    • Re: Farmall M - Which One? Clarkbug 16:25:03 11/09/06 (0)

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