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Farmall & IHC Tractors Discussion Forum

Shifting help

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Mitchell Pool

12-07-2003 14:02:09

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I am 15 and i have a 1952 M, when i shift should i take off in 4th and then go to 5th or take off in 5th right away?

Mitch

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Hugh MacKay

12-07-2003 15:38:04

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Re: Shifting help in reply to Mitchell Pool, 12-07-2003 14:02:09

Mitchell: There is a process called double clutching, hard to do on a tractor as your rolling speed is not fast enough. This was used in big trucks for years. It worked reasonably well on Farmalls before the days of TA. It is best to practice this on slight down grades. A tach is also ideal.

Sequence of this is bring tractor to full throttle in 4th, depress clutch and remove shift from 4th to neutral, at same time you throttle back tractor and release clutch when tractor is in neutral. This slows front shafts and clutch to match 5th gear. You then immediately depress clutch again and slip tractor into 5th.

As young lads my brothers and I mastered this on letter series Farmalls. Trucks of that era had to be shifted this way or use no clutch at all just adjust your throttle to match gear you are going to. You would find this much easier if you had an old truck to practice on. Because the tractor rolling speed is so slow this is quite difficult, but not impossible.

Something you may try to give you a feel for this is get your M on reasonably level ground. Practice going from 2nd to 3rd and back again without using clutch. Just let off throttle enough to allow shift lever to neutral, the trick from here is to adjust throttle so engine speed matches transmission speed and be fast as tractor loosing momentaum is also a factor.

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Paul in Mich

12-07-2003 16:57:27

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Re: Re: Shifting help in reply to Hugh MacKay, 12-07-2003 15:38:04

Hugh, If you can master shifting without clutching, you can eliminate a lot of gear grinding. I go through 13 speeds with a split transmission on the grain trucks without using the clutch except for starting out in 1st gear. It sure reduces wear and tear on the transmission and the operator not to mention U-joints. It does take a little practice tho, especially shifting from 4th to 5th on a tractor.

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Hugh MacKay

12-07-2003 17:41:38

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Re: Re: Re: Shifting help in reply to Paul in Mich, 12-07-2003 16:57:27

Paul: I remember in early days of grain for me, 427 Chevy single axle tractor, with 22' aluminium dump. 5 speed with 2 speed axle I was coming home empty, and a pin came out of clutch linkage. Needless to say I didn't split shift but once, on the way up. I was on down grade when I discovered this, started the Chevy in 1st low and ran two stop signs and a red light by time I got home. It was pouring rain and I was just glad I knew how, to shift without clutch.

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williamf

12-07-2003 14:25:42

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Re: Shifting help in reply to Mitchell Pool, 12-07-2003 14:02:09

Start out in 5th. There's no syncronization (dern I wisht I could spell) whatsoever in these, and nobody is as good at matching speeds as they think they are. Always come to a full stop before shifting.

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supermpuller4

12-07-2003 16:58:26

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Re: Re: Shifting help in reply to williamf, 12-07-2003 14:25:42

Old trucks and cars tranny weren't synchronized and you could shift them a IH M or H is no different, I use to plant with a H down shifted to 3 when turning and then back up to 4 to plant most of the time I didn't use clutch, I messed up once or twice a day.

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