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Farmall & IHC Tractors Discussion Forum
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shifting a H

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c1802362

11-17-2018 15:20:05




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For as long as I've had my Farmall H's, the practice has been to shift gear only while at a dead stop, brakes full, and clutch all the way in. I just read a thread on this site that suggested shifting while moving was acceptable.

Is this correct? What is the procedure if this is allowed?




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tomdowling

11-18-2018 07:30:00




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 Re: shifting a H in reply to c1802362, 11-17-2018 15:20:05  
It's called double clutching and the primary reason for learning to do it is to keep from having to slip the clutch to start off in 5th gear. Start off in 4th low to middle throttle, accelerate to full throttle push in clutch and drop throttle to idle and take out of gear push in clutch wait until tractor is rolling at same speed as it would be if in 5th gear idling and then try dropping it into 5th, you can kind of feel when to do it. Once you get the hang of it you won't be grinding gears and you'll be extending the life of your clutch when pulling things in high gear.

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Ellis Kinney

11-18-2018 06:09:43




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 Re: shifting a H in reply to c1802362, 11-17-2018 15:20:05  
While you are learning to do this you will be grinding gears. Are you really in that big of a hurry??? If you are using an H you probably have some time on your hands anyway. I have an M and always stop to shift. Ellis



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fbh44

11-19-2018 06:25:40




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 Re: shifting a H in reply to Ellis Kinney, 11-18-2018 06:09:43  
Yep, me too. I tried it a few times, ground gears, decided not worth it.



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c1802362

11-17-2018 17:17:49




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 Re: shifting a H in reply to c1802362, 11-17-2018 15:20:05  
Guys,

thanks for the video - I'll go out and try it this weekend

Art



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Red Dave

11-17-2018 16:22:07




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 Re: shifting a H in reply to c1802362, 11-17-2018 15:20:05  
Yes you can, but it takes a bit of practice. Bob M's video shows how very well. It's not speed, it's timing.

On an H or M, I can usually do it 3-4th & 4-5th unless it is pulling a load.
I can't do it in the lower gears.

On my B I can from 3-4, but again lower gears not so much.

Occasionally, I can downshift, but conditions have to be right and I have to concentrate on it or it grinds.

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Bob M

11-17-2018 15:39:04




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 Re: shifting a H in reply to c1802362, 11-17-2018 15:20:05  
It is indeed possible to shift gears up and while moving (I've done it successfully for 50+ years on Farmall, Oliver, Allis, Case and M-M tractors).

However it is possible only under certain conditions: No load, and with the tractor rolling on a hard (low rolling resistance) surface. Key is to modulate engine RPM then double clutch to match transmission input shaft speed to the gear you are shifting IN to.

Here is a video demo of a 4 - 5 upshift on a Super M. Shifting your H is is done exactly the same.

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DR. EVIL

11-18-2018 15:35:09




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 Re: shifting a H in reply to Bob M, 11-17-2018 15:39:04  
BOB - You couldn't shift those 2 cylinder Deere's on the fly with that stupid gated shift quadrant and hand clutch with the brake? I never even tried!

In our hills doing road work with an H or Super H you had to downshift on about half the hills. Dad had to run the M with the 2M-E picker pulling both our wagons 20 miles including some pretty good hills but the M pulled most of them, only down shifted on 1 or 2.

Back about 35 years ago I could start out in 1st and shift up to 5th and downshift back to 1st without grinding a gear tooth. I can still do 4th to 5th and back to 4th, don't spend the hours per week on it anymore.

The two summers I hauled ready-mix with a twin-stick 5+4 in my White really helped my shifting.

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FastFarmall

11-18-2018 06:50:08




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 Re: shifting a H in reply to Bob M, 11-17-2018 15:39:04  
I wished the dealer had told the older generation farmers, how to do that!



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