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Farmall & IHC Tractors Discussion Forum
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Getting M/H Into 5th Gear

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City-Boy McCoy

08-20-2006 04:30:55




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What is the proper way to get an M or H into 5th? I have seen guys start off in a lower gear and grind them into 5th - which seems abusive to me (although my great uncle could do it with minimal grinding.) I have also seen guys start from a dead stand still in 5th and slip the clutch in the process - which also seems abusive to me. I don't know how you would do this when pulling any implement of any weight???? So.... what is the best procedure to get into high?
(My little super A's seem to do fairly well starting off in high gear.)
Thanks.
mike

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City-Boy McCoy

08-20-2006 10:10:55




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 Re: Getting M/H Into 5th Gear in reply to City-Boy McCoy, 08-20-2006 04:30:55  
Thanks for the information, fellows. Having raced sedans on sports car tracks for 15 years has given me pretty good experience with double clutching, heel and toe, shifting without a clutch, power shifting, throttle synchronizing, etc. I just had no idea whether any of that was done on a tractor. Of course, it does seem like it would be much easier in a car, with a throttle PEDAL, rather than a throtle arm between the spokes of a steering wheel! Like somebody said, you need three arms on a farmall. I'll get it done with some practice. Thanks again. You guys are the greatest help; I really appreciate you all.
mike

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the tractor vet

08-20-2006 06:52:21




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 Re: Getting M/H Into 5th Gear in reply to City-Boy McCoy, 08-20-2006 04:30:55  
Ever heard of a phares calle DOUBLE CLUTCHEN ????? Now if any of you boys ever drove large car then ya know what i am talken about . And over here in the humps and bumps wether you were haulen a load of hay or a load of corn from farm to farm on the road there are many times when the horse under the hood is not big enough and pullen the T/A back still ain't enough . Years ago we had a MD with a M&W 9 speed that we used on the road for haulen wagons and it was about the nicest for being able to shift on the fly by double clutchen as it split the gap between 4th and 5 th but when ya had two gravity boxes loade to the max with ear corn most times ya felt like you were driven and old 238 detroit and even stright 4th was not enough to make it to the top of the next hill and most time you were down in second with the black smoke pouren out the pipe and shame on you if ya missed a gear as you would be about 20 ponys shy of having enough power to break the laod off the hill in low. Even our 450's were a bit shy on power with the fuel screw and torq. screw backed out as it was 3rd low for them and third low is lower the stright 2nd.

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NDS

08-20-2006 06:08:36




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 Re: Getting M/H Into 5th Gear in reply to City-Boy McCoy, 08-20-2006 04:30:55  
Like Allen said it is just comes with practice. When I drove H & M most every day I could shift to 5th on the go without a scratch I just pressed clutch, throttled down waited for exact time and pulled in in gear but am not that good at it now.



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RAW in IA

08-20-2006 05:34:47




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 Re: Getting M/H Into 5th Gear in reply to City-Boy McCoy, 08-20-2006 04:30:55  
Dad had a C, H, M, and 350. When starting out in lower gear nad going into high, the biggest secret is not to get in a hurry. Let the engine slow down when in neutral, double clutch, and it won't grind much going inot high. Also, I found that I could start off in high with light loads better if I didn't open the throttle but a litle to start off, then throttle up. Easier on the clutch. Same way with my Cub. The 350 with the TA was easy to start off in low side, or split shift from 4th high side to 5th low.

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Allan In NE

08-20-2006 05:27:07




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 Re: Getting M/H Into 5th Gear in reply to City-Boy McCoy, 08-20-2006 04:30:55  
City Boy,

Back when these tractors were built, there was no such thing as speed syncronizers or automatic transmissions. Cars, trucks, tractors and pickups all had to be shifted to "miss the grind".

Everyone just knew how to drive and "catch the shift". It was just something you learned along the way.

Allan



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Leroy

08-20-2006 05:12:22




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 Re: Getting M/H Into 5th Gear in reply to City-Boy McCoy, 08-20-2006 04:30:55  
The 41 H we had you only used 5th gear on the road and you had to be rolling full in 4th before trying to shift to 5th and I could do it with NO grinding. Also to start out that heavy load toget rolling would start out in 3rd and shift to 4th with no grinding then to 5th with no grinding. This is the way would do it hauling a wagon of grain to the elevator. You could upshift as easy as the stick shift in your car but when it came to downshifting it was a different story. 5th to 4th could be done on the roll but 4 to 3rd about needed a stop. But you could NEVER get a load rolling in 5th to start as you did not have enough power, like starting out that 4 speed stick car in high gear, you can't do it and have anything left.

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Wardner

08-20-2006 05:11:14




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 Re: Getting M/H Into 5th Gear in reply to City-Boy McCoy, 08-20-2006 04:30:55  
Throttle control is the key to clean shifts. People who drive trucks fitted with something like a 13 sp Roadranger don't even use the clutch on most shifts. That's going up or down. The shifts are made when the engine RPM is correct. It is all done by ear as it is a bother, and time consuming, to get a good reading on the tach.

A Farmall driver needs three hands to operate the shifter, steering wheel, and throttle. I have put my shifting arm (left arm) through the steering wheel and worked the throttle with the other hand and arm. It works best when on level ground or, better yet, going down hill. These tractor motors don't slow down very quickly due to the heavy flywheels.

Things get even more complicated when trying to split shift a TA equipped tractor. Although I am not a farmer, I think you will find most farmers will grind a pound here and there and not worry about it.

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Wardner

08-20-2006 05:59:20




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 Re: Getting M/H Into 5th Gear in reply to Wardner, 08-20-2006 05:11:14  
RAW mentioned double clutching and I should have as well. It is a technique used with "crash boxes". It simply means the clutch is momentarily engaged as the shifter passes through neutral on its way to the next higher gear. There is no advantage to double clutching on a down shift. Non-synchro trannies are easier to down shift because the throttle setting can remain high. The shift is made when the travel speed is correct. As you can probably tell, shifting this old machinery takes some experience. The best mechanical sound in the world is a flawlessly down shifted 13 sp two-stroke Detroit Diesel. Very difficult to do when the split shift comes up.

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