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farmall super m pulling problem

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super_m damnit

03-31-2008 22:09:14

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I put new tires on rear of my 54 super m let pressure down to 8 psi when i hook it to sled at pulls every month the tractor just spins all way down track How do i stop this? do i need bigger tires? cut drawbar closer to tractor? im lost on this one

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the tractor vet

04-01-2008 07:50:04

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Re: farmall super m pulling problem in reply to super_m damnit, 03-31-2008 22:09:14

Well first off what size tires do you have ???? The best set on and old M and this comes from Exper. here is a set of 14.9x38's on a 15 inch rim . Keep the tire pressure UP at 15 lbs. as any lower they buckle in the center and you also lose drawbar hight . a shorter draw bar will help some . To go play with the big boys the next stop in in the engine dept. To play in the pure farm stock classes your going to have to get a few more cubes and a few more ponys . To start off with atleast taken the old M out to 281 add in some high alt. pistons a 450 cam and nothing less then a 400 head 450 gas head with the high alt. pistons would be great along with a 450 manifold doing some trick work on the dist. a little carb work bring the rpm's up to the max allowed . When i was still pullen my S/MTA i learned real fast that low tire pressure did not get it and ran my 16.9X38's at 18 psi and had more bit when the load came on and the tire did not smash down keeping my draw bar hight. But in my HOP the 16.9X38 was a little tomuch tire and a 14.9 would have been just wright. I also needed more ponys under the hood as the 60 that i was getting was 20 less then what i needed . But just where do you draw the line to go win a 7 dollar trophie . I have enough of them and with all of them put together and a buck and half it will maybe a cup of coffee. The two best winning pullen tractors that i ever put together were a old narrow ft 706 gassed with fast hitch and a Minnie MO U With the most money spent on the MM at a grand total of 3786 bucks including the tractor and tire And the olny new parts bought were the rings bearings and gskts. The rest of the pices and parts came from DUMPSTER DIVING Six used cummins 855 sleeves five used allison pistons farmall m connecting rods used JD valves and a rebuilt reground cam and oh forgot the new mil. surplus bendix carb. and a new msd 6 ing. system. That old ugly old pice of fence row junk would put no less then 75 feet on the best of them and was a fun ride as it would pull 5500 -7500 in 4th 95% of the time they were gate shots and the one time that the electric fuel pump quiet at the 265 foot mark and things stopped real fast. left me with egg on my face setting in the middle of the track dead .

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JThomas

04-01-2008 10:57:31

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Re: farmall super m pulling problem in reply to the tractor vet, 04-01-2008 07:50:04

I love the part about playing in the pure farm stock class you need to make all these changes . Thats whats wrong with the class. CHEATERS If you want to pull stock then put a plow clevis on the stock drawbar balance you tractor learn to drive it and have fun. There are rall kinds of classes for people that want to modifie their tractors. If thats what you want to do then do it and get in the class you belong.

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Pat-CT

04-01-2008 12:22:44

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Re: farmall super m pulling problem in reply to JThomas, 04-01-2008 10:57:31

JThomas the problem with pulling with a stock drawbar at least mine which i did was the first time i hooked it up to a stone boat when i started to move the chain was so short that the sled lifted up in the front okay but when thats loaded up a bit with weat that draw bar sheared right therew my sliding drawbar so i took a piece of one inch steel and bolted it ontop of the bar..is that modified?

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dej(jed)

04-01-2008 04:34:58

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Re: farmall super m pulling problem in reply to super_m damnit, 03-31-2008 22:09:14

I tried pulling with a SM and went no where. It would spin out all the time or simply not have enough power. It is geared too fast to pull with.You don't have enough engine to keep up with the gearing.

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Pat-CT

04-01-2008 04:03:02

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Re: farmall super m pulling problem in reply to super_m damnit, 03-31-2008 22:09:14

dont go full throttle it wont stall and if it starts to lug then give it more juice..match the rpm with the bite of the tires if you know what i mean

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ShaggyM

03-31-2008 22:22:52

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Re: farmall super m pulling problem in reply to super_m damnit, 03-31-2008 22:09:14

Try a little more air in the tires. You might not be getting a full bite because the tire is rolling up inside itself instead of running flat tread pattern.
just a thought.
Shaggy

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super_m damnit

03-31-2008 23:24:17

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Re: farmall super m pulling problem in reply to ShaggyM, 03-31-2008 22:22:52

i started with 20 psi and went all way down to 5 same thing everytime tractor acts like its to powerful for size of tires they are 13.6x38 i dont what originals were but thats what was on it wen i bought it thanks

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Ed Hodge

04-01-2008 03:55:26

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Re: farmall super m pulling problem in reply to super_m damnit, 03-31-2008 23:24:17

put 14.9x38 or 16.9x38 on the rear tires are to small for that tractor

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supermpuller

04-01-2008 07:17:36

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Re: farmall super m pulling problem in reply to Ed Hodge, 04-01-2008 03:55:26

A SM is one of the best pulling tractors around. You need hard 1/2 worn out tires and balance your tractor. What condition is your motor in do you have firecrater pistons, what hitch are you using?

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