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Tractor Pulling Discussion Forum

Considering pulling with a Farmall H

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01-26-2005 22:55:56

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Normally I just lurk here so I asking for your thoughts.

This summer I would like to start doing some pulling. I have a Farmall H that runs good but is bone stock with 150-155 PSI / cyl. Since I know next to nothing about pulling was thinking of Farm Stock. Would this H be competitive? What are some low cost changes I can do to this rig?

I am currently researching tires and trying to locate some local pulls in the N. FL / S. GA to cut my teeth on. Thanks in advance.

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01-27-2005 16:54:39

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 Re: Considering pulling with a Farmall H in reply to ShepFL, 01-26-2005 22:55:56  
It could be competitive. Id keep a short set of wheels on it, like a 15.5 or smaller, (not a 14.9X38) Tire height will alter the ground speed of your H, and too much ground speed with a lower HP engine will end up stalling it out too soon on the track. Try to keep the ground speed slower, that way you have more rpm, and power on the high end of the rpm range for the HP it produces. at 152 cubes, 150-155 psi, your looking at close to 35 hp. Think about lightening it up considerably, lose anything you can afford to take off the tractor. A good starting weight for an H with cast wheels is around 4000lbs, your engine should have enough to pull decently at that weight in low gear, it will be working the engine pretty good at the end of the run, but should be a good ride for what it is. ChadS

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01-28-2005 08:50:45

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 Re: Considering pulling with a Farmall H in reply to ChadS, 01-27-2005 16:54:39  
Also, Look at the rules for your hitch specs. If you are allowed to modify the hitch, Id take that into consideration as well, or if not, and have to run the stock hitch, (no drawbar) try to keep the hitch pretty level, not angled up, or down too much, and keep the clevis bolted as close to the hitch itself without excess shims to gain the hitch height, it throws the balance off real bad on the H when overshimmed at the clevis. also a safety factor is involved that way too. too long of bolt can bend and break. On my 3500-4500 farm stock Super H, low gear puller, the tractor is around 3750 base weight with the driver. It has spoked rims on the rear, and cast on the front with one front tire full of water for weight, then add a front tire weight to compensate. We have a 20 inch front end raise rule in our club, if it comes above 20 inches, you are DQ'ed, so had to figure out a basic set up for certain tracks to keep that nose down under 20 inches under all types of tracks. Really, it made a world of difference in the balance of this tractor, when the front comes up, you can feel it take off and speed up a bit, till the ground speed catches up, and lowers the front end back on the track, till the next tough spot on the track,,,,, and back to it again. Thats not using any kind of extended weight bracket on the nose, just weights on the wheels, (no suitcase weights anywhere,,, yet) H's have good potential for balance at 4000 and up, when you get below that, and try to run 3500, the front gets awful light, no room to move weight around. Unless you build custom liteweight front ends hubs etc etc to get that light, and keep the nose down, but, there is other ways to compensate for the front end raising, hitch height can be dropped a bit to hold the front end down longer, distance wise on the track so it does not spin out from losing the bite cause it loses the hitch height from the nose being too high and over center not creating a forward movement when the front does come up. Sure hope this makes sence, Im just rambling here a bit, but its some of the things I keep in mind for my H pullers. ChadS

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Jeff Oliver

01-27-2005 05:51:08

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 Re: Considering pulling with a Farmall H in reply to ShepFL, 01-26-2005 22:55:56  
Depending on the rules you have for Farm Stock in your area determines what all you can do. If they allow you to change your hitch then get it right to the limits of what is specified. here you can run 18 inches from the center of the rear axle and 20 inches high. If they allow hanging weights make some brackets and use them. balance is a big part of pulling. I would also recommend some type of a good wheelie bar if you move the hitch around like that as ya never know when you will get that really good bite!

If they specify the factory hitch and only factory weights then just get the hitch as close to the tractor as possible. and have fUN!!!!!

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01-26-2005 23:12:40

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 Re: Considering pulling with a Farmall H in reply to ShepFL, 01-26-2005 22:55:56  
Farmalls are always great to start on. First thing I would do is talk to ChadS about your carb and governor spring. Those two changes will help a bunch. Next, you are gonna want to get a little bigger tire than what you have on it probably. Since it is bone stock, you probably have a 12.4x38 on it. Moving up to a 13.6x38 is a good move. If it can take a little bit more tire, just keep moving up tire sizes as the rules allow. But most of all, keep an open eye. If lots of people do something and it works for them, there is probably a reason they are doing it. Just pay attention to other tractors and the changes they have made. Watching that and keeping your tractor up with the competition with help most of all.

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