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Tractor Pulling Discussion Forum

Re: Newbie

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MMZAck

08-02-2013 09:28:03
170.2.52.28



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Ah grasshopper, first you must paint fence. Haha. Showcrop is correct, the draft is the downward force on the hitch. As chain length gets longer, the angle is reduced and the downward component on the hitch is reduced because the horizontal component increases. In other words, it takes less power to pull the sled as the chain length increases.

If you want to learn a lot in a short amount of time, check out the Antique Tractor Pull Guide. There is a whole chapter dedicated to hitch physics. See link below.

What kind of tractor are you pulling? I personally love the light classes and have pulled an Allis CA, Massey Harris Mustang and MM BF at various times at 3000#. I'm rounding up parts right now to build something unique...

Zack

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north puller

08-02-2013 14:42:28
207.219.69.161



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 Re: Newbie in reply to MMZAck, 08-02-2013 09:28:03  
I don't know if i would say that a long chain would make the sled easier to pull. As a matter of fact, i know that with everything else being equal, i can pull much better with a short chain.

A short chain gives you much more traction and helps you to lift the front of the pan.

now, when you get really great traction from a short chain, you will drive on until you find the end of your power.

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