mkirsch said: (quoted from post at 13:30:26 09/26/11) I studied physics in school, a lot...
I'm still kinda stumped at how a HORIZONTAL being pulled HORIZONTALLY chain can snap UPWARDS into the driver. The forces on the chain have no upward component.
The chain should snap in the direction of pull.
And it does. Generally. And I've broken a few behind the crawlers. What they will do is break a link or clevis and a vertical component develops as the pieces come apart lop sided. Especially true with a pin letting go in a clevis when one side pulls out first.
However the main reason is people screw this up yanking on a loose chain or strap, imparting vertical energy as it comes taut and rips apart.
This post was edited by M Diesel at 14:22:33 09/26/11.
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Today's Featured Article - A 1937 John Deere Unstuck - by Gary Hickman. Here is my story of how I got the pistons out of a 1937 JD B that the engine had been stuck for about 14 years: About 12 years ago my Dad gave me one of the tractors I ran as I was growing up on our farm in central Nebraska. The engine on this tractor, a 1937 John Deere "B", had been stuck for 2 years before he gave it to me. This last spring (1999) I hauled the tractor to our 2 acre lot in St. Libory Nebraska where it joined my antique machinery collection, at that time a 1929 Caterpillar T
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