Posted by ericlb on January 19, 2013 at 07:37:51 from (70.41.96.39):
In Reply to: Re: grain bed hoist posted by ihman73 on January 18, 2013 at 21:56:45:
here the dangerous part, and this is from personal experience, a single hoist is mounted in the center of the bed as well as the truck frame weather its a front hoist or a scissors lift, a twin cylinder hoist has the cylinders mounted outside the trucks frame on each side, fairly stable, until a hose breaks, and they will break, eventually, when that happens the cylinder with the broken hose collapses, if the load is still partially on the bed at this time this will pull the truck over on its side, 100% of the time, the first time i saw this a man standing 10 feet from the truck was killed, when the truck landed on him, the second time i saw this the truck driver lost his arm which was thrown out the cab window and crushed under the truck cab when it landed on its side, ive heard of many other twin cylinder mishaps, but these 2 i saw, [ the truck was repairable in 1 of these], by comparison a single cylinder hoist is a little less stable but only requires a driver with some common sense to dump the truck on level ground, in case of a hose failure the cylinder collapses, straight down onto the truck, if its still loaded it may or may not bend the truck frame, and it will make the driver and anybody standing in the area need to change his pants, but they will still be alive, and the truck may still be fixable,, after all my years around dump trucks i would never have a twin cylinder setup,
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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