![]() ![]() Which raises another question: What is the amount of force required to roll an object (say, a 3000 lb log), assuming that the log is straight and round and the ground is level and flat. Does this reduce the load to the snatch block that attaches to the winch line? I use 2 for stability, but it would be good to know if a second par buckle line adds to the mechanical advantage.Ĭontributor S, yes, rolling a log (even uphill) requires much less force than picking it up. I use a double par buckle (one on each side of the log). ![]() Par buckle behaves like a double line pull with the log acting like a snatch block. ".the amount of mechanical advantage when using a par buckle."Ĭontributor G, of course. Don't know if a log arch can be used with draft animals. ![]() Both handlers and animals need to be experienced, especially on slopes or close quarters. There will be some disturbance of course, but a lot less than skidders, dozers, etc. Other than helicopter removal, about the only other means I know of to skid logs with minimal forest floor damage is draft mules or draft horses. And I think you get an advantage from any ramp involved, which in essence is another machine. Anyone have suggestions regarding this?īlock and tackle gives you a mechanical advantage equal to the number of lines for dead lift/pull. I have been thinking of a type of arch that would lift the log entirely with a third wheel up front and the ability to be towed by a winch. Does anyone know how to calculate this?Īlso, I'm finding that I could get some really great logs (and big) from some landowners if I can remove the logs without disturbing their property (no trucks, 4x4s or other heavy equipment). I understand that a snatch block can 1/2 the load to the winch as long as it is doubled back 180 degrees (double line pull), but what has me scratching my head is how to calculate the amount of mechanical advantage when using a par buckle. When loading logs, I back load them on my trailer using a double par buckle attached to a snatch block, through which the winch cable passes on its way back to the front of the trailer. ![]()
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