Posted by Jason Kozlowski on January 02, 2013 at 17:10:33 from (198.228.201.147):
In Reply to: Hydraulic dovetails posted by Jason Kozlowski on January 02, 2013 at 15:08:56:
Yes, they all have a locking mechanism. However, most only use supports that block against the cylinders, similar to what is used to hold up some farm loaders when empty. Not only is this lightweight, but it uses the cylinder itself to transfer the weight of the load onto the two cylinder mounting pins. So the design is weak, and is limited in capacity. Brute avoids this by using seperate supports that remove 100% of the weight from cylinders. The Brute is actually rated to hold 10,000 lbs, so it is actually useful. Red Rhino may have a better/stronger locking and support system, but they use lighter lift cylinders than the Brute. Red Rhino uses a square tubular sliding sub frame that slides in and out of place with a hydraulic cylinder. When it is slid into place, it would literally need to break the whole sliding sub frame before the dovetail could fall. There is no rating given for it, but I intend to call and find out. The downside is that the dovetail must be locked up to haul. It seems that the manufacturers don't think anyone would ever have a need to have it stay in the down position.
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Today's Featured Article - Hydraulic Basics - Part 2 - by Curtis Von Fange. In the last entry to this series we gave a brief overview of hydraulic system theory, its basic components and how it works. Now lets take a look at some general maintenance tips that will keep our system operating to its fullest potential. The two biggest enemies to a hydraulic system are dirt and water. Dirt can score the insides of cylinders, spool valves and pumps. Wate
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