Posted by El Toro on January 08, 2015 at 05:31:11 from (96.244.7.206):
The Knuckey Truck Company in CA built these trucks during WW2 and the Pacific Car & Foundry in WA also built them. They used A Hall Scott gas engine. We ran one of these engines on a stationary dynamometer for 1000 hrs. There was no wear on the crankshaft or bearings. Knuckey truck also built this field dynamometer after the war known as the M7 and the trailers. They all had the same chain drive as the M26. The M9 was a medium dynamometer had the same chain drive. This vehicle had a 500hp Ford engine and a Reo engine. It would hold a drawbar pull of 20000 lbs. Later a small dynamometer was built known as the M8 using a Ford truck with a retarder. It was for light vehicles. I think they still have it. Pac Car also built the M578 a light recovery vehicle. We tested it in the 1960's ran drawbar & cooling tests. We also ran a lot of winch tests using an M48 Tank for load and the M578 was sitting on top of a 40% black top slope. It was a very good vehicle we used a load of 60000 lbs when winching in and 30k when paying out. The only problem was the hydraulic oil over heated quickly. So we installed an oil cooler to circulate the hydraulic oil. Anyone remember the Goers? The 8 and 16 ton. We sank one of the 16 ton during an amphibious test. Several of us got wet. No damage to engine. Hal
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Today's Featured Article - Hydraulics - Cylinder Anatomy - by Curtis von Fange. Let’s make one more addition to our series on hydraulics. I’ve noticed a few questions in the comment section that could pertain to hydraulic cylinders so I thought we could take a short look at this real workhorse of the circuit. Cylinders are the reason for the hydraulic circuit. They take the fluid power delivered from the pump and magically change it into mechanical power. There are many types of cylinders that one might run across on a farm scenario. Each one could take a chapter in
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