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Torque to drive an eccentric mass
We did run a compactor in the air suspended by just the backhoe. I recorded only a few data points, but it seems that the operating pressure is approximately 50% of what it was on firm ground. The compactor is suspended on four rubber mounts acting in sheer which do get hot. There is another...- jrstripe
- Post #14
- Forum: Mechanical engineering general discussion
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Torque to drive an eccentric mass
We actually do have decent 65mm (mean dia) spherical roller bearings. A calculator on SKF's website estimated a frictional loss of ~171W (.23hp) for both bearings. In testing of the compactor's bigger brother, which happens to use the same bearing, they never got hot. That makes me think it...- jrstripe
- Post #10
- Forum: Mechanical engineering general discussion
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Torque to drive an eccentric mass
JHG, I know what you thinking, because I struggled with this too. At first glance, I thought constant speed meant no acceleration which meant no torque. And that is true, but a mass on frictionless bearings will consume no power once it is in steady state only if it is perfectly balanced...- jrstripe
- Post #3
- Forum: Mechanical engineering general discussion
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Torque to drive an eccentric mass
This seems a little like elementary dynamics, but I can’t seem to find an answer anywhere in my recourses or on the web. I work for a company that, among other things, makes vibratory plate compactors that mount on the end of backhoe booms. The compactors have a single eccentric mass that is...- jrstripe
- Thread
- Replies: 13
- Forum: Mechanical engineering general discussion
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Landrover winch.
There are manufacturers that sell hydraulic winches. In the applications that I am familier with they are driven by the power steering pump and use a two-position valve to divert oil to the winch. Take a look at Mile Marker's website. If you could find a used pump then the only other things...- jrstripe
- Post #4
- Forum: Transmission, Driveline, Hybrid Drive engineering
