Here is what it says:I use my box scraper as much for moving dirt etc. as road maintenance and have TnT so my preference is: HR35 & HRL35 Series Box Scrapers | Land Pride
On the hr35 box scrapers it mentions a hydraulic back gate or blade. Not quite understanding what they mean or the purpose of it.
HINGED REAR BACKFILL BLADE. FIXED OR FLOATING | Rear backfill blade can be in float or fixed position. For packed down grade, level grade or rough grade |
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HYDRAULIC SHANK TUBE | Hydraulic shank tube makes for efficient use of time. |
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Not here it ain't. In the flat lands many places where by rule ditching is required such as along all county roads, the ditches just fill up and cover the roadways. Two of our farms are in the hills and a new neighbor built his nice new house along with driveway and ditches on both sides. Before the house was finished his washouts were 5-5' deep an he's spent a fortune fixing it, hauling gravel an three years later, he still has to take a back hoe down to repair his plugged culvert and county road that inevitable washes out due to the now redirected water flow.
It was settled by immigrants with many farms being Century Farms and people do what works best which in many case do not include ditches in driveways and field roads.
I think you will find that there is no magic recipe for the blade placement on a Land Plane for road work. There have been lots and lots of various designs on here over the years and they all seem to work well. While adjustable blades may ( or may not ) be a benefit they add much complexity to the build so it is a trade off that is hard to make w/o experience. The most important design factor by far is weight. If you have enough weight you can set the aggressiveness of the blades with your top link adjustment.
Go back and look at all my pictures. That work was all done with a fixed blades, not angled, and 3/4" below the skids. It would be wrong for me to say that that is the best design but as you can see it works might fine. I have seen photos of others work with different blade configurations that work mighty fine also. Look at some of Steve's (jenkinsph) work for instance, his blades are flush with the skids. I think you learn to work with what ever you have. Just my two cents.
gg
Only design I've never saw is the blades angled in opposing directions? Anyone have opinions of doing that?
I keep planning my own LPGS build & thinking about that too. Every post I find about it indicates the angle of the blades really has little to no affect on lateral movement of material. You want the blades angled to maintain ground contact when hitting washboard, but the precise angle doesn't matter as long as there is some.
Good advice.
I'd follow up a back blade on wheels. You should be able to tilt and angle it. Scarifier of some type is also a requirement.
The grading equipment should have the ability to make and move a windrow back and forth across the road. In this process materials are properly mixed and a continuous road grade with crown can be achieved. Any implement that can come close to duplicating the actions of a proper motor grader is desirable.