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Old 08-27-2019, 02:07 PM
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Default Crader build

For a long time, I have been contemplating the Duragrader style driveway maintenance attachments http://www.domorequipment.com/ez-series-grader/ . It is supposed to be the absolute answer for low horsepower driveway maintenance.

From watching assorted Youtube videos and looking at units of various and assorted units of almost every color imaginable.

I reviewed all my material inventory and discovered that with a little creativity, I had at least half the material needed. I searched for angle iron bars behind the cutting edges for ages until I finally gave up and sourced new stock. I also bought the cutting edges. I wanted bolt on reversible cutting edges. I found out that the cutting edges for a JD 450 dozer are exactly what I wanted - bolt on, reversible, and widely available both from both OEM and aftermarket vendors.

The odd shape of the side plates is because of the material in inventory. I had a 4 x 4 sheet of 1/4" checker plate that had had a 26" x 26" square cut out (for the operator platform of the loader in my avatar infact). The frame was out of square tubing salvaged from a rig building yard.
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Design to 0.001", measure to 1/32", cut with an axe, grind to fit..

Last edited by camdigger; 08-27-2019 at 02:55 PM.
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Old 08-27-2019, 02:26 PM
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I have learned a bitter lesson over the years. Once you put enough material together that you can't handle it by hand, don't weld it to anything else until you come up with a plan how to move it around.... Hence the side plates and the frame were put together, then the frame hooked up to the tractor, and the side plates welded to the main frame.

The cutting edges are bolted to a sub assembly which is then mounted to the rest of the unit via slots which allow adjustment for wear of the cutting edges. The 2" material around the side plates is for stiffness and the lower one also for depth control to prevent gouging.

After some use, I may double up the bottom runner with another layer, or maybe even a hard surfaced additional layer.
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Design to 0.001", measure to 1/32", cut with an axe, grind to fit..

Last edited by camdigger; 08-27-2019 at 04:16 PM.
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Old 08-27-2019, 02:28 PM
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I must stay, I am estatic. the doodad worked flawlessly first try with no fudging and no tweaking. Made short work of the wonky crown on my driveway.
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Design to 0.001", measure to 1/32", cut with an axe, grind to fit..
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Old 08-27-2019, 03:02 PM
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That looks mighty good from here, Cam. I am partial to the color choice too.
What material is that driveway?
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Old 08-27-2019, 03:10 PM
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Very nice job, it sure looks like it does a nice job!!
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Old 08-27-2019, 03:34 PM
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Quote:
Originally Posted by cutter View Post
That looks mighty good from here, Cam. I am partial to the color choice too.
What material is that driveway?
The driveway is what locals call road gravel, or 3/4" crush over native clay. Others call it 3/4 -. It is a crushed product ( sharp edges ) that includes everything that will pass a 3/4" screen. It is a well graded, poorly size sorted, material that packs rock hard over our mostly clay substrata. Sadly, it is recovered material, and contains more clay than is typical. Even so, does the job for a very economical outlay.

In reality, the road gravel turns out to be 95% mashed up granite with a smattering of other crushed rock. The granite comes from glacial deposits scattered around the countryside.
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Design to 0.001", measure to 1/32", cut with an axe, grind to fit..
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Old 08-27-2019, 03:36 PM
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Looks like the one I plan to build. Ought to make the drive job short work.
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Old 08-27-2019, 03:45 PM
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Originally Posted by milomilo View Post
Looks like the one I plan to build. Ought to make the drive job short work.
Yep, I stewed over this for over 2 years, hoarded and gathered materials for another year, worked on it for 2 weeks, and got stunning results on my 75 yard driveway in a 20 minute test

On the upside, I just happen to know some folk who have an aggregate mile of pothole ridden gravel driveways.. All of whom are spectacularly gifted cooks..
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Old 08-27-2019, 04:09 PM
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I bought an 8 footer cheap a long time ago. They work great when the road and material is dry....not the best when it's wet. Keep an eye on the runner skids...they wear out quickly. I welded hard surfaces on them to make them last longer.
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