Chasing My Tail Grading Gravel

[wfcjr]

Redoing our road & driveway. Total 0.65 mi. Up in the Mtns in VT. Probably 200 of vertical gain over length of drive.

Two stepper. 3 of 1 1/2 clean stone then 3 of 3/4 crusher run/stay mat/ plant mix/ crushed ledge or whatever they call it in your area.

Have always maintained the road with tractor & box blade with very good results. This week, not so much.
Have tried the box blade. Have tried a rear blade with 3 way hydraulics. Both heavy duty. Box blade is a Frontier 8 heavy fury with scarifies. Blade also Frontier 8 HD. Has been miserable. No matter what I try regarding draft control & depth control, am getting terrible wash boarding and scalloping. Beginning to think that these are just the wrong tools for the job.

Have been able to fix things with excavator bucket work, but a long slog.

Are three the wrong tools and should I just blade in the material with a dozer, or am I doing something wrong or is the 1 1/2 stone just tough to work with?

 

[metalbender]

Land plane to the rescue. Check the Tube vids, lots of them, absorb the info and start shopping.

 

[jaxs]

If 3 point draft doesn't work well it can make the blade do what you describe. When my draft got worn I did a simple mod to the box blade rather than investing in a plane. A 3"x4"x 1/4tr" angle iron bolted to ends of box to form "slides". Slides are about two and half long as box ends. Cut a vee in leading and trailing ends of slide,turn ends up to close vees then weld them. I first made slides same leingyh as sides and that didn't really help. Slides have to be long enough to bridge hills and valleys in surface.

 

[TractorGuy]

Try turning your grader blade at an angle and going slow. Pull the gravel to the center some then set the blade back straight and go down the middle.

 

[BrokenTrack]

You are using the wrong tool for the job. I had this same problem when building a road and fixed the problem pretty easily.

As you are finding out, with a three point hitch everything is exaggerated because it is cantilevered off the back of the tractor. When you go into a hole with your rear tire, the rear blade is driven deeper in even further back, so now instead of having one hole, you have two. And when the rear tire goes over a hummock, the three point hitch blade goes even higher, adding a second hump that was not there before.

Tons of passes, using draft-control, and float position helps, but it is just not really good enough.

You need a pull behind grader blade. The longer the better. That is because the exact opposite happens with these devices. Because the blade is located half way between the rear wheel of the tractor, and the rear wheels of the tow-behind grader, when the rear tire of the tractor goes into a hole, the blade moves only HALF the distance. The same thing happens when going over a hummock, the blade only raises half the distance. This means you get a very flat surface.

For even better surfacing, you want a walking beam suspension on the tow behind grader. That is because, with a single axle, if the wheels hit a depression, or hits a rock, it will move the blade. It is only half the distance, but still moves the blade. With a walking beam suspension, the wheels pivot over the obstruction without causing blade movement.

All the reasons I listed you see on a modern grader. They are LONG to get a nice level surface front to back, and they have walking beam rear suspensions.

With my grader blade it takes only two passes to get an absolutely flat road. The first takes out the major dips and lumps, and the second pass irons it out perfectly flat. Fortunately they are quick and cheap to build homemade, and they are an absolute dream for plowing slow on long drives. Kick the tractor in 6 gear and GO! Getting double duty out of them makes them a worthwhile investment.

 

[redman135]

Hello wfcjr, if your box blade and 3 way blade don't have a tail wheel(swiviling wheel behind the blade) then washboard is all you will get. If you get a tail wheel fitted make sure you can flip the wheel up to allow the blade to be reversed.

 

[kthompson]

as Jaxs said draft control not working right or set right will do this.
Tractorguy is very correct on using the rear blade. Rotating the blade allows it to be on more than one ridge or over more than one washboard and also cuts better. Having it straight for me is for very light spreading.
Brokentrack, just sold a 10 foot pull box blade, only box blade I could level with. Works soooo much better.
redman 135, inserting design. I have never seen one like that, but sure it could be handy.

wfcjr, it may not be that hard to install wheels on your current blades and moving the blade further from the tractor. Two wheels with one being adjustable to give it tilt.

 

[Thomas]

Also agree with TractorGuy than turn blade 180 degrees to put smooth finishing touch.

 

[TractorGuy]

We can't all afford an expensive grader.

I got the washboard out of our road by making a bunch of diagonal pulls with a landscape rake then pulling straight lines. In hindsight I should have tried my own advice and pitched the rake at an angle which should produce the same result.

After getting the washboard out and packing with traffic ours has remained smooth.

Another option we have is hiring the county to grade. They are slow to respond but they will grade private roads with a REAL road grader for just under a hundred per hour. You could try calling your county to see if they will grade it.

 

[npalen]

"Filling in the washboard" and "getting out the washboard" are two different things but I agree that angling any attachment will help accomplish either one. Filling in the washboard with loose material will only last a short time where breaking the washboard with some type of ripper teeth will last longer.
For those without a nice grader as seen above, a boxblade with gauge wheels on the back will do an amazing job of leveling especially when combined with hydraulic top link. Hydraulic gauge wheels work well also in lieu of hydraulic top link.
box blade with gauge wheels images - Google Search

I've not seen this one previously. Interesting.
Easy Grade Depth Gauge Attachment Kit