Rear blade technique and whether hydraulics are really needed

   / Rear blade technique and whether hydraulics are really needed #1  

Bullwinkle123

Platinum Member
Joined
Mar 30, 2019
Messages
656
Location
Southern VT
Tractor
Kubota MX5400HST, Z724XKW-3-54
So I have the Landpride RB3784 6-way blade, 7 feet wide, and no rear hydraulics. When researching my buy, naturally the popular concensus on TBN was that you want the top-n-tilt, the more hydraulics for road maintenance tools the better, basically. However I'd reached my limit, and had to rule it out.

There are four things I want to do with my rear blade to manage my long dirt/gravel driveway:

  1. Maintain drainage ditches
  2. Maintain crown of the gravel surface
  3. Scoop material (gravel) toward the center of the driveway from edges
  4. Generally smooth the surface (remove dips)

My ditch work is ugly, but mostly working. Getting the blade to dig in and move (though not necessarily _remove_) material to the side of the driveway is not a problem, though sometimes changing the position of the heavy blade arm is challenging (since it weighs more than I do).

My problem is more about the blade digging in when I do NOT want it dig. For example, I may have the blade positioned to do a reasonable scoop-from-side activity, but it's completely sensitive to dips/non-level driveway surface. So the blade position that worked when the tractor was level is now digging up my yard when the tractor is not level. It's like I need some kind of "float" for the blade. (For this reason, 95% of all my leveling has been with my bucket on float - and not the blade).

Same for smoothing the surface. If you have even the slightest dip in the surface, then one pair of wheels in the tractor enters the dip, and the blade is either too far up (front tires dipped), or too far down (rear tires dipped), and now you're just digging _new_ dips.

Then there's scooping material. If you offset the blade by swinging the arm to the side, there is some kind of slope bias in that action even if you haven't angled the blade. In fact, I need to angle the blade in the toward the center of the driveway to correct for it. E.g. I use the swing arm to place the blade to the far right of the tractor, and angle the blade horizontally so that the right edge leads to direct gravel toward the center. Those two actions seem to make the blade angle down vertically, enough that sometimes I must correct, or it will ditch when I want it just to scoop materials centerward.

No doubt the above problems are all at least partly because I'm new at this, I can't stress my noobishness enough. But I am getting practice, and the blade just continues to thwart my every goal for it beyond digging ditches. I know a box blade would be better for smoothing, but I'm not sure it would help with scooping and crowning. And I am having ZERO luck getting a crown, because if I get a proper side-to-side angle on the blade so that the mid of the driveway will be higher than the edge of the driveway, then the blade will be digging up my yard on every dip, unlevel wheel footing and so on.

  • Is it hopeless to do this stuff without hydraulics to fine tune pitch and such while moving?
  • Am I using the wrong tool for the job?
  • Is there a "float" for the 3PH like there is for the bucket that I simply don't know about?

I've also played with the angle of the blade with respect to toplink adjustments and aggressiveness of material, i.e. short toplink to "smooth", long toplink to be more aggressive with the bottom of the blade. Even when it's very short it's still pretty aggressive and doesn't function well for smoothing.

I'm mostly smoothing tailgate dropped gravel right now. The truck invariably drops it deeper than I like, and sometimes wider/narrower than I like. So not only do I need to crown it, but I also need to get it from point where it's too thick to point B where it's too thin, and mostly I drag with the bucket on float to do that, since any attempt to use the bucket to scoop it up and move it would make a far larger mess. (Since the tailgate result isn't too bad, just too think where it's deposited).

Maybe the answer is just more practice and "stepwise refinement", i.e. get the driveway level, _then_ crown, etc, but my best approximations at "level" are also easily felt as bumps when driving across it.

Looking for advice on techniques, tooling, etc. I'm starting to think some kind of blade with wheels on it might have been better. Don't really know.

[Addendum, in general, I also spend way more time raking gravel by hand, and clearing debris from ditches by hand, than I would like. I was hoping the tractor was going to help more in this regard. Where I can ditch with the bucket it's great, but ditching with the rear blade leaves all kinds of stuff I have to shovel out, and I have to use the blade where it's too tight to position the tractor perpindicular to the driveway because of trees]
 
   / Rear blade technique and whether hydraulics are really needed #2  
I have the same blade, and have top and tilt hydraulics as well as hydraulic angle on the blade. While the hydraulics help set angles and tilt without getting on and off the tractor, they don't help me overcome the problems you're describing. I also had those problems before learning a couple things. What works best for me on my gravel drive:
1 - Go slow. As slow as you can for final grading. I use low range and 1st or 2nd gear. That gives me time to feel and see the uneven areas, and react with adjustments as needed to the 3 point hitch (up/down).
2 - To get a nice final grade and remove the "whoopty do's", I angle the blade and go in reverse. That keeps my tractor on the fresh graded area and lets the blade slowly level the irregular areas. Slow on this technique too, almost always in low 1st and barely crawling.
Those two things drastically improved my grading ability and save a lot of time even though I'm using such slow speeds. I do have the wings added to my blade so I can get some initial passes pulling large amounts of gravel from one area to another, and I do that in low gear too so I can stay on top of adjustments much easier.
 
   / Rear blade technique and whether hydraulics are really needed #3  
Rear blades have been used on tractors without hydraulics for decades. Many decades. Just requires more operator logistics.

Practice will improve your technique.

For smoothing Landpride offers a gauge wheel for the blade. This addition would make you look like a professional in regards to working your driveway to a level/smooth surface.

Here's a link to what I'm talking about.

Land Pride RBT3584 Rear Blade Gauge Wheel Manual Assembly Parts and Diagram
 
   / Rear blade technique and whether hydraulics are really needed #4  
Rear blades have been used on tractors without hydraulics for decades. Many decades. Just requires more operator logistics.

Practice will improve your technique.

For smoothing Landpride offers a gauge wheel for the blade. This addition would make you look like a professional in regards to working your driveway to a level/smooth surface.

Here's a link to what I'm talking about.

Land Pride RBT3584 Rear Blade Gauge Wheel Manual Assembly Parts and Diagram

I have been using a rear blade without hydraulics for many years!
Developing the proper technique is all that is really necessary.
If anything, a tail wheel would be nice, but I don't have one.
 
   / Rear blade technique and whether hydraulics are really needed
  • Thread Starter
#5  
I have the same blade, and have top and tilt hydraulics as well as hydraulic angle on the blade. While the hydraulics help set angles and tilt without getting on and off the tractor, they don't help me overcome the problems you're describing. I also had those problems before learning a couple things. What works best for me on my gravel drive:
1 - Go slow. As slow as you can for final grading. I use low range and 1st or 2nd gear. That gives me time to feel and see the uneven areas, and react with adjustments as needed to the 3 point hitch (up/down).
2 - To get a nice final grade and remove the "whoopty do's", I angle the blade and go in reverse. That keeps my tractor on the fresh graded area and lets the blade slowly level the irregular areas. Slow on this technique too, almost always in low 1st and barely crawling.
Those two things drastically improved my grading ability and save a lot of time even though I'm using such slow speeds. I do have the wings added to my blade so I can get some initial passes pulling large amounts of gravel from one area to another, and I do that in low gear too so I can stay on top of adjustments much easier.

Good tips, thanks. I wouldn't have thought about reversing the blade to take advantage of the surface just processed by the blade. Any advice for the blade settings or other techniques you use to achieve a crown? If I use the blade angle (i.e. tip one corner lower with the rear bolt", those are fixed at 7.5 degree increments, which seems too steep for an 8-ish foot driveway. However at, say, 1/2 inch per foot of width, that's only a 4 degree grade, not 7.5, and is probably also part of the reason I'm digging up turf (that was another place I thought hydraulics might offer more granularity).
 
   / Rear blade technique and whether hydraulics are really needed
  • Thread Starter
#6  
Nice to hear from the non-hydraulic crowd, certainly I thought long and hard about whether I was ready to pony up the dough for it, and chose not to.

As noted in my last reply, one of the places I was wondering about is that the angle increments of my blade seem coarser than I want for getting a crown, but that too may just be some technique. Though short of an experiment to run with unequal 3PH lower arm heights, I haven't found joy there yet, and the experiment doesn't look promising enough for me to attempt the nuisance of hooking up an attachment with uneven arms.
 
   / Rear blade technique and whether hydraulics are really needed #7  
Good tips, thanks. I wouldn't have thought about reversing the blade to take advantage of the surface just processed by the blade. Any advice for the blade settings or other techniques you use to achieve a crown? If I use the blade angle (i.e. tip one corner lower with the rear bolt", those are fixed at 7.5 degree increments, which seems too steep for an 8-ish foot driveway. However at, say, 1/2 inch per foot of width, that's only a 4 degree grade, not 7.5, and is probably also part of the reason I'm digging up turf (that was another place I thought hydraulics might offer more granularity).

When I said going in reverse I meant keeping the blade facing forward but driving in reverse. With the blade angled, it eliminates the rises and dips in the surface and moves a little gravel to the center (if angled the correct direction). Since the blade is traveling backwards you use the back side of that blade as a less aggressive option.
For tilt, I use the side link crank on the tractor. Actually I used to use the crank, but now I do it with hydraulics. I don't make that adjustment on the blade itself. With the blade angled toward the center of the drive and the trailing edge slightly raised it does a nice job of creating a crown.
 
   / Rear blade technique and whether hydraulics are really needed #8  
The only difference between basic T&T scrape blade operation and manual is changing the lengths of the top link and a side lift arm links...

The range of settings should be very close...The one big advantage of hydraulic T&T is you learn faster because you can constantly change the settings while in motion and can see exactly what is happening as adjustments are made...using manual top and side links makes one less inclined to change settings so often...
 
   / Rear blade technique and whether hydraulics are really needed #9  
I have a hydraulic top link from fit rite, But no tilt. If you angle the blade you can make it level or tilted as you wish just with the top link cylinder. Not really any need for tilt when grading with this setup. It痴 like 10x easier than an all manual setup with better results, you can adjust almost perfectly to pull material in, crown, dig a trench, or push material out all from the seat while moving.
 
   / Rear blade technique and whether hydraulics are really needed
  • Thread Starter
#10  
For tilt, I use the side link crank on the tractor. Actually I used to use the crank, but now I do it with hydraulics. I don't make that adjustment on the blade itself. With the blade angled toward the center of the drive and the trailing edge slightly raised it does a nice job of creating a crown.

Interesting, haven't tried that, somehow didn't think it would have much effect. I'm getting a picture of what I think you mean though. So (1) go backward, blade in normal forward face, (2) angle one side of blade horizontally to guide material to center, (3) adjust 3ph side link for a bit of angle, (4) go sloooow
 
 

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