D-15 and Box Scraper

I have a 1963 D-15 gas. I am thinking that I need a box scraper and am wondering about the compatibility of a local one here for sale and my tractor. I have a back blade now, but it just doesn't seem to 'cut it'. I have even added an extra 200lbs to it. After a heavy rain, it is still not heavy enough to get below the wash-boarding on our community, 1 mile long dirt road. I think that the shanks on a box blade will be more aggressive to dig down, and because of the box blade design, it may be easier to add additional weight to it if I wanted to. There is one here locally for sale. It is a Land Pride BB1266. It is 66" and weighs 375lbs. It is rated for a tractor 17-30 hp, and in other write-ups about it, talks about it being good for compact tractors. The D-15 is approximately 40hp. Should I look for a heavier box blade which may be more durable for the long run and a more effective grader, or am I just over thinking this and the Land Pride will work good enough? I appreciate any input. Also, if I am missing some trick to make the back blade more effective, I am all ears. Thanks! (Hope this is not too silly of a question for this forum!)

Edited by John-Paul - 13 Nov 2021 at 9:47pm

Pull-type? Yes. I think my current back blade weighs 275 - 300 lbs. The box blade I am (half-way) considering does not have wheels in back.

Couple of things to consider when a blade won't cut. What condition is your cutting edge? What angle is your blade set at?
If your cutting edge is flat on the bottom, it won't cut very well. It act like a ski, and want to float over the top rather than cut. That can be compensated for if you have the ability to roll the blade forward.
The angle of the blade also determines the amount of cut. The sharper the angle of blade increases the shear factor. If you have it close to straight, it can have a tendency to chatter and increase the washboard. Think of it like a knife. If you just try to push through it takes a lot of effort to cut. If you slice from one side to the other, it cuts much easier. The same applies to a blade. If you have it set straight, it is trying to push the top off the high spot of the ridge. If you have it set at a sharp angle it should slice the top off.
To get rid of washboards, it often works best to cut the material all off, then lay it back down.
I run the grader at work dealing with washboards on our haul road into the D cell. We average 150 garbage trucks in and out, so it gets pounded pretty hard.

Thank you PaulB - I reversed the angle last night when grading and yes, I noticed a difference - it helped cut. I will keep an eye out for the depth stops. Thanks!

Edited by John-Paul - 16 Nov 2021 at 8:35am

DrAllis - Thanks for the help! If and when I get a box blade, the concensus does seem to be to rip it up with a box blade, then to grade smooth with the back blade.  I think I was looking for a one implement/silver bullet  solution. That's ok though. 

I'd go with a wider box, the 15 will pull a 7' box, 5-1/2' barely covers the tire tracks, and won't in a curve.  You say factory 3 point is it the 3 bolts up model, or a wishbone type adapter? Both can be factory...

open your photo on your computer in PAINT and RESIZE to 800 x 600 pixels and SAVE.. Most cameras take 5000 x 3000 size pictures and that is too big for uploading.

Edited by steve(ill) - 24 Nov 2021 at 11:41am

A 3pt Box scraper can easily do all that you are looking for. The scarifier teeth are almost always able to be raised. 

Thank you!

Good deal. Thank you!