Dimensions needed for Mid Mount Grader Blade Bracket

[Chrishar 1,023]

Looks good and great work I just hope mine  turns out that good  

[BradKahler 347]

I had to pause working on the grader blade due to the sale of a motorhome.  I had a lot of prep to deal with the sale.  Anyway I'm now back working the blade.  The pivot shaft is now tack welded to the sector plate which enabled me to mount the assembly on the tractor.  Before I go any further, does the angle of the blade look correct?  It's sitting on the ground on the floor.  There isn't a whole lot I can do if it isn't right other than drill new holes in the blade.  

 

On the overall length of the blade, this one is 48" and it seems that the original would  have been 42".  I think I've seen 50" listed somewhere but I could be wrong on that.  Is 48" going to be to much of a blade for the B80 or B100?

 

Thanks!

 

Brad

 

[Handy Don 16,846]

Nice work there!

 

That blade angle at the bottom edge will do its best at mild scraping plus spreading/leveling and even with 48” an 8 or 10 it will manage fine. It will not be much use on unbroken soil/gouging which is just as well ‘cause for that you’d need some extra oomph anyway! (And remember, pressing down too much on the blade with your feet helps the blade but lessens the weight on the wheels and can cause wheel spin!)

 

Another good idea is to avoid heavy uneven loading while it is in use. Excessive pull on one end will try to torque the mid-hitch/frame. 

 

The longer WH blades are mounted to the rear axle, similar to a front blade. They can be more aggressive since they tend to dig in when under load where the mid-mount blades tend to lift when under load.

[BradKahler 347]

3 hours ago, Handy Don said:

Nice work there!

 

That blade angle at the bottom edge will do its best at mild scraping plus spreading/leveling and even with 48” an 8 or 10 it will manage fine. It will not be much use on unbroken soil/gouging which is just as well ‘cause for that you’d need some extra oomph anyway! (And remember, pressing down too much on the blade with your feet helps the blade but lessens the weight on the wheels and can cause wheel spin!)

 

Another good idea is to avoid heavy uneven loading while it is in use. Excessive pull on one end will try to torque the mid-hitch/frame. 

 

The longer WH blades are mounted to the rear axle, similar to a front blade. They can be more aggressive since they tend to dig in when under load where the mid-mount blades tend to lift when under load.

 

Thanks for the info.  The main reason I wanted a grader blade is to deal with the gravel on my 1500' driveway.  It tends to mount up on the outside edges and what I'm hoping to do is set the blade at an angle and slowly pull the gravel back onto the driveway with the blade.  The dozer blade doesn't work well for that application so I'm h oping this solves my gravel spreading problem.  I suppose this could cause the torquing of the blade you mentioned, but I hoping that since it is loose gravel it won't be a big issue.  

 

[Handy Don 16,846]

3 hours ago, BradKahler said:

I suppose this could cause the torquing of the blade you mentioned, but I hoping that since it is loose gravel it won't be a big issue.  

It is, but if you take small bites, it should be fine. (More seat time, too!) 😉

[CCW 1,509]

A very impressive project.  Enjoyed reading and double your thank you to @ebinmaine.  He provide me with some much need measurements when I did an engine swap.

Edited May 9 by CCW

[ebinmaine 79,410]

Glad to help! 

[C100guy94 108]

On 4/24/2026 at 6:46 PM, sqrlgtr said:

@BradKahler

WHOA WHOA, WHOA, I see a big problem here, you should be making two and sell me one 

 

I'm with brad. Should be making them in general haha how bout it. 

Great build 

[BradKahler 347]

Ok, I've got an update or two on my progress with the grader blade fabrication.  Other than the lifting tab and final welding the fabrication and assembly is done.  The blade pivot mechanism works nicely although I might revise the handle slightly to make it easier to manipulate from the seat.

 

One thing I noticed is how the blade tilts slightly when it's rotated to side, in other words the tip of the blade is about 1" lower on the leading side and 1" above the ground on the trailing side of the blade. The rotation angle is 22-1/2 degrees.  I've attached some pictures to hopefully show what I'm talking about.

 

The lower outside leading tip of the blade is about 1" below grade when rotated.  

 

 

The tilt is created due to the trailing angle of the pivot pin when the blade is lowered to the ground.  Based on all of the measurements supplied I believe my fabrication pretty much to matches the original design.  Would I be correct in assuming that when the blade is rotated the design calls for the blade to be tilted slightly when rotated?  If not, the only way I can think of that might resolve the tilt would be to mount larger diameter tires.  The blade is 48" wide which is 8" wider than the original designed called for, so maybe this is part of the problem.  Currently I have brand new 22x8.5-12 tires installed but could go to 23x9.5-12 or 23x10.5-12 tires to raise the rear a little.  Or, maybe the bigger question is, am I over thinking this?!  I don't want to do all of the final welding only to find I did something wrong.

 

[ebinmaine 79,410]

My eye-cromiter shows good angles in your pics. 

I'll check with Trina if/when I can get her to slow down long enough.  

 

 

 

[ebinmaine 79,410]

33 minutes ago, BradKahler said:

blade tilts slightly when it's rotated to side

 

I just went out to look at the  @Sparky tractor that currently has the grader mounted. 

 

When angled,  the forward edge is at least an inch lower. Maybe more.  

 

Yours is fine.  

 

[BradKahler 347]

15 minutes ago, ebinmaine said:

My eye-cromiter shows good angles in your pics. 

I'll check with Trina if/when I can get her to slow down long enough.  

 

 

That would be great!  

[BradKahler 347]

1 minute ago, ebinmaine said:

 

I just went out to look at the  @Sparky tractor that currently has the grader mounted. 

 

When angled,  the forward edge is at least an inch lower. Maybe more.  

 

Yours is fine.  

 

 

Thank you Thank you Thank you!!!  

 

I feel a lot better knowing that it's at least close to what the original design is.  Now to finish up the lifting tab and link.  

 

Thanks again!

 

Brad

[WHX?? 57,211]

On 4/24/2026 at 5:46 PM, sqrlgtr said:

and sell me one

You missed out Squirrels ... there was a guy at the BS that had just a pile of them. He was the guy from Canada I believe. I asked him the prices and he wasn't exactly giving them away. About average prices we see tho and he was doing mods to make them more user friendly.  

Gotta applaud you Brad for making your own. @Achto makes a lot of his own stuff just for the satisfaction. 

Only thing i can suggest is a different way to do the lock lever. A real PIA to work when it accumulates gravel dust & dirt and for us old farts to bend over for it. 

[sqrlgtr 3,106]

2 hours ago, WHX?? said:

You missed out Squirrels ...

story of my life. Wished I could have made it but been a rough year or so. 

[BradKahler 347]

3 hours ago, WHX?? said:

You missed out Squirrels ... there was a guy at the BS that had just a pile of them. He was the guy from Canada I believe. I asked him the prices and he wasn't exactly giving them away. About average prices we see tho and he was doing mods to make them more user friendly.  

Gotta applaud you Brad for making your own. @Achto makes a lot of his own stuff just for the satisfaction. 

Only thing i can suggest is a different way to do the lock lever. A real PIA to work when it accumulates gravel dust & dirt and for us old farts to bend over for it. 

 

 

Thank you the kind words. I like making things and this one has been a unique challenge due to all of the angles and curves involved.

 

I do plan on looking at the locking mechanism once I get everything finished and have a chance to use it.  I've already realized trying to rotate it isn't the easiest.

[BradKahler 347]

As mentioned previously the last step is to get the lift mechanism to connected to the grader frame.  I've got all of the specs for the 5678 lift arm so I plan on fabricating it this week.  That leaves me with just how it connects to the tractor lift mechanism.  

 

I found the following diagram which helps but at the same time leaves me a little confused.  It shows the grader lift link connecting to the location circled in the diagram.  Unfortunately, that location has a chain link connection to item #14 in the diagram.  The chain link is using the same hole as the grader lift link is supposed to use.  If I remove the chain link then arm #14 falls the ground.  I know that can't be what is intended so I need help figuring out how to restrain arm #14 so I can connect the grader lift link.  Any help would be appreciated

 

 

 

 

[ebinmaine 79,410]

2 minutes ago, BradKahler said:

following diagram which helps but at the same time leaves me a little confused.  It shows the grader lift link connecting to the location circled in the diagram.  Unfortunately, that location has a chain link connection to item #14 in the diagram.  The chain link is using the same hole as the grader lift link is supposed to use.  If I remove the chain link then arm #14 falls the ground.  I know that can't be what is intended so I need help figuring out how to restrain arm #14 so I can connect the grader lift link.  Any help would be appreciated

 

Hole choice is optional. Trina uses a solid lift link so she has downpressure.  

 

Will this tractor be used for a mowing deck? 

Yes... ziptie #14 up outta the way while using the grader.  

No... remove #14. 

[BradKahler 347]

1 minute ago, ebinmaine said:

 

Hole choice is optional. Trina uses a solid lift link so she has down pressure.  

 

Down pressure is what I want.

 

1 minute ago, ebinmaine said:

Will this tractor be used for a mowing deck? 

Yes... ziptie #14 up outta the way while using the grader.  

No... remove #14. 

 

At the moment there are no plans to use a mower deck.  The B80 handles the mowing chore just fine.  

 

Zip tie it is, I've got some monster zip ties to use.

 

Thanks!