CAT 14M Motor Grader

[rc_farmer]

That is really an ingenious idea on building the blade. you will have some serious cutting power. I don't think you will have a weight issue. I had to add ballast to mine my wheels.

[9W Monighan]

That's more than I can report at this time with any progress.
Your wear plates look very nice. One thing,you will need to use countersunk screws on the wear plates.

[mack kid]

Just amazed at this build sets the bar for quaility.

[Hemi1966]

I made the blade tilt cylinder brackets, and the side shift mechanics.

[SmallHaul]

The whole blade assembly looks great, very nice work.

[sneaky-pete]

That is bad*ss....youve got skills!

[cbazq271]

one of the best hand made RC's I hace ever seen.

[JensR]

That looks great!
Is the outward connection of the side shift is not outwards enough, it looks like you have only relatively little movement to the right?
In the original, the brackets sit much closer to the end of the blade.
Is this a restriction because of the hydraulic cylinder?

[Hemi1966]

Originally Posted by JensR

That looks great!
Is the outward connection of the side shift is not outwards enough, it looks like you have only relatively little movement to the right?
In the original, the brackets sit much closer to the end of the blade.
Is this a restriction because of the hydraulic cylinder?

The movement is actually made by electric motor and spindle, and that restrict the travel. The short travel (35mm both ways) annoys me too, so I´m going to change the spindle to hydraulic cylinder.

[JensR]

Ah yes, that makes sense. Hydraulic will be beneficial there.
Are you going for a rotary feedthrough for the blade tilt and shift?

I use a spindle drive - it works very nicely and I get a lot of travel, but dirt is an issue. I am thinking about converting to a pull-pull winch - not sure, it's just a thought at this time. But for the high quality of your model, I feel that hydraulics is the way to go.

Set with pictures

BTW, could you tell me what diameter tube you used for your blade?

Cheers
Jens

[Hemi1966]

Originally Posted by JensR

could you tell me what diameter tube you used for your blade?

Cheers
Jens

The tubes is diameter 66 mm.

[Ken Orme]

Hemi1966;

Your machining and photos are excellant. Keep up the good work.

Ken

[sparkycuda]

No words to describe the workmanship, fit and finish. Awesome seems inadequate. You made the side-shift cylinder? Would you be willing to share you construction methods, especially what seals/o-rings and how they are arranged on the piston and head.

Thanks!

Ken

[Hemi1966]

Originally Posted by sparkycuda

Would you be willing to share you construction methods, especially what seals/o-rings and how they are arranged on the piston and head.

Thanks!

Ken

All seals are o-rings. Both piston and rod are sealed with two o-rings. The cylinder tube has threads in both ends, and the end caps are sealed with 3M Hydraulic Sealant HP42.
The most hardest task is to make the o-ring grooves to the cap that seals the piston rod.
My side shift cylinder has 4 mm piston rod, so you need very small tool to cut the o-ring grooves with lathe.
And of course the grooves MUST be in correct size, or they won´t hold the pressure
The picture you see here is not the side shift cylinder, it´s one I made earlier, but it´s made the same way so you get the picture.

[mazdaparts]

That is much better on the side shift. How are you going to keep the hoses from twisting when you rotate the blade?

[JensR]

So smooth and quick - wow!

[Lil Giants]

What's the tool look like that you cut the inner grooves with in the rod end cap?

[Hemi1966]

Originally Posted by Lil Giants

What's the tool look like that you cut the inner grooves with in the rod end cap?

I´m using these: http://www.cut-tools.de/mini-tool-tu...ng-p-1842.html

[sparkycuda]

Ari, thanks for the technical info about the cylinders. Those inside-cutting tools are really small, but just right for what you are making. Is the rod and barrel material stainless steel? Piston? Maybe I'll try making some cylinders now.

Thanks again.

Ken

[Hemi1966]

Originally Posted by sparkycuda

Is the rod and barrel material stainless steel? Piston?

Thanks again.

Ken

The rod is stainless steel, but the barrel and piston are made of aluminium.

Past few days I´ve been making the centershift cylinder, and the blade lift cylinder holders.
Next I start to make the blade lift cylinders