How many "TnT" owners

[Specop_007]

WOW!

I've never heard of doing this, but thats really cool. I dont understand 3 pt enough to know the inner workings. When you install this then what becomes the position on your normal factory pto level? How do you keep from having, for example, your factory 3 pt in the lowest position and the hydraulics in the highest position and end up breaking something?

 

[killdozerd11]

I have a hydraulic top link and (2) hydraulic side links.
They are all independently controlled. I use them all frequently since I do almost every kind of dirt work with my trusty boxblade. I installed everything myself. Below are photos of the side links. Both of them have DPOCV's (double pilot operated check valves) to insure they remain locked in the position I set them, until I move them. The range of motion with two hydraulic side links is tremendous.
Rob-



Here is a video of what the top link and side links can do with the boxblade on...

My father and i set up a ford 3550 like that for grading
It works very good for contour grading sort of like a blade

 

[jnjpream]

WOW!

I've never heard of doing this, but thats really cool. I dont understand 3 pt enough to know the inner workings. When you install this then what becomes the position on your normal factory pto level? How do you keep from having, for example, your factory 3 pt in the lowest position and the hydraulics in the highest position and end up breaking something?

Specop_007, The lower arms just hang from the side links regardless if the side links are hydraulic or not. And the lower arms are free and independent of each other so one can go up while the other goes down due to change in the side link length. Only the lift arms connected to the top of the side links are joined to move in unison. So unless you install side links that are too short or too long, you shouldn't break anything..

 

[mjncad]

Close, but I was going to try this with the matching cylinders in series. My concern about placing them in parallel is that when the valve is in nuetral and the cylinder ports are locked that you still have the oil free to circulate between the cylinders.

I am hoping that with the cylinders in series and all air bled from the system that the cylinders will be locked in place when the cylinder valve is in nuetral position.

Did you ever try this and what did you find?

Heeding the advice of the hydraulics experts, I've abandoned the idea.

 

[jenkinsph]

Well after a little research the easiest way to handle two cylinders is with a rephasing cylinder arrangement. Using double acting cylinders and two way valve the base of each cylinder is plumbed to the valve and the two rod end ports are connected together. Check valves are also used. Setup this way the cylinders can both move equal amounts (assuming the cylinders are the same size bore, stroke and rod size) . With this method there is no need to have a fixed connection between the two cylinders to keep them syncronized. The two cylinders move together not independently, while one is retracting the other is extending at an equal rate. The advantage is that you get a full range of motion to the hitch arms, tilting the implement in both directions the maximum amount.

 

[Dave5264]

Wow, thats very cool, great Video. I can see how useful that would be doing alot of Box Balde work.

Thanks for fueling my "Iron Fever".

 

[Specop_007]

Ok I went out and looked at my 3 pt on the back. Makes perfect sense how it operates. Funny how sometimes we just dont pay any attention to the how in the operation of something.

 

[mjncad]

Well after a little research the easiest way to handle two cylinders is with a rephasing cylinder arrangement. Using double acting cylinders and two way valve the base of each cylinder is plumbed to the valve and the two rod end ports are connected together. Check valves are also used. Setup this way the cylinders can both move equal amounts (assuming the cylinders are the same size bore, stroke and rod size) . With this method there is no need to have a fixed connection between the two cylinders to keep them syncronized. The two cylinders move together not independently, while one is retracting the other is extending at an equal rate. The advantage is that you get a full range of motion to the hitch arms, tilting the implement in both directions the maximum amount.

Can you post a flow diagram sketch? I'm a visual person, and understand graphics in technical issues better than textual descriptions.

Thanks,

 

[jenkinsph]

Here it is,


Rephasing Type Hydraulic Cylinders by Energy Manufacturing Company, Inc.

 

[mjncad]

Thanks Steve, I will study it further to see if this is something that may work for me.

Matt