Nice work... you weld like a pro! what kind of welder are you using? I have a hobby mig but cannot get a bead like that to save my life! And NICE WORK on the inside welds
The protection gas I use is ATAL. This is a mix of 82% Argon and 18% CO2.
I first want to say what a great job you are doing and your Fab/Welding skills are some of the best I've seen. I been in the Fab/Machine shop business for 30+ years.
I assume you are using 2 way cylinders. If so, then you don't need a lot of reservoir for you oil. The cylinders are always full, it just moves from one side of the piston to the other. Once you bleed all the air out of them, the added oil will help with over heating the oil when you are really working the loader.
Yes, the cylinders are 2 way cylinders. But I do need both towers as oil reservoir.
I will try to explain.
The oil pump can only suck the oil down to just a little above centre of the oil strainer before it will suck air in.
From the centre of the strainer to the top level of the oil, which is just below the filling pipe, there is 320 mm. The inside of the tower is 70 mm in square.
Oil volume of one tower will be: 0,7x0,7x3,2 = 1,57 litres (0,415 gallon).
I have four cylinders with an ID of 50 mm and a stroke of 400 mm. The piston rod is 30 mm OD.
Now we assume that the system is full of oil and all air is bleed out. All the cylinders are in.
Ok, then we expands all four cylinders with the full stroke:
Oil to the cylinders will be: 3,14x0,25x0,25x4x4 = 3,14 litres (0,83 gallon)
The oil I get back from the other side of the piston in the cylinders is 3,14 litre minus the volume of the piston rod.
That will be 3,14 – (3,14x0,15x0,15x4x4) = 2,01 litre (0,531 gallon)
I have to refill 3,14 – 2,01 = 1,13 litre (0,299 gallon)
So when the cylinders are fully expanded there will be 1,57 – 1,13 = 0,44 litre (0,116 gallon) left in the tower.
0,44 litres in the tower is 90 mm (3½”) above the suction centre and that is when the tractor is totally horizontal and not tilting.
The oil is standing all the way up to the filling pipe and when I drive the tractor with the oil level so high there is a big chance that oil will come out of the air bleeding hole and therefore I use both towers as oil reservoir.
When I use both towers I can lower the top level of the oil.
I hope my explanation is OK.
Edited by Per, January 12, 2013 - 07:05 PM.