Hydro help

WHITE TRASH1 · May 17, 2010

hydro joe said:
1 1/2 bore x 1000 psi =880 ponds 1 1/2 x 1500 psi =1995 ponds
2 " bore x1000 psi =1570 ponds 2"x1500 psi =3540 ponds
2 1/2" bore x 1000 psi =2450 ponds 2 1/2 x 1500 psi =5520 ponds

Double ended rams are equal pressure because of equal bore area and single ended rams are not, you have to subtract the rod from the bore to fined the area.

Thats a shitload of ponds.. Any of them stocked I wanna go fishing. :haha:

Those figures have nadda to do with the problem or how to solve it unless you take the time to extrapolate the equation for the pull side which is the issue to begin with.

hydro joe · May 17, 2010

WHITE TRASH said:
Thats a shitload of ponds.. Any of them stocked I wanna go fishing. :haha:

Those figures have nadda to do with the problem or how to solve it unless you take the time to extrapolate the equation for the pull side which is the issue to begin with.

These are problem solving tools and lack of presser could be related.

ain'tstuckjustresting · May 17, 2010

You again?:looser:

WHITE TRASH1 · May 17, 2010

hydro joe said:
These are problem solving tools and lack of presser could be related.

That has already been established... Either the ram has too little surface area on the pull side of the piston from the rod being rather large for the bore size, (such a 2" bore with a 1 1/2" rod.) or the pump just doesn't put out enough pressure. There is a third possible explanation now that I think about it... The ram could just be too damned small/steering valve too large.

How many turns center to lock each way?

Binder · May 17, 2010

fatkid81 said:
its a krc pump with 4g a min in it

This is the same pump I use and it's capable of plenty of pressure so don't screw with the pump itself. If it has the 6" pulley it came with and ~ a 6" crank pulley the pump isn't your problem unless it's defective in which case you still don't want to mess with it.
Like WT asked what size rod on the ram and what size bore? Also the mechanical/ leverage of the setup is important.

fatkid81 · May 18, 2010

I don't think that it is the pump either everything flows good. when you look in the resovour everything is flowing nice and fast. i think i am going to ditch the agurcultural ram. and i think i am going to go with one from psc or trail gear. Thank you for everyones imput i will let you know the results.

WHITE TRASH1 · May 18, 2010

fatkid81 said:
I don't think that it is the pump either everything flows good. when you look in the resovour everything is flowing nice and fast. i think i am going to ditch the agurcultural ram. and i think i am going to go with one from psc or trail gear. Thank you for everyones imput i will let you know the results.

No reason to dump coin on a "custom" ram when a proper ag ram will work perfectly... You still haven't answered the ram size question though, that makes a HUGE difference in whether it'll work or not plain as that.

ain'tstuckjustresting · May 18, 2010

There are threads on pirate and yotatech that give the p/n of the correct cylinder from hydraulic superstore. They were cheaper than any of the shops around here I talked to.

fatkid81 · May 18, 2010

the ram is 2in bore 6in throw im going to get the psi for it tonight

Binder · May 18, 2010

fatkid81 said:
the ram is 2in bore 6in throw im going to get the psi for it tonight

The PSI doesn't really matter. What size is the rod going into the ram?

WHITE TRASH1 · May 18, 2010

Binder said:
The PSI doesn't really matter. What size is the rod going into the ram?

Exactly. I ran a 6x2x with a 1" rod on my yota axle and with the restrictor drilled I couldn't turn right (pull side of ram) with the tires on the ground. Once ~ upped the line pressure I never had another issue. Now with a 7x2x3/4" it is even better.

ain'tstuckjustresting · May 18, 2010

Wow a 2" ram seems pretty small for full hydro. Usually see 1.75 or 2" on hydro assist but on full hydro it seems too small. In order to get the rod strength you need to give up too much area on the piston. On assisted steering a .75 or.80 rad is fine because the box is helping too.

WHITE TRASH1 · May 18, 2010

ain'tstuckjustresting said:
Wow a 2" ram seems pretty small for full hydro. Usually see 1.75 or 2" on hydro assist but on full hydro it seems too small. In order to get the rod strength you need to give up too much area on the piston. On assisted steering a .75 or.80 rad is fine because the box is helping too.

A 2" bore assist ram would lead to slooooow steering response... Most assist rams are 1 1/2" or 1 3/4" maximum with a rod that is 5/" to 3/4". Double ended rams start at 2 1/2" and go up to 3 1/2" with a 1 to 1 1/2" rod.

fatkid81 · May 19, 2010

welll then what size ram do i run or do i run what i have? An do i up the pressure to make it right?

ain'tstuckjustresting · May 19, 2010

Did you ever measure the rod dia.?

WHITE TRASH1 · May 19, 2010

fatkid81 said:
welll then what size ram do i run or do i run what i have? An do i up the pressure to make it right?

Measure the rod diameter first off, second find out exactly what KRC flow control valve you have and see what pressure it puts out with that 4 GPM. That is a **** load of flow my guess is the pressure took a nose dive because of it. :;

fatkid81 · May 19, 2010

will do that tonight when i get off. the flow valve is a E the bigest one they got

Binder · May 19, 2010

It should be 3.7 GPM and 1600 PSI.......If you have a 6" travel ram then mechanical advantage could be the problem as that's a bit short assuming you're even using all of the 6 inches.....
MEASURE-THE-ROD.

WHITE TRASH1 · May 19, 2010

Binder said:
It should be 3.7 GPM and 1600 PSI.......If you have a 6" travel ram then mechanical advantage could be the problem as that's a bit short assuming you're even using all of the 6 inches.....
MEASURE-THE-ROD.

If it's a yota axle it's using all 6 inches. I mounted mine about 2" off the backside of the tierod to leverage another 5/8" of throw out of it and still be within my stop to stop 6 9/16" of total travel as measured at the center of the tie rod.

CHOP SHOP · May 19, 2010

WHITE TRASH said:
If it's a yota axle it's using all 6 inches. I mounted mine about 2" off the backside of the tierod to leverage another 5/8" of throw out of it and still be within my stop to stop 6 9/16" of total travel as measured at the center of the tie rod.

sorry trashy, it dont matter where you mesure that tie rod.

You could weld a 3 foot long tab to it and it still moves the same travel.

arm length is the only thing that will change the leverage length/ratio.

and not all toyotas are the same. A linked up toyota needs way more ram than a toy on 40s and leafs

spacers and rims and tire size all play into ram travel.