Author Topic: Budget Full Hydro  (Read 3013 times)

M4wdFab

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Re: Budget Full Hydro
« Reply #15 on: November 27, 2014, 11:17:37 PM »
power drives calls it a "bump" fitting

goes from oring thing on the box to JIC6



something like this

not sure what size you need on box end.  jic6 is what everyone runs with 3/8 hose

http://www.pscmotorsports.com/16mm-x-6-jic-adapter.html

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Re: Budget Full Hydro
« Reply #16 on: May 15, 2015, 10:10:57 PM »
http://www.pirate4x4.com/forum/general-4x4-discussion/708701-best-power-steering-pump-modifications-pressure-flow.html


I run a stock pump / SE  2.5X10" cylinder / char lynn steering valve on my buggy.

I updated my steering to a DE cylinder this off season.  All other components are the same.

The end result was a minimal change.

Slight gain in steering quickness and power.

Better cylinder protection due to packaging requirements.





As for the SE cylinder.

Pros:   off the self parts / packaging / price

Cons: uneven cycle time lock to lock   (i never noticed this in mine, even at speed)
          uneven power lock to lock  (again, i never noticed this)  if you can feel the difference then your system was designed wrong from the start.

Conclusion:  I think a well designed SE system is great for 95% of what we ask it to do.  I would have no hesitation going back to a SE cylinder.








Harrison

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Re: Budget Full Hydro
« Reply #17 on: May 17, 2015, 09:27:04 PM »
Thanks Gif. Funny timing, bent my tie rod and assist ram this weekend. Was able to bend back and free things up and keep wheeling. Ordering parts to build SE setup this week.

Harrison

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Re: Budget Full Hydro
« Reply #18 on: May 18, 2015, 01:57:10 PM »
Cons: uneven cycle time lock to lock   (i never noticed this in mine, even at speed)
          uneven power lock to lock  (again, i never noticed this)  if you can feel the difference then your system was designed wrong from the start.

What size rod were you running with your 2.5x10 ram? A 2.5x8x1.125 gives me 3 turns one way and 4 the other with a 9.7 cu in steering valve. For comparison, what did yours end up being?

Going to 2.5x8x1 makes it 3.4 and 4 turns... but that size isn't an option on Surplus Center. 2.5x10x1 is an option though... is that why you went with a 10" ram and put a limiting collar on it? My 8" assist ram is a perfect match for my steering range, but I have it limited a little to keep the tires out of the links.

M4wdFab

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Re: Budget Full Hydro
« Reply #19 on: May 18, 2015, 02:26:49 PM »
wait your steering is pushing 7 turns lock to lock?  huh?

mr.mindless

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Re: Budget Full Hydro
« Reply #20 on: May 18, 2015, 02:41:48 PM »
not 3 from center and 4 from center, but 3 from full extension to full retraction and 4 from full retraction to full extension.

That seems a little slow to me but probably fine for a crawler.

I'd like to be more like 2.25-2.5.  even 2 would probably suit me as long as there was enough power behind it.
Quote from: etk300ex
oh lord!

M4wdFab

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Re: Budget Full Hydro
« Reply #21 on: May 18, 2015, 02:49:09 PM »
i guess i never thought enough to care about understanding that.  makes sense now.


carry on!

Harrison

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Re: Budget Full Hydro
« Reply #22 on: May 18, 2015, 04:36:50 PM »
I was worried more if the 3 to 4 turn ratio seemed reasonable. Reducing the rod size makes them closer but not many options for big cylinder with a small rod.

Stock XJ is like 3.5 lock to lock so I figured that was reasonable. A bigger ram later on would get me under 3 pretty easily.

M4wdFab

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Re: Budget Full Hydro
« Reply #23 on: May 18, 2015, 04:39:29 PM »
*smaller ram   ;D

Harrison

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Re: Budget Full Hydro
« Reply #24 on: May 18, 2015, 05:35:28 PM »
Dammit! Yes, smaller.

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Re: Budget Full Hydro
« Reply #25 on: May 27, 2015, 03:23:07 PM »
I was worried more if the 3 to 4 turn ratio seemed reasonable. Reducing the rod size makes them closer but not many options for big cylinder with a small rod.

Stock XJ is like 3.5 lock to lock so I figured that was reasonable. A bigger ram later on would get me under 3 pretty easily.

Most cars are 3-4 lock to lock.

This is what i modeled mine around.  In a panic mode i wanted the buggy to react as expected.  99% of the time im driving a street vehicle.

Right now im at 3 lock to lock

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Re: Budget Full Hydro
« Reply #26 on: May 27, 2015, 03:27:45 PM »
Cons: uneven cycle time lock to lock   (i never noticed this in mine, even at speed)
          uneven power lock to lock  (again, i never noticed this)  if you can feel the difference then your system was designed wrong from the start.

What size rod were you running with your 2.5x10 ram? A 2.5x8x1.125 gives me 3 turns one way and 4 the other with a 9.7 cu in steering valve. For comparison, what did yours end up being?

Going to 2.5x8x1 makes it 3.4 and 4 turns... but that size isn't an option on Surplus Center. 2.5x10x1 is an option though... is that why you went with a 10" ram and put a limiting collar on it? My 8" assist ram is a perfect match for my steering range, but I have it limited a little to keep the tires out of the links.

I needed 9" of total stroke.   I cut the stops off the axle to get a little more steer...   

Harrison

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Re: Budget Full Hydro
« Reply #27 on: May 27, 2015, 04:43:30 PM »

Right now im at 3 lock to lock

On paper, what was the difference in turns L and R with your SE setup?

I already pulled the trigger on the 9.7 cu in steering valve. 3 turns lock to lock one way, 4 the other.

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Re: Budget Full Hydro
« Reply #28 on: May 27, 2015, 11:16:54 PM »

Right now im at 3 lock to lock

On paper, what was the difference in turns L and R with your SE setup?

I already pulled the trigger on the 9.7 cu in steering valve. 3 turns lock to lock one way, 4 the other.


same,  3  and 4

M4wdFab

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Re: Budget Full Hydro
« Reply #29 on: May 27, 2015, 11:25:13 PM »
1.7   ;D