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This is why I have been preaching field serviceable fittings for the last 3 years.
I love my stock Chevy van pump. And if I do blow one, they are a stock item at every mom and pop and chain parts store in America. BTW I carry two power steering pump pullers with me in my big box of wheeling junk, just in case... if any of you guys ever need to borrow one when we are on the trail together
I burned out two pumps on my hydro assist before I smarted up and added a cooler. Just used a regular tranny cooler and plumbed it into the return line.
I'm using an 8" ram with a 4" bore. Its a bit slow, either need a bigger flow pump or smaller ram. Thinking maybe a smaller ram since I've got tons of power as it is. My setup naturally bottoms out before the knuckles do so no problem there.
Since its still september for a few more days I'll post up my current steering problem..
I'm in the process of switching from my single ended ram to a balanced cylinder.
The problem I have is that my orbital puts out 10.2 cu/in/rev, with the common size of balanced cylinders being 2.5x8x1.5(shaft) i'll only have 2.5 turns lock to lock.
does anyone know of a cylinder with a smaller shaft? 1.25 would be perfect as i'd have right at 3 turns
Is there any way you can rework your steering to allow for a 10" stroke lock to lock? 2.5x1.5x10 would put you right at 3 turns. I don't know how long that would require your hi-steer arms to be, so that might not be doable. Definitely more complicated than just getting the right-size ram to begin with, though.
Might want to post on Pirate and see if anyone is willing to trade for a setup around 8 cu/in/rev.
Last edited by SirFuego; 09-27-2010 at 12:08 PM.
Long hi-steer arms you have to start worrying about fitting them inside the wheel. Leaning the hi-steer arm inward toward the center of the truck to clear the rim/tire would throw your ackerman outta whack too...hmm
I hate to say this but I think you need to swap orbitals... Think anybody would be willing to trade you straight up for a lower displacement orbital? Yours would be perfect in one of those neon color tube hill climber buggies that never go fast. I think 2.5 turns is a little too quick to be safe on the gravel and the street with either the PSC or surplus center cylinders, unless you wanted to swap on a mongo schoolbus steering wheel or something. And it would suck to buy a fluid hungry cylinder and find out your pump doesn't have enough flow, just because of an oddball orbital...
you could always just try the 2.5 turns and if you end up not liking it, you can be on the lookout to trade your orbital. not having run 2.5 turns I can only guess as to what it would feel like...
Last edited by ATL ZJ; 09-27-2010 at 01:09 PM.
PSC has a 3" DE ram with 1.5" Rods. The 10.2 Orbital would be 3.25 turns Lock to lock with that.
What was your old setup? 2.5" SE cylinder?
thanks for the thoughts fellers..
yes, the old setup was 2.5 single ended, 1.125 shaft so the larger displacement was perfect, i had 3.5 turns lock to lock..
The larger cylinder from psc is a good option i think, it costs a good bit more but would still be cheaper than buying another orbital..
i have an idea on someone who would benefit by trading orbitals.. just gotta see if i can talk him into it...
I may just give it a try with 2.5 turns..
any thoughts on using flow control to slow it down a little?
it'd be nice if someone made a cylinder with a smaller effin shaft!
i also thought about buying one of the cylinders and having the shaft ground down ( i know a guy) but then i don't know how i'd go about a seal then..
I have no idea what his current pump is, but I'd imagine you're right. Just throwing it out there since one of my buddies runs the PSC 3" Rockwell ram. Of course, he's feeding it with a PSC pump and turns 54's, but that's another story all together...
What about a larger PS pulley instead of a flow control valve to decrease the pump flow, if in fact, it turns too fast with the 10.2 orbital and 2.5" DE?
some people do prefer to open their beers with a sledgehammer...
edit: nevermind you said Larger. I misread
trey, there actually is a machine shop in TN that makes custom cylinders. They are the same one that makes the ones POS sells/sold. I have no idea if they would do a one-off, but I could try to dig up their info. Seems like that would be better than modifying a shaft, trying to chase down pistons and seals and get the shaft recoated
Last edited by ATL ZJ; 09-27-2010 at 02:07 PM.
cam if you get a minute see if you can find that info.. it can't hurt to ask.
im working on the orbital trade as we speak.. that would be the best option.
so i guess the answer to my origonal question is -no, no one makes a balanced cylinder with a smaller shaft.?
You're right on 1 and 2. My preference would be to have the DL and TB close to the same length (scenario 2). Either one works but it probably has more to do with what you have room for and what works best on a particular rig. Think about this, in either situation you will minimize bump steer on the street and only in high travel situations will you actually get any bumpsteer at all. Unless you plan on desert racing style wheeling you would probably never notice the minimal bump steer from scenario 1.
Like almost everything, it's a compromise.
Thanks for answering that for me! Option 2 seems like alot less work but I didnt want to fook my drivability by taking the easy way out. I have been doing alot of reading on the subject but it seemed like a 50/50 split on the same plane vs different arc debate.
I'm going to be taking my steering off shortly. I'll try to remember to measure the eye to eye lengths of my drag link and track bar. I know they were almost completely parallel and I had no bump steer, but I don't think they are the same length, but I could be very wrong about that because the mounting points are slightly offset.
I used to live by a set of rail road tracks that everyone slowed down to like 5 mph to go over. The night I drove home my Jeep after the steering was setup, I drove over those tracks at about 30 with zero bump steer.
Cool. Were the tb and dl in the same plane or just paralell.
Cant reacall if your rig is torn down or not yet.
ed: nevermind. Forgot you posted that pic on pg 1.
Last edited by Jeeptech01; 10-07-2010 at 08:49 AM.
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