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Thread: Hydro assist cylinder

  1. #21
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    The cooler can be one of the generic tranny coolers that you can buy at crappy tire. I have a big B&M 20,000lb tranny cooler from the front of a pickup at the junk yard for my tranny cooler and another for the steering. Nothing special or fancy needed. I got $30 into both of them. Use standard 3/8 tranny cooler hose and your all done cause the return line from the steering box is low pressure.

    http://formula.bambeezer.com/cooler1.jpg
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  2. #22
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    First, let us begin with one of these: Yer welcome.

    Quote Originally Posted by Curt's_97 View Post
    Now, more questions. lol

    1. Same Astro box question.
    No idea. Went for a ride in one once. When all else fails and for the sake of simplicity, you can always tap the caps. I just removed the top and front aluminum caps on the box, welded in some aluminum JIC fittings and put them back on. Presto - left right hydro power without touching the box. That is what I did what I ran assist years ago and it worked just fine. But it can sometimes not be convenient because of the fitting locations.

    Quote Originally Posted by Curt's_97 View Post
    2. What size cooler? There are 2 styles no? like the cone looking one and a rad looking one? I get a smokin deal from a buddy that works at napa so probably go there. Some cheap generic cooler i would assume?
    The cooler should be as big as you can fit and/or afford. Stacked plate (rad style) coolers are more efficient than fin and tube coolers....and more expensive. One with a dedicated fan is even better.

    Quote Originally Posted by Curt's_97 View Post
    3. Stock pump resevoir, will it be big enough.
    Short answer is yes, probably. But the more fluid volume the better in the system. Lower fluid cycle rate = cooler fluid.
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    its my understanding from back when i though about going this way, that the stock res will not be big enough (volume) wise. when the ram is fully extended the res will be low on fluid and depending on you angle on the trail could be starving the pump. guy were using a piece of rad hose the same diameter as the cap to extend it slightly.
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    Quote Originally Posted by biohazard View Post
    its my understanding from back when i though about going this way, that the stock res will not be big enough (volume) wise. when the ram is fully extended the res will be low on fluid and depending on you angle on the trail could be starving the pump. guy were using a piece of rad hose the same diameter as the cap to extend it slightly.
    That would be true if the fluid getting pumped out of the other end of the ram wasn't getting pumped back into the reservoir. If the system is remotely close to being balanced, what volume the pump pumps into the ram on one side, will get returned out the other side of the ram and back into the reservoir - all with in a single cycle. I doubt you will even see much of noticable drop in fluid in the reservoir if you were watching the fluid level as the steering is cycled left to right. Bring the rod size to bore ratio down on a single ended ram and the system becomes more unbalanced....this could lead to larger variations in fluid level. With a 1.75" bore and 5/8" rod, the systems is just about as balanced as a single ended ram steering system can get.

  5. #25
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    The differential volume of the 1.75"B x 8"S x 3/4"R cylinder is 3.53 cuin or about 2 oz or 60 ml Your reservoir needs to be large enough so that this level change in the system when steering does not cause cavitation( air) at the pump suction.

  6. #26
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    So this would work then? lol


    And what's the guess? Driver side ram fitting to bottom box port, passenger to top.

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    Can't remember but leave the ram disconected from the tie rod 'til you figure it out or it won't do anything but bind and make funny noises.

  8. #28
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    Easiest thing to do is fill your box without your hose hooked up turn to the left or right and see what one is spewing fluid and then that should tell you what side of your Cyl. your hose is going to, i would think that is the easiest way, but please do correct me if i am wrong .

  9. #29
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    Or, if you get it wrong the first time, swap the hoses.






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    Here is your answer to your Question in this link that i have found for you Curt

    http://www.pirate4x4.com/tech/billav...ssistTap/1.jpg

    Hope this will help you bud.

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    Curt, Your cylinder is here. Sent you a PM

  13. #33
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    Thanks again Sean! A buddy's poppin in to grab it shortly. Let me know if you can't figure out the security question. lmao


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    Usually Vagina's cost money, this time it gave me money...lol

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    Hmm.. I need to find one of those magical cash giving vaginas.
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