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<blockquote data-quote="dirtygoat" data-source="post: 1447133" data-attributes="member: 17531"><p><strong>Orbital Valves...</strong></p><p></p><p>The orbital valve is going to take the place of your OE steering box... The most common is a Char-Lynn... There are others like Danfoss and such, but I've found that the Char-Lynn valves are easier to research...</p><p></p><p>The main thing you need to worry about is displacement and open center...</p><p></p><p>They should all have I.D. plates on them... On the Char-Lynn valves there will be a 10 digit number, something like xxx-xxxx-xxx... That is what you'll need to find out what the specs are for the valve... </p><p></p><p>Mine is a Char-Lynn 241-1004-001, open center, non load reactive, 7.3 c.i. displacement... Has 4 fitting ports...</p><p></p><p> </p><p></p><p>241 = product line id number</p><p></p><p>1004 = product id number</p><p></p><p>00 = relief valve pressure code (none)</p><p></p><p>1 = engineering change code</p><p></p><p> </p><p>It gives me around 3.5 turns lock to lock...</p><p></p><p> </p><p><strong>Open center... </strong></p><p></p><p> </p><p></p><p>This is important because it allows fluid to pass threw the valve when you're not turning... A closed center will build up pressure and lock up... I had a buddy that tried one and it would lock up the steering about 30 yards down his road...</p><p></p><p> </p><p></p><p><strong>Non-load reacting...</strong> </p><p></p><p> </p><p></p><p>This means the valve will not return to center like normal steering will... You also don't have any "feel" in the steering wheel...</p><p></p><p>Where as, a load-reacting valve will return to center and does give the driver some "feel" at the steering wheel... I have no experience with load-reacting valves...</p><p></p><p> </p><p></p><p><strong>Displacement...</strong></p><p></p><p> </p><p></p><p>This is how many cubic inches the valve handles... Less means a slower turning system, more means a faster turning system... Most set ups I have seen run between 6.5 and 9.5... Keep in mind the faster the system, the more you're asking from your steering pump...</p><p></p><p> </p><p></p><p><strong>Ports...</strong></p><p></p><p> </p><p></p><p>There are valves with a power beyond port(5 port valve)... I've heard that you can use it for rear steer, but that's something I have never dabbled in...</p><p></p><p>On the four port valves you have a R,L,P,T...</p><p></p><p>R, is for right turning... This goes to your ram pushing fluid in the cylinder causing the shaft to push or pull in a single ended set up... In a double ended set up it will fill one side of the cylinder causing that side to go out and the other to come in...</p><p></p><p>L, is for left truning... Works the same as above...</p><p></p><p>P, comes from the pressure out on your steering pump...</p><p></p><p>T, goes back to the tank...</p><p></p><p> </p><p></p><p> </p><p></p><p>Here's an example of the I.D. plate on a Char-Lynn, my valve and forklift steering shaft...</p><p></p><p></p><p><img src="http://i454.photobucket.com/albums/qq267/thedirtygoat/Hydro/orbital.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p><img src="http://i454.photobucket.com/albums/qq267/thedirtygoat/Hydro/orbital2.jpg" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p></blockquote><p></p>
[QUOTE="dirtygoat, post: 1447133, member: 17531"] [b]Orbital Valves...[/b] The orbital valve is going to take the place of your OE steering box... The most common is a Char-Lynn... There are others like Danfoss and such, but I've found that the Char-Lynn valves are easier to research... The main thing you need to worry about is displacement and open center... They should all have I.D. plates on them... On the Char-Lynn valves there will be a 10 digit number, something like xxx-xxxx-xxx... That is what you'll need to find out what the specs are for the valve... Mine is a Char-Lynn 241-1004-001, open center, non load reactive, 7.3 c.i. displacement... Has 4 fitting ports... 241 = product line id number 1004 = product id number 00 = relief valve pressure code (none) 1 = engineering change code It gives me around 3.5 turns lock to lock... [B]Open center... [/B] This is important because it allows fluid to pass threw the valve when you're not turning... A closed center will build up pressure and lock up... I had a buddy that tried one and it would lock up the steering about 30 yards down his road... [B]Non-load reacting...[/B] This means the valve will not return to center like normal steering will... You also don't have any "feel" in the steering wheel... Where as, a load-reacting valve will return to center and does give the driver some "feel" at the steering wheel... I have no experience with load-reacting valves... [B]Displacement...[/B] This is how many cubic inches the valve handles... Less means a slower turning system, more means a faster turning system... Most set ups I have seen run between 6.5 and 9.5... Keep in mind the faster the system, the more you're asking from your steering pump... [B]Ports...[/B] There are valves with a power beyond port(5 port valve)... I've heard that you can use it for rear steer, but that's something I have never dabbled in... On the four port valves you have a R,L,P,T... R, is for right turning... This goes to your ram pushing fluid in the cylinder causing the shaft to push or pull in a single ended set up... In a double ended set up it will fill one side of the cylinder causing that side to go out and the other to come in... L, is for left truning... Works the same as above... P, comes from the pressure out on your steering pump... T, goes back to the tank... Here's an example of the I.D. plate on a Char-Lynn, my valve and forklift steering shaft... [IMG]http://i454.photobucket.com/albums/qq267/thedirtygoat/Hydro/orbital.jpg[/IMG] [IMG]http://i454.photobucket.com/albums/qq267/thedirtygoat/Hydro/orbital2.jpg[/IMG] [/QUOTE]
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