I have followed the Ultra Precision schematic and hooked up my airlines exactly as they call out. However my mains operate in opposite directions of each other. I rechecked the lines multiple times. When I switch the lines to the UP-2 (opposite to what UP schematic shows) and they go in the proper direction together but one of the gears "bangs" up and down while the other moves smoothly. Something is just not right - any suggestions? Is the schematic correct that comes with the UP-2?

I,m not sure about the issue you're having with how its hooked up, but as far as the speed is concerned, there could be several problems. One is that the needle valves may need to be adjusted. They are VERY sensitive - from full off to full on is only about 3/4 of a turn or so. Also, I have had a problem with one of them that there was some "junk" in the valve that came flying out when I removed one of the needle valves completey when there was air in the system. It worked perfectly after that...

Bob

When I hooked my lines I got the ( red for down ) on the same side,red on the right side and on top same side, not X over like the picture shows. Bob my be right, put that line under water to see the air flow when you retract the gears, they should all go up hard or slow not at a diferent speed and yes, the valves are very sentive, when you adjust one the other one has to be adjusted.

I "T" the mains and the lines whent to the side of the valve, the nose lines when to the top of the velve.

Good luck.

ANy of you guys have a copy of the schematic for this valve with the directions? I have a valve with no paperwork, and need to know what goes where and where it comes out. Thanks
Tommy

http://www.up-1.com/uptwo.html might help

Thanks Gordon, I knew someone would have a link. I appreciate the help.
Tommy

Be mindful that the nipples that are pointing up are exact duplicates as the ones that come out the sides. They are 90 degrees to each other. Either plug all those top ones or side ones whichever you prefer for your installation or you can do as Carlos run a small line from top to side nipples and place a Tee so there is only one output ( this is good if you already have all 3 gear lines connected together). One other option like I do, is to have the nose gear use the top ones and the main gear use the side ones, or vice versus as long as you don't have all three gear lines tee'd together already it makes it look a little cleaner. That photo that Gordon posted from the UP site should clear up everything..they just do not label those nipples that are pointing straight up in the diagram. Just remember there are two outlets for everything 2 gear up, 2 gear down, 2 doors close, 2 doors open. The only one without the matching nipple 90 degrees to it is the input line.
Unless you have lines crossed check for a kinked line on the one that moves slow. They should be the same movement as already stated. The kink or blockage may be in the gear down line for that one not allowing the air that was in the gear cylinder to escape correctly. (usually it will kink right out of the gear cylinder nipple if in tight quarters or the line is pulled with no slack.)
BC

More good information, Thanks BC
Tommy

I'm pretty sure I have the hardcopy instruction sheets for both the UP3 and UP2 at home - so if you are still looking for more info than the above supplies, lemme know and I will dig it out and post a scan of it.

I seem to recall Todd at Dreamworks having all of these instruction sheets posted on his site somewhere, but can not find it there yet.

Gordon

I think between the information from BC and the picture which you referred me to, I should be able to figure it out. I am trying to set up a plane for a guy and he sent this valve to me. I had not used this particular UP vlave (only the UP-6) so I was hoping for one NIP with directions....
Tommy

Guys I also have same valve and planning to use it in my panther. I have this pic of the tubing schematic diagram. Notice that it shows me how to conect for three gears cilinder but only two main doors cylinders. How do I connect it for the third door cylinder?

Thanks
Alejandro

You see on the diagram where it shows a "tailwheel" cylinder. There is not one on the Panther. That should say nose gear door. Hook it to that one. That should work for you.
TOmmy

Tommy, I know to connect for the nose strut. My question is for the nose door.

Alejandro

Just use a Tee from one set of door nipples for both main doors and use the second one from the valve to the nose gear door cylinders. Look in my thread about the Panther and all will be seen clearly. Don't forget to use the clippard shut off switch on the nose gear strut so the nose doors don't try to close when the gear is down, (UP3 valve only).

Alejandro,
WHat I am saying is that if you connect the nose gear door to the same line as the nose gear, it will open, right before the gear deploys. As Terry said, you can then use a small clippard valve on the cylinder door (close side nipple), so that when the gear retracts, it hits the clippard valve, thus allowing the air to pass thru and shutting the door. This way the door only closes if the gear has retracted, and prevents it from closing prematurely or hanging up the gear leg.
Of course the main gear doors open, then close with the cyle, so they have to be on a sperate line, like you are aware.
Terry's method works well, I have used it successfully, and it is much easier to make it work than it sounds.
Tommy

Thanks guys, sorry for my english is not he best but I think I got it know. I'm color coding a copy of the diagram to keep me on track.

Alex

It sounds like you just connected one of the retract cylinders the wrong way around, nothing to do with the UP2 valve. That would account for them going in opposite doirections, and explains why when you tried connecting the UP2 the wrong way around things didn't work properly. Connect the UPs the way its diagrams show, and if one retract is going the wrong way then swop around the air tubes at the retract cylinder.
Harry

Harry - I fixed my issue back in FEB 2007 when I first made this post. Someone else has brought this up again.

Sorry JC,
That was me, I had done a search and found the thread and figured if those who had helped were still "tuned in" they could lend some assistance, sorry to resurrect it...LOL
TOmmy