Pneumatic Retracts
#1
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Pneumatic Retracts
May be the coolest thing I've ever seen! I just got mine for my top flite Texan that I'm building. It's the Century Jet version, and they are AWESOME! I had to play with them (of course) since it'll be at least mid-summer before they see any real action. I have a couple of questions, though.....
The kit came with two plastic things that kind of screw together--one red and one black. Are these quick connectors (so the tank and valve can be located in the fuse?) It's all I can come up with and the instructions really don't mention them.
Also..
CJ recommends buying their special valve body to get slower responses, and not in-line restrictors. The only reason they give is that it is one more splice in the line, and one more possible place for an air leak. Has anyone out there put restrictors inline using CJ retracts? Will they work ok? I don't want the retracts going up and down full speed. With 80 PSI, it's not too scale looking! Plus, it seems as though it would put a lot of stress on the mounts with those things slamming up and down that fast (with a 3 inch tire at the other end).
Thanks for the help...
The kit came with two plastic things that kind of screw together--one red and one black. Are these quick connectors (so the tank and valve can be located in the fuse?) It's all I can come up with and the instructions really don't mention them.
Also..
CJ recommends buying their special valve body to get slower responses, and not in-line restrictors. The only reason they give is that it is one more splice in the line, and one more possible place for an air leak. Has anyone out there put restrictors inline using CJ retracts? Will they work ok? I don't want the retracts going up and down full speed. With 80 PSI, it's not too scale looking! Plus, it seems as though it would put a lot of stress on the mounts with those things slamming up and down that fast (with a 3 inch tire at the other end).
Thanks for the help...
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RE: Pneumatic Retracts
I've used the wheel collars as air restrictors as you mentioned. They work fine for a while, but you can develp a weak spot in the air line where the allen screw restricts the air pressure at the wheel collar, which could develop into an air leak in the system. Not good.
Also the amount you turn the screw in the wheel collar is a VERY small amount to get the desired effect you need. Often times is hard to do.
Best bet, as I have found is to spend the extra few dollars and get the adjustable air valves. You can't go wrong with these. You're spending alot of money on a plane already, don't take any chances with a half-baked idea.
Just my 2 cents worth
Cary
Also the amount you turn the screw in the wheel collar is a VERY small amount to get the desired effect you need. Often times is hard to do.
Best bet, as I have found is to spend the extra few dollars and get the adjustable air valves. You can't go wrong with these. You're spending alot of money on a plane already, don't take any chances with a half-baked idea.
Just my 2 cents worth
Cary
#4
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RE: Pneumatic Retracts
Yes, the red and black things are quick disconnects that allow you to quickly connect and disconnect the air lines between the wing and the fuse.
Inline air restrictors do not slow down the retracts that much. A variable air control valve does a much better job.
Inline air restrictors do not slow down the retracts that much. A variable air control valve does a much better job.