Paul Williams Posted March 22, 2010 Share Posted March 22, 2010 Just fitting a air retract system to my corsair ARTF I am quite suprised to find no warnings on the cylinder or in the instructions regarding max pressure. What can I safely fill it to. I pumped it to 3 bar and it performed 5 lifts which I found a little disapointing. Quote Link to comment Share on other sites More sharing options...
David Ashby - Moderator Posted March 22, 2010 Share Posted March 22, 2010 I've used systems on 16-20lb models that need between 80-100psi Paul and yes, 5 cycles is about what I would get too. Hope that helps. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted March 22, 2010 Share Posted March 22, 2010 Of course it also depends on the componeets of the system, and how strong the fittings etc are - the number of operations obtained will also depend of course on the size of the air receiver, but the figures David mentions are the same as I use too. Quote Link to comment Share on other sites More sharing options...
winchweight Posted March 22, 2010 Share Posted March 22, 2010 I use 100 - 120 psi on all my systems. Bear in mind though, volume of air is as important as pressure. You will probably find that higher pressure doesn't give you any extra cycles, then try a bigger cylinder, or even add another. I tend to fit two cylinders to my models or at least one big one. Quote Link to comment Share on other sites More sharing options...
Doug Ireland Posted March 22, 2010 Share Posted March 22, 2010 I can get about 5 Bar out of my hand-pump and gives easily 10 cycles of the gear. Quote Link to comment Share on other sites More sharing options...
Aslan Posted March 23, 2010 Share Posted March 23, 2010 How do the two cylinders work? How are they set-up?Edited By Aslan on 23/03/2010 14:22:12 Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted March 23, 2010 Share Posted March 23, 2010 Probably just doubled up using a simple "T" piece Quote Link to comment Share on other sites More sharing options...
winchweight Posted March 23, 2010 Share Posted March 23, 2010 Yup, it's that simple. If you can fit a single larger air supply then do, but I find in a lot of smaller ARTFs there's no room for one large can, but plenty for two smaller ones. Quote Link to comment Share on other sites More sharing options...
Paul Williams Posted March 23, 2010 Author Share Posted March 23, 2010 thanks guys, it is quite a large cylinder 2.5" x 11" I have only tried 3 bar is 5 bar safe ? t seems a very thin walled vessel for that kind of pressure. Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted March 23, 2010 Share Posted March 23, 2010 Well 100 PSI is about 7 bar I think, so 5 should be fine I reckon, as this is about 75 psi? Its more the fitiings like plastic t pieces etc which could be vulnerable . Quote Link to comment Share on other sites More sharing options...
Paul Williams Posted March 23, 2010 Author Share Posted March 23, 2010 Thanks, watch for the mushroom cloud over Manchester ha ha. While your online are you still doing the onboard glow systems ? Quote Link to comment Share on other sites More sharing options...
Tim Mackey Posted March 23, 2010 Share Posted March 23, 2010 Nah, sorry Paul, stopped a while back, and am just preparing to send all my remaining components etc to another forumite. Quote Link to comment Share on other sites More sharing options...
Mark Jones Posted March 25, 2010 Share Posted March 25, 2010 Hi ive never had air retracts before, but have fitted some to my new graupner kwikfly and was not sure of the pressure either, so i used my foot pump until i could hardly pump it and i get about 5 cycles on trike retracts Quote Link to comment Share on other sites More sharing options...
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