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- Path: sparky!uunet!usc!chaph.usc.edu!news
- From: wiegley@phakt.usc.edu (Wigs)
- Newsgroups: rec.models.rc
- Subject: Re: Which Mechanical Retracts?
- Date: 24 Jul 1992 22:38:47 -0700
- Organization: University of Southern California, Los Angeles, CA
- Lines: 30
- Message-ID: <l71q77INNj1g@phakt.usc.edu>
- References: <1992Jul24.154519.4066@news.iastate.edu> <62728@cup.portal.com>
- NNTP-Posting-Host: phakt.usc.edu
-
- >You might consider pneumatics - they are a little more expensive and take up
- >more space, but they're really reliable and can be actuated with the cheapest
- >(or lightest) servo you can find. Weight wise, when you take out a heavy
- >retract servo and it's linkages, and replace them with a lightweight air
- >cylinder and almost weightless lines, it's only an ounce or so more weight.
- >
- >I'm sure there's some other opinions on the net.....?
- >
- > -swb-
-
-
- I'm totally impressed by retracts and I hope to have a plane someday with
- them (P40 Warhawk floats my boat :-).
-
- Though I love the way planes look with active retracts on them I don't have
- the foggiest idea of what one needs to do to incorporate them into the
- model. (I realize kits have the plans) but what I'ld like to know is how
- much more effort is it to install mechanical retracts. and more
- importantly...
-
- What is all the hardware you need for pneumatic retracts?
- the retracts, I guess an air cylinder which you mentioned, and probably an
- activation mechanism to open/close the air valve.
-
- for the air cylinder how does one get air into it? bicycle pump? (silly but
- possible) or a compressed air cartridge? How much weight is this type of a
- system?
-
- - Jeff
-
-