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- From: macs@worke.Eng.Sun.COM (This IS a test)
- Newsgroups: rec.models.rc
- Subject: Re: Light Covering...
- Date: 27 Dec 1992 08:52:14 GMT
- Organization: Sun
- Lines: 61
- Message-ID: <ljqrluINNgq4@exodus.Eng.Sun.COM>
- References: <226@heimdall.sdrc.com> <2569@rnivh.rni.sub.org> <BztyrF.22A@usenet.ucs.indiana.edu>
- NNTP-Posting-Host: worke
-
- In article <BztyrF.22A@usenet.ucs.indiana.edu> ntaib@silver.ucs.indiana.edu (Iskandar Taib) writes:
- >In article <2569@rnivh.rni.sub.org> torsten@rnivh.rni.sub.org (Torsten Leibold) writes:
- >>dqwelch@sgidq4.sdrc.com (Mike Welch) writes:
- >
- >>>I was wondering what kind of covering material to use? I realize
- >>>that Monokote is too heavy. I have used some stuff called
- >>>Flite Cote. It was light, but not very strong.
- >
- >>>Would tissue and dope be advised? Any other advice?
- >
- >>No !! Don't use tissue like silk or nylon if you'd like to get a light
- >>covering. It needs vast amounts of paint to get enough tension and
- >>that will make the covering much heavier than any film covering.
- >
- >I disagree. Nylon or silk may not be awfully light, but Silkspan is.
- >The amount of dope needed to fill the tissue isn't much and the covering
- >adds a huge amount of stiffness to the structure.
- >
- Japanese tissue is even lighter. Modelers have been covering free-flight
- and other models with tissue and dope for years. It is still the
- prefered covering method for the majority of Free-flight models.
- Silkspan is stronger (even in the lightest grade), but is a little
- heavier. From 3-4 coats of thined dope (50-50 dope/thiner) should be
- enough to weather-proof and fill the grain when using tissue or
- light weight Silkspan.
-
- By the way, Japanese tissue is not the same stuff you get at the crafts
- store. Look in the model magazines for sources if your local hobby shop
- doesn't have any.
-
- >>Your only chance is to find a light film. I usually use Solarfilm by
- >>robbe for such purposes. But I think that it's too expensive when it
- >>reached USA....
- >
- >You can get Solarfilm from Indy R/C. Its cheaper than Monokote, something
- >like $5 a roll. Problem is that it isn't a film that adds much stiffness
- >to the wing.
- >
- >If I were you I'd investigate the Mylar gift wraps available at KMart
- >and Target. These caught my eye a few weeks ago and I bought some. Its
- >a little expensive for Combat so I might not use much of it but it is
- >honest-to-goodness mylar - very strong. (Careful though - some colors
- >might not be. The irridescent "Opal" film isn't) It is quite a bit
- >lighter than Monokote and you will have to brush on Balsarite or use
- >3M77 to attach it.
- >
- >
- If you really want to use an iron-on film find some clear Micafilm
- and attach it with Balsarite. I have talked to a few Hand-Launched
- R/C glider afficionados and they say that it is the lightest iron
- on covering you can use. Make sure it is the clear stuff, not white.
-
- The only glider I have ever heard of in this weight class (R/C) was
- a design called the Whisper that appeared in Model Builder magazine
- some years back. I don't remember what issue, but I am sure the people
- there will help you locate it. The specs were something like 60"
- wingspan, and approximately 2.9 oz/sq ft. I don't remember the
- total weight, but it was light. The article specified a tissue/dope
- covering, by the way.
-
- Manuel.
-