i found a nice comparison chart showing the various weights of coverings: 1/2 fiberglass cloth seems to be one of the lightest coverings on the list. of course add paint but that won't increase the overall weight to much.

david


Covering and Painting Weights

Here's a table of, purported, covering weights originated by Fritz Bien, Charles River Radio Controllers, December 1996, with other contributors (August 1995 Flying Models article, Herm Perez, adding covering data, and Radio Control Soaring Exchange [RCSE] articles):

Covering Weights Chart Covering Color Weight [gm/sq ft] Comments
Monokote Red 5.8 circa 1996
Monokote Yellow 7.5 circa 1996
Monokote Metallic Platinum 6.0 circa 1996
Monokote Red 7.1 circa 1971
Monokote Black 6.0 circa 1985
Monokote White 7.3 circa 1990
Monokote Transparent Red 5.5 circa 1988
Monokote Orange Florescent 9.4 circa 1996
Ultracote Dark Red 8.5 circa 1996
Ultracote Cub Yellow 6.6 0.002 in thick
Ultracote Plus Pearl Yellow 8.2 0.0022 in thick
Ultracote Transparent Yellow 5.0 0.0015 in thick
Ultracote Transparent Yellow (lite) 3.4 0.001 in thick
Century 21 Fabric White 10.4 Heavy!
MicaFilm Yellow & Red 4.0 Needs Balsarite
MicaFilm Preprimed 3.9
MicaFilm Transparent White 2.2 Needs Balsarite
Sig Koverall White 4.3 Needs dope or paint
Sig Supercote Silver 4.8
Esaki Light Silk Clear 0.97 REALLY Hard to put on
5/8 fiberglass/paint clear 3.9 Needs filler and color
Japanese Tissue all colors 0.65 The lightest!
Nitrate Dope clear 1.0 2 coats/ 50-50 thin
Dope, gloss finish all colors 7.0 8 clear, 4 color, 1 clear coats
Dope, over silk all colors 2.0
Polyester Dress Lining All colors 4.2 Needs Balsarite & dope