Covering Weight Table

This table of covering weights originated by Fritz Bien, Charles River Radio Controllers (December 1996). Others contributed via the August 1995 Flying Models article by Herm Perez, adding covering data, and Radio Control Soaring Exchange (RCSE) articles. Yes, these are old values, but they're still accurate — the physics of covering weight hasn't changed.

Covering Color Weight (g/sq.ft.) Comments
Japanese TissueAll colors0.65The lightest!
Esaki Light SilkClear0.97Really hard to put on
Nitrate DopeClear1.02 coats, 50/50 thinned
Dope, over silkAll colors2.0
MicaFilmTransparent White2.2Needs Balsarite
UltracoteTransparent Yellow (lite)3.40.001″ thick
5/8 oz. Fiberglass + PaintClear3.9Needs filler and color
MicaFilmPreprimed3.9
MicaFilmYellow & Red4.0Needs Balsarite
Polyester Dress LiningAll colors4.2Needs Balsarite & dope
Sig KoverallWhite4.3Needs dope or paint
Sig SupercoteSilver4.8
UltracoteTransparent Yellow5.00.0015″ thick
MonokoteTransparent Red5.5circa 1988
MonokoteRed5.8circa 1996
MonokoteBlack6.0circa 1985
MonokoteMetallic Platinum6.0circa 1996
UltracoteCub Yellow6.60.002″ thick
Dope, gloss finishAll colors7.08 clear, 4 color, 1 clear coats
MonokoteRed7.1circa 1971
MonokoteWhite7.3circa 1990
MonokoteYellow7.5circa 1996
Ultracote PlusPearl Yellow8.20.0022″ thick
UltracoteDark Red8.5circa 1996
MonokoteOrange Fluorescent9.4circa 1996
Century 21 FabricWhite10.4Heavy!

The table is sorted lightest to heaviest. Japanese Tissue at 0.65 g/sq.ft. is over 15× lighter than Century 21 Fabric at 10.4 g/sq.ft. For handlaunch planes where every gram counts, MicaFilm and Esaki Silk are popular choices.

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