Hello,
My name is Matt Piatkowski. I fly stunt in Toronto, Canada.
Please see the attachment: this is my eParrot with wing (~580 sq.in) covered by a single layer of 1.5 mil. Doculam only.
Contrary to M-cote, U-cote and other popular R/C style "cotes", Doculam is lighter, adds some torsional and bending stiffness to the wing and never goes slack or wrinkle on hot summer days. My only concern is long term durability.
At this moment, nobody on this forum can tell me from his own experience if a single layer of 1.5 mil. Doculam will survive, say, 200 pattern flights using the model with medium or large wing.
Have you guys noticed any air bubbles underneath U-cote, lamination film or/and SLC after ironing it on top of the Jap. tissue?
I would love to use medium colored Silkspan on my next large (700 sq. in.) wing and iron Doculam on top of it for shine and additional strength but I am concerned that pockets of trapped air may look ugly.
Perhaps the Jap.tissue, Silkspan and, say, Polyspan retain enough porosity after doping them to balsa and in the open cells area that the air can escape "into the wing" while the M-cote, U-cote, SLC and such are being ironed?
Your comments will be appreciated,
Matt