Art Matteson of AMR&D uses tape for his gap seals. It's 3M Scotch #8672
one
inch wide polyurethane tape which you can buy for like $30 a roll. Of
course for those of us with certified planes it would be "illegal" to put
the stuff on without a 337 or STC. As far as I can tell it works about as
well as aluminum gap seals it's just cheaper and easier to install.

I know it's illegal to put tape on control surfaces without an STC -- but
what's the group-think on putting it on other aerodynamic problem areas?

For example, on a gap between two clamshell halves of a wheel pant? Does
putting speed tape on a non-structural member require an STC?
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"