I would be interested in some data about this product. Is it Good/bad, How to use, any problems, any installation methods to avoid? Anything else?

 Sparky is right, it takes some getting used to, but it's totally the way to go. One BIG thing to remember is don't even think about sanding until you have enough clear on it.

 Now, if I can figure out how to do wingtips with the stuff...

Guys,
What is the best way to apply polyspan to a fuselage--or should I use something else?

Thanks,
Jim

Great for wings! Tips get silkspan! Easy answer...

 

Just be sure to install it shiny side up.
Attach it to the perimeter of the wing first ,top and bottom, prior to shrinking it with a heat gun,.
It is really tough after the dope is applied.
Put the first couple of coats on with nitrate, it helps the butyrate to adhere better.

For doing tips we used to do this when we were a lot younger. Dope by itself is too slow to grab and hold the covering material in place so we used to mix Duco cement in a 50/50 ratio with the clear. Now to clarify this we only made up a little amount of this as we only used it to hold down really stubborn spots. It also worked great on undercambered wings. The weight was really negligable and it did sand out nicely.
In a spirt of nostalgia I built a Sterling P-38 and used polyspan on the wing and used this technique for the tips and it was absolutely painless to do them. Only I used Sigment as Duco is hard to find. This is a really small tright radiused curve to cover if your familiar with the plane.
Dennis.

Who makes "Polyspan" ?

Thanks.. I'll look for it..

If you try to adhere polyspan with dope, and then cut the scrap off the edges with sandpaper, it always gets creates the dreaded fuzz.  Try adhering the polyspan with CA instead, and when you sand it, the edges are stiffened enough to give the fibers support so the sanding block cuts clean, without fuzz.  I generally fix the poly at the root/high point, with just a dot of CA, with the poly aligned along the trailing edge, and enough hanging over the leading edge to wrap all the way around. Stretch it wrinkle free to the tip, and secure the tip with a CA dot at the high point.   Then adhere the trailing edge with 3- 4 dots, and fill in the root and tip with full continuous CA seams.  Fiinish the trailing edge, and wrap around the leading edge, repeat the process on the flip side, heat shrink and its done.  Sikspan on the tips sos you can sand smooth.  I don't believe its as good as silk.  The puncture resistance is a little better, but it doesn't seem to add as much torsional rigidity.  Tom Hampshire