Re: pat teakle vega
Posted: 28 Jul 2020, 12:12
Hi guys, just to butt in here Epoxy and Polyester should not be mixed. Keep to one or the other. Roo must have been lucky in the past. If mixed the bond will appear to have taken(like the polyester to wood situation that Jack spoke about) however a little later down the road when both are cured thoroughly it will de-bond on the first hard landing.
Many of us model fliers will remember the olden days finding either fuselage former's or servo bearers etc rattling around in the bottom of the fus after such a landing.
Many of us modern glass ship flyers have taken to bonding in the fuselage former's with silicone as devised by the Germans some years ago. The idea behind it is that this more flexible joint allows the fuselage to distort throughout its total length when required to do so without breaking a more solid bond.Most former's are used as a shape keeper or servo mount anyway and silicone adhesive is ideal for this. Also in engineering terms it is not a great idea to hold a flexible item with a non flexible bond. This works well for either epoxy or polyester. Can be obtained in clear or white, small or large amounts.
Many of us model fliers will remember the olden days finding either fuselage former's or servo bearers etc rattling around in the bottom of the fus after such a landing.
Many of us modern glass ship flyers have taken to bonding in the fuselage former's with silicone as devised by the Germans some years ago. The idea behind it is that this more flexible joint allows the fuselage to distort throughout its total length when required to do so without breaking a more solid bond.Most former's are used as a shape keeper or servo mount anyway and silicone adhesive is ideal for this. Also in engineering terms it is not a great idea to hold a flexible item with a non flexible bond. This works well for either epoxy or polyester. Can be obtained in clear or white, small or large amounts.