Model Construction Tips by Mel Lyne 1. This makes them hinge badly in calm conditions. If this survives crashes, the model will last. Also make tips strong for surviveability. Solartex works well, mylar is tough.
Diesel fuel has ether in it, which is a great solvent.
For this reason you have to do a really good job of fuel proofing, especially the motor area and outboard wing where the black exhaust residue winds up. Fuel seepage is a major concern, so use coloured dope or epoxy in critical areas. The lighter models fly better. Try to build to 16oz. The smaller models should be lighter.