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trying2fly
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back in the summer I built a pushy cat twin boom plane,its a balsa plane which uses the same gear as the park jets,it as 6mm balsa wing with dihedral,i started making another in depron but couldn't come up with a good way of putting the dihedral into the wing with a carbon tube,any ideas any one[ATTACH=full]53756[/ATTACH]

Bend 1/4" copper tubing to the dihedral you want .Take "Walmart" wooden round sticks ( they sell in 48 inch lengths) and soak them in hot water(shower-tub). After about 10 min take out and bend the wooden dowel to the copper tubing and dental floss them (just wrap several turns of the floss around the copper tubing and the wet stick to conform to the bend in the tubing. Let dry for about 2 hours in the sun, cut the floss off and separate your dihedral brace, and Voila!!!No need for carbon fiber. The dowels come in 1/8 inch, 1/3 inch, 1/4 inch, and 3/8 inch diameters. Chas
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Skydiver
Quote:
back in the summer I built a pushy cat twin boom plane,its a balsa plane which uses the same gear as the park jets,it as 6mm balsa wing with dihedral,i started making another in depron but couldn't come up with a good way of putting the dihedral into the wing with a carbon tube,any ideas any one[ATTACH=full]53756[/ATTACH]

Hi, don't use carbon tube, use alloy aluminum that is very stiff.. Besides, cg tube or rod just increases the cost of the plane a lot.. 3mm aluminum rod works just fine, and the stiff alloy
holds the bend.. Your local metal store should stock it and they charge by the pound, lots less than cg.... One length, just bent in the middle...
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