Here's a demo video covering how I add dihedral to a depron Armin wing.
I show how to bend a 200mm length of ali tube to set the dihedral angle and hold the spars.
This video also shows my swappable motor mount for the Red Sloper and other construction tips.
Here's a slope soaring video showing how the dihedral makes the Red Sloper into a smooth and relaxing glider while slightly reducing the aerobatic capability.
Here are the specs for the Red Sloper fuselage, designed and built especially for the 1.5m depron 10% chord wing detailed in the previous post.
Aileron servos - TGY 9018MG metal gear micros
Elevator and rudder servos - HXT900 9g
Receiver - Hobby King 6ch
BEC - Hobby King 5A
The 750mm fuselage is a square tube 50 x 50mm outer size constructed using Flite Test style joins rather than ExAir style bends.
A 15mm x 350mm tapered slice is removed from each side, and the bottom bent up and re-glued to close the gap. That gives the tapered rear half.
Horizontal stabiliser is 440mm x 130mm, tapered to 100mm at the ends, and the 50mm elevator is cut from that.
Vertical stabiliser is 200mm high, 120mm at the base (for a longer glue join) tapered to 40mm at the top. Rudder is 50mm tapering to 20mm at the top.
The control surface tapers are just for looks, but looks are very important. A daggy tail ruins the overall impression of the plane.
Elevator servo is stuck inside the fuselage near the rudder servo.
There is no need to have the tail servos mounted forward with long push rods. The amount of weight saving is not significant for a speedy slope soarer. In my normal 10-15kn flying conditions more weight is often needed.
The nose is soft EPP foam with a tongue extending into the fuselage. It holds the battery, nose weight (4 large washers), BEC and receiver.
Nose is held on with 2 velcro tabs.
Wing tie-downs are 4mm carbon tubes glued in and reinforced with ID card plastic
Here's the maiden flight of this excellent glider, probably my best design and build so far.
