ORIGINAL: dredhea
ORIGINAL: PortCityFlyer
Tail is on the work schedule for next week. I fly a CRJ all weekend and then come home and model all week! I would like to use nylon wing bolts instead of rubber bands. Anyone have any suggestions on how to engineer a proper front and rear attach point on the wing.
I'm a newbie, so I'm not real familiar with the Tele, but why not just steal the method other manufacturers use? Install a hardwood block in the fuse at the center of the leading edge. Drill a quarter inch hole for a dowel to slide into. Install a quarter inch dowel in the leading edge of the wing, making sure that it's anchored to something solid (a forward spar perhaps?). On the trailing edge, install a hardwood bolt plate in the fuse and plywood (3/16") on the top of the trailing edge. Place the wing on the fuse, making sure of proper alignment, and drill the bolt holes throough the wing and bolt plate using a 3/16" bit. Enlarge the holes in the wing ONLY to 1/4". Tap the holes in the bolt plate, apply several drops of CA to the holes and after it has cured fully, retap. (I wish there was a blindnut that could replace this method)
Problem with the above method is that the Telemaster didn't have much of a structure at the point where the trailing edge meets with the fuselage and the leading edge of the wing sits pretty much on top of the fuselage former up front. Probably the best way to handle this is to glue two 1/4" plates in (one near the leading edge and one near the trailing edge of the wing) the fuselage and use 4 1/4"-20 nylon screws. Be sure to beef up the structure in the area's of the fuselage to adequately support the blocks from the pulling stresses. Then cut some balsa block material to glue into the leading edge of the wing that conforms to the shape of the ribs to keep you from crushing the structure when tightening down the 1/4"-20 nylon screws. Then add some 1/16" ply on top of the wing to keep it from crushing the balsa and evenly distribute the load. It'll take some work, but in the long run will save you a lot of headaches from dealing with the poor quality of rubbers bands being sold these days.
Cheers,