After hanging unfinished for 30+ years, I have finally decided to complete the old Sig Fokker D-7 kit. All thats left to do is cover and paint. Upon looking it over, it appears that the top wing may not be aligened with the bottom wing. Looks to be like the top wing has an ever so slight angle upwards. I remember from building rubber powered models, that there was such a thing called "incidence" when fitting the wing to the body. How does one aligen both wings in a bi-plane? I would not look forward to cutting apart the wings at this point here. Once again I would like to use the Torpedo .35 for power.
For control line should be 0-0. just finsh that thing it will fly great and maybe do a real big loop. Then get a 38 speical kit for your green head. You will be alot happer with it. run power master 29% all caster 10%nitro. r/c plug thunderbolt.
I have not built a biplane. However, I see on some CL bipe plans, a degree or 2 of positve in the top wing, or the same negative in the lower wing. Given my builing skills, I would try this and end up 0-0.
I have been doing more reading on the issue of incidence and have learned that, when a line is drawn from the center of the prop shaft back along the fuselage. It is refered to as the "thrust line", at this point, a mesurement is taken as to setting up of positive or negative incidence in the wings and the elevator as well. A line of mesurement through the center of the leading and trailing edge of both wings is then used to set, 0 degree of incidence in both wings. I don't know if I can mention the book by, "Don Ross" on rubber powered planes here but he goes into much theory on this. At this point I need to know about wing tip weight, as no mention is made in the plan to it. Would weight be split between both wings, say about 1/2 oz apiece?