RE: real scale flight
Wow! Lots of posts to read and think about!
Thank you all very much!
For what it is worth I have a target weight of 4.5 lbs. and so far I'm right on.
The span is 93inches and the wing area is conservatively 850 square inches.
From the start I planned to stringer rather than full sheet and finish the entire thing with tissue and dope.
With formed paper wing and tail fillets and engine cowls I am doing my best to build as light as I can.
Might add an inch to the tip cord and take it from 5.5 to 6.5 on the off chance that even this little might help.
Steve