hi ladies and gents !,
been lurking for a while and thought i'd come out of the weeds, of course, with a question. first a little historyto my intro......
i flew rcbriefly about 40 years ago and u-control before that for several years. i had a freind at the time who's dad flew and had a basement full of planes. it was my favorite place to be ,back then. one day he gave me a falcon 56 that he didn't fly any more and that was the start of my ******** as a kid. i found a used orbital 4-channel( remeber those little black boxes?!)and he helped me set it all up. well, it flew just fine, but it was a good thing the pilot was a talented kid, because i rebuilt that wing several times over about 5 years of "flying"! ......
i never lost my intrestin planes in general, but i never really kept up on what's going on in rc either.... boy has it changed from the late 60's!! .afterrecently retiring from a carrerin carpentry, iattended a fly-in at the local small airport . the local rc club was there and it fired up my desire to get back into flying, now that i have all this time on my hands. next thing i know i bought a futaba 6ex and a small pile of balsa. i downloaded a print of "sumpin else" ( love the pylon planes for looks) and ran off to kinkos to blow it up to 40-50 size ( 56.5" W.S / 49" fuse). a few mods to thin the fuse out a bit, reduceit's profile height(752% expansion made the fuse look just a bit too tall for it's length),fatten upthe airfoila bit so it flies better at slower speedsand re-locate the wing to shoulder height...in all a pylon looking mid-star 40 typewith a t-tail.afew weeks of cutting and sanding and the airframe is done, basically ready tocover at this time.if i could post pics i'd take some and show you guys, it's actually a pretty neat looking plane.
havingdealt with blueprints my entire life, there were no problems building the plane and after a lifetime of building just about anything you might imagine out of wood and or steel ( i am lso a certified welder) there's not much drawn on paperthat i can't figure out. i made all the necessaryadditions of material size and parts, if anything, i'm currently thinking i might have gone a bitheavy onthe wing....spars( 5/16"s x 1/2" spruce full span), sheeting, (3/32" D-tube/ LE shaped fron 5/8 sqaure light balsaand 3/32"x3" hollow), the wing is definatly stiff!....but if it proves to be too sluggish, i'll just build a new, lighter wing. i haven't weighed it, yet. but it seems like when youfirst pick it up it's light, but then, the more you hold it, the heavier it seems to be....only time will tell i guess.i didbuild a wing jig, so it doesn't takelong toput together a wing.
this great site has helped allot as well. everytime i had a question i was lucky enought to find an answer by searching the scratchbuilding threads.
that pretty much brings me up to the current state of my" re-introduction" into rc flying. i have already made arrangements with the local club to buddy box my first few flights, so this spring's gonna be fun!
now for the question.......
the print states 0/0 incedence and offset for the .015 size racingairframe. i've already built 3 down and 2 right into the firewall as the wing is now muchhigher than the thrust line and the plane will be doing more than just left turns, so i think i'm ok there. but what about the incedence?.... do you think i might want to change that because of the expotential increase in weight as the plane gets considerably bigger. wing is basic flat bottomed and tail is trussed flat slab. both essentially identicle to the plan, just bigger with a bit more airfoil thickness than the expanded profile.
i realize that i essentially built a completely different plane than the original design would yeald, but that's the fun of this hobby, and if it doesn't fly, oh well, build something else!!
thanks for taking th time to read this and i surely will appreciate any comments and advice.
ron