extra gone bipe

[rotccapt]

yes and yes. the new wings will have a much smaller cord than the original wing so to deal with the gap i decided to build my new wings the same way the old wing was built by building filler block that is built onto the new wings so that the new wings will be mounting the same way the old one did. and yes i did set the new wing to 0* incidence. you can see this filler block in my drawings the formers for it and the side for the box is at the bottom of the drawing.

[Dewayne Vaughn]

Subscribed.
new wings are 784 sq, but the old wing was only 592sq.

Why such a large increase in area?

Just trying to understand your process.

[Dewayne Vaughn]

Almost forgot, how did you come up with your rib shape, and what is the thickness of it?
Is it from the kit or did you get it somewhere else?

[rotccapt]

my biggest reason for the larger wing area was to make the plane more square to the fuse length and not have a very short cord. my rib template is actually a slightly modified selig air foil that i got from a program that plots air foils. the thickness is about 15% i think

[Dewayne Vaughn]

hey thanks!!

I think 15% is about right, and selig's are great!! Do you think the long wings will decrease your roll rate too much?
Also, you might think about increasing your rudder size to help dampen the dutch roll you'll probably get with the long wings.
The reason I'm asking all these questions is that I'm working on something similar and I'd kinda like to know how you reached your conclusions... it may help me with mine!
I know some of the guys at baxter, the're a good bunch.

[rotccapt]

where do you fly at i fly pribaraly at baxter

[Dewayne Vaughn]

I've been a Southside flyer ever since they came to Baxter and invited me about 26 years ago...

Jerry ( your current president ) is one he!! of a good guy and good for your club too.

I'm gonna try to make your club metting Thursday.

[rotccapt]

i would like to go too but uncle sam says i have to work 12 hour shifts. well i e-mailed the dxf file to my friend to cut the ribs for me so work should start in a couple weeks

[Dewayne Vaughn]

lol... I used to have the same uncle, he was a real ass like that sometimes....

[Craigsc5]

[rotccapt]

sorry still waiting on my ribs from my friend he has another project going on on his cnc so mine will have to wait

[Craigsc5]

I was hoping to watch your biplane come to life on this thread and maybe learn from your formula. But I did not want to wait for your friend to cut ribs so I have proceeded with my biplane project, all scratch built 64" wingspan. I started it about the same time as this thread. I hope you will continue with the effort.

[Dewayne Vaughn]

Craig forgot to mention that it's just over 6 pounds as you see it.
Will fly with an 180fs.

Should be two of them at the Joe Nall this year....

Jon, the offer still stands for you to come visit on 'hobbyshop saturday' if you can get free.

[rotccapt]

i will finish the project but life has been hectic lately and money tite so it may have to wait till january

[Dewayne Vaughn]

Hi Jon, just wondering out loud here.....
What is your thinking about where to set the wings on your bipe? Will you use the original CG and place the wings CG to match it or are you thinking something else?
Craigs staggerwing is taken from an old stick sport plane called a hooker ( rcm plans ).
The wings have a 23 degree negative stagger and to place the wings on the fuse we simply looked at each wings balance point, drew a line between them, and made that line match the original balance point of the airplane.
is that how you're setting your wings, or are you using a different approach?
Please share.
dewayne