I've done a number of searches and can't find the answer to my question. I know it's in these forums somewhere, but I'm not having any luck.

I need information on basic design ratios.

Example:
for a given cord you need x wingspan

For x number of square inches on the wing you need x on the horizontal stab

For x number of square inches of horizontal stab you need x for the rudder

These basic rules were all spelled out at one time, but I can't find them. There were also some pictures to demonstrate basic design criteria.

Info on biplanes would be particularly helpful.

EXample:
If I have a biplane wing with a 15" cord and 72" span, how many square inches of horizontal stab do I need?

With same wing and stab, how long should the fuselage be?

Rudder area?

Thanks

Andy Lennon had an article in Model Airplane News in the late 90's

Part I Each of these has more than one page

http://findarticles.com/p/articles/m...s_/ai_n8799373

There's a Part II

http://findarticles.com/p/articles/m...g=rbxcra.2.a.1

These will help. Dan.

Two more. Dan.

Thanks guys. Exactly what I needed. [sm=thumbs_up.gif]

Let me add, If your a budding model airplane designer or an old pro. If you don't have the above attachments on your hard disk you need to download and save them. They are the basis for almost every model airplane flying today. Chuck, along with quite a few models back in the 60's compiled the data from good flying model design around the country and came up with these basic design formulas. Get them while you can.