• The Biplane Forum is a large global active community of biplane builders, owners and pilots. From Pitts to Skybolts, to older barnstormers, all types are welcome. In addition to our active community, our content boasts exhaustive technical information which is often sought after for projects and maintenance. This information has accumulated over the 12+ years the forum has been in existence.

    The Biplane Forum is a private community. Subscriptions are only $49.99/year or $6.99/month to gain access to this great community and unmatched source of information not found anywhere else on the web. We are also a great resource for non biplane users, since many GA aircraft are built the same way (fabric and tube construction). Annual membership also comes with two BiplaneForum.com decals.



Wing Spars

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

aerofan

Acrosport 2 Builder
Lifetime Supporter
*
Joined
Aug 31, 2012
Messages
237
Reaction score
203
Location
Ann Arbor, Michigan
Hi,

I'm studying the plans before I start cutting up my spars. This does not make any sense to me. Both the upper and lower wing front spars are 4 1/16" tall at the trailing edge side but they are both different widths with the center line being the same for both. Because of the 9 degree angle for the top and the 3 degree angle on the bottom the upper 1" spar should be slightly taller than the 3/4" lower spar. Am I right about this? The spars I have are exactly 4 1/16".

David
 

Latest posts

Back
Top