Thread Tools
Nov 04, 2001, 10:37 PM
Registered User
King Kong's Avatar

Shear Web?

I'm building an Explorer 2M. On the plans for the wingsThe Spar stops and the SHear Web starts. It dosn't say how big to cut the strips. It says how thick, and how long, but not how wide. This is stopping me. Please help!
Sign up now
to remove ads between posts
Nov 04, 2001, 11:31 PM
Registered User
Lenny970's Avatar
I can't address the Explorer specifically, but in general, shear webs fit tightly between the top and bottom spars and provide a great deal of strength to the wing. They should be a good fit with no gaps and glued securely. It's usually best to cut them slightly oversize and sand them to fit exactly between the spars. Note that the balsa grain should be vertical. Thickness of the webs near the wing root are often equal to the width of the spars, with the webs getting progressively thinner toward the wing tip.

Good luck,
Nov 05, 2001, 07:27 AM
Registered User
Andy W's Avatar
Although between the top and bottom spar strips is best, many kits have you glue the shear webs to the sides of these stips - you can cut them a little tall, and then sand them flush (making sure not to sand the ribs)..
Nov 05, 2001, 07:42 AM
Registered User
Bill Glover's Avatar
What Andy said, glueing the webs to the front or rear face of the spars is a lot less work and very nearly as good. That's what I've always done with my own designs, never had a wing fail in flight yet!

But Lenny's description is certainly the 'proper' way to do it!

Thread Tools

Similar Threads
Category Thread Thread Starter Forum Replies Last Post
Carbon or balsa shear web for I-beams SkyPyro Composites Fabrication 13 Mar 04, 2009 04:37 PM
depron shear web mr_wood Hand Launch 1 Aug 12, 2005 08:08 PM
What is a shear web? Yardbird The Builders Workshop 42 Feb 22, 2005 10:55 PM
Shear web theory ? FlyByMike Modeling Science 8 Jul 05, 2003 08:08 PM
Shear web question dwood99 The Builders Workshop 15 Apr 23, 2003 06:34 PM