Go Back  RCU Forums > RC Airplanes > Scratch Building, Aircraft Design, 3D/CAD
Reload this Page >

Making an Eppler 423 airfoil out of fanfold

Scratch Building, Aircraft Design, 3D/CAD If you are starting/building a project from scratch or want to discuss design, CAD or even share 3D design images this is the place. Q&A's.

Making an Eppler 423 airfoil out of fanfold

Old 09-29-2007, 07:44 PM
Senior Member
Thread Starter
My Feedback: (1)
Join Date: Nov 2004
Location: Shorewood, IL
Posts: 566
Likes: 0
Received 0 Likes on 0 Posts
Default Making an Eppler 423 airfoil out of fanfold

Hey guys. I'm using the foamfly.com wing jig, but I want to use my own airfoil, an Eppler 423. Heres the picture...


Do I just cut the airfoil flat at the "0" line, or connect the leading to the trailing edge and use that as the flat bottom of the template? This is a little different since this is a fanfold wing instead of a foam core.

The bottom of the template has to be flat to use the jig. So I can only use the top of the airfoil, and not the bottom. How can I make this work?

For those not familiar, the thin piece of 1/4" foam has to be formed over the template, and then the whole assembly baked in the oven to harden the foam.

Old 09-29-2007, 08:52 PM
Tall Paul
Senior Member
Join Date: Jun 2002
Location: Palmdale, CA
Posts: 5,211
Likes: 0
Received 1 Like on 1 Post
Default RE: Making an Eppler 423 airfoil out of fanfold

Looking at the jig on their site, I'd say make up a lower fixture that has the lower airfoil surface as the top.
The lower surface of the fanfold material rests on this.
And due to the shape of the 423, you'll probably need some ribs to have the upper fanfold material maintain the upper surface shape.

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Thread Tools
Search this Thread

Contact Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service - Do Not Sell My Personal Information -

Copyright 2021 MH Sub I, LLC dba Internet Brands. All rights reserved. Use of this site indicates your consent to the Terms of Use.