Author Topic: Rib/gusset/doubler clarification  (Read 5946 times)

Offline Tailwinder

  • Newbie
  • *
  • Posts: 2
  • Total likes: 2
  • New Member
  • OS:
  • Windows NT 10.0 Windows NT 10.0
  • Browser:
  • Chrome 151.0.0.0 Chrome 151.0.0.0
Rib/gusset/doubler clarification
« on: August 22, 2026, 05:13:59 PM »
New LEXL builder and making ribs.  Most are done, but 7, 12 and 13 yet to do.  Using the Iron Design plans supplement.  Looked through earlier posts but still unclear on a few things.  Have the A1 doublers as shown on the Iron Design been eliminated/changed, or where do they go?  What I have come up with is rib #7 has a 1/4" on root side and .8 mm on tip side.  Rib #12 has 1/16" on root side and .8 mm on tip side.  Not sure what is on rib #13.  Can someone confirm and/or fill in what I'm missing.  Thanks.


Offline Kamcoman77

  • Donor 2026
  • *
  • Posts: 678
  • Total likes: 550
  • Building LE-XL H-51
  • OS:
  • Windows NT 10.0 Windows NT 10.0
  • Browser:
  • Chrome 151.0.0.0 Chrome 151.0.0.0
Re: Rib/gusset/doubler clarification
« Reply #1 on: August 22, 2026, 09:36:31 PM »
I am also using the I.D. drawings. A1 does not go anywhere. Cut it up and use the ply for something else. Your rib #7 & #12 sound good. #13 usually has 1/16" on root side and some people put 0.8mm on the tip, some don't use any doubler on the tip side. I cut slots for the aileron hinge blocks in the doublers for #12 & #13.

Offline Tailwinder

  • Newbie
  • *
  • Posts: 2
  • Total likes: 2
  • New Member
  • OS:
  • Windows NT 10.0 Windows NT 10.0
  • Browser:
  • Chrome 151.0.0.0 Chrome 151.0.0.0
Re: Rib/gusset/doubler clarification
« Reply #2 on: August 23, 2026, 06:57:41 AM »
Now I got it.  Thanks so much.

Offline scottiniowa

  • Hero Member
  • *****
  • Posts: 503
  • Total likes: 117
  • Scott-In-Iowa
  • OS:
  • Windows NT 10.0 Windows NT 10.0
  • Browser:
  • Chrome 147.0.0.0 Chrome 147.0.0.0
    • Display of helpful hits and tricks
  • Eagle Type: Legal E- XL
Re: Rib/gusset/doubler clarification
« Reply #3 on: Today at 03:54:49 AM »
AS most of you know, I have been vacant for sometime, deep into another CAD project. But looks like this got resolved and also looks like excellent work. 

Unfortunately sometimes when I strive for clarification, it inevitably creates some confusion in other areas. This certainly might be the case,  not an excuse. Sorry.
best email address:  irondesignairparts@gmail.com