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21
Double Seaters / Double Eagle: Stab angle of incidence
« Last post by Sylvain on January 04, 2022, 09:00:14 AM »
Hi Guys.
I am now rigging the empennage of my DE.
I did some search on the forum regarding the angle of incidence of the stab. Seems like a -2 degree from leveled fuselage would be adequate.
What angle of incidence was adequate for your plane?
Any comments, opinions or advices are welcome!
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LE / Re: wing rib dimensions
« Last post by wapati-bull on January 03, 2022, 07:55:44 PM »
I built the ribs first. Then the spars to fit the ribs. When make the nose ribs I plan
to have them match up to the spars.
But thanks for the input.
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LE / Re: wing rib dimensions
« Last post by DA Miller on January 03, 2022, 07:44:12 PM »
One more thing and then I'll shut up :o  :o Build your ribs first and then build your front and rear spars to match YOUR ribs
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LE / Re: wing rib dimensions
« Last post by DA Miller on January 03, 2022, 07:38:52 PM »
My old set, and per the forum other older sets, came with several 8 1/2 x 11 sheets and no full siZed rib drawing.  I think I paid $15 for the full sized drawing whose dimensions did not match the plans spar dimensions. Don't forget to check the vertical of the first rib vertical. My advice is to study the plans upside down and sideways before cutting or gluing. People are fond of saying "all the required info is in the plans" but it's not always obvious. I would suggest that before you start on a new segment, you do a search on that segment.  Every possible mistake or misunderstanding has been done before and there is much good info and help from previous builders. Don't give up.  If you have a question just ask. we'
re all here to help :D
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LE / Re: wing rib dimensions
« Last post by Kamcoman77 on January 03, 2022, 07:38:31 PM »
Sounds like you are right on track. If you build your wing ribs and fittings to match your dimensions, everything should fit just fine.
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LE / Re: wing rib dimensions
« Last post by wapati-bull on January 03, 2022, 06:27:46 PM »
Well, actually station 2 and 3 are 29” on center so it would seem that 28 1/4” should put the spars close to 29”O/C. I am not familiar with any other drawings but my hard copy came with a one piece, full sized rib print.
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LE / Re: wing rib dimensions
« Last post by Kamcoman77 on January 03, 2022, 05:06:03 PM »
I just measured my full-size Milholland drawing that came with the plans. It shows 28-1/16" between spars. Evidently, the Iron Design rib and the Milholland rib are not identical
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LE / Re: wing rib dimensions
« Last post by DA Miller on January 03, 2022, 04:57:36 PM »
My full size rib drawing from Leonard was also inaccurate as were many others who received them. Search "rib dimensions" and you will see many references to this.  Some people have had success with matching up the 8 1/2  x  11 sheets that came with the plans.  Others have had good success with the Iron Design drawings.  Since the Legal Eagles are slow (60 mph) there are many rib airfoils that work. The 27 1/2 dimension is important to get the wing attach fittings close to matching the fuselage attach points on the fuselage.  Top of the cabanes sta 2 and 3. The other important dimension is the length of the rib front to back as you are building the rib in your jig. One other gotcha: some builders found that the first vertical on the plans was not 90* with the bottom rib stringer.  Not much but when the rib was mated to the front spar it didn't match up. The good news is everyone finally worked it out. ::)
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LE / Re: wing rib dimensions
« Last post by wapati-bull on January 03, 2022, 04:10:42 PM »
It is 28 3/16”. I have a hard copy directly from Leonard not a down loaded version.
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LE / Re: wing rib dimensions
« Last post by Kamcoman77 on January 03, 2022, 03:15:53 PM »
Very interesting! What is your distance between spars? I'm using the Iron Designs rib drawing. I'll see if I can find one of Leonard's.
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