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Author Topic: Tail ribs  (Read 4310 times)

Offline Flyguyeddy

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Tail ribs
« on: April 07, 2020, 04:49:16 PM »
Im struggling with the tail section, and was hoping those of you who have built the aluminum ribs could help. 

Did anyone cope the rib to sit against the tube?   How did you deal with where two ribs (or 3) converge under one gusset?  Just leave them full width and spaced apart or bevel them to nest against the one next to it? 

I assume a coped rib would be the strongest but i imagine i could be overthinking it, as i am want to do.
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Offline Steve

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Re: Tail ribs
« Reply #1 on: April 07, 2020, 05:24:20 PM »
Quote from: Flyguyeddy on April 07, 2020, 04:49:16 PM
Im struggling with the tail section, and was hoping those of you who have built the aluminum ribs could help. 

Did anyone cope the rib to sit against the tube?  How did you deal with where two ribs (or 3) converge under one gusset?  Just leave them full width and spaced apart or bevel them to nest against the one next to it? 

I assume a coped rib would be the strongest but i imagine i could be overthinking it, as i am want to do.


http://www.angoraaffaire.com/leu/empennage.htm

Mike in Wisc has a Vid on the empennage mixed in with his fus build vids on youtube
https://www.youtube.com/channel/UCHLgOWzjJXe-mMVGMkSY4uw

The ribs made from sheet material were formed with a box brake... 3/8" flanges turned down, coped between tubes...

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Offline Flyguyeddy

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Re: Tail ribs
« Reply #2 on: April 07, 2020, 05:31:15 PM »
Im not terribly sure if that graphic applies to the ribs
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Offline Kamcoman77

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Re: Tail ribs
« Reply #3 on: April 07, 2020, 11:10:29 PM »
Perhaps this will help.
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Offline Vince Carucci

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Re: Tail ribs
« Reply #4 on: April 09, 2020, 04:24:57 AM »
Coped everything for best fit.
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Offline ParQld

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Re: Tail ribs
« Reply #5 on: April 10, 2020, 02:54:15 AM »
Looks Good Vince, what rivets did you use ?
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Online jrbirdman47

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Re: Tail ribs
« Reply #6 on: April 10, 2020, 03:24:18 AM »
Thanks, Vince! Constantly raising the bar for us! :))
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Offline Flyguyeddy

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Re: Tail ribs
« Reply #7 on: April 10, 2020, 04:11:12 AM »
I purchased rivets from fastenal, the ones outlined in a video by mike on youtube ‘leagleeaglebuild’
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Offline Vince Carucci

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Re: Tail ribs
« Reply #8 on: April 10, 2020, 04:21:28 AM »

97447A010


MCMaster-Carr: a box of 250 cost $8.40 US.
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Offline Flyguyeddy

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Re: Tail ribs
« Reply #9 on: April 10, 2020, 04:43:35 AM »
Quote from: Vince Carucci on April 10, 2020, 04:21:28 AM

97447A010


MCMaster-Carr: a box of 250 cost $8.40 US.

Arent they supposed to be stainless?
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Offline Vince Carucci

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Re: Tail ribs
« Reply #10 on: April 10, 2020, 05:03:24 AM »
Can't imagine why. Aluminum is lighter.
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Offline Tom XL-7

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Re: Tail ribs
« Reply #11 on: April 10, 2020, 06:32:51 AM »
Drawing calls out stainless steel coated with zinc paint to prevent galvanic action. Steel for strength. Not sure which concerns me more. Strength or galvanic action. I believe Leonard puts wet paint in the hole and possibly on the bottom of the rivet and then pulls it. If it is dry it won't react
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Offline Flyguyeddy

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Re: Tail ribs
« Reply #12 on: April 10, 2020, 07:15:09 AM »
Sonex uses stainless pull rivets exclusively in their aluminum airplanes.  I see no need for all the extra painting. 
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