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31

Builders logs / Re: Isotopes LEXL build in MO

« Last post by Isotope on January 09, 2026, 08:04:05 AM »

Ok befor i go and make two left wings i want to clarify that if i were standing behind the airplane and this was the right front wing spar the plywood would go on the front correct? And on the back of the rear spar? Also the strut braces and solid root piece will have double 1/8" ply over them in the front where it calls out in the plans? See attached. Also is there a grain direction i need to worry about with the ply?

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Builders logs / Re: Isotopes LEXL build in MO

« Last post by Kamcoman77 on January 09, 2026, 07:32:52 AM »

Shouldn't be a problem. You can still mount the fittings at 29°

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Builders logs / Re: Isotopes LEXL build in MO

« Last post by Isotope on January 09, 2026, 07:14:13 AM »

How critical is the 29° angle for the strut brace?    Mine came out at about 30~31°. I bought an angle finder for the rest and plan on getting them right on 29°.

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Builders logs / Re: Isotopes LEXL build in MO

« Last post by Kamcoman77 on January 09, 2026, 06:49:32 AM »

Looking good!

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Builders logs / Re: Isotopes LEXL build in MO

« Last post by Isotope on January 08, 2026, 08:07:09 PM »

First spar will be ready for plywood tomorrow. I have worked with alot of epoxy but never t-88. This stuff is great. Long working time and it dosnt run when your turning parts around to apply on multiple surfaces. And cleans up easy enough. Splicing the root filler block was easy and i feel comfortable with it thanks to the input. You guys are more than awesome.

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Builders logs / Re: Isotopes LEXL build in MO

« Last post by Kamcoman77 on January 08, 2026, 08:55:31 AM »

I agree with Chuck. After all, it is covered on both sides with 1/8" plywood.

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Builders logs / Re: Isotopes LEXL build in MO

« Last post by Chuck in Indiana on January 08, 2026, 07:09:04 AM »

I think that would be acceptable.. after all it is a filler block.

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Builders logs / Re: Isotopes LEXL build in MO

« Last post by Isotope on January 08, 2026, 05:40:18 AM »

Welp first major issue with my material. Or material list i used. It called for 5"wide solid for the root and my gap between cap strips is 5 3/8~. This 5x3/4x36 is all i have. I believe i have enough to fill the gap at the bottom side, where it attaches to lower cap strip "short side". If that would even be acceptable adding a 3/8" piece in to fill the gap. Either that or im stuck until i get a wider piece from ac spruce.
 PS. Actually i have enough to scab onto the top spar cap for one spar maybe both. That would be better for more surface area. If i dont have enough that way for both spars i can do one while waiting on ac spruce.

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Builders logs / Re: Isotopes LEXL build in MO

« Last post by Kamcoman77 on January 07, 2026, 09:33:49 PM »

You should be confused! The wing video does not apply to the XL. It is of a Legal Eagle Ultralight wing being built. There is no wing video I have ever seen by Leonard about the XL. I think that video has confused more XL builders than any other. There are many, many differences between the LEU & XL wings. If you want to see some XL videos, look up ADCO Aviation on YouTube. David does a very nice job of showing phases of XL construction. He also states very clearly where he deviated from the plans. ADCO has a build log just below yours. He has a link to the video playlist in that log. Hope this helps!

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Builders logs / Re: Isotopes LEXL build in MO

« Last post by Kamcoman77 on January 07, 2026, 08:55:15 PM »

Solid 3/4" thick filler blocks. There are no 1/4" pieces in the root end. I believe Leonard means there is 1-1/2" spacing between the two ribs at the root end of the wings. That should be 1" between the two root ribs giving a 1-1/2" outside dimension. In the last photo I did not use the metal bracket for diagonal #1. I went with triangular wood & ply bracing to make room for my fuel tank.