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-   -   Fuse sides to glue (http://www.rcuniverse.com/forum/scratch-building-aircraft-design-3d-cad-174/11666080-fuse-sides-glue.html)

Heliman4213 06-16-2019 04:08 PM

Fuse sides to glue
 
Starting my Giant Cessna 421C. I know how I would do it but wondering how some of you would glue these pieces together as sen here. I guess I would take 1/64 plywood strip and Hysol or Epoxy over the seem?? Maybe 1 inch overlap on both sides?? What do you guys think??
Thanks

https://cimg8.ibsrv.net/gimg/www.rcu...8fa67cfd96.jpg
https://cimg9.ibsrv.net/gimg/www.rcu...ffefe29f6f.jpg
https://cimg7.ibsrv.net/gimg/www.rcu...bf149d3757.jpg

carlgrover 07-01-2019 04:55 AM

I've never seen construction like that. Very hard to tell from the pics of the plans but every fuse I've ever built there would be a doubler that goes over that joint shown on the plans. Study the plans carefully before gluing. As far as gluing them together, I would just use thick CA for the time being. After you've got the fuse farther along and you can know what else goes in that area, then put down a 1" or so doubler right over the seam but only after making sure nothing else goes there first. I would just use thick CA for the seam as well.

Carl

FlyerInOKC 07-02-2019 05:08 AM

I prefer Titebond II for those type of joints. If there is a doubler when you glue it weight it down until dry.

Skyhawk940 07-02-2019 08:48 AM

When I but join two pieces of wood together and want a very smooth joint, I but the two pieces together tight and use blue masking tape along the joint. Use the tape like a hinge to fold the ends apart and apply glue. Lay the parts flat, tape on bottom. Clean up the glue the squooshed out and apply another strip of tape on this side. Wait till dry, remove tape and your joint will be as smooth as a babies butt. Then put a doubler over the joint, !/8" maybe even 1/4" lite plywood, at least..

dirtdart 07-07-2019 03:56 AM

If I am seeing the picture correctly, those pieces of ply are doubled...two make the thickness? Could be old eyes. If that were the case, they might be staggered, like a half lap splice?

Regardless, totally agree with titebond and a doubler. Your main indicator would be the bulkheads. If there is a doubler there, there ought to be a recess in the bulkhead to fit it. Might help ID the thickness of the doubler as well. I suspect it would be something harder than balsa as well.

dirtdart 07-07-2019 03:59 AM

On a side note, Cape Air used to fly Cessna 421s all the way out in Missouri. They had a Waynesville to St. Louis leg. Since they were single pilot commercial flights, I used to sit next to the pilot flying back and forth. Nice planes those 421s. Once I sat in one that had been used in the TV show "Wings."

alex5 07-12-2019 06:51 PM

1 Attachment(s)
Attachment 2264784

alex5 07-12-2019 07:18 PM

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whiskey29 08-06-2019 07:12 PM

I would use some fast drying glue to tack them, then give a bit doubler with wood glue. 1 inch is plenty IMO,
If anyhting happen to it, it will break at other weaker point.


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