Question about how elevator is built

[mhorowit]

Attached is a pic from the parts manual.
Does anyone know it that's a 45^ mitre joint?
How is the tip formed and welded to the long piece? - MIke

[Guest]

Re: Question about how elevator is built

Attached is a pic from the parts manual.
Does anyone know it that's a 45^ mitre joint?
How is the tip formed and welded to the long piece? - MIke

Milke,

No, not a 45, I recall it is not 45 rather a 90 degree fillet (butt) with a triangular gusset.

Dave.

[Robert Lees]

Re: Question about how elevator is built

Mike: some photos that might help.

http://www.taylorcraft.org.uk/elevator-trimtab-cutout-correct1.jpg

http://www.taylorcraft.org.uk/elevator-trimtab-cutout-correct2.jpg

http://www.taylorcraft.org.uk/spraying-parts3.jpg

[mhorowit]

Re: Question about how elevator is built

Wow. That's radically different from the blueprint; of course we're talking diff. a/c, but I'd think the basic design would carry over. - Mike

[mhorowit]

Re: Question about how elevator is built

Wow. That's radically different from the blueprint; of course we're talking diff. a/c, but I'd think the basic design would carry over. - Mike

Wait a sec. You slipped a ringer in there! that's a rudder! No problem, just had problems matching the last pic to the blueprint for a horizontal stab. For what I'm doing at the moment, all I'm looking for is an excuse to do a bend, several welds, show it to a welding guru, then cover it.

the question still stands, in my initial post I asked how the ends terminated without leaving the end of the tube exposed like this: - MIke

[Robert Lees]

Re: Question about how elevator is built

No rudders in those three photos, Mike, the last one's a stabilisor, but the general principles are the same.

Also, which ends of which tubes are exposed?

[mhorowit]

Re: Question about how elevator is built

Also, which ends of which tubes are exposed?

Rob - if you're not tired of this thread already, I am still unsure of the joints. Let me try again. Please see my original picture.

1. I asked if one of the joints was a 45^ mitre. Drude replied he recalled it was a filleted joint, meaning a bead was simply run around where the two tubes joined (this is all round tubing, correct?). If that's the case, then one of the tubes has an exposed open end. That's the first open end. And I'm sure they didn't leave it open for a variety of reasons, one of which would be the difficulty of rolling fabric over a shart edge.

2. Where the trailing edge meets the leading edge: what kind of joint is used there? The blueprints on the website unfortunately leave out a picture of the leading edge member.

- Mike (off to bend some metal)

[Don Eide]

Re: Question about how elevator is built

Mike,

This is how my Taylorcraft elevator is built.
The trailing edge is 3/8 x .028 round steel and is welded to the second
rib (which is "U" shaped) from the tip and it is NOT a 45 degree weld. The tubing is open on the end. It will be covered up with fabric. (Looks like Robert Lees #2 photo)
The outside tip of the trailing edge (3/8 tube) is butt welded to the leading edge which is 7/8 steel tubing. The 3/8 tube can be bent cold to form the round tip.

Hope this helps,

Don

[mhorowit]

Re: Question about how elevator is built

Mike,

This is how my Taylorcraft elevator is built.
The trailing edge is 3/8 x .028 round steel and is welded to the second
rib (which is "U" shaped) from the tip and it is NOT a 45 degree weld. The tubing is open on the end. It will be covered up with fabric. (Looks like Robert Lees #2 photo)
The outside tip of the trailing edge (3/8 tube) is butt welded to the leading edge which is 7/8 steel tubing. The 3/8 tube can be bent cold to form the round tip.

Hope this helps,

Don

Don - Please see attachment. Then you are saying that if I look at the tube in the direction of the black arrow, I'll see an open tube. That means that the end of the tube (red arrow) is a sharp edge, right? - Mike

[Don Eide]

Re: Question about how elevator is built

Mike,

You have it correct.

Then before I paint the primer on I take a small file and dress down the sharp edge. Then cover the edge with anti-chafe tape. Then you can cover the edge with the bottom fabric, again with the top fabric, and probably a couple more times with the tape as you go around the corner. It would then be covered 5 times. Works for me.
Hope this helps.

Don

[mhorowit]

Re: Question about how elevator is built

Mike,

You have it correct
Hope this helps.

Don

OK - thanks - MIke