Framing up the wing

[DesertBearhawk]

Guys, I'm about to put the spars in the fixture and start framing up the wing. Is there any processes I should accomplish on the spars before I lock them in the fixture? Holes that should be drilled, attach the pocket ribs, anything???? Thanks!

[KyBearhawk]

Have you read about the fact that technically using a plumb bob to align the wing attachment bolt holes between the main and rear spar is not how they should be aligned according to what I have read. Do you plan on using this method?

[DesertBearhawk]

I have not heard that and I do plan to use a plumb bob....

[Barry]

Can't wait to see the wings go together for you Dave, I hope to be at that stage by this Fall. I will await the Youtube vids!! Good work.

[DRLPatrol]

Have you read about the fact that technically using a plumb bob to align the wing attachment bolt holes between the main and rear spar is not how they should be aligned according to what I have read. Do you plan on using this method?

Can you elaborate about that. I have not started cutting metal yet, but studying the patrol drawings I don't see how the 2 attach bolts could be co-axial or go through the spars at 90*.
Doug

[mswain]

Wayne did a nice write-up on the offset issue. http://www.mykitlog.com/users/displa...g=36225&row=38

[DRLPatrol]

Thanks, I had not read his MyKitLog. That is just the way I was measuring it. I agree with the offset but what about the Patrol book suggest using a 1/4" x 3' rod to line up the front and rear attach fittings when welding on the fuselage. That would mean they are co-axial and they are not, the way I see it.
Doug

P.S. I have not seen 4 place plans, so I don't know if they are the same as Patrol.

[mswain]

Thanks, I had not read his MyKitLog. That is just the way I was measuring it. I agree with the offset but what about the Patrol book suggest using a 1/4" x 3' rod to line up the front and rear attach fittings when welding on the fuselage. That would mean they are co-axial and they are not, the way I see it.
Doug

P.S. I have not seen 4 place plans, so I don't know if they are the same as Patrol.

You could drill you a jig off of the wings you make in lieu of using a rod? Another builder I know locally actually tacked the fittings to the fuselage while they were bolted to the wing and the wing was in proper position.

I am using a piece of square bar stock to set the distance and offset in my wing jig, this can be used later to set the attach fittings also.

[dedgemon]

The Patrol spar holes are definitely not co-axial. I don't remember the offset since I'm not near my plans, but its on the order of 1/2" or a bit less. I plan to build a jig that fits the wings and use that to tack up the fittings. We'll see. Not quite there yet.

Honestly you probably could drill them straight since the angle is small, but I don't see any good reason too.

[DRLPatrol]

Thanks guys, I kept thinking I was missing something. No matter how I figured it I came up something like 1.8* angle of incidence. Close to the spec of 2* but the bolts were definitely not co-axial. Bottom line I don't know about the rod through the fittings but everything else works.
Doug