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  #11  
Old 04-02-2012, 06:36 PM
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Watching with great interest.

Don
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  #12  
Old 04-02-2012, 09:47 PM
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Gimme gimme gimme! Should look great Dr Laser!
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  #13  
Old 04-03-2012, 04:49 AM
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I am looking forward to this, too. Great model.

Jeff
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  #14  
Old 04-03-2012, 06:55 PM
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Cool! Looking forward to seeing a build on this model as well!

Cheers!
Jim
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  #15  
Old 04-03-2012, 08:28 PM
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Thank you all for your confidence. I hope to meet your expectations.

I start with planning the rigging and determining each line's length of tippet needed. (For more detail on my rigging method, see Rigging Aircraft with Tippet ). I need two 16-inch lengths for the wing landing and flying wires, and two 8-inch wires for the other wing to fuselage rigging. Making the lengths too long is okay - too short is bad.

The top wing is actually three pieces, but I merged them into one part in the computer. I perfer one piece wings when possible - easier, greater precision, and less joint lines. The wing includes a reinforcing strip.
Halberstadt Cl.IV-halb-1.jpg

After punching four holes for the rigging, I then cut out the wing and prep it (score, fold and round the top). Next insert the rigging (definitely need magnification and fine tweezers) and tape it all secure.
Halberstadt Cl.IV-halb-2.jpg

Now I just forgot, I need to cut the slots for the struts in the wing before I glue it up. Next time.
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  #16  
Old 04-04-2012, 07:24 AM
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Superb beginning, John. Looks like this one might be on display at Paper Modelers at Army Heritage Days next month.

Don
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  #17  
Old 04-04-2012, 08:52 AM
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I can't wait to see this one come together. I will never understand how painting wings to mimic a bowl of Easter jelly beans was a good camo strategy, but I guess breaking up the profile is more important than the colors used. Whatever the reason, it sure makes for an attractive and colorful model!
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  #18  
Old 04-05-2012, 08:43 PM
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Okay, in my haste to start I made a big mistake (nothing new to me). I routed the rigging wire right over where I want to slice an opening for the struts. If I did that, I'd cut the wires and the rigging would fail. So I had to strip off the tape, relocate the wiring, and retape it. This figure shown the rework. Notice the slot is exactly where the rigging was.
Halberstadt Cl.IV-halb-3.jpg

So now I can close up the wings. The center section is last so I can add internal splices, as shown below.
Halberstadt Cl.IV-halb-4.jpg

When I glued the wings together, I purposely misaligned the the top and bottom halves, see the picture below. I allowed the top wing to slide over the edge of the bottom wing, more near the wingtip in a linear misalignment from root to tip. Now why would I do that?
Halberstadt Cl.IV-halb-5.jpg

The reason is to thin out the wing cord uniformly to the wingtip. It is a small variation, but allows the wingtip to be glued up much easier without any distorsion. I'll just trim up the wing and it will never be noticed.
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  #19  
Old 04-07-2012, 07:37 AM
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Above when I said I misalign to reduce the chord, I really meant that I reduce the wing thickness to the wing tip. A thinned wing tip is easier to glue together without distorsion.

Now it is a simple process to finish the aerodynamic surfaces.
Halberstadt Cl.IV-halb-7.jpg

More to come.
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  #20  
Old 04-07-2012, 08:19 AM
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Coming along very nicely, John. Wish I understood more about rigging so I could do it the right way.
Looking forward to more.

Joe
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