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#31
02-06-2011, 06:40 PM
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Quote:
Negative Ron, all the spars including the rear are in the vertical as I explained in my log. No piece is missing. The sequence of assembly is different. I did study your previous log on pages 25-27 and beyond. I think the differences in the build sequence are simply choices we made. There will be that inevitable variable as each builder may choose a different sequence. I think the final products are similar though. I did pick up a couple of good techniques you demonstrated with your build. On On. Isaac 
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#32
02-06-2011, 07:02 PM
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Isaac,
The recommendations are only that. You can build it any way you want or feel comfortable with. Different modelers have different techniques. The recommendations are what I've found give the best result. I wanted to emphasize to any modeler who builds this be aware of the pitfalls that can happen. Shortcuts on this model are few. Most of the shortcuts have been designed into model.....Ron
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#33
02-07-2011, 06:51 PM
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Wings structure
Started on the wing spars. Cut out all the ribs, spars and especially of interest is the wing box that connects the outer spar to the fuselage spar. Very clever design.
No building log today, just a couple of pics. Cheers Isaac
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#34
02-07-2011, 07:23 PM
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Isaac,
I had to design the wing box to enable the complete wing assy to be installed to the fuselage in one operation. Originally the design had an outer and inner wing sections constructed and then butt glued together. As any modeler knows this will not produce a strong joint especially for a large area. It is equally hard to get the outer and inner wing sections to match in the seam area between the sections. It is now designed so the wing box will slide into the wing spar protrusion from former F. When constructing the wing box make sure the space between F1 & F2 is gaped the same thickness as the as the wing spar protrusion. Try to keep any glue from getting into the gap between F1 & F2 when constructing the wing box. When the wing box is constructed check to make sure that it will slide over the spar on the fuselage with no binding. It can then be installed into it's location in the inner wing section.......Ron
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#35
02-07-2011, 07:35 PM
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I think that the wing assy with the box and spars on this, is one of the best in design and of the sturdiest structures i have seen on this aircraft model type - you just know that those wings will stay where you place them, and will NEVER droop. IMHO. Regards. Pete.
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#36
02-07-2011, 10:19 PM
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More wings of progress
I completed the wing spars and the box assembly, careful not to get any glue in it. I dry fit it and it slides with just a bit of friction. I do like this design very much. It is strong and simple and should go well inside the wing skins.
I started gluing the outer wing halves along the leading edge. I also assembled the inner wing and it is all being dry fit . Once all the wing pieces are done and fitted, I will complete each wing half assembly and then glue to the fuselage. Pictures later. A bit too late now. Cheers Isaac
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#38
02-08-2011, 06:31 PM
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Wing spars continued
At first look, the spars and the ribs are conventional. However, what makes this different is the box beam design that will ultimately connect the spar and outer wing to the fuselage. Basically it is a box over a bayonet design that allows for a sliding fit. Another possible use for those that may wish it, is for removable wings if you want either storage or transport in the future. You will need to do a good job with the fillets though for that one ( which is outside of the scope of this build ).
After cutting the pieces, assemble the wing box former F1 and F2 to the lower and upper strips that will form a box with the center clear to allow for the fuselage former F to slip into the box. I then glued the landing gear support half rib as marked and reinforced it with the corner pieces SR. Then the full rib W with its reinforced pieces BB. Still missing, but will go on soon, are the hollow tubes that will form the landing gear struts “anchors”. That will be constructed and glued to the half ribs as I dry fit and locate that feature on part 38 ( inner wing skin )   The main spar is a conventional former ( part Q ) and the 3 ribs W ( again ) V and Y at the tip.    Rib U is glued to the fuselage former F and will be the receiver shape for the wing inner skins ( part 38 ).     I decided not to fully glue the inner and outer spars yet, until I get the wing skins ( part 44 ) constructed.   Isaac
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#39
02-08-2011, 11:11 PM
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Isaac,
The gusset parts and the upper and lower box beam parts were not meant to be backed with cardboard. The only parts that need backing are in the designated area outlined and have two ** on them. You may have a problem in the seam area between inner and outer wing sections. Also be sure to include the strips on the upper and lower areas on the main wing spars creating an "I" beam like on the horizontal stab spar....Ron
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#40
02-09-2011, 05:57 AM
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Ron I realized after assembly that the upper and lower box beam need not be backed up with cardboard. I will also attach the strips over the spars and ribs as well. Still working the landing gear struts and their reciever tube attached to the wing. Once I got all those pieces, I will join all the wing skins to form a left and a right wing. A dry fit so far shows good fit. Thanks Isaac
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