How to Build an OT R/C-Model

Building Tips and Tricks

by Tandy Walker

Layout and SAM Site Integration and Editing by Web Master Ned Nevels

(material provided by builder Tandy Walker)

 

Here are some construction shots during the left wing tip panel assembly. This represents the construction sequence using laminated wing tips as well.


Being retired, you would think that I would have had plenty of time to finish this Class A Bomber project by now. It seems, however, this is not the case! I have had so many interruptions lately (some self imposed, some required, and some unexpected) that I am not making much headway on my building schedule at all. I said after I retired from a cost and schedule driven engineering career, that I was not going to work to any kind of a schedule ever again. It is becoming obvious to me now why some kind of a schedule is important. If you don't have one, you find that you don't ever get anywhere! At any rate, I have finally managed to complete covering the 415 sq. in. wing of the Class A Bomber. I used UltraCote Lite transparent red with transparent yellow inserts. 1/4" black stripes are used to highlight the red to yellow to red transitions. You may recognize this color scheme used by my my friend Ray Matthews on all of his Fubar free flights.

(1) The first picture below is a recap of the detailed wing structure I last reported to you on.
(2) The second picture, taken essentially from the prospective, shows the covered wing.
(3) The third picture is a good planform shot of the covered wing. Note the small number "39" out on the right wing tip. This is channel number of the radio frequency used in this aircraft.
(4) I included the fourth picture to show the changing spanwise shear web pattern of both the front and rear spars.

Now, once again I have to stop modeling for a while and perform some everyday tasks such as change oil and grease my mini van, redo the packing in some of the outside faucets which spray all over you when you turn them on , pick up a tree pole saw and trim the spring "suckers" sprouting from our trees, and set up my new colored printer that I go for Christmas for pity sakes!

I will report again when I manage to get back to working on the Bomber.

I have finally finished the second silk covering on the fuselage, fin, rudder, and sub rudder of the Class A Bomber as shown in the first picture below. Don't let anybody kid you, the second silk covering is more difficult than the first to get on with the grain straight and no bubbles between the two layers. I have put two coats of nitrate dope on the second silk covering so far.

The second picture shows the two centering pins used to alignment the sub rudder along the bottom edge of the longeron on the fuselage. The third picture shows the sub rudder installation. Notice that the fin and rudder have been clamped to align the rudder to the fin. The the sub rudder is epoxied in place over the centering pins and also hinged to the rudder to insure alignment while the epoxy is drying.

 

I decided to go on and send these two last pictures in this dihedral joint series. The first picture shows the four large triangular 3/32" balsa gussets on either side of the dihedral rib, two at the front to brace the L.E. and two at the back to brace the T.E. The second picture shows essentially the same thing, except the two small anti flutter braces have been added to complete the set.

   
   
   
   

 

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