: New Product
Bowker Aero Models 18" yak 54 short kits(UMX replacementairframe)
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Oct 06, 2011
, 12:56 PM
RC Bum 4 Hire
United States, NM, Albuquerque
Joined May 2004
The construction of the airframe is very easy and just like building a larger foamie.
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all parts come "in the sheet" to prevent damage during shipping.
Close up's. Wing and wheel pants(please note program has been changed to cut one left and one right wheel pant.)
Fuse, as you can see all the hinge's come pre-beveled for you
Elevator and aileron spades
Cutting template for using micro 4site motor's
unbuilt foam parts on the scale
This is where the fun starts. To relieve hing tension cut all the control surfaces free from the model as shown.
small apro 3/4" strips of bledrum are added, I ended up needed a 3rd piece in the middle.
The control surface is then attached to the flying surface with a hair line gap between them. This again is to relieve hing tension. Two pieces of hinge tape are also installed on the bottom side of the hinge.
I use thick CA to glue the rear shockie to the wing.
I always check alignment before using activator.
The bottom of the fuse is glues on again with CA, here I am using a building square to check the model before using activator.
Next I install the first wing strut, This is made out of the .033 carbon rod supplied. I sharpen the rod to a dull point before piercing the foam. The first rod is glued in and set with activator before continuing.
Next I install the remaining three wing struts and glue and set with kicker at the same time.
Langing gear doublers are installed over the pre-cut square for alignment.
you can see here the placement of the LG struts in the doublers. The LG is once again made from the supplied .033 rod.
Next I run the fuse bracing back, This is all made from the .033 rod EXCEPT the two pieces going to the horizontal stab. They are cut from the .022 rod supplied in the kit.
Next I install the lower half of the sfg on each side.
I find its easiest to assemble the spades before installing them on the model. The skinny side of the pylon goes down ;)
I always used skids made from music wire attached with heatshrink to save weight.
The wheel pants are installed with a drop of thick CA on the back.
Top half of the sfg's are installed.
Before glueing the top of the model on I recommend installed the brick. More to come on radio gear installation.
empty airframe weight, 12.3g not to shabby ;) This airframe should easily finish out to be a 1.1oz plane.
look at the under side..
Last edited by ChrisBowker; Oct 06, 2011 at