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Rotor Build Part 2: Pitcheron/Wingeron Hardware Installation
Posted by J.S. Decker on Apr 27, 2008, 15:59

The first major assembly step is to install the pitcheron/wingeron hardware.

Ready to install the blingeron (pitcheron/wingeron drive hardware). I have been using a Liquid Nails adhesive that is similar to Goop, but about half the cost a my local hardware store. I like to use a glue that is not brittle, that has a little flex so the hardware does not 'pop' loose with a less than perfect landing.

  1. Sand the Gluing Surfaces:  Lightly sand the inside of the fuse where the hardware will be glued inside the fuse.  I use a sanding stick built for sanding inside fuses.  I also sand where the fuselage crush blocks and servo trays will be mounted later.  The inside of this fuse is Kevlar and I sand the Kevlar just enough to bring the knap of Kevlar up just a bit.  Wipe out the dust as best you can.

    The sanding stick for sanding in fuses. Made from plywood and foam. I like the foam pad because it conforms to inside contours. I use 120 grit paper.


  2. Trial Assembly:  Put everything together and figure how to hold everything in place and measure alignment before you apply the glue.

    Alignment measuring string attached at the tail with a drop of CA. The masking tape held it in place while the slow CA dried.


    Measuring string used to check alignment. I try to get the measurement within a 1/16 of an inch on both sides.


  3. Glue It In:  Apply the glue to the monoblock, put it in the fuse, wipe off any excess glue that squeezes out, assemble the wing rod, tubes, and wing, and align everything.  Check the alignment a couple times and leave it alone until the glue dries/cures.
All done and drying.


A couple notes on alignment.  Always align the wings to the tail.  The mold for this fuse has a slight bow in the tailboom and the tailboom is too stiff to correct it with the usual tricks, e.g., heating and straightening the bow .  So, I have to put the wings on the front part of the fuse just a little cocked to get the wings to align with the tail.  I donít know that anyone has ever noticed this about my planes, but they might just have good manners and not mention it.  Bottom line for me is that I want the plane to fly straight, and by aligning the wings with the tail the plane flies straight with slight bow in the fuse Ė beats building a new fuselage mold.




Rotor Build Part 1:  Preassembly and Component Weights
Rotor Build Part 2:  Pitcheron/Wingeron Hardware Installation
Rotor Build Part 3:  Fin and Stab Installation
Rotor Build Part 4:  Internal Bits
Rotor Build Part 5:  Conclusion



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