Staaken Z-1 Flitzer (oz4348)


Staaken Z-1 Flitzer (oz4348) by David Boddington from Aviation Modeller International 1997 - plan thumbnail

About this Plan

Staaken Z-1 Flitzer. Scale model for 35 to 48 size engines and four function radio control. Scale is 1/5.

Quote: "Scale model of a semi-scale fullsize biplane for 35 - 48 size engines. Designed by David Boddington, brought to life by Jolyon Bambridge..

We both agree it is a relaxing fun model to fly. Should you build one? If you would like an attractive scale model that you can fit in the boot of the average car ready to fly and enjoy flying, then the Flitzer is well worth the labour you put into it.

Before starting any new model. I discipline myself to cut all the ribs, formers and parts necessary to finish the model. This, I find, helps to keep up the momentum in construction, otherwise, if you are anything like me you will end up with a loft full of part built models. You will note that extensive use has been made of 1/64 in ply, or Micro-ply. Do not be tempted to use ordinary ply in place of the liteply or the 1/64 in laminated formers. With the size and relatively short nose of this model you may well have problems with the C of G. As it was with the prototype, even covered in Solartex and painted it came out perfectly balanced.

The wings. Lay down the front and rear spars and the trailing edge, ready slotted, and add the ribs. Be sure to sand 1/16 in off the bottom of the spars outside the tip rib so as to accommodate the sheeting. Add the blocks to support the rigging fittings. With this done you can add the square leading edge, the riblets and then shape it to accept the ply sheeting on the top surface. With both wings finished I then add the dihedral braces with 3/8in. under each tip.

The lower wings can be constructed similar to the top, bearing in mind that, with the aileron cut-out, the ribs will need to be cut to make the aileron. Also the holes are best cut first in the ribs so as to allow for the operating push rods. Make sure you look carefully at the root ribs which face onto the fuselage so you are thoroughly familiar with the construction.

One weakness which has come to light after the maiden flight is the rear spar of the lower wing where it joins the dihedral brace. On the second flight the landing was less than perfect and the lower wing was pushed back when the model slewed round on its wing tip. All that was noticed at the time was local wrinkling of the covering. Upon examination I found the spar had snapped through the first 3/32 in rib, no doubt caused by the wing being pushed back when it ground looped. Make sure that you choose hard balsa for the rear spar, or spruce. You may find it easier to assemble the lower wings when the fuselage is assembled so as to be sure of the fit; root to fuselage.

Fuselage. First of all build over the plans the basic stringers of 3/16 in sq, building the left side over the right side for accuracy. Add the 3/16 x 3/8 in spruce lower sections and when it is all dry you can add formers 1 to 5. You will note that F2 and F3 have the cabane frame bound and glued to them, so you will have to do all this before you can assemble them into the fuselage sides..."

Direct submission to Outerzone.

Update 26/09/2016: Complete article added, thanks to RFJ.

Supplementary file notes



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Staaken Z-1 Flitzer (oz4348) by David Boddington from Aviation Modeller International 1997 - model pic


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Staaken Z-1 Flitzer (oz4348) by David Boddington from Aviation Modeller International 1997 - pic 003.jpg
Staaken Z-1 Flitzer (oz4348) by David Boddington from Aviation Modeller International 1997 - pic 004.jpg

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