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Work in Progress
Updated May 04
Updated May 05
Updated May 07
Updated May 08
Never heard of one , either did I until app 9 months ago.
It’s a V tail truss style build on the fuselage and these were never kitted, however plans were available for scratch building.
There are Cottage Industry Kits available today though and I have a set of stabs here to deal with from one of these kits, as they are missing significant Torsional Rigidity, and may fail if they begin to flutter.
Here’s a Link to a May 1977 RC Modeler article for the Cloundbound 4
I will post some pictures here later of the stab set.
It appears the 1/16 by 1/4 spar is basswood, which can be more like a noodle then spruce and with little structure around it I would choose spruce for the spar. The LE and TE are built up “sandwich”, balsa, basswood?, and the diagonal strips are 1/16 x 1/4 balsa, the diagonals where CA’d , matter of fact I believe the entire build was done with thin CA.
May 04
I have one stab on a jig and have measured the deflection. I will use this info later to draw a comparison after I reinforce the stab. The key is I want to be repetitive with this setup, so I have marked some of my pieces.
I have 14G or so of weight and we shall see how this deflects when I beef up the structure.
May 05 ULTRACOTE LITE
Here is the other stab, with the Ultrakote Lite still in place.
I noted the deflection as 7/16″ with the Ultrakote in place
May 07
After sheeting both sides from the rear side of the LE to the center of the spar, as well as adding ribs , 1/16 ” spaced 2 ” apart starting from the inboard end sheet, I believe there were 7 .
Total deflection was 4/16 ”
The deflection of the stab as built and covered was 7/16″
The deflection uncovered and as built was 11/16 ”
The weight was 32.6 G 1.15 OZ
May 08
second stab with underside sheeting in place and I am about to remove strips back to spar center
1/16 spruce ribs in place at 2″ centers
