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Compression struts fitted...
The compression struts came from material in the 'bargain bundle' box from ASS. I ripped to 13/16 x 13/16 then planed down to 3/4 using the bench planer. If using a bench planer, leave the pieces over size in length, because the planer will leave a snipe [slight dip]on each end which you can then cut-off. The struts were glued in place on center line with a nail gun and nailing blocks which I removed afterwards.
'drag wire blocks were then glued into place. I am using 'full' blocks like on the upper wing, I think this better, because the wires being pulled either side of a block will be pulling 'into' each other.
Drilling for the wires was a much more easier affair than on the first wing. Firstly, I already had the drill jig made and ready to go. Secondly, I now knew the optimum sequence of 'over and under' of the wires. The sequence requires that an 'over' wire be in the vicinity of the bellcrank area. I have seen posts around the web from builders who got into a clashing problem having an 'under' wire near the bellcrank/pushrod. Wires were drilled out for 3/16, then reamed out to 7/32 to allow for the epoxy primer thicknesson the wires.
Setting the blocks...
Drag wire dry fit...
Compression struts fitted...
The compression struts came from material in the 'bargain bundle' box from ASS. I ripped to 13/16 x 13/16 then planed down to 3/4 using the bench planer. If using a bench planer, leave the pieces over size in length, because the planer will leave a snipe [slight dip]on each end which you can then cut-off. The struts were glued in place on center line with a nail gun and nailing blocks which I removed afterwards.
'drag wire blocks were then glued into place. I am using 'full' blocks like on the upper wing, I think this better, because the wires being pulled either side of a block will be pulling 'into' each other.
Drilling for the wires was a much more easier affair than on the first wing. Firstly, I already had the drill jig made and ready to go. Secondly, I now knew the optimum sequence of 'over and under' of the wires. The sequence requires that an 'over' wire be in the vicinity of the bellcrank area. I have seen posts around the web from builders who got into a clashing problem having an 'under' wire near the bellcrank/pushrod. Wires were drilled out for 3/16, then reamed out to 7/32 to allow for the epoxy primer thicknesson the wires.
Setting the blocks...
Drag wire dry fit...