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My OTW has finished being restored. There is a problem with the rigging in that the restoration AP IA has said it has been done according to the manual and set at nominal. Another AP said the rigging is to loose and not acceptable. Any advice/assistance would be appreciated.
Jeff, glad to hear the Restoration is complete. If the rigging was done according to the manual, that is, it has the correct dihedral in the upper wing and all the control surfaces are set per the manual the only thing left is to make sure all wires are properly tightened and go fly it to see how it worked out. May need to adjust the trailing edge of a lower wing up or down to correct any tendency to roll. As far as how tight the wires should be…that’s not in the book. I can pluck the wires and tell you if they are right or not but that just comes from plucking a lot of wires and knowing how they are supposed to sound!!! The landing wires set the dihedral so adjust those first to get the 4-4 1/2” space between the top edges of the center section and a string drawn tight between the tips of the main spar in the upper wing. Once the dihedral is set, tighten up the flying wires. Here is where the ear comes in handy. The middle of the wires should not move much more than 3/8” or so. Pluck each one to get the same note. As you tighten the flying wires the landing wire note will go down. Just make them all tight and the same note, then install the steel sleeve on the #2 flying wire on each side where the #1 landing wire almost touches it. Install the javelin and go fly. Make sure the wires on the center section are tight. They won’t move very much at all when properly tight. Don’t forget the wires under the tail. I hope this helps. Call me if you are still having troubles with the rigging. 864-353-7440
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