Original Posted By: Oscar Zuniga
Howdy again=2C Pieters=3BI've been working on some squawks that came upduring the annual condition inspection on 41CC. Oneitem that has bugged me for awhile has been the tabsor tangs where the wing strut X-brace cables attachat the upper ends. Not that they weren't strong enough=2Cjust that they were showing some corrosion and thestrut attach bolts weren't all the same length and weredrilled shanks with nylon insert lock nuts. So I decided tomake them all undrilled bolts=2C all the same length=2C and Ibought some bent stainless tangs that Aircraft Sprucesells under ultralight aircraft supplies. They are cheap=2Cnice=2C and only require opening up one of the 1/4" holeson each tang to 5/16" to accept the AN5 attach bolts.When I retensioned the brace cables=2C I borrowed asimple tool that my hangar mate has. It's a cabletensiometer that he got from West Marine that they sellfor adjusting tension on standing rigging on sailboats.After tightening up one cable to get the wing square=2C Ithen adjusted the opposing cable to the same tensionand did the other wing the same way. I don't have amusical ear like you guys who tune your cables to amusical note =3Bo) There is no set value for cable tensionthat I've ever seen=2C but if it makes any difference=2C onmy airplane it works out to about 180 lb. of tension onthe 1/8" galvanized 7x19 cables. This is about 10% ofthe rated 1700 lb. minimum breaking strength for 1/8".Oscar ZunigaAir Camper NX41CCSan Antonio=2C TXmailto: taildrags(at)hotmail.comwebsite at http://www.flysquirrel.net________________________________________________________________________________