pariah
Senior Heliman
Location: West Valley City, UT - United States of America
| I'll readily admit that I must be missing something - are you wrapping the (textile) thread around the (metal) threads, and then inserting it, and letting the glue wick into place, or is the (textile) thread only on the outside of the rod?
I recall seeing the thread-wrapping trick on a few airplanes, but that was around a fairly soft wooden rod; not a carbon rod. Wood gives a lot more than carbon does, and it's easy to see how the thread would increase the 'holding power' of a wooden joint.
But carbon is a much stiffer material; the only result I can see wrapping thread around the ends is that it will be more difficult to split the carbon around the (metal) threaded rod. I don't see how wrapping string around the outside can increase the strength of the bond between the carbon and the metal rod.
It seems to me that the linear shear strength would be unchanged; only orthogonal shear strength would be increased, and that's not particularly interesting in a pushrod.
So what am I missing?
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Helicopters & Women: The last thing I want is one whose head has a few loose screws. |
