Derek Round
Heliman
Location: Bradford, UK
| Packetstorm......thanks for your constructive comments!
The horn in question had been cut down from those "multi-horns" with six "arms" that are supplied with the servo, to leave an arm on each side. There are a series of flats around the hub of the horn, the marks left after the unrequired horns were removed from the six armed original. So there could easily have been some sort of "stress raiser" left at the root! Only one side was used, and the connector was a specialised one, like a ball end, but where piano wire (epoxied to the carbon push rod) was clamped in it by a screw. Interestingly both the clamping screw, and the two nuts on the other end had been treated with loctite!
And again, thanks for your comments about UV degradation.....the servo is mounted on the boom, just behind the mast, and is fully exposed to light! So maybe thats a factor as well?
I do remember being told years ago, that with an old nylon prop, it was a good idea to boil it in water for some time, to reduce the possibility of brittle fracture....it had not occurred to me that it might be worthwhile to do it to to servo horns.
Once again Packetstorm, thanks for those enlightening comments!
And any more comments out there?
Derek |
