If I read Mark's previous e-mail
correctly the bolts were tracy's suggested fix.
That is for Mark's 20B three rotor. Jet nuts (all steel self locking would be
fine) but I would avoid nylocks for this job. If your rivets are'nt streakng I
wouldn't suggest touching them at all. Checking these fasteners, bolts,
or rivets should be done at anual time at least.
Bill Jepson
You are correct, Bill. That’s
Tracy’s
recommended fix for the one case; with no mention of matching bolts and holes,
although that could be a good idea. I’m wondering if it would be the recommended
fix for 10, or 50, if it came to that. The rivets on my 20B are streaking
(maybe smoking IS a better termJ) and my annual is coming up in about a month. I’m
thinking perhaps that’s when I’ll address the issue.
It occurs to me that my SABER prop
extension is bolted the re-drive flange with 6 - 3/8”-24 high-tensile
bolts torqued to 35 ft-lbs with steel lock nuts – no safety wire, all per
Saber Manufacturing. There is enough clearance of these bolts in the
holes for easy slip-in fit. These are on a relatively small bolt circle. There
is no issue with this setup. So I would extrapolate that 20 AN3 bolts,
properly torqued, on a larger bolt circle, would be more than adequate.
Al