That’s impressive, Bill. I don’t think (as Lynn said) and aircraft ever came out of the sky because of safety wire – but plenty have because lack of it.  However, some bolts and such on the rotary, you would need to drill the heads/nuts yourself – in that case, I’m think I would look to other alternatives as drilling a bolt head or threaded part could weaken it. Fortunately, the vibration level is lot lower on the rotary compared to most reciprocating engines.

By the way,   I’ll bet you even wire the 37 deg AN fittings as well {:>)

Ed

Keith,
there will be many divergent opinions on this I'm sure. My personal mantra is safety wire anything you don't want to fall off! There are several approaches too. I am an ex motorcycle racer and the rules required all basic safety items to be wired. Those were, all oil drains, water drain plugs if any, brake mount bolts, and oil feed bolts and filters. I would usually do more than was required. I have seen many things vibrate off that you wouldn't think possible when operating at high power levels. I would use both .039 and .025 stainless steel safety wire. The .025 isn't FAA approved on a lot of things, but it's light and serves the purpose. I even wired 39°AN fittings, which isn't required.
Bill Jepson


-----Original Message-----
From: ktradcliff@comcast.net
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Sent: Sun, 27 Jul 2008 5:07 pm
Subject: [FlyRotary] Safety wire

Hello everyone,

I know that the subject of safety wire has been discussed many times before,  

however searching the archives can at times be very difficult and actually 

finding the answer you want is like winning the lottery (it never happens).  

What I would like to know is what most are considering an absolute must to be 

safety wired.  What the FAA r

equires and what is not so important but some are 

doing anyway.  I feel that the subject of safety can never be discussed enough.  

I would like everyone that has an opinion on safety wire and what must be safety 

wired to weigh in on this subject.  I plan to save some if not all of your 

answers for future reference.  Maybe we can make a list of what must be safety 

wired.

Thanks

Keith

RV-7A

13-B 

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