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Hi Dave,
Although it is officially a No-No, I have always used Teflon tape on my large pipe thread ends. I am carefully to not wrap it so that tape is not near the pointed end and is wrapped tight. I also found the fitting "bottoming" out in the redrive casting as if made for a straight rather than a tapered NPT. This not a recommendation to use Teflon tape - just my experience has been OK.
Ed A
----- Original Message ----- From: "David Staten" <Dastaten@earthlink.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, June 23, 2005 7:52 AM
Subject: [FlyRotary] Thread "sealing"
Ok, I dont have my manual in front of me.. so maybe RTFM is the right answer..
But I am close to putting on my oil fittings "for good" and have noticed a few things...
On the RWS redrives, I do not know if the female threaded holes (1/4" and 1/8") are tapered or not, but it appears that my AN fittings I have to thread into the holes on the RWS are able to bottom out. What is the appropriate method for ensuring a snug fit and preventing vibration or pressure induced flexing/loosening. Likewise, sealing options for other threaded ports (not the flared sides of the AN fittings, but the pipethreaded end of the fitting).
Teflon? Lock-Tite? Whats the answer? I have heard of anecdotal stories of these products causing problems when bits and pieces of them break off and lodge someplace.
Dave Staten
Homepage: http://www.flyrotary.com/
Archive: http://lancaironline.net/lists/flyrotary/List.html
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