Message-ID: <004c01c3ce92$0483f610$0202a8c0@eric>
From: "Eric Ruttan" <ericruttan@chartermi.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-2910137@logan.com>
Subject: Re: [FlyRotary] Re: aluminum hose bungs/fittings
Date: Tue, 30 Dec 2003 00:01:42 -0500

It cant be mounted solid enough to create no relative motion.  The rad
itself will flex trying to keep up with the vibration.  Rads do not like
vibration at all.

----- Original Message ----- 
From: "Finn Lassen" <finnlassen@netzero.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Monday, December 29, 2003 10:29 PM
Subject: [FlyRotary] Re: aluminum hose bungs/fittings


> Russell Duffy wrote:
>
> > I'm now wondering if I couldn't just put about a dozen 1/8" pop
> > rivets, rather than welding the angle.  I have to admit, that I'm
> > thinking about easy of replacement if one ever gets damaged away from
> > home.  Assuming I keep a spare core with two AN12 fittings welded to
> > it, all I'd have to do to replace a core is drill out the
> > rivets, then drill and pop rivet the new core.
>
> That's the way I did it (but also JB-Weld inbetween the angles and the
> cores - probably not needed). Well, actually I do have two 1/4 threaded
> rods on the outside of the cores connecting the upper and lower angles.
> However, both Tracy and Ed have rubber spacing  - basically clamping the
> cores between their mounts.
> Tracy's comment was that my installation would never make it in a
> Lycoming environment (vibrations).
> I never fully understood that - if cores are solidly mounted to the
> engine there should be no realtive motion...
>
> Finn
>