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REFLECTOR: Bounce from Nate Calvin

Forwarded message:
> I found my aileron brackets in the engine compartment to be assembled
> identically as the bearings brackets in the keel.  Although, no axial loads
> there, it would be a bit of a bummer to lose an aileron bearing in flight.
> Guess I'll have to build a retainer for those two also.
> Nate Calvin
> 		-----Original Message-----
> 		From:	Peter Beaty [SMTP:PETER.J.BEATY@usa.dupont.com]
> 		Sent:	Thursday, February 04, 1999 6:54 AM
> 		To:	jpr@ix.netcom.com; reflector@awpi.com
> 		Subject:	Re: REFLECTOR: Bearing AD
> 		At 08:28 PM 2/3/99 -0500, jpr@ix.netcom.com wrote:
> 		>As a matter of fact, I'm just putting in the rear bearing
> bracket in a
> 		>few days, and discovered that I, too, have the countersunk
> screws. 
> 		>Looks to me like it would make the perfect ramp for the
> bearing to ride
> 		>over and past the retaining lip.
> 		>
> 		YES, my thoughts exactly!  On the aft bearing, even if there
> is no axial
> 		force by design, maybe some would develop somehow/someday
> (Murphy), and the
> 		bearing would start to vibrate out of the bracket.  I dunno,
> but it was
> 		fast and easy to add the washers, so I did.  Took less time
> than reading
> 		all the e-mails on this subject!
> 		>My front bearing bracket has the round-head screws which
> look like
> 		>they'd work much better - except that one of them is canted
> off to the
> 		>side (so was one of the rear screws too).  
> 		>
> 		>Your idea of 7/8" washers under each screw is probably
> better, but it
> 		>still doesn't "look right" to me, and there would still be
> some side
> 		>load.  
> 		>
> 		The washer is, to me, an acceptible improvement.  The screw
> is still
> 		"canted", but not as much as before, because the edge of the
> washer
> 		contacts the bracket, helping resist any further canting or
> bending of the
> 		screw.  Try it, you'll see what I mean.
> 		Of course, a fully concentric collar would be best, but "is
> the view worth
> 		the climb"?  Your choice, and my $0.02.
> 		Pete.

Brian Michalk  <http://www.awpi.com/michalk>
Life is what you make of it ... never wish you had done something.
Aviator, experimental aircraft builder, motorcyclist, SCUBA diver
musician, home-brewer, entrepenuer and SINGLE!