REFLECTOR: re. Oil line bracket

[Dave T Nelson]

Jack, my two cents - you need to build everything aft of the firewall
thinking that it's doing everything it can to self-destruct.  Your EAA
counselor is right on.

Any lines, wires, or tubes going from the engine to the firewall need to be
supported.  Lines that aren't going between the firewall and engine should
also be supported.

Not to restart the debate on this topic (but c'mon guys!  How many times do
we need to relearn a lesson?).... all fittings on the engine or on lines
going between the engine and the firewall (or really anywhere between the
engine and anything that isn't vibrating) should be steel.

One of the best things I was taught when starting to build airplanes was
this... ask yourself, "how's it going to feel when I'm sitting at the end
of the runway?"... that's the best quality standard I've found.  You will
find that anything not done right will create nagging doubts... that suck
the fun right out of flying your bird...

My two cents.

Dave

Dave T. Nelson
T/L 553-4327, Voice 507-253-4327, Fax 507-253-3648
Program Director, ISC ECAT NPI & Test Engineering



From:	reflector-request at tvbf.org
To:	reflector at tvbf.org,
Date:	04/28/2013 07:34 AM
Subject:	Reflector Digest, Vol 97, Issue 63
Sent by:	reflector-bounces at tvbf.org


----- Message from Brian Michalk <michalk at awpi.com> on Sun, 28 Apr 2013
07:30:45 -0500 -----
                                                           
      To: Velocity Aircraft Owners and Builders list       
          <reflector at tvbf.org>                             
                                                           
 Subject: Re: REFLECTOR: Oil Line Bracket                  
                                                           

That is exactly as I did mine.  I've seen one other V that did it this way
as well.

On 04/28/2013 12:25 AM, Jack Prock wrote:
      Hi,

      A bit quiet on the Reflector, so I will throw a question out. My EAA
      counselor, has suggested that I
      add bracing to the Oil line bracket. He says he thinks that it will
      be subject to vibration and long term
      it will fail.

      So, the question is, has anyone had any problems with this bracket?
      Any fatigue on the bracket
      from vibration? My thought is that the oil lines themselves will
      serve to add stiffness, and the bracket
      will not see a large enough vibration amplitude to cause any
      fatigue... but what do I know, my
      plane is not flying yet. So the question is out to those that are.

      Jack




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