REFLECTOR: Lord Mounts

[Gary Stull]

I work as an A&P. All production aircraft that I've seen, including heavy jets, use metal self locking nuts. I've never seen anything else used. Castle nuts and cotter pins may be used somewhere for engine mounts, but I've never seen it
  ----- Original Message ----- 
  From: Terry Miles 
  To: 'Velocity Aircraft Owners and Builders list' 
  Sent: Tuesday, September 09, 2008 8:09 AM
  Subject: Re: REFLECTOR: Lord Mounts


  Dave, Steve,

   

  In another note, Steve Korney said I should have castle nuts and cotter pins on the engine mounts.  I think I would have used what came in the Velo engine kit, and I have metal locking nuts on these bolts.  I am checking with the factory on that today.

   

  My question is about torque setting now.  Would it be 38 ft lbs with the metal lock nuts or with castle nuts?  Would the different hardware change the torque value?  Thank you both for this input.  I want to learn, and I appreciate your help to me.

   

  Terry

   


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  From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On Behalf Of davedent at comcast.net
  Sent: Tuesday, September 09, 2008 1:26 AM
  To: Velocity Aircraft Owners and Builders list
  Subject: Re: REFLECTOR: Lord Mounts

   

  When it comes to engine mounts I have always torque the 7/16" bolts to 38ft lbs and have had very good success with them.  It looks like your mount bolt is not torque correctly.  But may be just fine.  Just torque them to 38lbs and they should be OK. Make sure you bolts are not bottomed out.  Like being to long.  Also that the spacer is also installed. 

   

  Remember also that most rubber products get harder with age.  In the environment that our engines run in I wouldn't keep them more then eight years.  Even less it they start cracking.  

   

  Believe me there is a difference between manufactures of mounts as well.  You get what you pay for. 

   

  Also keep solvents and oils away from them and keep them clean.  The harder they get the less effective they are and so being more damage is done to the rest of the plane. Don't take rubber mounts lightly. They do a lot more then just hold the engine in place.  

  Dave



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