[Amps] Derating Dry Loads

[Randall, Randy]

I remember Ford having a torque spec on their aluminum head engines in the 80's that read " Tighten the head bolt to XX ft lbs, then turn the bolt an additional 1/4 turn."

Randy

Randy E. Randall AB9GO

-----Original Message-----
From: amps-bounces at contesting.com [mailto:amps-bounces at contesting.com] On Behalf Of Fuqua, Bill L
Sent: Wednesday, December 08, 2010 12:25 AM
To: Jim Dawson; amps at contesting.com
Subject: Re: [Amps] Derating Dry Loads

For those that don't get it, a few did, once you feel the torque drop the bolt has already reached its limit and is broken.
Once you see the SWR go up it is most likely too late.
73
Bill wa4lav

________________________________________
From: amps-bounces at contesting.com [amps-bounces at contesting.com] On Behalf Of Jim Dawson [jdawson at jasystems.com]
Sent: Tuesday, December 07, 2010 4:53 PM
To: amps at contesting.com
Subject: Re: [Amps] Derating Dry Loads

  ----- Original Message -----
  From: Bill Fuqua
  To: amps at contesting.com
  Sent: Tuesday, December 07, 2010 3:40 PM
  Subject: Re: [Amps] Derating Dry Loads


  Well crap, that explains a lot, it is just "before" they snap!

   ...    Just like tightening head bolts on a V8. You torque the bolts until
  just before you fill them give and they snap.
  73
  Bill wa4lav


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