Air filters

Richard Strickland richard.s at allied-callaway.com
Fri Aug 13 13:45:59 AKDT 2004


It's Friday--going to Omaha--I was thinking about what it was about the noise we liked: My Company is oriented to designing and implementing Automotive Conveyor Systems(KC--Conveyortown USA) and most of our union Millwrights and Ironworkers have Harleys(we also have the KC Plant's maint. contract).  These guys will go buy a new $20,000.00+ bike, ride it directly to the mod shop and put on straight pipes.  What'd ya do THAT for?  "So it sounds like a MOTORCYCLE!"    Pattern ships used to scream--it was what a pattern airplane was SUPPOSED to sound like........but our ears used to ring for a few days following a contest then also.........Have a great weekend and thanks again for all the help.
                Richard
  ----- Original Message ----- 
  From: Richard Strickland 
  To: discussion at nsrca.org 
  Sent: Thursday, August 12, 2004 1:00 PM
  Subject: Re: Air filters


  We were looking for ANY way to quiet those suckers down.  My deal was running a  RE short stroke Rossi in a heavy, clean E-HUGE-1A and turning an 11-7.5 wood prop 18,000+ on the backside of a Split-S.  It was great.  LOUD--but great.  The pipes would RING.  Prop flutter was an issue along with airframe and pipe noise, engine speed, etc., etc......... No question the newer stuff is more capable and the patterns more challenging--but I don't know if they are more FUN.  Part of the enjoyment was going out and making some serious racket.

  RS
    ----- Original Message ----- 
    From: Jim_Woodward at beaerospace.com 
    To: discussion at nsrca.org 
    Sent: Thursday, August 12, 2004 12:35 PM
    Subject: Re: Air filters



    Hi All, 

    I was under the impression that the real cause of excessive noise was prop (rpm & diameter).  The actual engine noise and exhaust setup (by todays typical standard) was not the significant cause of noise - the prop is the culprit.  
    Jim W.




         <tony at radiosouthrc.com> 
          Sent by: discussion-request at nsrca.org 
          08/12/2004 01:32 PM 
          Please respond to tony 

                 
                  To:        <discussion at nsrca.org> 
                  cc:         
                  Subject:        Re: Air filters 



    Richard:
    I make one for the OS 160... 
      
    Tony Stillman
    Radio South
    3702 N. Pace Blvd.
    Pensacola, FL 32505
    1-800-962-7802
    www.radiosouthrc.com 
    ----- Original Message ----- 
    From: Richard Strickland 
    To: NSRCA 
    Sent: Thursday, August 12, 2004 10:37 AM 
    Subject: Air filters 

    Anyone, 
      
    When we first started trying to quiet things down, one of the areas we looked at was intake noise.  We used to use a stretch on filter housing with small filter disks that helped the noise problems with the added benefit of keeping crap out of the engine--gee, what a concept.  Are there any such animals available now?  We fly off an old asphalt runway and there is the possibility something significant was sucked into a brand new 170 and destroyed the piston, sleeve, ring and bearing.  First time for everything, I guess.  The 60 sized ones did not seem to affect performance. 
      
    Thanks, 
      
    Richard 


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