Air filters

[Richard Strickland]

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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