REFLECTOR: It's been really quiet this week

[steve korney]

It's best to have both spark plugs fire at the same time.. 


Steve 

Date: Tue, 18 Feb 2014 15:52:29 -0600
From: aminetech at bluefrog.com
To: reflector at tvbf.org
Subject: Re: REFLECTOR: It's been really quiet this week


  
    
  
  
    On 2/18/2014 2:53 PM, Brian Michalk
      wrote:

    
    
      
      Hmm.  Interesting.  It's certainly
        easy enough for me to change.  I can simply enter a new value of
        25BTDC in the software in flight.

        I suppose I will also turn off the magneto and see if the gasket
        thermocouple temperatures go down.  I'd leave the magneto at
        it's current setting of 28BTDC.  If the temps go back up with
        the magneto, then that's a strong indicator that it should be
        retarded.

        

        I wonder if I should switch back to a massive plug?  I was using
        Autolite 386, until an airport buddy told me to dump them in the
        trash.

        

      
    
    With the proper timing, my $2 auto plugs work great and seem to last
    much longer than massive plugs.  With the mag off, you'll probably
    lose power and see high egts.  I got good results once running the
    mag at 32 degrees and the EI at 24.  I think what that does is make
    the combustion start slower so you don't get a big burn rate at TDC 
    where no energy can be transferred to the crank.  Running both at 24
    degrees gives similar performance.

    

    John

    

    
       

        On 2/18/2014 2:42 PM, Michael Watson wrote:

      
      
        
          Brian,

            

          
          For some
            unknown reason, when the plugs are changed from massive to
            Iridium fine wire,

          
          the CHT
            seams to increase quite a bit. Running my Franklin engine
            over the last six years in Florida ,

          
           I never
            had high CHT problems until I changed to the fine wire
            plugs. At John's suggestion, I reduced 

          
          my advance
            from 28 degrees to 25 degrees and the temps returned to what
            I saw before the change.

          
          Ironically,
            the engine seems to develop slightly more power and run much
            smoother.

            

          
          Mike W.

          
        
        
      
      

    
    

  





	
		
			
				
			
		
		
			
				This email is free from viruses and malware because avast! Antivirus protection is active.
			
		
	






_______________________________________________
To change your email address, visit http://www.tvbf.org/mailman/listinfo/reflector

Visit the gallery!  www.tvbf.org/gallery
user:pw = tvbf:jamaicangoose
Check new archives: www.tvbf.org/pipermail
Check old archives: http://www.tvbf.org/archives/velocity/maillist.html 		 	   		  
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://www.tvbf.org/mailman/private/reflector/attachments/20140218/70797010/attachment.html>