Mailing List flyrotary@lancaironline.net Message #12500
From: Ed Anderson <eanderson@carolina.rr.com>
Subject: Re: [FlyRotary] Re: 3000 fpm :-) (unofficially)
Date: Sun, 31 Oct 2004 07:19:25 -0500
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
Message
No,Rusty,  the #$%^@ weather continued to keep the ceiling low until about 2 hour after my deadline to a launch.  THEN it began to clear up. Low ceilings without letup for two weeks and it couldn't clear two hours early.  
 
Really regret not making it, but just not up to a 16 hour drive ( I must admit I have gotten very spoiled by being able to fly everywhere).  Grandson's birthday was Saturday so he was very pleased that grandad attended his party rather than off flying {:>).
 
Got to start on redesign of my exhaust/muffler system.  From the theory (If I understand it) It appears that the reactive (sound canceling) type muffler is the approach with the most promise.  It tends to reduce low freq noise (which is the predominate energy) in the rotary's exhaust.  The absorption type muffler appears to be best for frequencies above 1000HZ.  So perhaps a combination.
 
In any case, I intend to get the noise level down to a more acceptable level before next Years flyins.
 
Appreciate you continuing to share your performance data.  While nothing comparable to you performance, my overweight RV-6A has also responded very nicely to the 2.85 and larger prop and the good news is that my fuel burn and airspeed appear to be very comparable to the 2.17 combination.  Rpm is slightly higher (approx 200-300 rpm) for the same 2.17 fuel burn rate - I presume due to a slight lesser load of the gearbox/prop combination at cruise. Initial ROC has increased by approx 600 fpm.
 
Still need to get some more definitive data on performance.  So will probably start that in a couple of weeks.
 
Best Regards
 
Ed. 
 
----- Original Message -----
Sent: Saturday, October 30, 2004 10:57 PM
Subject: [FlyRotary] Re: 3000 fpm :-) (unofficially)

Great to hear about the performance!  Wow! 3000 fpm and UP at that{:>).  Sounds like you are getting the little bird debugged just great.
 
Ed Anderson 
 
 
Thanks Ed.  It's finally starting to be fun.   BTW, did you make it to Lake City?
 
Cheers,
Rusty (still happy to be rid of the turbo) 
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