Mailing List flyrotary@lancaironline.net Message #7988
From: Russell Duffy <13brv3@bellsouth.net>
Subject: RE: [FlyRotary] Re: Tracy's dyno test- universal intake comments
Date: Mon, 10 May 2004 19:53:23 -0500
To: 'Rotary motors in aircraft' <flyrotary@lancaironline.net>
Message
On a standard day (rare in Florida) I might see 5000 - 5100. But normally 4900 - 4950. 
 
So let me get this straight, you're using a carb, and have low compression, have 3 more inches of pitch, and are still getting 100-200 more static rpm than me???  Good thing I don't have a gas oven to stick my head in :-)
  
My climb rate seems to be influenced by amount of fuel I carry. Difference between 5 and 15 gallons is significant. 
 
This is a good point, and may explain why I only got 1300 fpm the other day (completely topped off), when I was getting 1500 with the Warp (fuel level unknown).   I'm almost afraid to ask, but what sort of climb rate do you get? 
 
Did you get my prop numbers from Clark? The original numbers were 68x74. Not sure what it is now. 
 
I had these numbers from before, but have not asked Clark.  He did tell me that Tracy's old prop started out as a 70x73, then was modified to 68x71.  Did you ask for more rpm when you sent it back for final tuning?  If so, you are certainly at less than 74" pitch now.  
 
Thanks,
Rusty (not a happy guy) 

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