Today's Message Index:
----------------------
 
     1. 12:15 AM - Re: 914 fuel consumption (bmoorhouse)
     2. 11:05 PM - Re: 914 fuel consumption (rparigoris)
 
 
 

Message 1


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Time: 
12:15:26 AM PST US
Subject: 
Re: 914 fuel consumption
From: 
"bmoorhouse" <barrymoorhouse@btinternet.com>
      
      
      
      rparigoris wrote:
      >  instead of leaving the TCU on where it is in control of wastegate servo, jog
      the wastegate servo till it is fully opened, then turn off the TCU?
      > Thx.
      > Ron Parigoris
      
      Simple question - why? 
      
      The TCU will open the wastegate when it needs to be opened and close it when it
      doesn't - I cannot see it will affect fuel flow significantly to jam it open
      when MAP is the important factor, not wastegate position.
      
      My 5 cents
      
      --------
      _______________
      Barry Moorhouse
      G-JHYS Trigear XS
      Rotax 914 UL
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=295366#295366
      
      

Message 2


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Time: 
11:05:02 PM PST US
Subject: 
Re: 914 fuel consumption
From: 
"rparigoris" <rparigor@suffolk.lib.ny.us>
      
      
      Hi Barry
      The answer to why, is my curiosity if leaving the wastegate closed, where exhaust
      energy is being used to pressurize the intake is more efficient in terms of
      fuel flow for a given MP compared to leaving the wastegate opened where there
      is no backpressure. I know pressurizing intake will create more power, but when
      operating like a normal aspirated 912, in terms of efficency, are you better
      off leaving wastegate closed? Opened? or perhaps makes no matter?
      Thx.
      Ron Parigoris
      
      
      Read this topic online here:
      
      http://forums.matronics.com/viewtopic.php?p=295528#295528
      
      








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