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		wdaniell.longport(at)gmai Guest
 
 
 
 
 
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				 Posted: Tue Jan 26, 2016 12:39 pm    Post subject: Fuel flow transducer 914 | 
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				Would I be correct in assuming that to calculate the fuel flow you need to measure the outgoing fuel and then subtract the returning fuel?
 So one needs two transducers....
 thanks
 Will
 
 
 William Daniell
 
 LONGPORT
 +57 310 295 0744
 
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		pestar
 
  
  Joined: 11 Apr 2007 Posts: 61 Location: Auckland, New Zealand
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				 Posted: Tue Jan 26, 2016 1:12 pm    Post subject: Re: Fuel flow transducer 914 | 
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				You need two units which I have in my DynAero MCR-4S and depending on your instrumentation ie EFIS or other, your device will need to subtract one from the other to give you fuel flow.
 
 I use a MGL EFIS with only one input with the trickery being done by a little device from sparxfly.co.nz (it takes the 2 inputs, subtracts and then outputs to the EFIS).
 
 Cheers Peter
 
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  _________________ Peter Armstrong
 
Auckland, New Zealand
 
DynAero MCR-4S (Do not shoot me   ). | 
			 
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		rlborger(at)mac.com Guest
 
 
 
 
 
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				 Posted: Tue Jan 26, 2016 2:21 pm    Post subject: Fuel flow transducer 914 | 
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				William,
 That is correct.
 
 Blue skies & tailwinds,Bob BorgerEuropa XS Tri, Rotax 914, Airmaster C/S Prop (75 hrs).Little Toot Sport Biplane, Lycoming Thunderbolt AEIO-320 EXP3705 Lynchburg Dr.Corinth, TX  76208-5331Cel: 817-992-1117rlborger(at)mac.com (rlborger(at)mac.com)
 
 On Jan 26, 2016, at 2:35 PM, William Daniell <wdaniell.longport(at)gmail.com (wdaniell.longport(at)gmail.com)> wrote:
 Would I be correct in assuming that to calculate the fuel flow you need to measure the outgoing fuel and then subtract the returning fuel?
 
 So one needs two transducers....
 
 thanks
 
 Will
 William Daniell
 LONGPORT+57 310 295 0744
 
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		standa.svec(at)volny.cz Guest
 
 
 
 
 
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				 Posted: Tue Jan 26, 2016 2:56 pm    Post subject: Fuel flow transducer 914 | 
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				Hellou Peter,
 please, exactly what "little device from sparxfly" do you have in mind?
 I canīt find it on their web.
 Thanks very much.
 Stanislav
 
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		raimo.toivio(at)rwm.fi Guest
 
 
 
 
 
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				 Posted: Thu Feb 04, 2016 6:39 am    Post subject: Fuel flow transducer 914 | 
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				My system has calculated well and accurately with one transducer     only (between a returning fuel T and carburrettors).
      Cannot understand reason for two transducers...
      
      Raimo
                    allekirjoitus        (info(at)rwm.fi)     
      26.1.2016, 22:35, William Daniell       kirjoitti:
      
       	  | Quote: | 	 		                  Would           I be correct in assuming that to calculate the fuel flow you           need to measure the outgoing fuel and then subtract the           returning fuel?
          
          
          So           one needs two transducers....
          
          
          thanks
          
          
          Will
          
          
          
          
                                                 William Daniell
                
                LONGPORT
                +57 310 295 0744
              
            
          
        
       | 	 
 
 
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		Burrilla
 
 
  Joined: 25 Apr 2015 Posts: 189
 
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				 Posted: Thu Feb 04, 2016 7:29 am    Post subject: Fuel flow transducer 914 | 
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				Mine as well.
 Alan
 
 Sent from my iPad
 
 On 4 Feb 2016, at 14:38, Raimo Toivio <raimo.toivio(at)rwm.fi (raimo.toivio(at)rwm.fi)> wrote:
  	  | Quote: | 	 		                     My system has calculated well and accurately with one transducer     only (between a returning fuel T and carburrettors).
      Cannot understand reason for two transducers...
      
      Raimo
                    allekirjoitus        (info(at)rwm.fi)     
      26.1.2016, 22:35, William Daniell       kirjoitti:
      
       	  | Quote: | 	 		                  Would           I be correct in assuming that to calculate the fuel flow you           need to measure the outgoing fuel and then subtract the           returning fuel?
          
          
          So           one needs two transducers....
          
          
          thanks
          
          
          Will
          
          
          
          
                                                 William Daniell
                
                LONGPORT
                +57 310 295 0744
              
            
          
        
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		jan_de_jong(at)casema.nl Guest
 
 
 
 
 
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				 Posted: Thu Feb 04, 2016 5:47 pm    Post subject: Fuel flow transducer 914 | 
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				Turbo engine fuel system is different. Normal flow rates would be:
      - forward flow 100 l/h
      - carburettor flow 20 l/h
      - return flow 80 l/h.
      
      Jan
      
      On 2/4/2016 4:28 PM, Alan Burrill       wrote:
      
       	  | Quote: | 	 		                Mine as well.
        
        
        Alan
          
          Sent from my iPad
        
          On 4 Feb 2016, at 14:38, Raimo Toivio <raimo.toivio(at)rwm.fi (raimo.toivio(at)rwm.fi)>         wrote:
          
        
         	  | Quote: | 	 		                                 My system has calculated well and accurately with one           transducer only (between a returning fuel T and           carburrettors).
            Cannot understand reason for two transducers...
            
            Raimo
                                      allekirjoitus              (info(at)rwm.fi)           
            26.1.2016, 22:35, William Daniell             kirjoitti:
            
             	  | Quote: | 	 		                              Would I be correct                 in assuming that to calculate the fuel flow you need to                 measure the outgoing fuel and then subtract the                 returning fuel?
                
                
                So one needs two                 transducers....
                
                
                thanks
                
                
                Will
                
                
                
                
                                                                         William Daniell
                      
                      LONGPORT
                      +57 310 295 0744
                    
                  
                
              
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