From: "Charlie England" <flyrotary@lancaironline.net>
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Subject: Re: [FlyRotary] fuel consumption gauge
To: Rotary motors in aircraft <flyrotary@lancaironline.net>
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Date: Wed, 26 Jul 2017 21:08:13 -0500
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On 7/26/2017 4:58 PM, Neil Unger wrote:
> Gents,  Is anyone aware of a fuel consumption  gauge that will give 
> fuel consumption in real time?  I can get one that has two flow meters 
> but that makes installation complicated and not really cost 
> effective.  I am looking for something that works off the injectors.  
> As usual it has to be "tweaked" with actual fuel usage.  Did not Tracy 
> have such a system?  Neil.
>
>
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Just about any fuel flow instrument will work, if you design the fuel 
architecture to allow it. If you place the regulator & its bypass prior 
to the flow sensor & injectors, you only need one sensor. The fuel 'dead 
heads' at the injectors, so it's always at full system pressure, and in 
the unlikely event that there is vapor in the lines, it's immediately 
blown through the injectors. It's how virtually every car is set up 
these days. It's being done in a/c, too. I'm pretty sure that Tracy has 
this fuel delivery architecture in the RV-8 3-rotor.

If you're patient, you can find Flowscan sensors & various brands of 
totalizers on Ebay  for very good prices.

Charlie

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