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From: "Vision micro" <vision_micro@hotmail.com>
To: lancair.list@olsusa.com
Subject: Re: First Flight or 366B - long
Date: Mon, 04 Dec 2000 13:17:23 -0800
Message-ID: <F164Aq3jGd2vtXSi9Kl0000dc44@hotmail.com>
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>>

>the problem with him.  No one had any great ideas - the only thing we could
>come up with was a fuel starvation - maybe from the Vision Micro fuel flow
>sensor (it has a restrictor in it).
>
>Thursday morning we removed the VM flow meter and reconnected a straight

Matt,

I was sorry to hear about what happened on your flight.  I read what happed 
and just wanted to address the comments you had mentioned above regarding 
the VM flow meter.

The flow transducers that are manufactured for us are certified and are also 
used by virtually all other manufactures of fuel flow instrumentation. You 
mentioned that the flow transducer has a restrictor in it.  The flow 
transducer 'restriction' is really a flow director and represents very 
little pressure drop. It is used on very high flow rate engines (>30gph).

The pressure drop (as published by transducer mfg.) for gasoline is 
nonlinear and is as follows:
	30 GPH		~1.2   PSI
	15 GPH		~0.3   PSI
	  7 GPH		~0.1   PSI


Best Regards

David McCluskey
support@visionmicrosystems.com

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