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From: "Rino" <lacombr@nbnet.nb.ca>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
References: <list-5096367@logan.com>
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Subject: Re: [FlyRotary] Re: Sam Hodges NTSB write up
Date: Thu, 18 Aug 2011 19:39:44 -0300
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Each fuel pump has its own fuel pickup in the header tank.  I cannot see how 
this could happen.

Rino

----- Original Message ----- 
From: "Ernest Christley" <echristley@att.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironline.net>
Sent: Thursday, August 18, 2011 1:29 PM
Subject: [FlyRotary] Re: Sam Hodges NTSB write up


> Rino wrote:
>> My probllem with fuel starvation.  The fuel pressure regulator is another 
>> component to look at.  A few weeks ago, while in flight, the engine 
>> started to loose power.  A quick scan showed the fuel pressure going 
>> down, it went down to about 7 psi.  I switched fuel pump B on.  the 
>> pressure came up to about 27 psi. with the two pumps on and I landed,  I 
>> was in the circuit at the time.  While taxiing back to the hangar I 
>> turned pump A off and the pressure went down, then I turned pump B off 
>> and the pressure went down.   The next day I went back to test the 
>> system, I started the engine on one fuel pump, as usual, the fuel 
>> pressure was  about 38 psi. as it has been every time before.  Did a few 
>> runs on the runway to warm things up, (no takeoff) everything was ok, 
>> fuel pressure was normal all the time, on one fuel pump of the other. 
>> Returned to the hangar, ordered a new fuel pressure regulator (a new 
>> MAZDA regulator) and installed it a few days later, went flying.  The 
>> problem never returned.
>>
>
> Sounds like you could have a leaf, piece of plastic sheet, or some paper 
> in you tank.  It floats over to the fuel pickup, blocking flow so that you 
> need two pumps for pressure, and then floats away from the pickup after 
> you land.
>
> Harbor Freight regularly has those "camera on a probe" tools for $100. 
> Might be some cheap insurance, and you could send me the camera when 
> you're done with it 8*)
>
> --
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