REFLECTOR: FUEL FEED & Vents--blinking warning

[Jim Sower]

<... at altitude when the relative flotation is lessened ...>

You've lost me here ... how and by how much does buoyancy vary with 
altitude?

Rene Dugas wrote:

>I would add away from the turbulence of flow from fuel draining from the
>wing inlet that may make the switch bob up and down especially at
>altitude when the relative flotation is lessened.
>Rene'
>
>-----Original Message-----
>From: reflector-bounces at tvbf.org [mailto:reflector-bounces at tvbf.org] On
>Behalf Of Jim Sower
>Sent: Thursday, February 17, 2005 8:42 PM
>To: Velocity Aircraft Owners and Builders list
>Subject: Re: REFLECTOR: FUEL FEED & Vents--blinking warning
>
>I would say a half gallon or a gallon down from normal fuel level 
>(depending on whether or not your sump is vented).
>
>Tom Martino wrote:
>
>  
>
>>Where exactly should the sensor n the header tank be placed?
>>
>> 
>>
>>-----Original Message-----
>>*From:* John Dibble [mailto:aminetech at bluefrog.com]
>>*Sent:* Thursday, February 17, 2005 10:00 AM
>>*To:* Velocity Aircraft Owners and Builders list
>>*Subject:* Re: REFLECTOR: FUEL FEED & Vents--blinking warning
>>
>> 
>>
>>Sometimes my light comes on at high altitude.  Sometimes it stays on 
>>for up to an hour.  Sometimes during that hour it will occasionally 
>>blink "off".  Sometimes it just blinks on occasionally.  Sometimes it 
>>doesn't come on for several months.  It never comes on when I am at 
>>low altitude.  I'm thinking of re-labeling it as a warning that O2 is 
>>needed.
>>
>>John
>>
>>SlvEgl99 at aol.com wrote:
>>
>>    
>>
>>> I have a question that may be related to venting.  At high altitude 
>>>(10,000 or so) the sump low fuel warning light occasionally blinks on
>>>      
>>>
>
>  
>
>>>and off. There is no other indication of low fuel, plenty in the 
>>>mains and no fuel starvation indications of any sort. This has 
>>>happened only twice in the hours I have flown, and as soon as I 
>>>return to a lower altitude there is no problem. The sump low fuel 
>>>sensor is located in the front, top center of the tank, about 1 1/4" 
>>>below the top in the position called for in the builders manual. I 
>>>suppose that the higher nose attitude resulting from flight at this 
>>>altitude may result in this condition, but I would like to hear other
>>>      
>>>
>
>  
>
>>>thoughts. Bob Wood
>>>
>>>
>>>
>>>
>>>
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