REFLECTOR: fuel cap

[Scott Derrick]

They don't get loose John. They get left sitting unlatched in their 
respective hole or left sitting on the wing next to their hole.

Scott

-------- Original Message --------
Subject: Re: REFLECTOR: fuel cap
From: John Dibble <aminetech at bluefrog.com>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Date: 01/29/2012 04:14 PM

> What I want to know is how, besides forgetting to replace it, does a Velocity fuel cap
> get loose?
>
> John
>
> David Ullman wrote:
>
>> There has been some discussion in the Squadron III news letter about lost
>> fuel caps.  Seems that there are two issue: 1) cap going through the prop,
>> and 2) siphoning fuel from both tanks.  The first is easily solved with a
>> tether system which I will add.  The second is what our rather complex
>> venting system is intended to overcome, I believe.  In thinking this
>> through, if a cap comes off, there now low pressure in one tank which could
>> allow fuel to be siphoned out and draw fuel from the other tank.  However,
>> the venting system allows air, rather than heavier fuel, to be drawn into
>> the capless tank minimizing the loss of fuel.  In theory this seems right.
>> Can someone who has experienced a cap loss confirm this is what happens?
>>
>> Now have 6 flights on N444DX all with my test pilot Robin Reid at the
>> controls (co-pilot on the Pipistrel G4). Aileron problems seem to be
>> resolved.  It has rained here solidly for the last 2 weeks (10+ inches, the
>> drought is over!! - a NW joke) so no more progress on that front.
>>
>> David Ullman
>> N-444DX Velocity
>> EAA 292 President
>> david at davidullman.com
>> 541-754-3609
>>
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