REFLECTOR: fuel cap

[Scott Derrick]

If my caps were located such that a departing one would go through the 
prop I would probably think hard about chaining it to the tank, since 
ours are outside the prop arc(thank you Maher) I don't see the need.

Scott

-------- Original Message --------
Subject: Re: REFLECTOR: fuel cap
From: Mark Magee <edjonesbrady at gmail.com>
To: Velocity Aircraft Owners and Builders list <reflector at tvbf.org>
Date: 01/30/2012 10:53 AM

> There was big discussion years ago in the EZ community concerning caps on chains. One side said chain them on to save them (from loss and props strike). Others said let the the cap depart to avoid the cap violently beating the fuel tank in flight in the airstream. Bottom line was that the caps a lot of the EZ's used back then were (per plans) cheapos and not aviation locking grade spec'd out on Velos. I'm very comfortable with my Velo caps unchained and would not consider chaining them.
>
> Mark B. Magee
> N34XL XLFG 300HP 80HRS
> Unchained Caps :)
> Sent from IPhone 4
>
> On Jan 30, 2012, at 10:52 AM, John Dibble<aminetech at bluefrog.com>  wrote:
>
>> That's what I thought.
>>
>> Scott Derrick wrote:
>>
>>> 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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