REFLECTOR: fuel cap

Mon Jan 30 15:59:30 CST 2012

Hi Lou,
You can gound your fuel tanks via your exhaust stacks, just clamp to them.
Least this was conventional wisdom from my days as an EZ Driver. We have
steel fuel lines to the engine plus the fuel itself will conduct the static
electric charge away from the tank to the engine block, the exhaust pipes
carry it from there. I grounded my bird for fueling for many years to the
exhaust stacks in very hot and low humidity conditions (high static charge
environment) in the desert southwest with no hint of any static discharge
problems. Pretty handy really. I never noticed the fuel truck clamps
marring my exhaust stacks, they have a brass inset.

Mark B. Magee
N34XL XLFG 300HP 80HRS

On Mon, Jan 30, 2012 at 1:00 PM, Lou Stedman <stedmanlou at roadrunner.com>wrote:

> I have mine chained with a stainless steel which goes down into the tank.
> Whenever I gas up I always hook the ground cable to the stainless cable
> which is in my tank. I am assuming that will provide a good ground. How do
> you get a ground?
>
> -----Original Message----- From: Mark Magee
> Sent: Monday, January 30, 2012 12:53 PM
>
> To: Velocity Aircraft Owners and Builders list
> Subject: Re: REFLECTOR: fuel cap
>
> 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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