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Date: Mon, 02 Jul 2012 21:34:44 -0400
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From: Gary Casey <casey.gary@yahoo.com>
Reply-To: Gary Casey <casey.gary@yahoo.com>
Subject: Static discharge protection
In-Reply-To: <listdigest-5634327@logan.com>
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I changed the name of the thread - hope no one minds. =C2=A0I have an ES th=
at had the filler necks installed when I closed the wings, and, of course, =
it's all glass and nonconductive. =C2=A0Too late to ground the filler neck.=
 =C2=A0So I connected a small chain to the shell of the fuel level sensor, =
which is positively connected to "building ground." =C2=A0This chain is lon=
g enough to lay on the bottom of the tank and is attached to the fuel cap a=
djusting screw. =C2=A0My practice is to touch the fuel nozzle to the cap be=
fore removing and then keeping contact between the nozzle and filler neck w=
hile fueling. =C2=A0The idea is that the chain, going from top to bottom of=
 the tank, will dissipate any charge that builds up in the fuel during fuel=
ing. =C2=A0Not too elegant and I'm not sure if it does any good, but it did=
n't cost or weigh very much and didn't take much time to implement.=0AGary =
Casey=0A=0A=C2=A0 OTOH, I figure better safe than sorry. I thought about th=
is quite a bit while building the Velocity and the picture shows my solutio=
n for the IV-P. Rather than try to ground the entire tank I made a cylinder=
 of expanded copper mesh, sewed with copper wire and soldered. The lead for=
med is attached to the filler neck and also to the cap, using a braided gro=
und strap to the adjusting nut. That connection isn=E2=80=99t perfect but i=
t also serves to keep the cap from falling off the wing. The mesh not only =
collects any charge but prevents trash from going into the tank- I=E2=80=99=
ve heard of people sticking wrappers etc. into fuel tanks during airshows. =
The mesh was attached to the tank with Jeffco and slightly compressed when =
the tank was closed up.=0A>=C2=A0=0A>=C2=A0 In use, the procedure would be =
to touch the ground wire to the cap before opening, and I=E2=80=99ll placar=
d the filler. A ground wire could also be connected to the cap lead once it=
 was open. In addition, I think Pete Cavitt=E2=80=99s method to remove surf=
ace static makes a lot of sense.=C2=A0 -Bill Wade
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<html><body><div style=3D"color:#000; background-color:#fff; font-family:bo=
okman old style, new york, times, serif;font-size:12pt"><div>I changed the =
name of the thread - hope no one minds. &nbsp;I have an ES that had the fil=
ler necks installed when I closed the wings, and, of course, it's all glass=
 and nonconductive. &nbsp;Too late to ground the filler neck. &nbsp;So I co=
nnected a small chain to the shell of the fuel level sensor, which is posit=
ively connected to "building ground." &nbsp;This chain is long enough to la=
y on the bottom of the tank and is attached to the fuel cap adjusting screw=
. &nbsp;My practice is to touch the fuel nozzle to the cap before removing =
and then keeping contact between the nozzle and filler neck while fueling. =
&nbsp;The idea is that the chain, going from top to bottom of the tank, wil=
l dissipate any charge that builds up in the fuel during fueling. &nbsp;Not=
 too elegant and I'm not sure if it does any good, but it didn't cost
 or weigh very much and didn't take much time to implement.</div><div>Gary =
Casey</div><div><br></div><div><span class=3D"Apple-style-span" style=3D"co=
lor: rgb(69, 69, 69); font-family: arial, helvetica, sans-serif; font-size:=
 13px; "><blockquote type=3D"cite" style=3D"display: block; margin-top: 1em=
; margin-right: 1em; margin-bottom: 1em; margin-left: 1em; "><div dir=3D"lt=
r"><div dir=3D"ltr"><div style=3D"font-family: Calibri; color: rgb(0, 0, 0)=
; font-size: 12pt; "><div style=3D"word-wrap: break-word; ">&nbsp; OTOH, I =
figure better safe than sorry. I thought about this quite a bit while build=
ing the Velocity and the picture shows my solution for the IV-P. Rather tha=
n try to ground the entire tank I made a cylinder of expanded copper mesh, =
sewed with copper wire and soldered. The lead formed is attached to the fil=
ler neck and also to the cap, using a braided ground strap to the adjusting=
 nut. That connection isn=E2=80=99t perfect but it also serves to keep the =
cap from
 falling off the wing. The mesh not only collects any charge but prevents t=
rash from going into the tank- I=E2=80=99ve heard of people sticking wrappe=
rs etc. into fuel tanks during airshows. The mesh was attached to the tank =
with Jeffco and slightly compressed when the tank was closed up.</div><div =
style=3D"word-wrap: break-word; ">&nbsp;</div><div style=3D"word-wrap: brea=
k-word; "></div><div style=3D"word-wrap: break-word; ">&nbsp; In use, the p=
rocedure would be to touch the ground wire to the cap before opening, and I=
=E2=80=99ll placard the filler. A ground wire could also be connected to th=
e cap lead once it was open. In addition, I think Pete Cavitt=E2=80=99s met=
hod to remove surface static makes a lot of sense.&nbsp; -Bill Wade</div></=
div></div></div></blockquote></span></div>  </div></body></html>
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