Today's Message Index:
----------------------
1. 05:18 AM - fuel tank progress (Douwe Blumberg)
2. 07:48 AM - Magnetic Pickup for Crovair (Barry Davis)
3. 10:07 AM - Re: Fuel tank progress/welding..... (aerocarjake)
4. 11:21 AM - Re: fuel tank progress (aerocarjake)
5. 10:08 PM - Re: fuel tank progress (taildrags)
Message 1
INDEX | Back to Main INDEX |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | fuel tank progress |
Hey Jake,
Looks like a solid design and really nice sketch. You'll likely have to run
the bolts in the other way but that'll make itself evident as you do it if
the need arises.
Yes, definitely ground it. You basically want a path from the tank down to
the engine which is the largest chunk of metal in the plane, and where you
will be grounding it while fueling. You can use grounding cable or other
metal parts/cables/straps etc which were going that direction anyways and
just build up a good solid "path" . if I remember correctly, since my fuel
lines were running that direction anyways, I used them as part of the
grounding system.
Douwe
Message 2
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Magnetic Pickup for Crovair |
I attached an invoice from the company that supplied our pickups. Some
people use the smooth one and fab up a tube on a bracket with a set screw to
hold the sensor. This is the way WW did it at one time. After a lot of
searching, I found the same sensor that is threaded and uses two nuts to
adjust. This really works great as all you need is a bracket with a hole in
it. Just slide in the sensor and tighten down the nuts when the adjustment
is set. On the other one, the set screw dents the side of the sensor if it
is tightened down too much. This dent makes it almost impossible to adjust
tiny amounts unless you keep rotating it around to find an undented spot.
I'm not making a recommendation, just what we learned from experience on the
Big Piets.
Barry
NX973BP
Message 3
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: Fuel tank progress/welding..... |
Thx for the feedback, thoughts. I had not been particularly aware of the grounding
aspect so I'll defiantly make a "pad" to mount a grounding strap - and run
a strap to the frame - thanks!
--------
Jake Schultz - curator,
Newport Way Air Museum (OK, it's just my home)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=447544#447544
Message 4
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: fuel tank progress |
thx Douwe - good thoughts..! Appreciate it...........
--------
Jake Schultz - curator,
Newport Way Air Museum (OK, it's just my home)
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=447545#447545
Message 5
INDEX | Back to Main INDEX |
PREVIOUS | Skip to PREVIOUS Message |
NEXT | Skip to NEXT Message |
LIST | Reply to LIST Regarding this Message |
SENDER | Reply to SENDER Regarding this Message |
|
Subject: | Re: fuel tank progress |
Grounding while fueling is a subject of interest to me. My last BFR was flown
in a beautiful and brand-new C-172 with leather upholstery and all the options,
that probably has as many dollars invested in the glass panel as in the entire
rest of the airplane. I have never flown anything like it before or since.
It belonged to a very high-time and competent pilot and instructor who had for
many years owned and operated an FBO. When we pulled it up to the pump to
fuel it up, he pshaw'd the notion of bothering with the grounding cable and clamp,
saying that he had never heard of a fire caused by not grounding the airplane
while refueling. OK... it's his plane.
When I pull my Air Camper to the pump, I usually clamp the grounding clamp onto
the open end of the exhaust stack, figuring that the stack is solidly bolted
to the engine and the engine is grounded to the metal firewall through a braided
strap that I installed myself for just that purpose. Everything of interest
to me (no electrics on my plane) uses the firewall as the common grounding reference.
The P-lead shields land on the same grounding bus on the firewall.
The welded aluminum fuel tank on Scout is not grounded to the common grounding
point, so it may really not do a lot of good to clamp the fueling ground cable
to my exhaust stack unless I trace my way back, metal-to-metal, through the carb
mounting studs to the carb and then to the metal AN fuel line fitting to the
braided jacket on the fuel line to the metal gascolator, to the metal mount
of the gascolator to the firewall. It might be a good path and it might not,
and I can test it with an ohmmeter, but it would sure be easy to make a direct
path by installing a piece of ground braid directly from the tank to the firewall
grounding bus. I know that there are already plenty of things to worry
about without over-thinking the grounding issue, but it's food for thought. Flowing
fluid does create a static charge, and as the girl on Hee-Haw used to say,
"and that's a fact!"
--------
Oscar Zuniga
Medford, OR
Air Camper NX41CC "Scout"
A75 power
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=447550#447550
Other Matronics Email List Services
These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.
-- Please support this service by making your Contribution today! --
|