Today's Message Index:
----------------------
1. 03:38 AM - Re: fueling-created static discharge prevention (bob noffs)
2. 05:46 AM - Inspection 'scopes (Eric M. Jones)
3. 04:21 PM - Re: fueling-created static discharge prevention (Hadley Heinrichs)
4. 08:15 PM - Re: troubleshooting help needed (Bill Hibbing)
Message 1
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| Subject: | Re: fueling-created static discharge prevention |
thanks paul.
bob noffs
On Wed, Jul 25, 2012 at 10:55 PM, Paul Millner <millner@me.com> wrote:
>
>
> On 7/10/2012 11:37 AM, bob noffs wrote:
>
>> lately i have been filling my plane out of 5 gal. plastic cans and i am
>> finding it not too time consuming. the biggest reason is higher octane
>> mogas than i can get at the airport.
>> anyway.............i need some advice on grounding.i have a 12 volt pump
>> mounted and it is powered by a battery 20 feet away. i have a handheld
>> switch . i set the plastic can on the table and fuel is transferred thru
>> vinyl tubing. at the airplane end is a metal filter. pumps a gallon a
>> minute. i plan to set up a ground to the exhaust pipe [all tanks are
>> grounded to the engine] but i do not know how to ground the pump or
>> hoses. any advice would be appreciated.
>>
>
> Hi Bob,
>
> Technically, it's BONDING you're interested in... grounding isn't much
> important unless you've experiencing lightening...
>
> You need some metal screen at the 'can', a conductive hose (run a copper
> wire through it that's the best you can do) and a connection at the tank
> inlet on the airplane. All those nee to be bonded together electrically.
>
> Paul
>
> --
> Please note my new email address!
> millner@me.com
>
>
Message 2
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| Subject: | Inspection 'scopes |
FYI:
Flexible Endosopes with lighting and video is very cheap now. They have now become
USB pluggable and simply plug into your laptop computer...no screen, no nothing.
See DealExtreme.
http://www.dealextreme.com/p/waterproof-usb-2-0-cmos-300kp-4-led-illuminated-snake-camera-endoscope-110228?item=8
$36.80 FREE SHIPPING (Holy criminy!)
Do not archive
--------
Eric M. Jones
www.PerihelionDesign.com
113 Brentwood Drive
Southbridge, MA 01550
(508) 764-2072
emjones(at)charter.net
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=379219#379219
Message 3
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| Subject: | Re: fueling-created static discharge prevention |
i have a similar issue and my idea is to use a cable just like the AVGAS pu
mp...grounded to the bolts that hold up the hanger=0A=0A=0A=0A=0A>_________
_______________________=0A> From: bob noffs <icubob@gmail.com>=0A>To: aeroe
lectric-list@matronics.com t =0A>Sent: Thursday, July 26, 2012 3:36 AM=0A>S
ubject: Re: AeroElectric-List: fueling-created static discharge prevention
=0A> =0A>=0A>thanks paul.=0A>-bob noffs=0A>=0A>=0A>On Wed, Jul 25, 2012 a
t 10:55 PM, Paul Millner <millner@me.com> wrote:=0A>=0A>--> AeroElectric-Li
st message posted by: Paul Millner <millner@me.com>=0A>>=0A>>=0A>>On 7/10/2
012 11:37 AM, bob noffs wrote:=0A>>=0A>>-lately i have been filling my pl
ane out of 5 gal. plastic cans and i am finding it not too time consuming.
the biggest reason is higher octane mogas than i can get at the airport.=0A
>>>-anyway.............i need some advice on grounding.i have a 12 volt p
ump mounted and it is powered by a battery 20 feet away. i have a handheld
switch . i set the plastic can on the table and fuel is transferred thru vi
nyl tubing. at the airplane end is a metal filter. pumps a gallon a minute.
i plan to set up a ground to the exhaust pipe [all tanks are grounded to t
he engine] but i do not know how to ground - the pump or hoses. any advic
e would be appreciated.=0A>>>=0A>>Hi Bob,=0A>>=0A>>Technically, it's BONDIN
G you're interested in... grounding isn't much important unless you've expe
riencing lightening...=0A>>=0A>>You need some metal screen at the 'can', a
conductive hose (run a copper wire through it that's the best you can do) a
nd a connection at the tank inlet on the airplane. -All those nee to be b
onded together electrically.=0A>>=0A>>Paul=0A>>=0A>>-- =0A>>Please note my
new email address!=0A>>millner@me.com=0A>>=0A>>=0A>>=======
=====0A>>-List" target="_blank">http://www.matronics.com/Navigato
r?AeroElectric-List=0A>>=================
====================0A>>http://forums
.matronics.com=0A>>==================
===================0A>>le, List Admin.
=0A>>="_blank">http://www.matronics.com/contribution=0A>>=====
======== =0A>=0A>
Message 4
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| Subject: | Re: troubleshooting help needed |
OK, here's an update on what I've found without the engine running and using
the B&C LR3C troubleshooting checklist.
Step one gave me zero ohms resistance from the battery (-) to LR3C pin 7 and
the same from the battery (-) to the engine case.
Step two gave me a battery bus voltage of 12.64v and a pin 3 voltage of
12.62v.
Step three gave me a pin 6 voltage of 12.20, well within the 0.5v tolerance.
So far so good.
Step four gave me a pin 4 voltage of 11.20v, well within the desired range.
Step five. Here's where the fun begins. I measured the voltage at the
field terminal and it was zero. Thinking that there may be a continuity
problem I pulled the alternator field lead off the alternator and checked
again...no voltage. I turned off the power and checked the continuity and
found it was good. I also checked the alternator field resistance and it
came in at 30.6 ohms.
So now I think I may have some sort of a problem here so I hooked everything
back up and went back to step 4 and checked pin 4 again. This time it was
1.73 volts at both pin 4 and at the alternator field terminal.
The folks at B&C are at Oshkosh right now so getting hold of them might be
difficult but maybe Bob can weigh in again on this one.
Bill
Glasair SIIS-FT
----- Original Message -----
From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
Sent: Saturday, July 21, 2012 9:25 AM
Subject: RE: AeroElectric-List: troubleshooting help needed
> <nuckolls.bob@aeroelectric.com>
>
> At 08:33 PM 7/20/2012, you wrote:
>
> [Luckey]
> Bob, is that correct - shouldn't Field & Bus voltage oppose each other?
> i.e. as Bus voltage goes up, Field current should go down?
>
> It depends on what is being held constant and what
> is being adjusted.
>
> If SYSTEM LOAD is the variable, then yes . . . the
> REGULATOR senses an INCREASE in bus voltage and
> reacts by REDUCING field voltage.
>
> In this instance, we're observing changes in
> system performance while the load is constant.
> If the field voltage rises in concert with the
> bus voltage, then the regulator is commanding
> that rise due to internal failure or mis-information
> in the voltage sense path and the alternator
> is performing normally.
>
> If the bus voltage falls while the field voltage
> rises, then the regulator is flogging a crippled
> alternator without success.
>
>
> Bob . . .
> >
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
>
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