---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Thu 07/26/12: 4 ---------------------------------------------------------- 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 _____________________________________ Time: 03:38:27 AM PST US Subject: Re: AeroElectric-List: fueling-created static discharge prevention From: bob noffs thanks paul. bob noffs On Wed, Jul 25, 2012 at 10:55 PM, Paul Millner 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 _____________________________________ Time: 05:46:01 AM PST US Subject: AeroElectric-List: Inspection 'scopes From: "Eric M. Jones" 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 _____________________________________ Time: 04:21:09 PM PST US From: Hadley Heinrichs Subject: Re: AeroElectric-List: 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 =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 wrote:=0A>=0A>--> AeroElectric-Li st message posted by: Paul Millner =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 _____________________________________ Time: 08:15:28 PM PST US From: "Bill Hibbing" Subject: Re: AeroElectric-List: 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" Sent: Saturday, July 21, 2012 9:25 AM Subject: RE: AeroElectric-List: troubleshooting help needed > > > 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 > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.