AeroElectric-List Digest Archive

Tue 07/10/07


Total Messages Posted: 8



Today's Message Index:
----------------------
 
     1. 10:42 AM - Re: Source for LED's (Eric M. Jones)
     2. 12:49 PM - Re: FW-Eng ground (Eric M. Jones)
     3. 02:08 PM - Re: Re: FW-Eng ground (Ivor Phillips)
     4. 02:17 PM - Z-19 ()
     5. 03:31 PM - Re: Z-19 (RV Builder (Michael Sausen))
     6. 03:58 PM - Re: Z-19 (PSILeD@aol.com)
     7. 05:30 PM - Garmin 430 transmitter problem (David Abrahamson)
     8. 05:55 PM - Re: Z-19 (LarryMcFarland)
 
 
 


Message 1


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    Time: 10:42:08 AM PST US
    Subject: Re: Source for LED's
    From: "Eric M. Jones" <emjones@charter.net>
    Mini and bayonet bulbs can be substituted with LEDs from: http://www.ledtronics.com/ -------- Eric M. Jones www.PerihelionDesign.com 113 Brentwood Drive Southbridge, MA 01550 (508) 764-2072 emjones@charter.net Read this topic online here: http://forums.matronics.com/viewtopic.php?p=123070#123070


    Message 2


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    Time: 12:49:48 PM PST US
    Subject: Re: FW-Eng ground
    From: "Eric M. Jones" <emjones@charter.net>
    > The $10 voltmeter says "7.3 Ohms" give or take - and I wonder if > that is in the ball park in view of the braid length - otherwise it's FW to > eng mount which may be worse......Best of regards Ferg Ferg, 7.3 Ohms is not even close to reasonable. You want 0.0073 Ohms maybe. Your meter won't measure it. Measuring very low resistances is not for the faint-hearted. Basically you should run high current through the part and measure the voltage drop. This is done quickly (often by a pulse) because the part changes resistance due to heating. Then R equals I/E. Measuring very high resistances is hard too. They use "meggers" which apply kilovolts, then they measure current through the part. Cool. The engine ground strap is a needless weak point. Some improvement is possible. "I have a truly marvellous proof of this proposition which this margin is too narrow to contain." "No one travelling on a business trip would be missed if he failed to arrive." - Thorstein Veblen -------- Eric M. Jones www.PerihelionDesign.com 113 Brentwood Drive Southbridge, MA 01550 (508) 764-2072 emjones@charter.net Read this topic online here: http://forums.matronics.com/viewtopic.php?p=123094#123094


    Message 3


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    Time: 02:08:08 PM PST US
    From: "Ivor Phillips" <ivor.phillips@ntlworld.com>
    Subject: Re: FW-Eng ground
    Hi Ferg I ran a welding cable through the ring mount to one of the two bolt holes just below where the vacuum pump is fitted, There is good continuity back to the forest of tabs, and a relatively short cable run, but long enough to allow for engine movement, Regards Ivor


    Message 4


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    Time: 02:17:33 PM PST US
    Subject: Z-19
    From: <longg@pjm.com>
    I would like to hear from anyone who has implemented this diag successfully. I am working on a Subaru with two batteries, one alternator and two fuel pumps. I would like to hear about your could of done, should of done, could do better next time etc. How many gotchas are in the design and so on. Pictures would be great if you have them. Some of us pilots are pessimists even before we wake up! Thanks, Glenn


    Message 5


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    Time: 03:31:01 PM PST US
    From: "RV Builder (Michael Sausen)" <rvbuilder@sausen.net>
    Subject: Z-19
    Many others out there are going with Z-19 so please share your experiences with the list. Bob can't improve things if he doesn't know about it! Michael Sausen -10 #352 Limbo -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of longg@pjm.com Sent: Tuesday, July 10, 2007 4:11 PM Subject: AeroElectric-List: Z-19 I would like to hear from anyone who has implemented this diag successfully. I am working on a Subaru with two batteries, one alternator and two fuel pumps. I would like to hear about your could of done, should of done, could do better next time etc. How many gotchas are in the design and so on. Pictures would be great if you have them. Some of us pilots are pessimists even before we wake up! Thanks, Glenn


    Message 6


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    Time: 03:58:49 PM PST US
    From: PSILeD@aol.com
    Subject: Re: Z-19
    I am going with the Z-19 Rear batteries in an RV-8 with the 2.5 SC engine with Supercharger. My question is why not be able to operate the second Fuel Pump from either battery? Seems like it would give another option for keeping the fuel flowing. Mine will be wired this way. Thanks to Bob N. for all he does. Paul ************************************** See what's free at http://www.aol.com.


    Message 7


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    Time: 05:30:42 PM PST US
    From: David Abrahamson <dave@abrahamson.net>
    Subject: Garmin 430 transmitter problem
    My 430 was transmitting fine for the first 28 hours of my phase I period, but at the end of the last flight was inaudible to approach. After flight, I pulled and re-docked the 430 and compared its transmissions to the SL30's in the same panel (same freq, same volume level, same type antennas, same antenna location on the airplane, engine off) and got a "like the SL30 but scratchy" from one station, and "4 by 4 on the SL30 and 3 by 3 on the 430" from another. Maybe significantly, the headset side tone from the 430 is about half the volume of the SL30's, without touching settings on the headset or GMA340, obviously. All other 430 functions work fine, to include reception and VOR/ILS freqs. Has anyone had a similar/identical problem with their 430, and if so, what solutions were successful? Thanks, David


    Message 8


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    Time: 05:55:42 PM PST US
    From: LarryMcFarland <larry@macsmachine.com>
    Subject: Re: Z-19
    Hi Glenn, I don't know about the diagram number, but your items match mine and I did wire things very closely to the AeroElectric diagrams. Absolutely no problems so far, but for one early on, not having a contactor replacing my internal starter relay power. The link below perhaps offers a different schematic view. http://www.macsmachine.com/images/electrical/full/primary-wiring.gif Lots of images on the engine page and electrical page Good luck, Larry McFarland 601HDS - Subaru power, one alternator and 4 fuel pumps at www.macsmachine.com longg@pjm.com wrote: > > > I would like to hear from anyone who has implemented this diag > successfully. I am working on a Subaru with two batteries, one > alternator and two fuel pumps. I would like to hear about your could of > done, should of done, could do better next time etc. How many gotchas > are in the design and so on. Pictures would be great if you have them. > > Some of us pilots are pessimists even before we wake up! > > Thanks, > Glenn > > >




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