AeroElectric-List Digest Archive

Wed 11/10/10


Total Messages Posted: 8



Today's Message Index:
----------------------
 
     1. 06:21 AM - Re: battery location change (nuckollsr)
     2. 06:26 AM - Jabiru 3300 OV protection (Robert L. Nuckolls, III)
     3. 08:05 AM - Re: Speaking of Wig Wags (Speedy11@aol.com)
     4. 09:18 AM - Re: Speaking of Wig Wags... (jonlaury)
     5. 11:05 AM - Re: Squeaky Wheeling (jonlaury)
     6. 01:27 PM - Re: Jabiru 3300 OV protection (Peter Harris)
     7. 07:10 PM - Re: Jabiru 3300 OV protection (Robert L. Nuckolls, III)
     8. 08:27 PM - Re: Jabiru 3300 OV protection (Peter Harris)
 
 
 


Message 1


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    Time: 06:21:30 AM PST US
    Subject: Re: battery location change
    From: "nuckollsr" <bob.nuckolls@aeroelectric.com>
    I have the 2 alternator , 2 batteries, setup in my Glasair. this has been a problem free system since it's inception. I am needing to change the location of the batteries for weitht and balance and interference problems. Currently the batteries and the all the control solenoids are on the engine side of the firewall with 2 power and 1 gnd thru the firewall connections. Do I need to add 2 more thru the firewall connections to get the power back out to the solenoids from the repositioned batteries or is there a more efficient way to reconfigure the system. You'll need fat-wire feeders from each battery plus one for a ground to bring the connections aft to the batteries. I'd leave the crossfeed contactor on the firewall and use it as a tie-point for the battery feeders. Battery contactors and any battery busses move back with the batteries. Bob . . . Read this topic online here: http://forums.matronics.com/viewtopic.php?p=318815#318815


    Message 2


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    Time: 06:26:27 AM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Jabiru 3300 OV protection
    Hi Bob, Do you have a protection circuit to protect against regulator-rectifier failure for the PM alternator as used on the Jabiru 3300? I have installed the OV crowbar circuit but does this stop voltage excess say 15-20V? I am getting interference affecting the ECU as I have fuel injected the engine. I will test the Vreg output in a couple of days but need to be sure I have this protection if possible anyway. Thanks Peter Quickie Q-200Jabiru It would the be the same technique illustrated in . . . http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z16M.pdf OV protection systems for 14v airplanes are designed to shut the alternator down and latch it off if the bus voltage exceeds 16.0 to 16.5 volts. Have you had a voltmeter on the system. This is the FIRST thing you do for iniital operations of any new system . . . see if the alternator is even working and deduce the voltage regulator setting. Bob . . .


    Message 3


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    Time: 08:05:42 AM PST US
    From: Speedy11@aol.com
    Subject: Re: Speaking of Wig Wags
    Tom, You can't wig-wag those HIDs. Stan Sutterfield I purchased and installed a new, identical wig wag unit from a local auto parts store (Tridon EL13 A-2) No change... I am using two Trail Tech HID lights.


    Message 4


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    Time: 09:18:08 AM PST US
    Subject: Re: Speaking of Wig Wags...
    From: "jonlaury" <jonlaury@impulse.net>
    Tom I'd like to have the flasher unit if it's still available... and I'll "trade" for my 40 Littlefuse modular, ATO, fuse holders w/connectors that any other Matronics contributor would like to have. See: http://www.littelfuse.com/data/en/Data_Sheets/155_153PCMount.pdf Read this topic online here: http://forums.matronics.com/viewtopic.php?p=318831#318831


    Message 5


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    Time: 11:05:44 AM PST US
    Subject: Re: Squeaky Wheeling
    From: "jonlaury" <jonlaury@impulse.net>
    Thanks, Bob. J Read this topic online here: http://forums.matronics.com/viewtopic.php?p=318846#318846


    Message 6


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    Time: 01:27:56 PM PST US
    From: "Peter Harris" <peterjfharris@netspace.net.au>
    Subject: Jabiru 3300 OV protection
    Thanks Bob Yes I have a voltmeter and have not noticed a problem but I will fit the S704-1 for protection. The EFI system has worked fine for 3 years but now it seems that noise is boosting the MAP signal which no longer follows the fuel maps and it runs over rich. I will also test with alternator disconnected. I will report back when solved and hope it may help someone else. Thanks Peter _____ From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L. Nuckolls, III Sent: 11 November 2010 00:26 Subject: AeroElectric-List: Jabiru 3300 OV protection Hi Bob, Do you have a protection circuit to protect against regulator-rectifier failure for the PM alternator as used on the Jabiru 3300? I have installed the OV crowbar circuit but does this stop voltage excess say 15-20V? I am getting interference affecting the ECU as I have fuel injected the engine. I will test the Vreg output in a couple of days but need to be sure I have this protection if possible anyway. Thanks Peter Quickie Q-200Jabiru It would the be the same technique illustrated in . . . http://www.aeroelectric.com/PPS/Adobe_Architecture_Pdfs/Z16M.pdf OV protection systems for 14v airplanes are designed to shut the alternator down and latch it off if the bus voltage exceeds 16.0 to 16.5 volts. Have you had a voltmeter on the system. This is the FIRST thing you do for iniital operations of any new system . . . see if the alternator is even working and deduce the voltage regulator setting. Bob . . .


    Message 7


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    Time: 07:10:32 PM PST US
    From: "Robert L. Nuckolls, III" <nuckolls.bob@aeroelectric.com>
    Subject: Jabiru 3300 OV protection
    At 03:23 PM 11/10/2010, you wrote: >Thanks Bob >Yes I have a voltmeter and have not noticed a problem but I will fit >the S704-1 for protection. The EFI system has worked fine for 3 >years but now it seems that noise is boosting the MAP signal which >no longer follows the fuel maps and it runs over rich. I will also >test with alternator disconnected. >I will report back when solved and hope it may help someone else. Hmmmm . . . engine sensors tend to offer DC signals that are easy to filter. I suspect that alternator 'noise' is not root cause for the noted errors. But I could be wrong. Let us know what you find and holler if we can help. Bob . . .


    Message 8


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    Time: 08:27:46 PM PST US
    From: "Peter Harris" <peterjfharris@netspace.net.au>
    Subject: Jabiru 3300 OV protection
    Thanks again Bob, It turns out I do have the PM alternator disconnect relay S704-1 I had forgotten. I suppose if the rectifier is shot it would pass up to 16VAC. The supply voltage from ECU to MAP sensor is 5VDC which I confirmed static. Not sure if the ECU signal input is filtered but it should be as you say. I will report back when tried with alternator disconnected. Peter _____ From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Robert L. Nuckolls, III Sent: 11 November 2010 13:09 Subject: RE: AeroElectric-List: Jabiru 3300 OV protection At 03:23 PM 11/10/2010, you wrote: Thanks Bob Yes I have a voltmeter and have not noticed a problem but I will fit the S704-1 for protection. The EFI system has worked fine for 3 years but now it seems that noise is boosting the MAP signal which no longer follows the fuel maps and it runs over rich. I will also test with alternator disconnected. I will report back when solved and hope it may help someone else. Hmmmm . . . engine sensors tend to offer DC signals that are easy to filter. I suspect that alternator 'noise' is not root cause for the noted errors. But I could be wrong. Let us know what you find and holler if we can help. Bob . . .




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