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jbr79r(at)yahoo.com
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 Posted: Sun Nov 07, 2010 9:09 pm Post subject: battery location change |
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Good Evening Bob
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. I am not at home so I can't consult the original diagram. Thanks as always for your expert help in these matters.
Jim
James Robinson
Glasair lll N79R
Spanish Fork UT U77
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peterjfharris(at)netspace
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| Posted: Sun Nov 07, 2010 10:25 pm Post subject: battery location change |
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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
0123456789012345678
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mrspudandcompany(at)veriz
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| Posted: Mon Nov 08, 2010 8:26 am Post subject: battery location change |
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Jim,
How far back are you moving the batteries? You may want to move the solenoids along with the batteries so as not to compromise the protection of the fat wires, afforded by the solenoids. Then you will need to bring 2 fat wires back to the original connections, for +12V and ground.
Roger
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nuckollsr
Joined: 24 Mar 2009
Posts: 95
Location: Medicine Lodge, KS
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| Posted: Wed Nov 10, 2010 6:15 am Post subject: Re: battery location change |
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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 . . .
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