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08-20-2016, 07:02 PM
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Join Date: May 2005
Location: X35 - Ocala, FL
Posts: 3,679
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Quote:
Originally Posted by tthrew
I thought you were supposed to have your radios and electronics powered off when starting. Is that idea out of date?
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Most instruments are best to leave off during start unless you have a backup power source. The EFIS that shows engine data, however, should be on, so you can verify oil pressure immediately after start. The Dynon's have built in (or built into the main harness) dedicated backup batteries. The AFS prior to the 5000 series have built in batteries. The AFS 5000 series and the G3X have a backup power inout that can be run off a separate battery that is not used to crank the engine (the TCW battery is built for this).
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Jesse Saint
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08-20-2016, 07:04 PM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,687
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The Lamar continuous duty contactor draws about 800ma (0.8a), not all that much.
Pull in and drop out voltages are rated at 8/4.5v respectively, curious what those are for the blue sea.
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Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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08-21-2016, 05:59 AM
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Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,692
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Quote:
Originally Posted by Carl Froehlich
Yep - it turns out the master solenoid is a power hog. I had two of these (one for each battery) so they were consuming more power than anything else.
I now use these: https://www.amazon.com/SYSTEMS-Blue-...e+sea+solenoid
It draws only 0.13 amps for hold current. The price is too high - but I was able to find them for a lot less on eBay.
Carl
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Where DID i put that old copper knife switch?????
I remember seeing this contactor noted somewhere in Aeroelectric docs. Very nice, but pricey as you said. Still thought about it. Mine is a B&C S701-1. My load chart shows 1 amp for it.
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Bill Pendergrass
ME/AE '82
RV-7A: Flying since April 15, 2012. 850 hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
Unpainted, polished....kinda'... Eyeballin' vinyl really hard.
Yeah. The boss got a Silhouette Cameo 4 Xmas 2019.
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08-21-2016, 06:20 AM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 5,687
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Quote:
Originally Posted by rzbill
Where DID i put that old copper knife switch?????
I remember seeing this contactor noted somewhere in Aeroelectric docs. Very nice, but pricey as you said. Still thought about it. Mine is a B&C S701-1. My load chart shows 1 amp for it.
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The Eaton unit is the one you are thinking of:
http://www.skygeek.com/eaton-aerospa...omagnetic.html
__________________
Walt Aronow, DFW, TX (52F)
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs, New Titan IO-370, Bendix Mags
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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08-21-2016, 06:40 AM
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Join Date: Nov 2005
Location: Asheville, NC
Posts: 2,692
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Quote:
Originally Posted by Walt
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You made me look..
My memory was off. I was thinking of a CII Technologies EV-200 contactor that Bob N was suggesting for a starter contactor. Very similar form factor to the Blue Sea but different application so the coil will be different.
__________________
Bill Pendergrass
ME/AE '82
RV-7A: Flying since April 15, 2012. 850 hrs
YIO-360-M1B, mags, CS, GRT EX and WS H1s & A/P, Navworx
Unpainted, polished....kinda'... Eyeballin' vinyl really hard.
Yeah. The boss got a Silhouette Cameo 4 Xmas 2019.
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08-21-2016, 06:11 PM
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Join Date: Dec 2007
Location: Dogwood Airpark (VA42)
Posts: 2,597
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Quote:
Originally Posted by wm708
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Latching solenoids tend to not be suitable for aircraft use. While it might stay latched with power removed, it could open on a minor G bounce. Without any specs you cannot tell.
Carl
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