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  #11  
Old 08-20-2016, 07:02 PM
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Jesse Jesse is offline
 
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Location: X35 - Ocala, FL
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Quote:
Originally Posted by tthrew View Post
I thought you were supposed to have your radios and electronics powered off when starting. Is that idea out of date?
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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  #12  
Old 08-20-2016, 07:04 PM
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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
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  #13  
Old 08-21-2016, 05:59 AM
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rzbill rzbill is offline
 
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Quote:
Originally Posted by Carl Froehlich View Post
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
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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  #14  
Old 08-21-2016, 06:20 AM
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Originally Posted by rzbill View Post
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.
The Eaton unit is the one you are thinking of:
http://www.skygeek.com/eaton-aerospa...omagnetic.html
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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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  #15  
Old 08-21-2016, 06:40 AM
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Quote:
Originally Posted by Walt View Post
The Eaton unit is the one you are thinking of:
http://www.skygeek.com/eaton-aerospa...omagnetic.html
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.
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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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  #16  
Old 08-21-2016, 04:39 PM
wm708 wm708 is offline
 
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Thinking about using this solenoid. No power used while activated.
What you say?

http://www.partdeal.com/cole-hersee-...3ZEaAhWR8P8HAQ

Bill
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  #17  
Old 08-21-2016, 06:11 PM
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Carl Froehlich Carl Froehlich is offline
 
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Quote:
Originally Posted by wm708 View Post
Thinking about using this solenoid. No power used while activated.
What you say?

http://www.partdeal.com/cole-hersee-...3ZEaAhWR8P8HAQ

Bill
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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