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  #11  
Old 01-15-2017, 03:05 AM
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f1rocket f1rocket is offline
 
Join Date: Jan 2005
Location: Martinsville, IN
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Quote:
Originally Posted by Eddie B View Post

PPS - Is it standard practice to log this change in the Engine or the Airframe logbook or both?
Typically, the airframe logbook. Remember that the JD regulator charges ar a higher rate than the Ducati so if you have a high voltage alarm limit set, you may need to bump that up a little. I did on my -12.

Glad you get your issue resolved. Keep us updated on how it goes over time.
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  #12  
Old 01-19-2017, 06:04 AM
Fast Eddie B Fast Eddie B is offline
 
Join Date: Dec 2016
Location: Mineral Bluff, GA
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Got to the hangar and made a short flight yesterday.

Voltage readings (engine off):

Battery (Aerovoltz lithium iron) with Master Off: 13.25v
Battery with Master On: 13.11v
Garmin: 12.7v
Panel 12v outlet: 12.97v
Panel voltmeter: about 13.8v (a little parallax error in photo below)

Engine off:




Went flying, and with just the strobes and landing light on, saw the voltage gradually go from about 13.7v to 14v where it seemed to level off:



This is I think about .3v higher than the Ducati. Note the panel mounted voltmeter is consistently showing about 1v high.

I was a little surprised at the high resting voltage - I'm used to seeing about 12.7v on most lead-acid batteries. But the Aerovoltz data sheet says that higher voltage is typical, and the 14v charging rate is in the acceptable range:



Anyway, so far, so good. If anything changes, I'll report back.
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  #13  
Old 01-19-2017, 06:23 AM
BillL BillL is offline
 
Join Date: Sep 2007
Location: Central IL
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Default Be advised . .

Quote:
Originally Posted by Fast Eddie B View Post
Got to the hangar and made a short flight yesterday.

Voltage readings (engine off):

Battery (Aerovoltz lithium iron) with Master Off: 13.25v
Battery with Master On: 13.11v
Ed, EarthX has documented an AC content limit of the charging power and the PM alternator/VR does NOT meet that specification.

You might do some research on that since you have a LiFeP battery. And/Or be sure your battery is in a sealed metal container with an external vent in case of a "thermal event" . AeroVoltz will not be special in this regard. Be safe up there.
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  #14  
Old 01-19-2017, 09:47 AM
Fast Eddie B Fast Eddie B is offline
 
Join Date: Dec 2016
Location: Mineral Bluff, GA
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Quote:
Originally Posted by BillL View Post
Ed, EarthX has documented an AC content limit of the charging power and the PM alternator/VR does NOT meet that specification.

You might do some research on that since you have a LiFeP battery. And/Or be sure your battery is in a sealed metal container with an external vent in case of a "thermal event" . AeroVoltz will not be special in this regard. Be safe up there.
Thanks, Bill.

Can you maybe provide a link to what the issues are?

Here's my installation in the nose of the plane:



(the photo is to remind me of the orientation of the terminals, which is opposite from stock)

I'm just using the bracket from the original lead-acid battery with a block below the Aerovoltz to take up the slack. Would not be too hard to fabricate a battery box to enclose it, if that was really necessary.

Just curious, do most builders/owners enclose their lithium-iron batteries? If so, is there a source for the enclosures or do you have to roll your own?
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  #15  
Old 09-21-2017, 07:10 AM
Fast Eddie B Fast Eddie B is offline
 
Join Date: Dec 2016
Location: Mineral Bluff, GA
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Thought I'd provide an update:

About 15 hours flown over the last 8 months or so.

The John Deere voltage regulator in my Sky Arrow has worked perfectly over that time frame, cranking out almost exactly 14v as indicated by my Garmin.

Thanks again for all the help, and yes - I definitely need to fly more!
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  #16  
Old 09-21-2017, 10:55 AM
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tomkk tomkk is offline
 
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Quote:
Originally Posted by Fast Eddie B View Post
Thought I'd provide an update:

About 15 hours flown over the last 8 months or so.

The John Deere voltage regulator in my Sky Arrow has worked perfectly over that time frame, cranking out almost exactly 14v as indicated by my Garmin.

Thanks again for all the help, and yes - I definitely need to fly more!
What's the part number for the JD regulator you're using?
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  #17  
Old 09-21-2017, 07:02 PM
Fast Eddie B Fast Eddie B is offline
 
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Location: Mineral Bluff, GA
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Quote:
Originally Posted by tomkk View Post
What's the part number for the JD regulator you're using?
My logbook entry specifies #330 322 332.

This is it on Amazon, from a search of my orders:

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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  #18  
Old 09-21-2017, 08:17 PM
Mich48041 Mich48041 is online now
 
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Possible part numbers: AM101406, or MIA881279, or JDR1406
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