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  #11  
Old 09-23-2014, 07:48 AM
Mich48041 Mich48041 is offline
 
Join Date: Apr 2008
Location: Riley TWP MI
Posts: 3,070
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In my job as an industrial electrician, it was common procedure to use heat conductive grease when installing rectifiers and solid state relays. Open any electronic equipment and notice that heat producing solid state devices will be mounted with either heat conductive insulating gaskets or heat conductive grease or both. The only downside to using heat conductive grease besides the minor cost and labor and mess, is that paint will not adhere to any areas contaminated with grease, which might contain silicon. The rectifier/voltage-regulator in my RV-12 is mounted with heat conductive grease and is securely bolted to the original location on the firewall shelf. It has not failed (yet).
Joe Gores
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  #12  
Old 09-28-2014, 12:58 PM
BigJohn BigJohn is offline
 
Join Date: Nov 2008
Location: Gloversville, NY
Posts: 1,587
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Quote:
Originally Posted by hthaman View Post
Has someone installed a regulator recently ?? Per page 46-22 Regulator needs to be installed inside ( F1202B) ( former location F1201B - FWF outside )...........
Where did you get page 46-22? My regulator bit the dust today and as long as I have to replace it I will go to the new location if I can find the instructions.
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RV-12 N37JP 120176 Flying since 2012.
One Week Wonder Build Team, OSH 2018.
VAF paid through 10/2019.
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  #13  
Old 09-28-2014, 09:40 PM
hthaman hthaman is offline
 
Join Date: Jan 2014
Location: IA
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I installed it last week, Regulator cable and WH-p761 Yellow cable go inside through the right side grommet ( grommet for control cables ) and install the regulator next to the fan area.

thanks
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  #14  
Old 09-29-2014, 02:33 PM
todehnal todehnal is offline
 
Join Date: Jan 2005
Location: Kentucky Lakes area in KY
Posts: 947
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I sure would like to move my regulator while I have the top off of the radio panel for the ADSB installation. I may drag my feet a little in hopes that the new mounting instructions make it into Van's RV-12 prints revision section soon. No troubles, so far, but getting that temperature sensitive device into a cooler environment sounds like a winner.

Tom
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2013- RV12, Kit #119. N123M First flight Nov21. It's a keeper!
1998- RV-9 tail kit, built and sold
1989- RV-6 tail kit, built and sold
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  #15  
Old 09-29-2014, 03:35 PM
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Bill_H Bill_H is offline
 
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Location: Marshall TX (KASL)
Posts: 1,783
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If you will take a good pic or two of that plans page with your phone, or scan that plans page, I'd be glad to post it. Send to Billhollifield AT iname DOT com
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  #16  
Old 09-29-2014, 03:39 PM
hthaman hthaman is offline
 
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Location: IA
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will do it sometime soon.
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  #17  
Old 10-04-2014, 03:17 PM
BigJohn BigJohn is offline
 
Join Date: Nov 2008
Location: Gloversville, NY
Posts: 1,587
Default New regulator in new location, Pages 46-21,22&23, and 45A-04.

Thanks go out to Mitch Gardner for scanning and sending me the four pages from the new plans. I removed the old regulator and found that the pin in the connector from one of the alternator outputs (yellow wires) had overheated enough to melt both the connector body and the regulator housing! That was a surprise, and I suppose explains the behavior I saw before the total failure.

I mounted the new regulator per the revised plans, under the avionics shelf. It seemed nigh on to impossible to me to stuff the shielded alternator cable through the same hole in the firewall as the control cables, so I made a new hole directly below it, and that worked out fine. I printed the drilling template out to scale, and used it upside down on the floor of the avionics bay so I could drill down instead of up. I used heat transfer compound while mounting the regulator, per Joe Gores recommendation.

I checked the area after an hour's flight and the area around the unit was warm to the touch, a good thing, meaning heat is being moved to the larger structure away from the unit. The unit itself was warm, but not enough to burn my hand. Hoping this location is a winner for long life! Surely better than a few inches from the exhaust manifold!

As an aside, I spoke to Van's tech support to ask them to send me the revised plans for Section 46 and they seemed concerned that the plans would not work for a retrofit. I can assure you they do.

Go here and the next entry for pictures.
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John Peck, CFII, A&P, EAA Tech Counselor, Flight Advisor.
?Master Pilot? Award, UFO Member.
RV-12 N37JP 120176 Flying since 2012.
One Week Wonder Build Team, OSH 2018.
VAF paid through 10/2019.

Last edited by BigJohn : 10-05-2014 at 06:33 AM. Reason: Added link to pictures.
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  #18  
Old 10-04-2014, 05:58 PM
todehnal todehnal is offline
 
Join Date: Jan 2005
Location: Kentucky Lakes area in KY
Posts: 947
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Quote:
Originally Posted by BigJohn View Post
Thanks go out to Mitch Gardner for scanning and sending me the four pages from the new plans. I removed the old regulator and found that the pin in the connector from one of the alternator outputs (yellow wires) had overheated enough to melt both the connector body and the regulator housing! That was a surprise, and I suppose explains the behavior I saw before the total failure.

I mounted the new regulator per the revised plans, under the avionics shelf. It seemed nigh on to impossible to me to stuff the shielded alternator cable through the same hole in the firewall as the control cables, so I made a new hole directly below it, and that worked out fine. I printed the drilling template out to scale, and used it upside down on the floor of the avionics bay so I could drill down instead of up. I used heat transfer compound while mounting the regulator, per Joe Gores recommendation.

I checked the area after an hour's flight and the area around the unit was warm to the touch, a good thing, meaning heat is being moved to the larger structure away from the unit. The unit itself was warm, but not enough to burn my hand. Hoping this location is a winner for long life! Surely better than a few inches from the exhaust manifold!

As an aside, I spoke to Van's tech support to ask them to send me the revised plans for Section 46 and they seemed concerned that the plans would not work for a retrofit. I can assure you they do.
Fantastic!! Hey John, any chance of getting a copy of the plans?? I sure would like to move mine while in the process of doing the ADSB mod.......Tom
__________________
2013- RV12, Kit #119. N123M First flight Nov21. It's a keeper!
1998- RV-9 tail kit, built and sold
1989- RV-6 tail kit, built and sold
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  #19  
Old 10-04-2014, 07:10 PM
hthaman hthaman is offline
 
Join Date: Jan 2014
Location: IA
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Last edited by hthaman : 10-04-2014 at 08:13 PM.
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  #20  
Old 10-05-2014, 10:02 AM
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Bill_H Bill_H is offline
 
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Location: Marshall TX (KASL)
Posts: 1,783
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Some nice folks mailed me pics of the new plans pages showing the modified voltage regulator location. Here they are. Sorry about the delay!








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