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03-05-2015, 11:51 AM
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Join Date: Aug 2010
Location: Marshall TX (KASL)
Posts: 1,783
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Mike Miller - my VR was just starting to show symptoms of failure when I replaced it. (Not "kicking in" until over 3500 rpm had initially been achieved.) If I sent it to you, could you fix it so I would have a better spare? "No advertising" here but I would, say include a bottle of sweet and spicy (not dill) homemade "Pilot Pickles!" Or maybe a jar of Bill's Mad Scientist Atomic BBQ sauce...
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Bill H, RV12, N412BR "Sweetie", Skyview-equipped, KASL Marshall TX
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03-05-2015, 03:08 PM
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Join Date: Mar 2010
Location: Raleigh, NC
Posts: 863
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Quote:
Originally Posted by Bill_H
Mike Miller - my VR was just starting to show symptoms of failure when I replaced it. (Not "kicking in" until over 3500 rpm had initially been achieved.) If I sent it to you, could you fix it so I would have a better spare? "No advertising" here but I would, say include a bottle of sweet and spicy (not dill) homemade "Pilot Pickles!" Or maybe a jar of Bill's Mad Scientist Atomic BBQ sauce...
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Bill, I don't know that Mike wants to get into this business, I recommend you contact him by PM. I suspect that you will find the same defects as in mine: failed SCR solders as shown on the pictures of his post. You can remove the filling in the back of the case, it is rubbery and although a bit tedious you can tear it apart with pliers after cutting it all around the case. Once done check first the SCR solders, although they might look good, if you can see the leads of the SCR, try to pull them with your nail. Easy to redo the solders.
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03-05-2015, 03:31 PM
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Join Date: Jan 2005
Location: Kentucky Lakes area in KY
Posts: 947
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Quote:
Originally Posted by WingedFrog
Bill, I don't know that Mike wants to get into this business, I recommend you contact him by PM. I suspect that you will find the same defects as in mine: failed SCR solders as shown on the pictures of his post. You can remove the filling in the back of the case, it is rubbery and although a bit tedious you can tear it apart with pliers after cutting it all around the case. Once done check first the SCR solders, although they might look good, if you can see the leads of the SCR, try to pull them with your nail. Easy to redo the solders.
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So after you dig out the filler, and re-solder the necessary connections, what do you do about refilling that empty cavity??
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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03-05-2015, 04:24 PM
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Join Date: Mar 2010
Location: Raleigh, NC
Posts: 863
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Quote:
Originally Posted by todehnal
So after you dig out the filler, and re-solder the necessary connections, what do you do about refilling that empty cavity??
Tom
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After discussing the issue with Mike who repacked his own repaired unit, I decided to do nothing. Three reasons, first because the adequate fillers are sold in large quantities, they are expensive; second although the filling material is somewhat heat conductive, most of the heat is created on the other side of the PC board and it is clear that the filler is not intended at transferring the heat to the surface against which the Regulator is secured ; third as it will be my back-up unit, I will just make sure that it is sealed to prevent dust and humidity to come in. Once re-installed in the current location (the active unit will by then be in the cooling tunnel) I will seal it with high temp RTV. Once my active regulator has been relocated and tested I will run for a few hours on the stand-by to check that it can play its back-up function satisfactorily.
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03-14-2015, 06:08 PM
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Join Date: Sep 2006
Location: Windsor, California
Posts: 924
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Follow-up report: I installed my replacement Ducati VR under the panel shelf per Van's suggested location (see John Peck's excellent earlier posts and pictures re: "Relocate"). There was no way I could (or would desire to) run the thick, shielded alt/gen power cable through the existing throttle/choke/heater cable firewall penetration hole - there was no room for it, rubbing/wear looked like a potential issue, and the hole was already well-sealed with firewall sealant.
I used a Uni-Bit to drill a new 0.75" hole through the firewall just under the existing throttle/choke/heater cable firewall penetration hole. Installed a grommet with a 0.50" center hole and rerouted the power cable through that directly to the relocated VR. The other two wires can be rerouted from inside the avionics compartment down through an existing wiring hole to the VR. The existing wires are all sufficiently long to reach the relocated VR. I then sealed the new grommet area with firewall sealant.
Test flight yielded 13.9 volts / 1 amp at 5,250 rpm with everything working (all lights, SV avionics, AP, ADSB, etc.) which is what I expected to see per my past operating experience.  I was surprised to note how hot the VR gets - you cannot hold your hand on it for more than 5-10 seconds.  You northern folks will appreciate this new passenger knee-cap heater this winter.
My new operating procedure is to delay turning on electrical accessories until just before departure to hopefully reduce the load / heat within the VR (particularly during idle operations) - not sure if that helps, but maybe? Here's hoping my newly-relocated VR is happy for many hours to come.
-- David
ps - I now carry a spare VR - just in case. 
__________________
David Heal - Windsor, CA (near Santa Rosa)
EAA #23982 (circa 1965) - EAA Technical Counselor and Flight Advisor; CFI - A&I
RV-12 E-LSA #120496 (SV w/ AP and ADS-B 2020) - N124DH flying since March 2014 - 940+ hours (as of September 2020)! 
V AF donation through June 2021.
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03-18-2015, 05:40 PM
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Join Date: Mar 2010
Location: Raleigh, NC
Posts: 863
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Mission accomplished!
I completed today the relocation of my Ducatti Voltage regulator into the radiators cooling tunnel. I tested the result in a 1/2 hour flight with no indication that anything was different than before the relocation regarding amperage displayed by Skyview.
As I am not able to insert pictures on this site, I gave a detailed description of the steps I used in my builder blog here:
http://vieilleburette.blogspot.com/2...elocation.html
Sorry for the inconvenience!
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03-18-2015, 08:44 PM
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Join Date: Aug 2008
Location: Texas, Fort Worth
Posts: 1,237
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Quote:
Originally Posted by WingedFrog
I completed today the relocation of my Ducatti Voltage regulator into the radiators cooling tunnel. I tested the result in a 1/2 hour flight with no indication that anything was different than before the relocation regarding amperage displayed by Skyview.
As I am not able to insert pictures on this site, I gave a detailed description of the steps I used in my builder blog here:
http://vieilleburette.blogspot.com/2...elocation.html
Sorry for the inconvenience!
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Link is not working! 
__________________
John
RV12 N1212K
Flying Since June 2010
1020 Hours as of 9/30/2017
Johnrv12@icloud.com
RV14 Wing, arrived and building at Rdog's new Hanger at 16X
S/N 140014
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03-18-2015, 10:00 PM
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Join Date: Aug 2010
Location: Marshall TX (KASL)
Posts: 1,783
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Right - none of the pictures show. Unlike other pics on your site that are hosted at blogspot, all of these seem to link to a Google email account. Please fix - want to see these pics!
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Bill H, RV12, N412BR "Sweetie", Skyview-equipped, KASL Marshall TX
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03-19-2015, 05:20 AM
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Join Date: Mar 2010
Location: Raleigh, NC
Posts: 863
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Quote:
Originally Posted by Bill_H
Right - none of the pictures show. Unlike other pics on your site that are hosted at blogspot, all of these seem to link to a Google email account. Please fix - want to see these pics!
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Try the link in my signature at the bottom of this post, it should work.
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03-19-2015, 05:42 AM
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Join Date: Feb 2010
Location: Perth, Western Australia
Posts: 1,647
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Quote:
Originally Posted by WingedFrog
Try the link in my signature at the bottom of this post, it should work.
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Can see the text but no photos.
__________________
rgmwa
RV-12LR 912ULS
120346
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