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  #11  
Old 02-14-2021, 07:09 PM
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pstraub pstraub is offline
 
Join Date: Nov 2015
Location: Hensley Airpark, TN
Posts: 156
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Quote:
Originally Posted by HarryL View Post
I have the Silent Hektik regulator mounted below the avionics shelf and itís been fine for 60 hours since installation. I changed from the Ducati prior to any failure just as a precaution. I do run with all lighting on at all times and have a dual G3X touch, autopilot, GDL50R ADS-B IN, GPS20A and an iPad running from the Aux socket so close to maximum electrical load. The SH regulator hardly gets more than warm to the touch - definitely not hot.
Thanks Harry, very good info. With that in mind, I would assume the new B&C VR would be OK to mount inside as well. Do you remember if there were any wiring changes, or was the SH a plug-n-play swap with the Ducati? Thanks, Paul
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N917PB, SN 120971
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  #12  
Old 02-17-2021, 03:59 PM
HarryL HarryL is offline
 
Join Date: Jun 2015
Location: Woking UK
Posts: 58
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Quote:
Originally Posted by pstraub View Post
Thanks Harry, very good info. With that in mind, I would assume the new B&C VR would be OK to mount inside as well. Do you remember if there were any wiring changes, or was the SH a plug-n-play swap with the Ducati? Thanks, Paul
The SH accepts the Ducati connector. I had to add an additional ground wire from the SH regulator to a good local earth point - in my case I have a ground wire from the battery to the firewall so put the regulator onto the cockpit side of the same point.
One issue was bolt hole size/alignment - I had to open up the holes in the SH regulator on the drill press and used socket-head screws to fix it so it picks up the existing Vans anchor nuts on the avionics shelf.
I used the F4122 5-step regulator which SH recommend for the 912 when used with a Lithium battery, as I intend to fit the EarthX battery to save weight and move the C of G aft. Unfortunately the EarthX won't go directly into the Odyssey battery box in a 912 ULS aircraft as it's about 1/8" deeper so will require a bit of extra metalwork.
Vans specified the F4120 regulator instead in KAI 49-19 Rev 2 (Notification 18-04-00). Vans also has you link the C terminal directly to the BATT + terminal on the regulator but I didn't do this as otherwise you take away the ability to control the alternator. I don't have the standard Vans control module with fuses so have a dedicated 1A alternator control circuit breaker in the 'C' wire as well as the 20A output circuit breaker.
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  #13  
Old 02-18-2021, 04:14 AM
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magiccarpet magiccarpet is offline
 
Join Date: Feb 2013
Location: Switzerland, Europe
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Originally Posted by pstraub View Post
....has anyone installed the Silent Hektik or the new B&C VR inside the cabin?
Yes I have installed the SH in the cabin as per KAI. I proactively replaced the Ducati VR just shy of 8h TTAF knowing that it will fail sooner or later.
To reduce temperature I installed a PC fan which turns On with the master switch.
No problems so far, but only seeing 14.1V during cruise, which might be a bit low for charching the PC680 battery.

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If (one day) I should upgrade to the B&C regulator, I would possibly install it at the same location
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  #14  
Old 02-18-2021, 07:49 AM
Mich48041 Mich48041 is offline
 
Join Date: Apr 2008
Location: Riley TWP MI
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14.1 volts is fine. My Ducati regulator put out 13.8 before I replaced it with a John Deere.
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  #15  
Old 02-18-2021, 08:11 AM
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pstraub pstraub is offline
 
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Location: Hensley Airpark, TN
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Quote:
Originally Posted by HarryL View Post
The SH accepts the Ducati connector. I had to add an additional ground wire from the SH regulator to a good local earth point - in my case I have a ground wire from the battery to the firewall so put the regulator onto the cockpit side of the same point.
Quote:
Originally Posted by magiccarpet View Post
Yes I have installed the SH in the cabin as per KAI. I proactively replaced the Ducati VR just shy of 8h TTAF knowing that it will fail sooner or later. If (one day) I should upgrade to the B&C regulator, I would possibly install it at the same location
Thanks to both of you for the detailed descriptions!
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  #16  
Old 02-19-2021, 09:52 PM
RFSchaller RFSchaller is offline
 
Join Date: Oct 2010
Location: Phoenix, AZ
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Joe,

What kind of service life are you seeing on the John Deere VR?

Rich
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  #17  
Old 02-20-2021, 07:32 AM
Mich48041 Mich48041 is offline
 
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I installed the John Deere regulator 4 and a half years ago with heat conductive paste, a cooling shroud and blast tube from the air duct. I monitor its temperature with a thermocouple. It rarely gets much above 150 degrees F when the battery is recharging right after takeoff.
I expect that it will last a long time. I carry a spare just in case. The regulator is not going to fail because it knows that I have a spare.
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  #18  
Old 02-20-2021, 08:50 PM
RFSchaller RFSchaller is offline
 
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Location: Phoenix, AZ
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True, Joe! Ever since I started carrying a spare Ducati my VR has behaved. That Murphy guy got it right!😜
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