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  #1  
Old 05-01-2019, 06:36 PM
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tomkk tomkk is offline
 
Join Date: Apr 2014
Location: Port Orange, Fl
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Default Silent Hektik Voltage Regulator

I just installed a SH VR. I've read about the stepping nature of this VR getting to max voltage. Mine started at around 12.7v. After 1/2 hr it was up to 13.6 and 13.8 after an hour.

I was expecting something like 14.0v or so. For those of you that have installed the SH VR, what voltages are you seeing?
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RV-12 N121TK ELSA #120845; first flight 06/10/2015; 650 hrs as of 09/2019
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  #2  
Old 05-01-2019, 10:17 PM
pilotyoung pilotyoung is offline
 
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Location: Birmingham, AL
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Default Silent Hektik

I have seen mine as high as 14.1 volts on a long flight.
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  #3  
Old 05-02-2019, 07:40 AM
John-G John-G is offline
 
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Location: Northeast Ohio
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Default

Tom -

There are two versions of the Silent Hektik regulator that are commonly used on Rotax installations. The older style is the F4112 and it has a steady non-stepping output that is below 14 volts. The newer regulator is the F4118 and it is the stepping version which is better suited for AGM batteries and has an output a little above 14 volts.

I have the newer F4118 version installed in my RV-12 which now has approximately 50 hours on it. As previously mentioned, the voltage steps slowly and will eventually settle in around 14.1 or 14.2 volts.

Happy flying,
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Last edited by John-G : 05-02-2019 at 08:41 AM.
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  #4  
Old 05-02-2019, 07:41 AM
benfra benfra is offline
 
Join Date: May 2007
Location: ft MYERS, FL Based @KPGD
Posts: 26
Default SH regulator

My regulator shows max 13.9, But, I keep a charge on in the hangar and I m in Fl and flights are usually 1 hr or less. Does start out charging slowly, appears yours is normal ops. I m happy with mine! ENJOY Ben
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  #5  
Old 05-02-2019, 08:59 AM
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tomkk tomkk is offline
 
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Location: Port Orange, Fl
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Quote:
Originally Posted by John-G View Post
Tom -

There are two versions of the Silent Hektik regulator that are commonly used on Rotax installations. The older style is the F4112 and it has a steady non-stepping output that is below 14 volts. The newer regulator is the F4118 and it is the stepping version which is better suited for AGM batteries and has an output a little above 14 volts.

I have the newer F4118 version installed in my RV-12 which now has approximately 50 hours on it. As previously mentioned, the voltage steps slowly and will eventually settle in around 14.1 or 14.2 volts.

Happy flying,
OK, thanks. There's apparently one later than the F4118 - mine is a F4122. I looked at the stepping curve on their website and it looks like I got to step 4. Might just take a bit longer to get to the higher voltage.

Sounds like mine is operating pretty normally ...
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Port Orange, Fl
RV-12 N121TK ELSA #120845; first flight 06/10/2015; 650 hrs as of 09/2019
RV-12 N918EN ELSA #120995 Eagles Nest Project; first flight 05/18/2019
SPA Panther N26TK in progress
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  #6  
Old 05-02-2019, 09:32 AM
John-G John-G is offline
 
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Location: Northeast Ohio
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Default

Quote:
Originally Posted by tomkk View Post
There's apparently one later than the F4118 - mine is a F4122.
Tom, Thanks for pointing that out. My SH regulator is working so well I have not needed to research regulators any more .... did not know there were newer models from SH. After a fast look at the SH web site, looks like the F4122 is mostly the same as the F4118 but has an added provision for a flashing over-temp warning light.
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  #7  
Old 05-02-2019, 12:37 PM
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magiccarpet magiccarpet is offline
 
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Location: Switzerland, Europe
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I see 14.1 ... 14.2V after around 30min. Model F4118.
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