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  #31  
Old 04-01-2018, 02:23 PM
kritsher kritsher is offline
 
Join Date: Feb 2007
Location: Stow MA
Posts: 165
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I just installed the JD regulator after my original VR started to show signs of failure at 175 hrs. I’m now seeing voltages occasionally hitting 14.6V, which gives me an audible “voltage” warning through the Skyview. I’m sure this is normal, as the JD VR is set to 14.4v, but I’m wondering: have people reset the voltage limits on the Dynon, and if so, what are appropriate new limits?
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  #32  
Old 04-02-2018, 08:19 AM
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f1rocket f1rocket is offline
 
Join Date: Jan 2005
Location: Martinsville, IN
Posts: 2,283
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Yes, you have to change the upward limit. I just bumped mine up to get rid of the nuisance warnings. I don't recall exactly, but it was either 14.8 or 15.0. If it "runs away", it will go much higher than that.
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  #33  
Old 04-02-2018, 07:28 PM
Driftdown Driftdown is offline
 
Join Date: Jan 2011
Location: Clearwater, Florida
Posts: 336
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Quote:
Originally Posted by f1rocket View Post
Yes, you have to change the upward limit. I just bumped mine up to get rid of the nuisance warnings. I don't recall exactly, but it was either 14.8 or 15.0. If it "runs away", it will go much higher than that.
I would like to see Jolly check in on this and provide some guidance.
I have a similar issue.
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  #34  
Old 04-03-2018, 06:13 AM
Dave12 Dave12 is offline
 
Join Date: Oct 2010
Location: Elkton, Md.
Posts: 1,358
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I am not taking anything away from Jolly’s expertise and experience in the Rotax area, but F-1’s advice works fine. There are many of us using the John Deere regulator ( in my case, a amazon $20 knock off). In my experience the $200 Ducati is no more reliable than the $20 Amazon. The Amazon has a bit higher charge rate. I have always carried a spare Ducati and now I carry a spare John Deere. This practice really saved my bacon a few years ago when my Ducati failed in the mountains of N.C. on start up one Saturday morning. 20 minutes later we were ready to roll with the John Deere.
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  #35  
Old 04-03-2018, 06:16 AM
BigJohn BigJohn is offline
 
Join Date: Nov 2008
Location: Gloversville, NY
Posts: 1,542
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I plan to replace my second Ducati with the SK next time it shows signs of weakness. See below email I received very recently from Supplier in UK.

Personally I am willing to pay the price for what seems to be a quality product, in exchange for not getting stranded somewhere with a dead battery.

I have not heard of a single SK failure. Has anyone else?

On a subsequent email Ian offered a 10% discount for an order of four units.



Hi John,

Thanks for making contact, apologies for the slow response.

We can order you in an F4118 with the connector block as per the attached
picture, we would be delighted to ship it to you in the US. We do not keep
these controllers in stock and they take something like 10 days to get to us
from the factory.

The pricing is:

F4118 = £198.00gbp
F4116 connector = £9.50gbp
Shipping = £19.00gbp

We can accept cards no problem, order form attached, if you let us know a
number and a time to call we can take the card payment over the phone if you
prefer.

Best regards

Ian


Ian

www.motoguzzisales.co.uk


-----Original Message-----
From: John Peck <johnpeck@nycap.rr.com>
Sent: 22 March 2018 11:51
To: ian@motoguzzisales.co.uk
Subject: SK Regulators

I understand you sell the SK F4112 and F4118 regulators. What is your price
for these shipped to the USA?

Sent from John Peck's iPad

______________________________________________
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  #36  
Old 04-03-2018, 06:30 AM
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tomkk tomkk is offline
 
Join Date: Apr 2014
Location: Port Orange, Fl
Posts: 780
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If I have the exchange rate right (.71), that totals about $320 ...
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  #37  
Old 04-05-2018, 01:28 PM
Jolly Jolly is offline
 
Join Date: Nov 2016
Location: San Francisco, CA
Posts: 45
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Running at 14.2 is good and even up to 14.6. My 1800 Honda Goldwing motorcycle runs at 14.2 - 14.4
14.2 is better than some see that are around 13.2 - 13.6 with these newer AGM and LiPo batteries. So setting a high voltage alarm at 14.8 - 15.0 volts is fine. You just wouldn't want 14.8 plus as your norm. Some instrument fluctuation also accounts for some of this bounce. The shunt wires can be scotcbrited and put a dab of dielectric grease on them can sometimes calm this down a fluctuating ammeter. A weak ground can cause fluctuations or lose wires on the battery.
Dynon says the Rotax is a noisy engine and that's why the ammeter can fluctuate.
The two yellow wires from the back of the engine that provides AC current to the VR may not be pressed in all the way and this may cause voltage swings and fluctuating ammeter readings.
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  #38  
Old 09-18-2018, 11:41 PM
Slane Slane is offline
 
Join Date: May 2008
Location: Hillsboro, OR
Posts: 157
Default VR variable temp

My VR is located in the cabin under the instrument shelf. Occasionally while flying, I can reach over and feel the VR for temperature. Some times it's very warm to the touch, not burning hot but uncomfortably warm. Other times the temperature is cool. Any thoughts about the differences? I've not tracked this difference but each time it is with strobes on, landing light pulsing, etc. Ideas?
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Hillsboro, OR
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#120043 N728SL
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  #39  
Old 09-19-2018, 01:33 AM
Piper J3's Avatar
Piper J3 Piper J3 is offline
 
Join Date: Nov 2014
Location: Hinckley, Ohio
Posts: 1,058
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Quote:
Originally Posted by Slane View Post
My VR is located in the cabin under the instrument shelf. Occasionally while flying, I can reach over and feel the VR for temperature. Some times it's very warm to the touch, not burning hot but uncomfortably warm. Other times the temperature is cool. Any thoughts about the differences? I've not tracked this difference but each time it is with strobes on, landing light pulsing, etc. Ideas?
My guess is the VR gets hot when recharging the battery after engine start (cranking), electrical loads prior to engine start, and negative imbalance until alternator is spinning fast enough (cruise flight). When battery regains full charge the VR is just passing enough current to maintain flight loads.
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Jim Stricker
Hinckley, Ohio
EAA #499867
PPL/ASEL 1970 - Sport Pilot since 2004
80 hrs Flying Aeronca Chief 11AC
1130 hrs Flying 46 Piper J-3 Cub
RV-12 E-LSA #120058 AWC Jul 2012 - Bought Flying Oct 2015 with 48TT - Hobbs now 402

LSRM-A Certificate 2016
Special Thanks to EJ Trucks
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  #40  
Old 09-19-2018, 03:46 AM
Major-Tom Major-Tom is offline
 
Join Date: Jul 2018
Location: Templin (Germany)
Posts: 10
Default Silent Hektik

I have the Silent Hektik Regulator F4118 and the recommended Aliant X3P LiFePo4 battery on my plane (Savannah-S). The duo workes just great. I took the 12Ah version, because the are so light anyway. The engine starts very easy. This VR is designed to take care of the spezial needs of LiFePo batteries and make charging them safe.

https://translate.google.com/transla...2FUL_R_912.htm

Good thing, if you want to upgrade from a ducati regulator, F4118 has the same connector.

Last edited by Major-Tom : 09-19-2018 at 03:52 AM.
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