---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 03/20/18: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:43 AM - Re: Re: Regulator set point (Ernest Christley) 2. 09:54 AM - Re: Regulator set point (user9253) 3. 10:00 AM - Re: Re: Regulator set point (C&K) 4. 05:28 PM - Re: Regulator set point (Robert L. Nuckolls, III) ________________________________ Message 1 _____________________________________ Time: 08:43:29 AM PST US From: Ernest Christley Subject: Re: AeroElectric-List: Re: Regulator set point Thanks Joe, but how are you able to tell that these regulators have a highe r set point? On Tuesday, March 20, 2018 1:43 AM, user9253 wrote: The easy way is to replace the regulator.=C2- Search eBay for part number AM101406.=C2- I think that the only difference between the search result s is the price. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=478752#478752 - S - WIKI - - =C2- =C2- =C2- =C2- =C2- -Matt Dralle, List Admin. ________________________________ Message 2 _____________________________________ Time: 09:54:42 AM PST US Subject: AeroElectric-List: Re: Regulator set point From: "user9253" I have a John Deere regulator in my RV-12. The system voltage is now a half volt higher than when using the Ducati regulator. Not saying the regulator that you buy will have a higher voltage, but for $25 it is worth a try. The Ducati regulators fail so often that some pilots carry a spare. The important thing is to mount them with heat conductive paste to help carry the heat away. Heat is the enemy of electronics. -------- Joe Gores Read this topic online here: http://forums.matronics.com/viewtopic.php?p=478755#478755 ________________________________ Message 3 _____________________________________ Time: 10:00:59 AM PST US Subject: Re: AeroElectric-List: Re: Regulator set point From: C&K I've had two of those PM rectifier regulators consistently put out 14.4 volts (+/- 0.1) Mine were purchased directly from John Deere although I doubt that matters other than doubling or tripling the price. Ken On 20/03/2018 11:42 AM, Ernest Christlike wrote: > Thanks Joe, but how are you able to tell that these regulators have a > higher set point? > > > On Tuesday, March 20, 2018 1:43 AM, user9253 wrote: > > > > > > The easy way is to replace the regulator. Search eBay for part number > AM101406. I think that the only difference between the search results > is the price. > > -------- > Joe Gores > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=478752#478752 > > > http://www.matron================== > http://wiki.matronic====================== > > ________________________________ Message 4 _____________________________________ Time: 05:28:17 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Regulator set point At 08:40 PM 3/19/2018, you wrote: >I've switched to using a LiFePO battery. I accept the limited power >reserve it has in the case of a generator issue, because I'm not a >big fan of really long flight legs and the weight benefit for my >Corvair equipped 601XL is exceptional. That being said, more >reserve is a good thing. My Kubota regulator for the PM generator >is set at 13.8V. There was some talk a few years ago of modifying >the regulator to a higher set point. How would this feat be >accomplished? I'd like to set it between 14.3 and 14.5. > If it's a potted assembly, like many small pm rectifier/ regulators are, then adjusting the setpoint is not practical and pretty much impossible. If it can be disassembled and the parts are accessible, it MAY be possible to make some adjustment to the voltage control circuits. Actually, you might consider leaving it at 13.8 . . . if indeed it really runs at that value or a tad higher. See https://goo.gl/vCd59M Note that the LiFePO4 cells will achieve 100% charge or very close to it with a charging level of 3.4v per cell (13.6 volts on the bus). But as the experiment shows, there is a tipping point at about 3.3 volts per cell that severely limits energy replacement in the LiFePO4 cells. So if you're running 13.8, you can probably leave it alone. 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