---------------------------------------------------------- AeroElectric-List Digest Archive --- Total Messages Posted Tue 02/20/07: 15 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 06:56 AM - battery bus (Matt Jurotich) 2. 07:37 AM - Re: battery bus (Robert L. Nuckolls, III) 3. 10:49 AM - P-mags (Terry Watson) 4. 11:09 AM - Full Auto (Sam Marlow) 5. 11:34 AM - Re: Full Auto (BobsV35B@aol.com) 6. 11:54 AM - Re: P-mags (John W. Cox) 7. 12:04 PM - Re: P-mags (Harley) 8. 12:27 PM - Re: P-mags (Hinde, Frank George (Corvallis)) 9. 12:52 PM - Re: Pulse width modulation on linear actuators (Bill and Marsha) 10. 12:55 PM - Re: Full Auto (Robert L. Nuckolls, III) 11. 05:44 PM - Re: P-mags (HCRV6@comcast.net) 12. 06:35 PM - Re: P-mags (John W. Cox) 13. 06:54 PM - Re: Trim Motor Rant (bob noffs) 14. 08:50 PM - Stripping Longer Piece of Shielded/Twisted Pair Wire (r falstad) 15. 11:06 PM - Re: Strobes (Speedy11@aol.com) ________________________________ Message 1 _____________________________________ Time: 06:56:28 AM PST US From: Matt Jurotich Subject: AeroElectric-List: battery bus I have put a blade type fuse holder connected to the battery and 14 gauge wire from there to an always hot lighter socket and a short wire from there to the endurance bus switch. Is there a slow blow 20 amp fuse for automotive blade type fuses or a circuit breaker that would work. Is my endurance bus at significant risk and if so would a fusible link be better? I figure e bus loads at about 5 amps. Thanks in advance Matthew M. Jurotich e-mail mail to: phone : 301-286-5919 ________________________________ Message 2 _____________________________________ Time: 07:37:09 AM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: battery bus At 09:55 AM 2/20/2007 -0500, you wrote: > > >I have put a blade type fuse holder connected to the battery and 14 gauge >wire from there to an always hot lighter socket and a short wire from >there to the endurance bus switch. Is there a slow blow 20 amp fuse for >automotive blade type fuses or a circuit breaker that would work. Is my >endurance bus at significant risk and if so would a fusible link be >better? I figure e bus loads at about 5 amps. I presume the fuse holder is right next to the battery contactor. Suggest you use a separate fuse (5A) off the battery bus to drive the "lighter socket". Use another fuse to supply always hot wire to the alternate feed switch. 10A fuse is fine for a 5A bus. Bob . . . ---------------------------------------- ( IF one aspires to be "world class", ) ( what ever you do must be exercised ) ( EVERY day . . . ) ( R. L. Nuckolls III ) ---------------------------------------- ________________________________ Message 3 _____________________________________ Time: 10:49:51 AM PST US From: "Terry Watson" Subject: AeroElectric-List: P-mags This is an excerpt from a message to the Matronics Engines list this morning, posted by Mike Larkin: " As for the P-mag, I recovered an RV-7 from a highway two weekends ago when Both P-mags failed. Guess what, the electrical system worked perfectly......" Since E-mags and P-mags have been a subject on this list, I thought I would pass it on. Does anyone know the story? Terry ________________________________ Message 4 _____________________________________ Time: 11:09:00 AM PST US From: Sam Marlow Subject: AeroElectric-List: Full Auto I know I read it somewhere on the web, a fully auto Stby Alt system. All you have to do is reduce loads until the light goes out, and continue uninterrupted until your planned stop fuel stop. Anyone remember reading something like that? I'm ready for that step in my RV10, and don't want to continue with a overly complicated system. KISS is my aim! Sam Marlow Wiring RV10 ________________________________ Message 5 _____________________________________ Time: 11:34:33 AM PST US From: BobsV35B@aol.com Subject: Re: AeroElectric-List: Full Auto Good Afternoon Sam, That is the way the certified B&C Standby Alternator in My V35B Bonanza works. I love it! Happy Skies, Old Bob AKA Bob Siegfried Ancient Aviator Stearman N3977A Brookeridge Air Park LL22 Downers Grove, IL 60516 630 985-8503 In a message dated 2/20/2007 1:10:34 P.M. Central Standard Time, sam@fr8dog.net writes: I know I read it somewhere on the web, a fully auto Stby Alt system. All you have to do is reduce loads until the light goes out, and continue uninterrupted until your planned stop fuel stop. Anyone remember reading something like that? I'm ready for that step in my RV10, and don't want to continue with a overly complicated system. KISS is my aim! Sam Marlow Wiring RV10


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Check out free AOL at http://free.aol.com/thenewaol/index.adp. Most comprehensive set of free safety and security tools, millions of free high-quality videos from across the web, free AOL Mail and much more. ________________________________ Message 6 _____________________________________ Time: 11:54:50 AM PST US Subject: RE: AeroElectric-List: P-mags From: "John W. Cox" I was not aware the four cylinder P mag was yet available for Prime Time. Could this have been dual E mags? John Cox -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Terry Watson Sent: Tuesday, February 20, 2007 10:47 AM Subject: AeroElectric-List: P-mags This is an excerpt from a message to the Matronics Engines list this morning, posted by Mike Larkin: " As for the P-mag, I recovered an RV-7 from a highway two weekends ago when Both P-mags failed. Guess what, the electrical system worked perfectly......" Since E-mags and P-mags have been a subject on this list, I thought I would pass it on. Does anyone know the story? Terry ________________________________ Message 7 _____________________________________ Time: 12:04:42 PM PST US From: Harley Subject: Re: AeroElectric-List: P-mags John... The four cylinder P-Mag has been available right from the start...I've ordered one (now have two) in September of 2004. The six cylinder version is still waiting release. www.emagair.com/FAQ.htm Harley Dixon ------------------------------------------------------------------------ John W. Cox wrote: > > I was not aware the four cylinder P mag was yet available for Prime > Time. Could this have been dual E mags? > > John Cox > > > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Terry > Watson > Sent: Tuesday, February 20, 2007 10:47 AM > To: aeroelectric-list@matronics.com > Subject: AeroElectric-List: P-mags > > > > > This is an excerpt from a message to the Matronics Engines list this > morning, posted by Mike Larkin: > > " As for the P-mag, I recovered an RV-7 from a highway two weekends ago > when Both P-mags failed. Guess what, the electrical system worked > perfectly......" > > Since E-mags and P-mags have been a subject on this list, I thought I > would > pass it on. Does anyone know the story? > > Terry > > > ________________________________ Message 8 _____________________________________ Time: 12:27:10 PM PST US Subject: RE: AeroElectric-List: P-mags From: "Hinde, Frank George (Corvallis)" Nope Dual P mags. They did NOT fail. I believe ONE of them went to very advanced timing. It has the effect of fouling up the timing completely because once the charge has been lit the second spark doesn't do anything. There is a long discussion on the Vansairforce website about it. Frank RV-7a -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of John W. Cox Sent: Tuesday, February 20, 2007 11:54 AM Subject: RE: AeroElectric-List: P-mags --> I was not aware the four cylinder P mag was yet available for Prime Time. Could this have been dual E mags? John Cox -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Terry Watson Sent: Tuesday, February 20, 2007 10:47 AM Subject: AeroElectric-List: P-mags This is an excerpt from a message to the Matronics Engines list this morning, posted by Mike Larkin: " As for the P-mag, I recovered an RV-7 from a highway two weekends ago when Both P-mags failed. Guess what, the electrical system worked perfectly......" Since E-mags and P-mags have been a subject on this list, I thought I would pass it on. Does anyone know the story? Terry ________________________________ Message 9 _____________________________________ Time: 12:52:28 PM PST US From: "Bill and Marsha" Subject: Re: AeroElectric-List: Pulse width modulation on linear actuators Bob I also am in need of a speed controller to slow down a linear actuator that I intend to use for my manually in-flight adjustable prop. I have a Werner Electric actuator rated at 1.3a no load and 5.9a full load (75 lbs) Full load speed .6 in. sec. no-load speed. 1 in sec.I should need only about 25 lbs force. My question is, If I use your Dimmer ckt, as shown in the earlier attached PDF link, What are the component values that should be used to build it. And can I expect app 1/3 force at 1/3 speed? Bill S. ----- Original Message ----- From: "Robert L. Nuckolls, III" Sent: Friday, February 16, 2007 1:38 AM Subject: Re: AeroElectric-List: Pulse width modulation on linear actuators > > > At 09:55 PM 2/15/2007 -0800, you wrote: > >> >> >>Can any one tell if the duty cycle on a PWM will equate at least roughly >>with motor speed? ie will a 20% duty cycle slow the motor down to >>approximately %20 or does it not work that way? I have a linear actuator >>for >>pitch trim that that travels 2"/sec, I need about .5"/sec. > > > Probably. PM motors have field fields which makes > RPM proportional to applied voltage. The RMS (power) > available from any source is also proportional > to duty cycle for a non-continuous flow. In any > case, I presume you're going to make the duty cycle > adjustable so whether it takes 25% duty cycle > or 27% duty cycle to achieve exactly the speed you > want is irrelevant. > > You can also use linear techniques. An adjustable > but regulated voltage source not unlike the dimmers > described in . . . > > http://www.aeroelectric.com/articles//DimmerFabrication.pdf > > . . . may be considered also. How much current does > your motor draw at full speed? > > Bob . . . > > ---------------------------------------- > ( IF one aspires to be "world class", ) > ( what ever you do must be exercised ) > ( EVERY day . . . ) > ( R. L. Nuckolls III ) > ---------------------------------------- > > > ________________________________ Message 10 ____________________________________ Time: 12:55:34 PM PST US From: "Robert L. Nuckolls, III" Subject: Re: AeroElectric-List: Full Auto At 02:07 PM 2/20/2007 -0500, you wrote: > >I know I read it somewhere on the web, a fully auto Stby Alt system. All >you have to do is reduce loads until the light goes out, and continue >uninterrupted until your planned stop fuel stop. Anyone remember reading >something like that? I'm ready for that step in my RV10, and don't want to >continue with a overly complicated system. KISS is my aim! It's the B&C SD-20 with details at http://bandc.biz and you can check out Figure Z-12 at http://aeroelectric.com/articles/Rev11/AppZ_R11J.pdf for a suggested architecture to go with it. Bob . . . ---------------------------------------- ( IF one aspires to be "world class", ) ( what ever you do must be exercised ) ( EVERY day . . . ) ( R. L. Nuckolls III ) ---------------------------------------- ________________________________ Message 11 ____________________________________ Time: 05:44:27 PM PST US From: HCRV6@comcast.net Subject: RE: AeroElectric-List: P-mags Frank, Help me out here, if that isn't a "failure", just what would you call it? In my book, any mechanical screw up that causes an unplanned landing sure fits the definition of a failure. -- Harry Crosby RV-6 N16CX, 312 hours -------------- Original message ---------------------- From: "Hinde, Frank George (Corvallis)" > > > Nope Dual P mags. They did NOT fail. I believe ONE of them went to very > advanced timing. It has the effect of fouling up the timing completely > because once the charge has been lit the second spark doesn't do > anything. > > There is a long discussion on the Vansairforce website about it. > > Frank > RV-7a > > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of John > W. Cox > Sent: Tuesday, February 20, 2007 11:54 AM > To: aeroelectric-list@matronics.com > Subject: RE: AeroElectric-List: P-mags > > --> > > I was not aware the four cylinder P mag was yet available for Prime > Time. Could this have been dual E mags? > > John Cox > > > > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Terry > Watson > Sent: Tuesday, February 20, 2007 10:47 AM > To: aeroelectric-list@matronics.com > Subject: AeroElectric-List: P-mags > > > > > This is an excerpt from a message to the Matronics Engines list this > morning, posted by Mike Larkin: > > " As for the P-mag, I recovered an RV-7 from a highway two weekends ago > when Both P-mags failed. Guess what, the electrical system worked > perfectly......" > > Since E-mags and P-mags have been a subject on this list, I thought I > would pass it on. Does anyone know the story? > > Terry > > > > > > > > > > > > > > > > > > > > ________________________________ Message 12 ____________________________________ Time: 06:35:14 PM PST US Subject: RE: AeroElectric-List: P-mags From: "John W. Cox" I guess my attempt at tact by saying not yet available for Prime Time was misleading. So... the P mag is ready for Prime Time and does out perform an archaic magneto. John Cox #40600 -----Original Message----- From: owner-aeroelectric-list-server@matronics.com [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of HCRV6@comcast.net Sent: Tuesday, February 20, 2007 5:43 PM Subject: RE: AeroElectric-List: P-mags Frank, Help me out here, if that isn't a "failure", just what would you call it? In my book, any mechanical screw up that causes an unplanned landing sure fits the definition of a failure. -- Harry Crosby RV-6 N16CX, 312 hours -------------- Original message ---------------------- From: "Hinde, Frank George (Corvallis)" (Corvallis)" > > > Nope Dual P mags. They did NOT fail. I believe ONE of them went to very > advanced timing. It has the effect of fouling up the timing completely > because once the charge has been lit the second spark doesn't do > anything. > > There is a long discussion on the Vansairforce website about it. > > Frank > RV-7a > > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of John > W. Cox > Sent: Tuesday, February 20, 2007 11:54 AM > To: aeroelectric-list@matronics.com > Subject: RE: AeroElectric-List: P-mags > > --> > > I was not aware the four cylinder P mag was yet available for Prime > Time. Could this have been dual E mags? > > John Cox > > > > -----Original Message----- > From: owner-aeroelectric-list-server@matronics.com > [mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Terry > Watson > Sent: Tuesday, February 20, 2007 10:47 AM > To: aeroelectric-list@matronics.com > Subject: AeroElectric-List: P-mags > > > > > This is an excerpt from a message to the Matronics Engines list this > morning, posted by Mike Larkin: > > " As for the P-mag, I recovered an RV-7 from a highway two weekends ago > when Both P-mags failed. Guess what, the electrical system worked > perfectly......" > > Since E-mags and P-mags have been a subject on this list, I thought I > would pass it on. Does anyone know the story? > > Terry > > > > > > > > > > > > > > > > > > > > ________________________________ Message 13 ____________________________________ Time: 06:54:22 PM PST US From: "bob noffs" Subject: Re: AeroElectric-List: Trim Motor Rant paul, small world, i spent monday. i wired the led and the switch into 9 pin d sub connectors. now at least they can be removed from the panel without cutting those teeny weeny wires! bob noffs ----- Original Message ----- From: Valovich, Paul To: aeroelectric-list@matronics.com Sent: Monday, February 19, 2007 9:37 AM Subject: AeroElectric-List: Trim Motor Rant I spent Sunday wiring the Ray Allen elevator trim motor on my -8A. Can anyone explain the logic of why this otherwise fine product has micro wires hanging off it instead of AWG 22's? What a PITA to work with. Paul Valovich ________________________________ Message 14 ____________________________________ Time: 08:50:41 PM PST US From: "r falstad" Subject: AeroElectric-List: Stripping Longer Piece of Shielded/Twisted Pair Wire I have a few electrical cables (e.g., from nav lights) to my panel that are shielded/twisted pairs. One of the wires goes to the panel switch and the other goes to the ground block on the firewall. Is there any easy way to strip of 2' to 3' of the outer cable jacket so I can reach both the switch and the ground block without splicing in a piece of wire to run to the ground block? Bob ________________________________ Message 15 ____________________________________ Time: 11:06:06 PM PST US From: Speedy11@aol.com Subject: AeroElectric-List: Re: Strobes Ferg, Nicely said. Stan Sutterfield Do not archive I read your latest paragraph regarding lighting and noted that's it's all "I" and no "we". Manoeuvring around an airfield, particularly a busy one, is very much a community thing, not a solitary event. While you are not bothered by another's strobes on the tarmac, many others are, me included. ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message aeroelectric-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/AeroElectric-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/aeroelectric-list Browse Digests http://www.matronics.com/digest/aeroelectric-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.