Pietenpol-List: Mags and A's

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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: Ken Beanlands
Subject: Pietenpol-List: Re: Mags and A's>Pat,> To be honest, I don't know. I'm not an A&P, etc. It was just something I>learned when I had the mags replaced on my Taylorcraft, that there was a>left and a right mag. It may have relate to their direction of rotation.>So, when I ordered two of the mags from Army Surplus I asked, and was told,>that they "are all right mags, there are no left mags". I am wondering,>like you, if one of them can be converted.>>>>Randall Reihing wrote:>>>>>> While ordering one of those Slick mags from Army Surplus I discoveredthey>>> are all "right" mags. No left mags.>>>>What is the fundamental difference, and can a right mag be>>converted to a left, and do they have 6 cylinder models>>available?>>>>Thanks!>>>>Pat>>>>>Randall Reihing>University of Toledo>College of Engineering>MIME Department>419-530-8244>FAX: 419-530-8206>E-Mail: rreihing(at)eng.utoledo.edu________________________________________________________________________________
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: David Swagler
Subject: Pietenpol-List: Re: Mags and A's>There are two windings in the mag.> One of the windings, the primary, is connected to ground at one end andthe>other end is switched to ground by the points. The capacitor is in parallel>with the points.I think you mean switched to the secondary winding by the points don't you? (I think this is right but I might be wrong....) GY> The second winding is many more turns of a very fine wire with one end>sharing a common connection with the primary winding. The rotation of the>armature causes a voltage and a current to flow in the primary as the>windings move across the magnetic field. The points break this circuit at>the time of the highest current flow in the primary and the rapid collapse>of the primary's magnetic field causes a very high voltage to be generatedYour right, the point at which the field in the primary flux calapses inrelation to the points closing is important and it is not symetrical in thecycle. Therefore the mag is not reversable without a change.....>Hope this isn't confusing>>John Mc>>________________________________________________________________________________
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: Randall Reihing
Randall Reihing wrote:> > While ordering one of those Slick mags from Army Surplus I discovered they> are all "right" mags. No left mags. What is the fundamental difference, and can a right mag beconverted to a left, and do they have 6 cylinder modelsavailable?Thanks!Pat________________________________________________________________________________
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Pietenpol-List: Mags and A's

Post by matronics »

Original Posted By: Patrick Panzera
While ordering one of those Slick mags from Army Surplus I discovered theyare all "right" mags. No left mags. Also, George Skistimas, Sylvania, Ohio,an IA, completed his A-65 powered Pietenpol several years ago. He obtained,but never used, a Ford Model A engine that many, many, years ago had beenprofessionally converted to an air-cooled Model A by a company that wasconverting them for aircraft use. George purchased the engine from a man inTexas and had it rebuilt in Auburn, Indiana. It's something to see with allthe fins and other devices. Randall ReihingUniversity of ToledoCollege of EngineeringMIME Department419-530-8244FAX: 419-530-8206E-Mail: rreihing(at)eng.utoledo.edu________________________________________________________________________________
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: Randall Reihing
Organization:I may be way out in left field, but I thing the difference is that onlyone mag has an impulse coupling. At least I think that is the way itwas on a Cherokee that I once owned.Bob B.----- Original Message -----________________________________________________________________________________
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Pietenpol-List: Fw: Mags and A's

Post by matronics »

Original Posted By: Randall Reihing
Pat and Randall and all, Both mags turn in the same direction. The basic difference is that theright mag is just a simple magneto. The left mag has an extra mechanism andis called an impulse mag. Due to propping at such a slow speed,( and sincethe mag runs off the cam, which runs at half of that speed) the magnet isnot passing the coil fast enough to create an output spark.So this "impulse" gadget retards the spark,( to minimize backfiring) andkind of "holds back" the magnet, then lets it fly by the coil at the righttime to create a spark. Then above a certain rpm this mechanism kind oflatches out , waiting for the next start. Then it becomes same as a righthand mag.If you pull a prop through , or when any plane shuts down, thats theclicking you hear when it comes to a stop.Even though both mags are hot , you start on the impulse mag.NOTE: When you time an impulse mag you have to pull prop in directionTHROUGH the impulse, then back up through points closing, then bring throughfor correct timing.I was shown a neat gadget with bulb and battery to set timing on a mag. Ifanyone need this infro, let me know.walt-----Original Message-----
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: walter evans
OK, there seems to be a little confusuion here. Let me try and clarify.There are 2 deffinitions of "right" and "left" mags. From the engine'spoint of view, there are 2 mags, a left and a right. Depending on theengine, they cam be the same or different. In some cases, one will have animpulse couple and the other won't. In other cases one will have adifferent lag angle than the other to aid starting. In rare occasions, thetwo mags may even rotat opposite each other. The mag really doesn't careif it's on the right or left as long as it's turned the right way. A givenmag may be installed on the left side on one engine and on the right ofanother.That brings us to the second definition. Depending on the gearing of theaccessory case, a mag may need to have either a clockwise orcounterclockwise rotation or, as slick labels it, right rotation or leftrotation. This is the L & R noted on the mag. So, the mags that are available from the Army Surplus are right handrotation. BTW, I confirmed this when I bought my 4 mags yesterday. It'sclearly marked on the mag "Rotation: R". As for running them backward, Idon't think you can. However, there may be a little internal magic toforce this.KenOn Tue, 22 Jun 1999, Patrick Panzera wrote:> Randall Reihing wrote:> > > > While ordering one of those Slick mags from Army Surplus I discovered they> > are all "right" mags. No left mags. > > What is the fundamental difference, and can a right mag be> converted to a left, and do they have 6 cylinder models> available?> > Thanks!> > Pat> ________________________________________________________________________________
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: Mike Lund
Pat, To be honest, I don't know. I'm not an A&P, etc. It was just somethingIlearned when I had the mags replaced on my Taylorcraft, that there was aleft and a right mag. It may have relate to their direction of rotation.So, when I ordered two of the mags from Army Surplus I asked, and was told,that they "are all right mags, there are no left mags". I am wondering,like you, if one of them can be converted. >Randall Reihing wrote:>> >> While ordering one of those Slick mags from Army Surplus I discovered they>> are all "right" mags. No left mags. >>What is the fundamental difference, and can a right mag be>converted to a left, and do they have 6 cylinder models>available?>>Thanks!>>Pat>>Randall ReihingUniversity of ToledoCollege of EngineeringMIME Department419-530-8244FAX: 419-530-8206E-Mail: rreihing(at)eng.utoledo.edu________________________________________________________________________________
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: Duane
If you dont mind my asking, Where did you purchase theses mags and what was thecost..Ken Beanlands wrote:> OK, there seems to be a little confusuion here. Let me try and clarify.> There are 2 deffinitions of "right" and "left" mags. From the engine's> point of view, there are 2 mags, a left and a right. Depending on the> engine, they cam be the same or different. In some cases, one will have an> impulse couple and the other won't. In other cases one will have a> different lag angle than the other to aid starting. In rare occasions, the> two mags may even rotat opposite each other. The mag really doesn't care> if it's on the right or left as long as it's turned the right way. A given> mag may be installed on the left side on one engine and on the right of> another.>> That brings us to the second definition. Depending on the gearing of the> accessory case, a mag may need to have either a clockwise or> counterclockwise rotation or, as slick labels it, right rotation or left> rotation. This is the L & R noted on the mag.>> So, the mags that are available from the Army Surplus are right hand> rotation. BTW, I confirmed this when I bought my 4 mags yesterday. It's> clearly marked on the mag "Rotation: R". As for running them backward, I> don't think you can. However, there may be a little internal magic to> force this.>> Ken>> On Tue, 22 Jun 1999, Patrick Panzera wrote:>> > Randall Reihing wrote:> > >> > > While ordering one of those Slick mags from Army Surplus I discovered they> > > are all "right" mags. No left mags.> >> > What is the fundamental difference, and can a right mag be> > converted to a left, and do they have 6 cylinder models> > available?> >> > Thanks!> >> > Pat> >>________________________________________________________________________________
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: Earl Myers
As for running them backward, I>don't think you can. However, there may be a little internal magic to>force this.Changing the direction of rotation can be done with some mags. The basicprinciple of a mag is that it is a generator and ignition system combined.There are two windings in the mag. One of the windings, the primary, is connected to ground at one end and theother end is switched to ground by the points. The capacitor is in parallelwith the points. The second winding is many more turns of a very fine wire with one endsharing a common connection with the primary winding. The rotation of thearmature causes a voltage and a current to flow in the primary as thewindings move across the magnetic field. The points break this circuit atthe time of the highest current flow in the primary and the rapid collapseof the primary's magnetic field causes a very high voltage to be generatedin the secondary. The capacitor or condensor aids in the sudden collapse ofthe primary. It also tends to prevent arcing at the points.The basis is almost the same as in an automotive system except that nobattery is needed as the magnets and windings provide the primary current.The impulse works as decribed in the previous e-mail and has the effect ofcausing a higher speed between the armature and winding as well as retardingthe spark for easier starting. Always check that your mag switch grounds theprimary so that no unintentional cylinder firing can occur. (It is thatsecond prop blade that hurts! ;-( )back to reversing a mag.. the objct is to break the primary when the maximummagnetic flux occurs to create the hottest spark possible. The breaker camdetermines when this occurs. I have successfully reversed some older mags ofthe type found on Gipsy Major engines, by repositioning the cam for theopposite rotation. These mags have the magnet stationary and the coils andpoints rotate. (must be British !). The impulse is much harder to reverse but possible. It depends on howbadly you want to do it.For the Model A guys, the mags as shown in the early plans are of a similartype to the old tractors and run at crankshaft speed with reduction gearingin the mag distributor. A four stroke four cylinder engine fires twocylinders in one revolution.A lot of the early mag drives used a coupling with a fiber of rubbercoupling between two metal gear like parts one with 19 teeth and the otherwith 20. This allows small timing changes to be made by turning one part.The Pratt and Whitney 9 cylinder radials use this method. If you know anyantique tractor peoplethey might help out as many of the older tractors,Pre WW2, use this type of coupling. Far superior to the leather drive washerin Bernard' s plans.Hope this isn't confusingJohn Mc________________________________________________________________________________
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: oil can
John McNarry wrote:> > As for running them backward, I-------------------------------------> Hope this isn't confusing> > John McGo John!________________________________________________________________________________
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> Re: Mags and A's

Post by matronics »

Original Posted By:-----Original Message-----
Subject: Pietenpol-List: Re: Mags and A's>>-----Original Message----->From: John McNarry >To: Pietenpol Discussion >Date: Tuesday, June 22, 1999 10:32 PM>Subject: Re: Mags and A's>>>>There are two windings in the mag.>> One of the windings, the primary, is connected to ground at one endand>the>>other end is switched to ground by the points. The capacitor is inparallel>>with the points.>>I think you mean switched to the secondary winding by the points don'tyou?> (I think this is right but I might be wrong....) GYNope, the current flow in the primary exsists while the points areclosed and the windings are cutting across the magnetic flux lines ofthe permanent magnet's field. When the points open the primary's ownmagnetic field collapses rapidly across the secondary winding. Themotion of the collapsing magnetic field across the many turns of finewindings in the secondary produces the voltage that jumps the plug gap.>Your right, the point at which the field in the primary flux collapsesin>relation to the points closing ( open) is important and it is notsymetrical in the>cycle. Therefore the mag is not reversable without a change.The instant the points open is the firing point!John Mc
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> Re: Mags and A's

Post by matronics »

Original Posted By: "BELLISSIMO, DOMENIC"
Walt,Great information. Answers alot of my questions. Yes, I would be interested in knowing more aboutthe bulb / battery combination to se tthe timing ofa mag.Thanks..Mike KingDallas>Pat and Randall and all,> Both mags turn in the same direction. The basic difference is that the>right mag is just a simple magneto. The left mag has an extra mechanism and>is called an impulse mag. Due to propping at such a slow speed,( and since>the mag runs off the cam, which runs at half of that speed) the magnet is>not passing the coil fast enough to create an output spark.>So this "impulse" gadget retards the spark,( to minimize backfiring) and>kind of "holds back" the magnet, then lets it fly by the coil at the right>time to create a spark. Then above a certain rpm this mechanism kind of>latches out , waiting for the next start. Then it becomes same as a right>hand mag.>If you pull a prop through , or when any plane shuts down, thats the>clicking you hear when it comes to a stop.>Even though both mags are hot , you start on the impulse mag.>NOTE: When you time an impulse mag you have to pull prop in direction>THROUGH the impulse, then back up through points closing, then bring through>for correct timing.>I was shown a neat gadget with bulb and battery to set timing on a mag. If>anyone need this infro, let me know.>walt>-----Original Message----->From: Randall Reihing >To: Pietenpol Discussion >Date: Tuesday, June 22, 1999 4:27 PM>Subject: Re: Mags and A's>>>>Pat,>> To be honest, I don't know. I'm not an A&P, etc. It was just something I>>learned when I had the mags replaced on my Taylorcraft, that there was a>>left and a right mag. It may have relate to their direction of rotation.>>So, when I ordered two of the mags from Army Surplus I asked, and was told,>>that they "are all right mags, there are no left mags". I am wondering,>>like you, if one of them can be converted.>>>>>>>>>>>Randall Reihing wrote:>>>>>>>> While ordering one of those Slick mags from Army Surplus I discovered>they>>>> are all "right" mags. No left mags.>>>>>>What is the fundamental difference, and can a right mag be>>>converted to a left, and do they have 6 cylinder models>>>available?>>>>>>Thanks!>>>>>>Pat>>>>>>>>Randall Reihing>>University of Toledo>>College of Engineering>>MIME Department>>419-530-8244>>FAX: 419-530-8206>>E-Mail: rreihing(at)eng.utoledo.edu>>________________________________________________________________________________
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: John McNarry
-----Original Message-----
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>> Re: Mags and A's

Post by matronics »

Original Posted By:>>> John McNarry
Subject: Pietenpol-List: Re: Mags and A's>Mike,> Army Surplus in Idaho for the Slick mags. Call 208-529-4555, ask for Jake.>>>>>>to:piet(at)byu.edu>>>>hi, can anyone re-post the source for the slick surplus mags ?>>i somehow lost the address / phone no. thanx, all.>>>>Best Regards, Mike Chanter>>mchanter(at)bigfoot.com>>>>*** Forwarding note from PNGWDWXY--EXTERNAL 06/24/99 07:38 ***>>>>From: David B. Schober>>Subject: Re: Mags and A's>>>>From: "David B. Schober">>To: "Pietenpol Discussion">>>>The coils can be used for either direction of rotation. The main>difference is>>the cam and the distributor gear. As john stated, a Bendix (Teledyne>>Continental) mag can easily be converted from right to left rotation, just>>invert the cam and change what teath mesh on the distributor gear. Slick>didn't>>give you that option. To change a slick from right ot left your going tohave>> to>>buy parts.>>>>The points ground the primary to create the circuit. At the instant they>open,>>the flux field collapses and induces an EMF in the secondary just like a>>transformer.>>>>Greg Yotz wrote:>>>>> -----Original Message-----
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By:> John McNarry
The coils can be used for either direction of rotation. The main difference isthe cam and the distributor gear. As john stated, a Bendix (TeledyneContinental) mag can easily be converted from right to left rotation, justinvert the cam and change what teath mesh on the distributor gear. Slick didn'tgive you that option. To change a slick from right ot left your going to have tobuy parts.The points ground the primary to create the circuit. At the instant they open,the flux field collapses and induces an EMF in the secondary just like atransformer.Greg Yotz wrote:> -----Original Message-----
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: David B. Schober
to:piet(at)byu.eduhi, can anyone re-post the source for the slick surplus mags ?i somehow lost the address / phone no. thanx, all.Best Regards, Mike Chantermchanter(at)bigfoot.com*** Forwarding note from PNGWDWXY--EXTERNAL 06/24/99 07:38 ***________________________________________________________________________________
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Pietenpol-List: RE: Mags and A's

Post by matronics »

Original Posted By: Mike Chanter [SMTP:mchanter(at)ford.com]
The surplus mags are at: Army Surplus Warehouse, 635 W. Broadway, PO. Box 1523,Idaho Falls, ID. 83403 208-529-4753. Chad-----Original Message-----
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> Re: Mags and A's

Post by matronics »

Original Posted By:>> John McNarry
Mike, Army Surplus in Idaho for the Slick mags. Call 208-529-4555, ask for Jake.>>to:piet(at)byu.edu>>hi, can anyone re-post the source for the slick surplus mags ?>i somehow lost the address / phone no. thanx, all.>>Best Regards, Mike Chanter>mchanter(at)bigfoot.com>>*** Forwarding note from PNGWDWXY--EXTERNAL 06/24/99 07:38 ***>>From: David B. Schober>Subject: Re: Mags and A's>>From: "David B. Schober">To: "Pietenpol Discussion">>The coils can be used for either direction of rotation. The maindifference is>the cam and the distributor gear. As john stated, a Bendix (Teledyne>Continental) mag can easily be converted from right to left rotation, just>invert the cam and change what teath mesh on the distributor gear. Slickdidn't>give you that option. To change a slick from right ot left your going to have> to>buy parts.>>The points ground the primary to create the circuit. At the instant theyopen,>the flux field collapses and induces an EMF in the secondary just like a>transformer.>>Greg Yotz wrote:>>> -----Original Message-----
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>>>> Re: Mags and A's

Post by matronics »

Original Posted By:>>>>> John McNarry
Subject: Pietenpol-List: Re: Mags and A's>>-----Original Message----->From: Earl Myers >To: Pietenpol Discussion >Date: Friday, June 25, 1999 12:03 PM>Subject: Re: Mags and A's>>I'm thinking about buying out the entire inventory of these mags, and will>sell them to Piet pilots for $117.95, and to GN-1 pilots for free. :O)>>Robert Hensarling>http://www.mesquite-furniture.com>rhrocker(at)admin.hilconet.com>Uvalde, Texas>>>>GUYS!!!!>> I just ordered 4 of these mags. The phone number I got from AT&T was>>208.529.4753. Anyways, they bought 5,000 of them at auction, yeah 5>>thousand! An A&P friend of mine...his eyes got as big as saucers when I>told>>him about what they were and the cost....says they are worth $150 each toa>>homebuilder........some rich guy like Mike Cuy or Steve E., could make>>another fortune with these!!!!>>Earl Myers>>-----Original Message----->>From: Randall Reihing >>To: Pietenpol Discussion >>Date: Thursday, June 24, 1999 4:54 PM>>Subject: Re: Mags and A's>>>>>>>Mike,>>> Army Surplus in Idaho for the Slick mags. Call 208-529-4555, ask for>Jake.>>>>>>>>>>>>>>>>>to:piet(at)byu.edu>>>>>>>>hi, can anyone re-post the source for the slick surplus mags ?>>>>i somehow lost the address / phone no. thanx, all.>>>>>>>>Best Regards, Mike Chanter>>>>mchanter(at)bigfoot.com>>>>>>>>*** Forwarding note from PNGWDWXY--EXTERNAL 06/24/99 07:38 ***>>>>>>>>From: David B. Schober>>>>Subject: Re: Mags and A's>>>>>>>>From: "David B. Schober">>>>To: "Pietenpol Discussion">>>>>>>>The coils can be used for either direction of rotation. The main>>>difference is>>>>the cam and the distributor gear. As john stated, a Bendix (Teledyne>>>>Continental) mag can easily be converted from right to left rotation,>just>>>>invert the cam and change what teath mesh on the distributor gear. Slick>>>didn't>>>>give you that option. To change a slick from right ot left your going to>>have>>>> to>>>>buy parts.>>>>>>>>The points ground the primary to create the circuit. At the instant they>>>open,>>>>the flux field collapses and induces an EMF in the secondary just like a>>>>transformer.>>>>>>>>Greg Yotz wrote:>>>>>>>>> -----Original Message-----
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>>> Re: Mags and A's

Post by matronics »

Original Posted By:>>>> John McNarry
Subject: Pietenpol-List: Re: Mags and A'sI'm thinking about buying out the entire inventory of these mags, and willsell them to Piet pilots for $117.95, and to GN-1 pilots for free. :O)Robert Hensarlinghttp://www.mesquite-furniture.comrhrocker(at)admin.hilconet.comUvalde, Texas>GUYS!!!!> I just ordered 4 of these mags. The phone number I got from AT&T was>208.529.4753. Anyways, they bought 5,000 of them at auction, yeah 5>thousand! An A&P friend of mine...his eyes got as big as saucers when Itold>him about what they were and the cost....says they are worth $150 each to a>homebuilder........some rich guy like Mike Cuy or Steve E., could make>another fortune with these!!!!>Earl Myers>-----Original Message----->From: Randall Reihing >To: Pietenpol Discussion >Date: Thursday, June 24, 1999 4:54 PM>Subject: Re: Mags and A's>>>>Mike,>> Army Surplus in Idaho for the Slick mags. Call 208-529-4555, ask forJake.>>>>>>>>>>>>to:piet(at)byu.edu>>>>>>hi, can anyone re-post the source for the slick surplus mags ?>>>i somehow lost the address / phone no. thanx, all.>>>>>>Best Regards, Mike Chanter>>>mchanter(at)bigfoot.com>>>>>>*** Forwarding note from PNGWDWXY--EXTERNAL 06/24/99 07:38 ***>>>>>>From: David B. Schober>>>Subject: Re: Mags and A's>>>>>>From: "David B. Schober">>>To: "Pietenpol Discussion">>>>>>The coils can be used for either direction of rotation. The main>>difference is>>>the cam and the distributor gear. As john stated, a Bendix (Teledyne>>>Continental) mag can easily be converted from right to left rotation,just>>>invert the cam and change what teath mesh on the distributor gear. Slick>>didn't>>>give you that option. To change a slick from right ot left your going to>have>>> to>>>buy parts.>>>>>>The points ground the primary to create the circuit. At the instant they>>open,>>>the flux field collapses and induces an EMF in the secondary just like a>>>transformer.>>>>>>Greg Yotz wrote:>>>>>>> -----Original Message-----
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: Randall Reihing
GUYS!!!! I just ordered 4 of these mags. The phone number I got from AT&T was208.529.4753. Anyways, they bought 5,000 of them at auction, yeah 5thousand! An A&P friend of mine...his eyes got as big as saucers when I toldhim about what they were and the cost....says they are worth $150 each to ahomebuilder........some rich guy like Mike Cuy or Steve E., could makeanother fortune with these!!!!Earl Myers-----Original Message-----
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: Earl Myers
-----Original Message-----
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Pietenpol-List: Re: Mags and A's

Post by matronics »

Original Posted By: Randall Reihing
Robert, you had me seeing red on that one,......until I carfully rereadthe message. Actually, before I announced the mag info to the group, Ihad considered that option, (Peits, GN-1s, whoever), but I quickly cameto this conclusion; Anything that contributes to the forward progressof Peit builders means more peits in the air, thus a greater chance thatI might see one in its airborne splendor,... and or maby even catch aride. I'm glad these mags turned out to be a good deal. Thanks, Chad-----Original Message-----Subject: Pietenpol-List: Re: Mags and A's-----Original Message-----
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> RE: Mags and A's

Post by matronics »

Original Posted By:> robert hensarling [SMTP:rhrocker(at)admin.hilconet.com]
You got yourself a ride offer Chad. See you at Bhead,Steve EldredgeIT ServicesBrigham Young University> -----Original Message-----> Behalf Of Chad Johnson> Sent: Friday, June 25, 1999 1:45 PM> To: Pietenpol Discussion> Subject: RE: Mags and A's> > Robert, you had me seeing red on that one,......until I > carfully reread the message. Actually, before I announced > the mag info to the group, I had considered that option, > (Peits, GN-1s, whoever), but I quickly came to this > conclusion; Anything that contributes to the forward > progress of Peit builders means more peits in the air, thus a > greater chance that I might see one in its airborne > splendor,... and or maby even catch a ride. I'm glad these > mags turned out to be a good deal. Thanks, Chad> > -----Original Message-----
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Pietenpol-List: Re: Mags and A's

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Original Posted By: robert hensarling
OOOOOHHHHHHHHHH, Good One!-----Original Message-----
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> Re: Mags and A's

Post by matronics »

Original Posted By: "David B. Schober"
> Subject: Re: Mags and A's>> >There are two windings in the mag.> > One of the windings, the primary, is connected to ground at one end and> the> >other end is switched to ground by the points. The capacitor is in parallel> >with the points.>> I think you mean switched to the secondary winding by the points don't you?> (I think this is right but I might be wrong....) GY>> > The second winding is many more turns of a very fine wire with one end> >sharing a common connection with the primary winding. The rotation of the> >armature causes a voltage and a current to flow in the primary as the> >windings move across the magnetic field. The points break this circuit at> >the time of the highest current flow in the primary and the rapid collapse> >of the primary's magnetic field causes a very high voltage to be generated>> Your right, the point at which the field in the primary flux calapses in> relation to the points closing is important and it is not symetrical in the> cycle. Therefore the mag is not reversable without a change.>> ....> >Hope this isn't confusing> >> >John Mc> >> >> >--David B.Schober, CPEInstructor, Aviation MaintenanceFairmont State CollegeNational Aerospace Education Center1050 East Benedum Industrial DriveBridgeport, WV 26330-9503(304) 842-8300________________________________________________________________________________
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> Re: Mags and A's

Post by matronics »

Original Posted By: Chad Johnson
> Subject: Re: Mags and A's>> >There are two windings in the mag.> > One of the windings, the primary, is connected to ground at one end and> the> >other end is switched to ground by the points. The capacitor is in parallel> >with the points.>> I think you mean switched to the secondary winding by the points don't you?> (I think this is right but I might be wrong....) GY>> > The second winding is many more turns of a very fine wire with one end> >sharing a common connection with the primary winding. The rotation of the> >armature causes a voltage and a current to flow in the primary as the> >windings move across the magnetic field. The points break this circuit at> >the time of the highest current flow in the primary and the rapid collapse> >of the primary's magnetic field causes a very high voltage to be generated>> Your right, the point at which the field in the primary flux calapses in> relation to the points closing is important and it is not symetrical in the> cycle. Therefore the mag is not reversable without a change.>> ....> >Hope this isn't confusing> >> >John Mc> >> >> >--David B.Schober, CPEInstructor, Aviation MaintenanceFairmont State CollegeNational Aerospace Education Center1050 East Benedum Industrial DriveBridgeport, WV 26330-9503(304) 842-8300________________________________________________________________________________
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>> Re: Mags and A's

Post by matronics »

Original Posted By: Patrick Panzera
>> Subject: Re: Mags and A's>>>> >There are two windings in the mag.>> > One of the windings, the primary, is connected to ground at one end and>> the>> >other end is switched to ground by the points. The capacitor is inparallel>> >with the points.>>>> I think you mean switched to the secondary winding by the points don't you?>> (I think this is right but I might be wrong....) GY>>>> > The second winding is many more turns of a very fine wire with one end>> >sharing a common connection with the primary winding. The rotation of the>> >armature causes a voltage and a current to flow in the primary as the>> >windings move across the magnetic field. The points break this circuit at>> >the time of the highest current flow in the primary and the rapid collapse>> >of the primary's magnetic field causes a very high voltage to be generated>>>> Your right, the point at which the field in the primary flux calapses in>> relation to the points closing is important and it is not symetrical in the>> cycle. Therefore the mag is not reversable without a change.>>>> ....>> >Hope this isn't confusing>> >>> >John Mc>> >>> >>> >>>>-->>David B.Schober, CPE>Instructor, Aviation Maintenance>Fairmont State College>National Aerospace Education Center>1050 East Benedum Industrial Drive>Bridgeport, WV 26330-9503>(304) 842-8300>>Randall ReihingUniversity of ToledoCollege of EngineeringMIME Department419-530-8244FAX: 419-530-8206E-Mail: rreihing(at)eng.utoledo.edu________________________________________________________________________________
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>>> Re: Mags and A's

Post by matronics »

Original Posted By: Michael D Cuy
>>> Subject: Re: Mags and A's>>>>>> >There are two windings in the mag.>>> > One of the windings, the primary, is connected to ground at one endand>>> the>>> >other end is switched to ground by the points. The capacitor is in>parallel>>> >with the points.>>>>>> I think you mean switched to the secondary winding by the points don'tyou?>>> (I think this is right but I might be wrong....) GY>>>>>> > The second winding is many more turns of a very fine wire with one end>>> >sharing a common connection with the primary winding. The rotation ofthe>>> >armature causes a voltage and a current to flow in the primary as the>>> >windings move across the magnetic field. The points break this circuitat>>> >the time of the highest current flow in the primary and the rapidcollapse>>> >of the primary's magnetic field causes a very high voltage to begenerated>>>>>> Your right, the point at which the field in the primary flux calapses in>>> relation to the points closing is important and it is not symetrical inthe>>> cycle. Therefore the mag is not reversable without a change.>>>>>> ....>>> >Hope this isn't confusing>>> >>>> >John Mc>>> >>>> >>>> >>>>>>>>>-->>***>>David B.Schober, CPE>>Instructor, Aviation Maintenance>>Fairmont State College>>National Aerospace Education Center>>1050 East Benedum Industrial Drive>>Bridgeport, WV 26330-9503>>(304) 842-8300>>>>>>>>>>>>>>>Randall Reihing>University of Toledo>College of Engineering>MIME Department>419-530-8244>FAX: 419-530-8206>E-Mail: rreihing(at)eng.utoledo.edu>>________________________________________________________________________________
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>>>> Re: Mags and A's

Post by matronics »

Original Posted By: Patrick Panzera
>>>> Subject: Re: Mags and A's>>>>>>>> >There are two windings in the mag.>>>> > One of the windings, the primary, is connected to ground at one end>and>>>> the>>>> >other end is switched to ground by the points. The capacitor is in>>parallel>>>> >with the points.>>>>>>>> I think you mean switched to the secondary winding by the points don't>you?>>>> (I think this is right but I might be wrong....) GY>>>>>>>> > The second winding is many more turns of a very fine wire with oneend>>>> >sharing a common connection with the primary winding. The rotation of>the>>>> >armature causes a voltage and a current to flow in the primary as the>>>> >windings move across the magnetic field. The points break this circuit>at>>>> >the time of the highest current flow in the primary and the rapid>collapse>>>> >of the primary's magnetic field causes a very high voltage to be>generated>>>>>>>> Your right, the point at which the field in the primary flux calapsesin>>>> relation to the points closing is important and it is not symetrical in>the>>>> cycle. Therefore the mag is not reversable without a change.>>>>>>>> ....>>>> >Hope this isn't confusing>>>> >>>>> >John Mc>>>> >>>>> >>>>> >>>>>>>>>>>>>-->>>*>***>>>David B.Schober, CPE>>>Instructor, Aviation Maintenance>>>Fairmont State College>>>National Aerospace Education Center>>>1050 East Benedum Industrial Drive>>>Bridgeport, WV 26330-9503>>>(304) 842-8300>>>>>>>>>>>>>>>>>>>>>>>Randall Reihing>>University of Toledo>>College of Engineering>>MIME Department>>419-530-8244>>FAX: 419-530-8206>>E-Mail: rreihing(at)eng.utoledo.edu>>>>>>________________________________________________________________________________
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> >>> Re: Mags and A's

Post by matronics »

Original Posted By:> >>>> John McNarry
> Subject: Re: Mags and A's> > I'm thinking about buying out the entire inventory of these > mags, and will> sell them to Piet pilots for $117.95, and to GN-1 pilots for > free. :O)> > Robert Hensarling> http://www.mesquite-furniture.com> rhrocker(at)admin.hilconet.com> Uvalde, Texas> > > >GUYS!!!!> > I just ordered 4 of these mags. The phone number I got from AT&T was> >208.529.4753. Anyways, they bought 5,000 of them at auction, yeah 5> >thousand! An A&P friend of mine...his eyes got as big as > saucers when I> told> >him about what they were and the cost....says they are worth > $150 each to a> >homebuilder........some rich guy like Mike Cuy or Steve E., > could make> >another fortune with these!!!!> >Earl Myers> >-----Original Message-----> >From: Randall Reihing > >To: Pietenpol Discussion > >Date: Thursday, June 24, 1999 4:54 PM> >Subject: Re: Mags and A's> >> >> >>Mike,> >> Army Surplus in Idaho for the Slick mags. Call > 208-529-4555, ask for> Jake.> >>> >>> >>> >>>> >>>to:piet(at)byu.edu> >>>> >>>hi, can anyone re-post the source for the slick surplus mags ?> >>>i somehow lost the address / phone no. thanx, all.> >>>> >>>Best Regards, Mike Chanter> >>>mchanter(at)bigfoot.com> >>>> >>>*** Forwarding note from PNGWDWXY--EXTERNAL 06/24/99 07:38 ***> >>>> >>>From: David B. Schober> >>>Subject: Re: Mags and A's> >>>> >>>From: "David B. Schober"> >>>To: "Pietenpol Discussion"> >>>> >>>The coils can be used for either direction of rotation. The main> >>difference is> >>>the cam and the distributor gear. As john stated, a Bendix > (Teledyne> >>>Continental) mag can easily be converted from right to > left rotation,> just> >>>invert the cam and change what teath mesh on the > distributor gear. Slick> >>didn't> >>>give you that option. To change a slick from right ot left > your going to> >have> >>> to> >>>buy parts.> >>>> >>>The points ground the primary to create the circuit. At > the instant they> >>open,> >>>the flux field collapses and induces an EMF in the > secondary just like a> >>>transformer.> >>>> >>>Greg Yotz wrote:> >>>> >>>> -----Original Message-----
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> >>>> Re: Mags and A's

Post by matronics »

Original Posted By: Gary Gower
> >>>> Subject: Re: Mags and A's> >>>>> >>>> >There are two windings in the mag.> >>>> > One of the windings, the primary, is connected to > ground at one end> >and> >>>> the> >>>> >other end is switched to ground by the points. The > capacitor is in> >>parallel> >>>> >with the points.> >>>>> >>>> I think you mean switched to the secondary winding by > the points don't> >you?> >>>> (I think this is right but I might be wrong....) GY> >>>>> >>>> > The second winding is many more turns of a very fine > wire with one> end> >>>> >sharing a common connection with the primary winding. > The rotation of> >the> >>>> >armature causes a voltage and a current to flow in the > primary as the> >>>> >windings move across the magnetic field. The points > break this circuit> >at> >>>> >the time of the highest current flow in the primary and > the rapid> >collapse> >>>> >of the primary's magnetic field causes a very high voltage to be> >generated> >>>>> >>>> Your right, the point at which the field in the primary > flux calapses> in> >>>> relation to the points closing is important and it is > not symetrical in> >the> >>>> cycle. Therefore the mag is not reversable without a change.> >>>>> >>>> ....> >>>> >Hope this isn't confusing> >>>> >> >>>> >John Mc> >>>> >> >>>> >> >>>> >> >>>> >>>> >>>> >>>--> >>>> *> >***> >>>David B.Schober, CPE> >>>Instructor, Aviation Maintenance> >>>Fairmont State College> >>>National Aerospace Education Center> >>>1050 East Benedum Industrial Drive> >>>Bridgeport, WV 26330-9503> >>>(304) 842-8300> >>>> >>>> >>>When once you have tasted flight, you will always walk > with your eyes> >>>turned skyward, for there you have been and there you will > always be.> >>>> >>>> >>>> >>>> >>>> >>Randall Reihing> >>University of Toledo> >>College of Engineering> >>MIME Department> >>419-530-8244> >>FAX: 419-530-8206> >>E-Mail: rreihing(at)eng.utoledo.edu> >>> >>> >> > ________________________________________________________________________________
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>>>>> Re: Mags and A's

Post by matronics »

Original Posted By: "Mr. Carmen A. Natalie"
>>>>> Subject: Re: Mags and A's>>>>>>>>>> >There are two windings in the mag.>>>>> > One of the windings, the primary, is connected to ground at one end>>and>>>>> the>>>>> >other end is switched to ground by the points. The capacitor is in>>>parallel>>>>> >with the points.>>>>>>>>>> I think you mean switched to the secondary winding by the points don't>>you?>>>>> (I think this is right but I might be wrong....) GY>>>>>>>>>> > The second winding is many more turns of a very fine wire with one>end>>>>> >sharing a common connection with the primary winding. The rotationof>>the>>>>> >armature causes a voltage and a current to flow in the primary as the>>>>> >windings move across the magnetic field. The points break thiscircuit>>at>>>>> >the time of the highest current flow in the primary and the rapid>>collapse>>>>> >of the primary's magnetic field causes a very high voltage to be>>generated>>>>>>>>>> Your right, the point at which the field in the primary flux calapses>in>>>>> relation to the points closing is important and it is not symetricalin>>the>>>>> cycle. Therefore the mag is not reversable without a change.>>>>>>>>>> ....>>>>> >Hope this isn't confusing>>>>> >>>>>> >John Mc>>>>> >>>>>> >>>>>> >>>>>>>>>>>>>>>>>-->>>>*>*>>***>>>>David B.Schober, CPE>>>>Instructor, Aviation Maintenance>>>>Fairmont State College>>>>National Aerospace Education Center>>>>1050 East Benedum Industrial Drive>>>>Bridgeport, WV 26330-9503>>>>(304) 842-8300>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>Randall Reihing>>>University of Toledo>>>College of Engineering>>>MIME Department>>>419-530-8244>>>FAX: 419-530-8206>>>E-Mail: rreihing(at)eng.utoledo.edu>>>>>>>>>>>>________________________________________________________________________________
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> >> Re: Mags and A's

Post by matronics »

Original Posted By:> >>> John McNarry
> Subject: Re: Mags and A's>> >Mike,> > Army Surplus in Idaho for the Slick mags. Call 208-529-4555, ask for Jake.> >> >> >> >>> >>to:piet(at)byu.edu> >>> >>hi, can anyone re-post the source for the slick surplus mags ?> >>i somehow lost the address / phone no. thanx, all.> >>> >>Best Regards, Mike Chanter> >>mchanter(at)bigfoot.com> >>> >>*** Forwarding note from PNGWDWXY--EXTERNAL 06/24/99 07:38 ***> >>> >>From: David B. Schober> >>Subject: Re: Mags and A's> >>> >>From: "David B. Schober"> >>To: "Pietenpol Discussion"> >>> >>The coils can be used for either direction of rotation. The main> >difference is> >>the cam and the distributor gear. As john stated, a Bendix (Teledyne> >>Continental) mag can easily be converted from right to left rotation, just> >>invert the cam and change what teath mesh on the distributor gear. Slick> >didn't> >>give you that option. To change a slick from right ot left your going to> have> >> to> >>buy parts.> >>> >>The points ground the primary to create the circuit. At the instant they> >open,> >>the flux field collapses and induces an EMF in the secondary just like a> >>transformer.> >>> >>Greg Yotz wrote:> >>> >>> -----Original Message-----
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> >>> Re: Mags and A's

Post by matronics »

Original Posted By: Patrick Panzera
> >>> Subject: Re: Mags and A's> >>>> >>> >There are two windings in the mag.> >>> > One of the windings, the primary, is connected to ground at one end> and> >>> the> >>> >other end is switched to ground by the points. The capacitor is in> >parallel> >>> >with the points.> >>>> >>> I think you mean switched to the secondary winding by the points don't> you?> >>> (I think this is right but I might be wrong....) GY> >>>> >>> > The second winding is many more turns of a very fine wire with one end> >>> >sharing a common connection with the primary winding. The rotation of> the> >>> >armature causes a voltage and a current to flow in the primary as the> >>> >windings move across the magnetic field. The points break this circuit> at> >>> >the time of the highest current flow in the primary and the rapid> collapse> >>> >of the primary's magnetic field causes a very high voltage to be> generated> >>>> >>> Your right, the point at which the field in the primary flux calapses in> >>> relation to the points closing is important and it is not symetrical in> the> >>> cycle. Therefore the mag is not reversable without a change.> >>>> >>> ....> >>> >Hope this isn't confusing> >>> >> >>> >John Mc> >>> >> >>> >> >>> >> >>> >>> >>> >>--> >>> ***> >>David B.Schober, CPE> >>Instructor, Aviation Maintenance> >>Fairmont State College> >>National Aerospace Education Center> >>1050 East Benedum Industrial Drive> >>Bridgeport, WV 26330-9503> >>(304) 842-8300> >>> >>> >>> >>> >>> >>> >>> >Randall Reihing> >University of Toledo> >College of Engineering> >MIME Department> >419-530-8244> >FAX: 419-530-8206> >E-Mail: rreihing(at)eng.utoledo.edu> >> >________________________________________________________________________________
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