---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Thu 03/08/12: 12 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 03:50 AM - Re: Re: Landing gear type: Pros and Cons, Steel or wood? (Jack) 2. 06:10 AM - Re: Landing gear type: Pros and Cons, Steel or wood? (899PM) 3. 06:18 AM - tornado near miss... (Douwe Blumberg) 4. 07:39 AM - Re: Re: Landing gear type: Pros and Cons, Steel or wood? (Michael Perez) 5. 08:03 AM - Re: Landing gear type: Pros and Cons, Steel or wood? (Bill Church) 6. 09:05 AM - Re: Re: Bendix magneto starting issues (Bill Princell) 7. 10:08 AM - Re: Re: Landing gear type: Pros and Cons, Steel or wood? (Michael Perez) 8. 11:05 AM - Re: Landing gear type: Pros and Cons, Steel or wood? (Mark Roberts) 9. 02:17 PM - Re: Re: Bendix magneto starting issues (Jim Ash) 10. 02:48 PM - Re: center section storage lid hinge-to-front spar (Kyle85) 11. 02:52 PM - Re: Re: Landing gear type: Pros and Cons, Steel or wood? (Michael Perez) 12. 05:10 PM - Re: Re: Landing gear type: Pros and Cons, Steel or wood? (Ray Krause) ________________________________ Message 1 _____________________________________ Time: 03:50:20 AM PST US From: "Jack" Subject: RE: Pietenpol-List: Re: Landing gear type: Pros and Cons, Steel or wood? Mark, Both gear systems have there advantages and disadvantages as has been reported. I'm currently destroying a lot of 4130 on my split gear. Despite all the measuring, fitting and cutting I'm still having problems getting perfect fits. After a week I only have the left front V done. All part of the fun. Jack Textor DSM NX1929T -----Original Message----- From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Mark Roberts Sent: Wednesday, March 07, 2012 11:26 PM Subject: Pietenpol-List: Re: Landing gear type: Pros and Cons, Steel or wood? Hey Guys! Many, Many thanks for these comments. It is EXACTLY what I was hoping to learn from ya'll. I am encouraged to know others have thought this one out ahead of time (Duh... It IS an 80 year old design after all :o) My main concern is my inexperience with metal. I am going to take the plans to my welding friend soon and ask him about it. The best metal gear I've seen is Charlie Millers' gear with the streamlined tubing for the legs. Very sturdy, but re-designing stuff like this isn't my cup of tea. So, I'm going to re-read all of this again, but want to thank ya'll again for the help. It is this kind of interaction that really makes this group special. And, thanks for the kind words about the Mrs. in the front seat! :o) She's only 5'2", so I need to raise the seat a bit when I put it in... Ha! She'll get all the bugs in the teeth for me ! Mark Read this topic online here: http://forums.matronics.com/viewtopic.php?p=367964#367964 ________________________________ Message 2 _____________________________________ Time: 06:10:39 AM PST US Subject: Pietenpol-List: Re: Landing gear type: Pros and Cons, Steel or wood? From: "899PM" raykrause(at)frontiernet. wrote: > Papa Mike, > > How did you make the wheel covers, and how are they attached to the wheel? > Surely they are not riveted to the rim? > > Thanks, > > Ray Krause > Sky Scout in progress > --- Ray, The wheel covers are a conic development. Started with flat sheet and calculated the diameters to produce the desired "cone". The covers are bolted to the flanges of the hub. The rivets in the periphery are purely cosmetic. The wheels shown in the pic were my prototypes. The attached pics show the final version. A lot of work....but they sure look neat! I designed them to use the early Tri-Pacer mechanical brakes. -------- PAPA MIKE Read this topic online here: http://forums.matronics.com/viewtopic.php?p=367973#367973 Attachments: http://forums.matronics.com//files/wheel7_183.jpg http://forums.matronics.com//files/wheel6_150.jpg http://forums.matronics.com//files/wheel3_140.jpg ________________________________ Message 3 _____________________________________ Time: 06:18:54 AM PST US From: "Douwe Blumberg" Subject: Pietenpol-List: tornado near miss... Thanks for asking Larry, We were VERY blessed here. As best I can tell, the storm came right at our house and a few miles out split in two. A tornado touched town a couple miles south of us and one touched down a couple miles north and killed five people and destroyed a LOT of homes and property. Just drove through it yesterday and it was amazing. We on the other hand got some powerful wind for about fifteen minutes and then sunshine. We're off helping our neighbors, some of which don't have home insurance. Progress report. Am waiting on my fourth ACS order trying to get the right AN fittings to hook up the oil pressure gauge (don't ask.) then I can run this baby!! Douwe ________________________________ Message 4 _____________________________________ Time: 07:39:02 AM PST US From: Michael Perez Subject: Re: Pietenpol-List: Re: Landing gear type: Pros and Cons, Steel or wood? If I may make a suggestion Mark, leave that front seat at the height shown and just add a cushion(s) as needed. She will then be comfy and you still have the option of fitting taller people in there for quick rides. Michael Perez Karetaker Aero www.karetakeraero.com ________________________________ Message 5 _____________________________________ Time: 08:03:14 AM PST US Subject: Pietenpol-List: Re: Landing gear type: Pros and Cons, Steel or wood? From: "Bill Church" Don't tell anyone, but reading between the lines, it sounds as though Michael Perez is saying to "build it to the plans". Believe it or not. :) Bill C. do not archive > If I may make a suggestion Mark, leave that front seat at the height shown and just add a cushion(s) as needed. She will then be comfy and you still have the option of fitting taller people in there for quick rides. > > Michael Perez > Read this topic online here: http://forums.matronics.com/viewtopic.php?p=367990#367990 ________________________________ Message 6 _____________________________________ Time: 09:05:22 AM PST US From: Bill Princell Subject: Re: Pietenpol-List: Re: Bendix magneto starting issues How do you go about matching the condenser to the coil to work most effectively? Bill Princell - This process requires that the condenser be matched to the coil to work most effectively. The coil has a certain inductance and the condenser has a certain capacitance. Each one of these has its own frequency characteristics. Pairing them up creates a specific resonant frequency dependent on both components. But if they're not matched (like a burned-out condenser), the resonant frequency changes. On Wed, Mar 7, 2012 at 1:52 PM, Dortch, Steven D MAJ NG NG NGB < steven.d.dortch@us.army.mil> wrote: > steven.d.dortch@us.army.mil> > > For a good review of Mags and mag problems check out this EAA video. > > http://www.eaavideo.org/video.aspx?v=1367499350001 > > The guy is truely an expert. > > Blue Skies, > Steve D > > ________________________________ Message 7 _____________________________________ Time: 10:08:13 AM PST US From: Michael Perez Subject: Re: Pietenpol-List: Re: Landing gear type: Pros and Cons, Steel or wood? Just for the front seat Bill, just for the front seat! Michael Perez Karetaker Aero www.karetakeraero.com Do not archive ________________________________ Message 8 _____________________________________ Time: 11:05:50 AM PST US Subject: Pietenpol-List: Re: Landing gear type: Pros and Cons, Steel or wood? From: "Mark Roberts" Ha! Thanks Michael! I didn't even think about the fact I'd be cutting others out of the comfort of the windscreen by jacking the seat up a few inches! Funny, but that just saved me a serious "Oops" that wouldn't have been easy to correct! Love the wheel covers too Papa Mike! Mark Read this topic online here: http://forums.matronics.com/viewtopic.php?p=368017#368017 ________________________________ Message 9 _____________________________________ Time: 02:17:53 PM PST US From: Jim Ash Subject: Re: Pietenpol-List: Re: Bendix magneto starting issues I'm still digesting Dave Galdrich's note on this from yesterday and formulating a response, so I'm questioning my understanding of the concepts at this point and hesitate to answer. If Dave is right, then the capacitance of the condenser will be a lot different (probably lower-valued) than what I thought, and I owe you all an apology for my incorrect email. My short, somewhat flippant answer to you would be 'Whatever the book tells you', which unfortunately leaves the engineering to some ominous 'them'. Most automotive condensers I can recall have been around around .2uF to .3uF. If you want to get into tank circuit theory, we can do that, but if this system isn't really a tank, it's only a cute academic exercise. I've been running through my head on where I can find a breaker-point-driven engine and hook an oscilloscope to it to check it out. I just got a boat engine (140 hp 4-cyl GM block on a Merc I/O drive) to run for a friend a couple weeks ago and got to thinking about breaker point systems again, so I did some web surfing last week on it to refresh myself. Rather timely considering this recent discussion. That's where I ran across the theory that it was a tank circuit, but I haven't so far been able to find that page again. I'm familiar with tank circuits, I just didn't realize this was one of them, and now Dave is saying it ain't. My scopes are off in a corner of my basement and not set up right now; they're old and not real portable. I suppose I could drag one out and hook it to my snow blower; this winter has really sucked for snow (I ski and snowboard) and I'm not expecting to need it again until next winter anyhow. Jim Ash -----Original Message----- From: Bill Princell Sent: Mar 8, 2012 12:02 PM Subject: Re: Pietenpol-List: Re: Bendix magneto starting issues How do you go about matching the condenser to the coil to work most effectively? Bill Princell - This process requires that the condenser be matched to the coil to work most effectively. The coil has a certain inductance and the condenser has a certain capacitance. Each one of these has its own frequency characteristics. Pairing them up creates a specific resonant frequency dependent on both components. But if they're not matched (like a burned-out condenser), the resonant frequency changes. On Wed, Mar 7, 2012 at 1:52 PM, Dortch, Steven D MAJ NG NG NGB wrote: For a good review of Mags and mag problems check out this EAA video. http://www.eaavideo.org/video.aspx?v=1367499350001 The guy is truely an expert. Blue Skies, Steve D ========== st" target="_blank">http://www.matronics.com/Navigator?Pietenpol-List ========== http://forums.matronics.com ========== le, List Admin. ="_blank">http://www.matronics.com/contribution ========== ________________________________ Message 10 ____________________________________ Time: 02:48:15 PM PST US Subject: Pietenpol-List: Re: center section storage lid hinge-to-front spar From: "Kyle85" Just would like to thank Mr. Cuy for giving me this idea for the center wing lid. Here is my version so far.. -------- Airspeed, altitude or brains: Two are always needed to successfully complete the flight. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=368032#368032 Attachments: http://forums.matronics.com//files/img_0443_640x478_181.jpg http://forums.matronics.com//files/img_0445_640x478_571.jpg http://forums.matronics.com//files/img_0447_640x478_3_168.jpg ________________________________ Message 11 ____________________________________ Time: 02:52:00 PM PST US From: Michael Perez Subject: Re: Pietenpol-List: Re: Landing gear type: Pros and Cons, Steel or wood? You're welcome. - -I actually lowered my seat because I will always fly with a seat cushion .- I left the front seat- alone, but will have a-cushion for those wh o want one, or for shorter passengers. Michael Perez Karetaker Aero www.karetakeraero.com ________________________________ Message 12 ____________________________________ Time: 05:10:20 PM PST US From: "Ray Krause" Subject: Re: Pietenpol-List: Re: Landing gear type: Pros and Cons, Steel or wood? Thanks, Mike! Beautiful work. Is that wheel convex on only the outside? In bicycles that is called "dished", as in the rear wheel with an 8-10 speed cog. Looks as though only the outside of you disc is convex. Thanks again for the wonderful pictures. Now I have another project. Ray Krause ----- Original Message ----- From: "899PM" Sent: Thursday, March 08, 2012 6:09 AM Subject: Pietenpol-List: Re: Landing gear type: Pros and Cons, Steel or wood? > > > raykrause(at)frontiernet. wrote: >> Papa Mike, >> >> How did you make the wheel covers, and how are they attached to the >> wheel? >> Surely they are not riveted to the rim? >> >> Thanks, >> >> Ray Krause >> Sky Scout in progress >> --- > > > Ray, > > The wheel covers are a conic development. Started with flat sheet and > calculated the diameters to produce the desired "cone". The covers are > bolted to the flanges of the hub. The rivets in the periphery are purely > cosmetic. The wheels shown in the pic were my prototypes. The attached > pics show the final version. A lot of work....but they sure look neat! I > designed them to use the early Tri-Pacer mechanical brakes. > > -------- > PAPA MIKE > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=367973#367973 > > > Attachments: > > http://forums.matronics.com//files/wheel7_183.jpg > http://forums.matronics.com//files/wheel6_150.jpg > http://forums.matronics.com//files/wheel3_140.jpg > > > ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message pietenpol-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Pietenpol-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/pietenpol-list Browse Digests http://www.matronics.com/digest/pietenpol-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.