---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Sat 11/28/09: 5 ---------------------------------------------------------- Today's Message Index: ---------------------- 0. 12:29 AM - No "Black Friday" For List Fund Raiser... (Matt Dralle) 1. 02:51 AM - Re: built up spars (ivan.todorovic) 2. 03:36 AM - Re: Re: built up spars (Peter W Johnson) 3. 04:48 AM - Re: Re: built up spars (Ryan Mueller) 4. 05:35 AM - Re: built up spars (ivan.todorovic) ________________________________ Message 0 _____________________________________ Time: 12:29:13 AM PST US From: Matt Dralle Subject: Pietenpol-List: No "Black Friday" For List Fund Raiser... Even though the number of List subscriptions and List posts are up significantly this year compared to last year, support during this year's List Fund Raiser has been woefully lagging from last year. There are only a couple more days left in November and the end of the Fund Raiser is quickly approaching. I have always preferred a non-commercial List experience as many, many members have also expressed that they do as well. However, if the yearly fund raiser cannot generate sufficient funds to keep the bills paid on the List service expenses, I will have to look into some sort of advertising. Please don't let that happen! Your personal contribution of $20 or $30 goes a long ways to keeping the operation a float. The lunch combo at Carl's Jr costs nearly $10 these days. Isn't the List worth at least as much as a couple of burgers? Please make sure your name is on this year's List of Contributors published in December. The Contribution site is secure, quick, and easy: http://www.matronics.com/contribution Thank you in advance for your support! Matt Dralle Matronics Email List and Forum Administrator ________________________________ Message 1 _____________________________________ Time: 02:51:48 AM PST US Subject: Pietenpol-List: Re: built up spars From: "ivan.todorovic" OK, Peter, I've got it. I hope I'll draw the rear spar as soon as I get some time. My plans arrived last week, I've bought a set of Grega plans from James Thursby (Thank's to Matronics list for finding the available set), and now I'm in "finding wood" phase. There is no "Aircraft spruce" or shops like that here where I live, as a meter of fact the spruce doesn't grow on this continent, I have to actually call and go search the lumberyards (go ahead, laugh). Last but not least - I have to draw this modification for Riblett I'm planing to build... Busy time ahead. One more question: This additional width of the spars also needs to make a room for the spar in the rib wider, but in which direction? On both sides symmetrical to the center of the spar, or on the inside of the wing, further from the leading and trailing edge? Regards, Ivan Read this topic online here: http://forums.matronics.com/viewtopic.php?p=275198#275198 ________________________________ Message 2 _____________________________________ Time: 03:36:09 AM PST US From: "Peter W Johnson" Subject: RE: Pietenpol-List: Re: built up spars Ivan, My Pietenpol plans show the front spar as 1 1/8" and the rear at 1". These are the same dimensions as the UK plans (7/8" caps with 2 x 1/8" ply for the front and 3/4" caps with 2 x 1/8" ply on the rear). I made my ribs first and followed Bernard's plans. I didn't change anything to get them to fit the box spars. Cheers Peter -----Original Message----- From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of ivan.todorovic Sent: Saturday, 28 November 2009 9:51 PM Subject: Pietenpol-List: Re: built up spars OK, Peter, I've got it. I hope I'll draw the rear spar as soon as I get some time. My plans arrived last week, I've bought a set of Grega plans from James Thursby (Thank's to Matronics list for finding the available set), and now I'm in "finding wood" phase. There is no "Aircraft spruce" or shops like that here where I live, as a meter of fact the spruce doesn't grow on this continent, I have to actually call and go search the lumberyards (go ahead, laugh). Last but not least - I have to draw this modification for Riblett I'm planing to build... Busy time ahead. One more question: This additional width of the spars also needs to make a room for the spar in the rib wider, but in which direction? On both sides symmetrical to the center of the spar, or on the inside of the wing, further from the leading and trailing edge? Regards, Ivan Read this topic online here: http://forums.matronics.com/viewtopic.php?p=275198#275198 ________________________________ Message 3 _____________________________________ Time: 04:48:33 AM PST US Subject: Re: Pietenpol-List: Re: built up spars From: Ryan Mueller Ivan, At least with the actual Pietenpol plans, when dealing with ribs and different spar widths (original 1" routed, 3/4" solid, etc) you want to maintain the 27 3/4" dimension (if my memory is correct) between the front and rear spar, as this corresponds to the cabane struts coming off the fuselage. Or you could think of it as the rear face of the front spar and the front face of the rear spar being immovable, as constants. If you are going to increase or decrease spar width you would "move" the front face of the front spar, or the rear face of the rear spar and adjust your ribs accordingly. Again, this is with the Pietenpol plans; your mileage may vary with the Grega Plans. Ryan On Sat, Nov 28, 2009 at 4:51 AM, ivan.todorovic wrote: > s> > > OK, Peter, I've got it. > > I hope I'll draw the rear spar as soon as I get some time. My plans arrived > last week, I've bought a set of Grega plans from James Thursby (Thank's to > Matronics list for finding the available set), and now I'm in "finding wood" > phase. There is no "Aircraft spruce" or shops like that here where I live, > as a meter of fact the spruce doesn't grow on this continent, I have to > actually call and go search the lumberyards (go ahead, laugh). Last but not > least - I have to draw this modification for Riblett I'm planing to build... > Busy time ahead. > > One more question: This additional width of the spars also needs to make a > room for the spar in the rib wider, but in which direction? On both sides > symmetrical to the center of the spar, or on the inside of the wing, further > from the leading and trailing edge? > > Regards, > Ivan > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=275198#275198 > > ________________________________ Message 4 _____________________________________ Time: 05:35:10 AM PST US Subject: Pietenpol-List: Re: built up spars From: "ivan.todorovic" Ryan, Your second option seems logical to me. Luckily, Peter has the original box-spar plans in his possession, we will see what the designer of Piet box-spar thinks about that detail. Ivan [quote="Ryan Mueller"]Ivan, At least with the actual Pietenpol plans, when dealing with ribs and different spar widths (original 1" routed, 3/4" solid, etc) you want to maintain the 27 3/4" dimension (if my memory is correct) between the front and rear spar, as this corresponds to the cabane struts coming off the fuselage. Or you could think of it as the rear face of the front spar and the front face of the rear spar being immovable, as constants. If you are going to increase or decrease spar width you would "move" the front face of the front spar, or the rear face of the rear spar and adjust your ribs accordingly. Again, this is with the Pietenpol plans; your mileage may vary with the Grega Plans. Ryan On Sat, Nov 28, 2009 at 4:51 AM, ivan.todorovic wrote: > > > OK, Peter, I've got it. > > I hope I'll draw the rear spar as soon as I get some time. My plans arrived last week, I've bought a set of Grega plans from James Thursby (Thank's to Matronics list for finding the available set), and now I'm in "finding wood" phase. There is no "Aircraft spruce" or shops like that here where I live, as a meter of fact the spruce doesn't grow on this continent, I have to actually call and go search the lumberyards (go ahead, laugh). Last but not least - I have to draw this modification for Riblett I'm planing to build... Busy time ahead. > > One more question: This additional width of the spars also needs to make a room for the spar in the rib wider, but in which direction? On both sides symmetrical to the center of the spar, or on the inside of the wing, further from the leading and trailing edge? > > > Regards, > Ivan > > > > > Read this topic online here: > > > http://forums.matronics.com/viewtopic.php?p=275198#275198 (http://forums.matronics.com/viewtopic.php?p=275198#275198) > > > > > > > > > ========== > ="_blank">www.aeroelectric.com > ooks.com" target="_blank">www.buildersbooks.com > et="_blank">www.homebuilthelp.com > ="_blank">http://www.matronics.com/contribution > le, List Admin. > ========== > st" target="_blank">http://www.matronics.com/Navigator?Pietenpol-List > ========== > http://forums.matronics.com > ========== > > > > > > [b] Read this topic online here: http://forums.matronics.com/viewtopic.php?p=275202#275202 ------------------------------------------------------------------------------------- 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.