---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Tue 10/07/14: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 04:09 PM - lift struts 2 (Bill R) 2. 04:51 PM - Re: lift struts 2 (Gary Boothe) 3. 07:55 PM - Re: Pietenpol-List Digest: 2 Msgs - 10/05/14 (Temp623j) 4. 08:18 PM - Re: lift struts 2 (Clif Dawson) ________________________________ Message 1 _____________________________________ Time: 04:09:54 PM PST US Subject: Pietenpol-List: lift struts 2 From: "Bill R" ok, lets go down this road a little further. I am still trying to determine if the aluminum lift struts from Carlson A/C are adequate for a Pietenpol. I know there are Piets out there flying with these struts,Dan Helspers being one of them. (thanks Dan for your previous response and detailed photos). But I am still looking at the numbers and have come up with a very unscientific conclusion. If I built in a big fudge factor by using a gross weight of 1320 lbs. and stressed the airframe to 6 G's. that comes out to 7920 lbs. The small lift struts from Carlson has a shear load capacity of 11,600 lbs. If the load is then divided by 4 (4 struts), it would appear that these aluminum struts are easily capable of of handling the job. But alas, this is just to simple,I have to be missing something. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=431626#431626 ________________________________ Message 2 _____________________________________ Time: 04:51:03 PM PST US From: "Gary Boothe" Subject: RE: Pietenpol-List: lift struts 2 You are. Cabanes share that load. The picture is even better than you compute. Gary Boothe NX308MB -----Original Message----- From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of Bill R Sent: Tuesday, October 07, 2014 4:09 PM Subject: Pietenpol-List: lift struts 2 ok, lets go down this road a little further. I am still trying to determine if the aluminum lift struts from Carlson A/C are adequate for a Pietenpol. I know there are Piets out there flying with these struts,Dan Helspers being one of them. (thanks Dan for your previous response and detailed photos). But I am still looking at the numbers and have come up with a very unscientific conclusion. If I built in a big fudge factor by using a gross weight of 1320 lbs. and stressed the airframe to 6 G's. that comes out to 7920 lbs. The small lift struts from Carlson has a shear load capacity of 11,600 lbs. If the load is then divided by 4 (4 struts), it would appear that these aluminum struts are easily capable of of handling the job. But alas, this is just to simple,I have to be missing something. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=431626#431626 ________________________________ Message 3 _____________________________________ Time: 07:55:56 PM PST US Subject: Pietenpol-List: Re: Pietenpol-List Digest: 2 Msgs - 10/05/14 From: Temp623j > On Oct 6, 2014, at 3:02 AM, Pietenpol-List Digest Server wrote: > > * > > ================================================= > Online Versions of Today's List Digest Archive > ================================================= > > Today's complete Pietenpol-List Digest can also be found in either of the > two Web Links listed below. The .html file includes the Digest formatted > in HTML for viewing with a web browser and features Hyperlinked Indexes > and Message Navigation. The .txt file includes the plain ASCII version > of the Pietenpol-List Digest and can be viewed with a generic text editor > such as Notepad or with a web browser. > > HTML Version: > > http://www.matronics.com/digest/digestview.php?Style=82701&View=html&Chapter 14-10-05&Archive=Pietenpol > > Text Version: > > http://www.matronics.com/digest/digestview.php?Style=82701&View=txt&Chapter 14-10-05&Archive=Pietenpol > > > =============================================== > EMail Version of Today's List Digest Archive > =============================================== > > > ---------------------------------------------------------- > Pietenpol-List Digest Archive > --- > Total Messages Posted Sun 10/05/14: 2 > ---------------------------------------------------------- > > > Today's Message Index: > ---------------------- > > 1. 10:34 AM - Re: riblett 612 (nightmare) > 2. 06:48 PM - Fw: Nose stand (Steven Dortch) > > > > ________________________________ Message 1 _____________________________________ > > > Time: 10:34:49 AM PST US > Subject: Pietenpol-List: Re: riblett 612 > From: "nightmare" > > > Great info Robert. im building with the 613.5 and making my educated guess on equal > cabane lengths as well. we'll see... > > -------- > Paul Donahue > Started 8-3-12 > do not archive > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=431538#431538 > > > ________________________________ Message 2 _____________________________________ > > > Time: 06:48:35 PM PST US > Subject: Pietenpol-List: Fwd: Nose stand > From: Steven Dortch > > Gentlemen, Here is version 2.0 of my nose cradle. Version 1.0 was just a 8 > inch bench with an old Beech Bonanza seatback and a blanket. > > Putting it on wheels makes it mobile and gives me at least a foot more room > for my other plane. Also this clears my cowling and carb. > > Made from am $8 (with a coupon) Harbor Freight dolly, scrap 2x6, and scrap > plywood. the 2X6 is notched to match the prop shape and padded with one > layer of sleeping pad (the type you camp out with) and a layer of Pipe > insulation, covered with carpet. The hole in the front is so that I can > hang it on the prop while I bungee it in. I bungee the cradle onto the prop > so that when I lower the nose I don't have to aim for the cradle, It is all > one piece. > > When the piet is flying the planes will switch so that I can get the Piet > out without having to move the Beech Bonanza in and out, I intend on flying > the piet a lot more than the Vtail. > > Blue Skies, > Steve D. > > > > > > > > ________________________________ Message 4 _____________________________________ Time: 08:18:36 PM PST US From: "Clif Dawson" Subject: Re: Pietenpol-List: lift struts 2 First off you can't just divide by four. The front strut takes the larger part of the load and the rear less of it. I'm not sure what the ratio is on the Piet airfoil though. Most likely somewhere around a third more. Second, the load on the wing is vertical but the tensile stress on the strut is not. The length of the strut is in the neighbourhood of double the vertical component. So your strut sees double the value of the lift supported by that strut. 600lb lifted puts 1200lb tension on the strut. third, the cabanes carry a portion of the load but not a lot. I figured all this stuff out some time ago and put it in some quite intelligent location. Now that my intelligence has eroded I can't find it!! Clif When I was younger, I could remember anything, whether it happened or not. Mark Twain ----- Original Message ----- From: "Bill R" Sent: Tuesday, October 07, 2014 4:09 PM Subject: Pietenpol-List: lift struts 2 > > ok, lets go down this road a little further. > I am still trying to determine if the aluminum lift struts from Carlson > A/C are adequate for a Pietenpol. I know there are Piets out there flying > with these struts,Dan Helspers being one of them. (thanks Dan for your > previous response and detailed photos). But I am still looking at the > numbers and have come up with a very unscientific conclusion. If I built > in a big fudge factor by using a gross weight of 1320 lbs. and stressed > the airframe to 6 G's. that comes out to 7920 lbs. The small lift struts > from Carlson has a shear load capacity of 11,600 lbs. If the load is then > divided by 4 (4 struts), it would appear that these aluminum struts are > easily capable of of handling the job. > But alas, this is just to simple,I have to be missing something. > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=431626#431626 > > > ----- > No virus found in this message. > Checked by AVG - www.avg.com > ------------------------------------------------------------------------------------- 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.