---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Tue 09/23/14: 8 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 05:19 AM - Re: Re: Lift struts (Jack Phillips) 2. 09:09 AM - Short video during cross country flight. (tools) 3. 12:11 PM - Corvair bellhousing question (Pocono John) 4. 01:21 PM - Re: Short video during cross country flight. (Boatright, Jeffrey) 5. 01:23 PM - Re: Corvair bellhousing question (bdewenter) 6. 02:12 PM - Re: Re: Lift struts (George Abernathy) 7. 02:16 PM - Re: Short video during cross country flight. (tools) 8. 02:25 PM - Re: Short video during cross country flight. (taildrags) ________________________________ Message 1 _____________________________________ Time: 05:19:18 AM PST US From: "Jack Phillips" Subject: RE: Pietenpol-List: Re: Lift struts Simple solution - make the fitting a little bit longer so there is room to get the bolt in from the top. In general, all of the fittings could stand to be a bit longer to allow easy access for the hardware. Mike Cuy pointed this out on his video many years ago. This is a common design mistake. I remember many years ago when I was working on my first job out of college. My job was to design a piece that was to be removable from an airplane, attached by three bolts. I proudly showed my drawings to the chief engineer who looked at it and said "The mechanics are going to hate you. You left them enough room to get one click of a ratchet on each throw. It'll take them 15 minutes of wiggling a ratchet to get that pylon off. Go back and redesign it so they can get at least a 90 degree throw on their wrench." It is VERY important to make sure the bolts go in with head up or forward. That way, if a cotter pin breaks (or is forgotten) and the nut vibrates loose, the bolt will be held in place by gravity, hopefully long enough that someone will notice it and fix it. Jack Phillips NX899JP Smith Mountain Lake, Virginia -----Original Message----- From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of taildrags Sent: Tuesday, September 23, 2014 12:16 AM Subject: Pietenpol-List: Re: Lift struts Dan; I realize that your photos are from when you were in the fit-up stage, but the lift strut 2 image illustrates a very good example of some of the places where a built-to-plans Piet makes it difficult to install hardware the way all of the "best practices" books (Bingelis included, Mikee!) say to do it... bolt heads up or forward. Where the lift strut lower fork attaches to that tab, if you use the proper length AN bolt you can't get it into the fitting... the fuselage side fabric is just too close and you have to install the bolt with the head down or else try a shorter bolt with a shallow "shear nut" or castellated nut and see if you get enough grip length. This is only one of several places where the same condition can occur. There is also a place where the top end of the strut X-brace cable requires a clevis pin to secure it to the fitting, but the end of the strut is too close to the attach point for the cable attach fitting and the pin has to go in with its head down. On the first annual that my plane had (the A&P was not very familiar with experimentals), he flagged those and a number of other spots where the "head up or forward" rule was not followed. I wanted to have him demonstrate how he would install that hardware, but refrained since he didn't ground the airplane because of those. -------- Oscar Zuniga Medford, OR Air Camper NX41CC "Scout" A75 power Read this topic online here: http://forums.matronics.com/viewtopic.php?p=430955#430955 ________________________________ Message 2 _____________________________________ Time: 09:09:21 AM PST US Subject: Pietenpol-List: Short video during cross country flight. From: "tools" Hope this works. http://youtu.be/Iuig0v36mg0 Read this topic online here: http://forums.matronics.com/viewtopic.php?p=430970#430970 ________________________________ Message 3 _____________________________________ Time: 12:11:37 PM PST US Subject: Pietenpol-List: Corvair bellhousing question From: "Pocono John" I don't know how to take this out. There appears to be some sort of lock ring. -------- John Read this topic online here: http://forums.matronics.com/viewtopic.php?p=430982#430982 Attachments: http://forums.matronics.com//files/bellhousing1_196.jpg http://forums.matronics.com//files/bellhousing2_208.jpg ________________________________ Message 4 _____________________________________ Time: 01:21:09 PM PST US From: "Boatright, Jeffrey" Subject: Re: Pietenpol-List: Short video during cross country flight. 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It has instructions for joining the email list. http://www.corvaircraft.org/ You can also search the entire historical database of the list here http://tugantek.com/archmailv2-cvr//index.jsp -------- Bob 'Early Builder' Dewenter Dayton OH Read this topic online here: http://forums.matronics.com/viewtopic.php?p=430990#430990 ________________________________ Message 6 _____________________________________ Time: 02:12:16 PM PST US From: George Abernathy Subject: Re: Pietenpol-List: Re: Lift struts Amen, How many times did I struggle to remove and replace some part. G ________________________________ From: Jack Phillips Sent: Tuesday, September 23, 2014 5:18 AM Subject: RE: Pietenpol-List: Re: Lift struts Simple solution - make the fitting a little bit longer so there is room to get the bolt in from the top. In general, all of the fittings could stand to be a bit longer to allow easy access for the hardware. Mike Cuy pointed this out on his video many years ago. This is a common design mistake. I remember many years ago when I was working on my first job out of college. My job was to design a piece that was to be removable from an airplane, attached by three bolts. I proudly showed my drawings to the chief engineer who looked at it and said "The mechanics are going to hate you. You left them enough room to get one click of a ratchet on each throw. It'll take them 15 minutes of wiggling a ratchet to get that pylon off. Go back and redesign it so they can get at least a 90 degree throw on their wrench." It is VERY important to make sure the bolts go in with head up or forward. That way, if a cotter pin breaks (or is forgotten) and the nut vibrates loose, the bolt will be held in place by gravity, hopefully long enough that someone will notice it and fix it. Jack Phillips NX899JP Smith Mountain Lake, Virginia -----Original Message----- From: owner-pietenpol-list-server@matronics.com [mailto:owner-pietenpol-list-server@matronics.com] On Behalf Of taildrags Sent: Tuesday, September 23, 2014 12:16 AM Subject: Pietenpol-List: Re: Lift struts Dan; I realize that your photos are from when you were in the fit-up stage, but the lift strut 2 image illustrates a very good example of some of the places where a built-to-plans Piet makes it difficult to install hardware the way all of the "best practices" books (Bingelis included, Mikee!) say to do it... bolt heads up or forward. Where the lift strut lower fork attaches to that tab, if you use the proper length AN bolt you can't get it into the fitting... the fuselage side fabric is just too close and you have to install the bolt with the head down or else try a shorter bolt with a shallow "shear nut" or castellated nut and see if you get enough grip length. This is only one of several places where the same condition can occur. There is also a place where the top end of the strut X-brace cable requires a clevis pin to secure it to the fitting, but the end of the strut is too close to the attach point for the cable attach fitting and the pin has to go in with its head down. On the first annual that my plane had (the A&P was not very familiar with experimentals), he flagged those and a number of other spots where the "head up or forward" rule was not followed. I wanted to have him demonstrate how he would install that hardware, but refrained since he didn't ground the airplane because of those. -------- Oscar Zuniga Medford, OR Air Camper NX41CC "Scout" A75 power Read this topic online here: http://forums.matronics.com/viewtopic.php?p=430955#430955 ________________________________ Message 7 _____________________________________ Time: 02:16:58 PM PST US Subject: Pietenpol-List: Re: Short video during cross country flight. From: "tools" That was the 18th just south of Rantoul. Was a little alarming at first but you could see directly down through it so I classified it as a thin broken layer which is not a ceiling. From a low angle, just really cool looking. Also, as it got more and more dense, you could see the edge where it just suddenly went away. All told, wasn't more than seven or eight miles. Just an isolated thin scattered to broken layer at three or four hundred feet. Probably the remnants of some heavy ground fog from a little earlier in the morning. We were there around nine thirty I imagine. Eas a brisk fifty degrees! Rantoul was a nice overnight. Quick after hours service, hangar at thirty bucks and a courtesy car. If it looked like it was gonna be bad, had just enough sunlight to head on down to Frasca. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=430994#430994 ________________________________ Message 8 _____________________________________ Time: 02:25:26 PM PST US Subject: Pietenpol-List: Re: Short video during cross country flight. From: "taildrags" VFR over-the-top. It's legal. -------- Oscar Zuniga Medford, OR Air Camper NX41CC "Scout" A75 power Read this topic online here: http://forums.matronics.com/viewtopic.php?p=430996#430996 ------------------------------------------------------------------------------------- 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.