---------------------------------------------------------- Pietenpol-List Digest Archive --- Total Messages Posted Tue 01/17/17: 4 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 07:36 AM - Vertical Offset w/Corvair (Harvey Plummer) 2. 08:10 AM - Re: Vertical Offset w/Corvair (Rick Schreiber) 3. 09:37 AM - Re: Vertical Offset w/Corvair (Harvey Plummer) 4. 07:59 PM - Re: Vertical Offset w/Corvair (taildrags) ________________________________ Message 1 _____________________________________ Time: 07:36:22 AM PST US Subject: Pietenpol-List: Vertical Offset w/Corvair From: "Harvey Plummer" Did you guys with a corvair engine offset the front of your vertical stabilizer 1/2" - 3/4" to the left like I have seen those with A65 or O200 engine did? Rick Schreiber did you offset yours? Results? Thanks. -------- Harv, 485PB Read this topic online here: http://forums.matronics.com/viewtopic.php?p=465160#465160 ________________________________ Message 2 _____________________________________ Time: 08:10:04 AM PST US Subject: Pietenpol-List: Re: Vertical Offset w/Corvair From: "Rick Schreiber" Harv, No I didn't offset mine, consequently I always have to input a little left rudder in cruise. My plan is to take core of the offset this winter. Rick Schreiber NX478RS Porter Co Regional, Valparaiso IN Read this topic online here: http://forums.matronics.com/viewtopic.php?p=465161#465161 ________________________________ Message 3 _____________________________________ Time: 09:37:32 AM PST US Subject: Pietenpol-List: Re: Vertical Offset w/Corvair From: "Harvey Plummer" So Rick, does the front of the vertical stabilizer need to be offset to the left or the right with the Corvair engine? -------- Harv, 485PB Read this topic online here: http://forums.matronics.com/viewtopic.php?p=465167#465167 ________________________________ Message 4 _____________________________________ Time: 07:59:15 PM PST US Subject: Pietenpol-List: Re: Vertical Offset w/Corvair From: "taildrags" So let's think about this. We're above Rick's airplane looking down on it as he's flying. The nose wants to pull to the right, so Rick is applying left rudder to keep the airplane going straight. As he presses left rudder, the cable on that side pulls the port side rudder horn and the rudder deflects to port, which causes the tail to swing to starboard and bring the nose straight. Looking down on the airplane, it rotates counter-clockwise to bring the nose straight. So what do we have to do to the leading edge of the vertical stabilizer to get that same counter-clockwise rotation? We offset it to starboard so that more of the port side is presented to the relative wind, 'pressing' the tail to starboard. The LE of the vertical stabilizer on my airplane, which has a Continental engine that rotates in the opposite direction from the Corvair, is offset 1/2" to the port side but still needs a small rudder trim tab. I think 3/4" offset would have been better, but I worried about twisting the vertical stabilizer beam too much by doing that. There is a picture of the offset on my LE here: http://forums.matronics.com//files/img_1848_571.jpg -------- Oscar Zuniga Medford, OR Air Camper NX41CC "Scout" A75 power, 72x36 Culver prop Read this topic online here: http://forums.matronics.com/viewtopic.php?p=465177#465177 ------------------------------------------------------------------------------------- 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.