---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Sat 10/03/15: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 01:39 PM - Center-of-Gravity for Mark 3 (Dee LeBlanc) 2. 02:53 PM - Re: Center-of-Gravity for Mark 3 (Richard Pike) 3. 07:04 PM - Re: Center-of-Gravity for Mark 3 (Larlaeb) ________________________________ Message 1 _____________________________________ Time: 01:39:07 PM PST US From: Dee LeBlanc Subject: Kolb-List: Center-of-Gravity for Mark 3 I just completed the weight-and-balance for my newly rebuilt Mark3 (see attached file). I don=99t have a manual for this plane. Can anyone tell me what the acceptable center-of-gravity range is for a Mk3 (as a distance from the leading edge)? Per my calculations, I=99m getting numbers that show a substantially aft center-of-gravity. I=99 m getting, depending on loading condition COG ranging from 21.94=9D to 29.34=9D. One entry on the matronics website indicate that the range should be from 16.5=9D to 23.1=9D from the leading edge??? Thanks for your help, Dee LeBlanc leblancds@cox.net cell 225-802-1038 ~~~~~~~~~~~~~~~~ The Past is History The Future is a Mystery Today is a Gift That=99s Why They Call it the Present ________________________________ Message 2 _____________________________________ Time: 02:53:34 PM PST US Subject: Kolb-List: Re: Center-of-Gravity for Mark 3 From: "Richard Pike" According to the original manual, the cg is determined as a percentage of the chord, rather than a specific number of inches. http://oh2fly.net/oldpoops/Lexan%20rear%20enclosure.html Go to page 40 on the link, it is on 3 pages total, 40-43. Looking at your figures, I realize that my answer is not exactly what you need, sort of an apples and oranges thing - here is how I did mine using the manual; see attachment. Hope this helps. -------- Richard Pike Kolb MKIII N420P (420ldPoops) Kingsport, TN 3TN0 Would you consider yourself to be a good person? https://www.youtube.com/watch?v=VWcDXT6pH7A Read this topic online here: http://forums.matronics.com/viewtopic.php?p=447622#447622 Attachments: http://forums.matronics.com//files/wt_and_bal_form_medium_726.jpg ________________________________ Message 3 _____________________________________ Time: 07:04:41 PM PST US Subject: Kolb-List: Re: Center-of-Gravity for Mark 3 From: "Larlaeb" The range I use for my MkIII is: Aft CG Limit is 23.1" or 35% of wing chord Forward CG Limit is 16.5" or 25% of wing chord Read this topic online here: http://forums.matronics.com/viewtopic.php?p=447625#447625 ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message kolb-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Kolb-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/kolb-list Browse Digests http://www.matronics.com/digest/kolb-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.