---------------------------------------------------------- Kolb-List Digest Archive --- Total Messages Posted Sat 09/29/12: 3 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 02:10 AM - Re: Kolb-List Digest: 10 Msgs - 09/27/12 (George Bearden) 2. 03:57 PM - Re: glide ratio (wakataka) 3. 04:17 PM - Re: glide ratio (Thom Riddle) ________________________________ Message 1 _____________________________________ Time: 02:10:13 AM PST US From: "George Bearden" Subject: Kolb-List: RE: Kolb-List Digest: 10 Msgs - 09/27/12 > That`s the ratio I got, when I did the math. (96/1) Based on my 2-stroke motorcycle experience of years ago, this sounds right to me. I found that properly working oil injection saved a tremendous amount of oil. It went so much farther that it became almost a non-issue. GeoB ________________________________ Message 2 _____________________________________ Time: 03:57:01 PM PST US Subject: Kolb-List: Re: glide ratio From: "wakataka" I measured the glide ratio of my original Firestar at this morning by shutting down the engine at 400 feet agl on final and measuring the distance to touchdown on Google Earth. I traveled 2500 feet with a 400 feet drop. It's just slightly better than 6 to1. Airspeed was about 40 mph, which is seems to be close to best L/D from what I can tell. The airplane was near max gross weight (550#). It has a center section cover and streamlined lift stuts, which helps improve the glide somewhat. Still, I wouldn't recommend a Kolb for a soaring contest. -------- There is something fascinating about science. One gets such wholesale returns of conjecture out of such a trifling investment of fact. Mark Twain Read this topic online here: http://forums.matronics.com/viewtopic.php?p=384263#384263 ________________________________ Message 3 _____________________________________ Time: 04:17:40 PM PST US Subject: Kolb-List: Re: glide ratio From: "Thom Riddle" Waktaka, Curious about your technique, so I have a couple questions and comments. Did you stop the engine when you were flying at 40 mph or at a higher speed? If it was at a higher speed then your glide ratio was actually less than what you calculated because reducing the airspeed to 40 from whatever faster speed reduced your sink rate during that speed reduction. Also, once in ground effect, the glide ratio improves. This is why to get more accurate numbers one should start the engine off glide at the presumed best glide speed and time the loss of altitude while well above ground effect. Just my 2 cents. -------- Thom Riddle Buffalo, NY (9G0) Kolb Slingshot SS-021 Jabiru 2200A #1574 Diamond Katana DA20-A1 Rotax 912 F3 Don't worry about old age... it doesn't last very long. - Anonymous Read this topic online here: http://forums.matronics.com/viewtopic.php?p=384268#384268 ------------------------------------------------------------------------------------- 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.