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SoaringRadi C ntr lledDigest August 2013 Vol. 30, No. 8 August 2013 Vol. 30, No. 8 Front cover: Jeremy Hartmann's 1:2.25 scale Musger Mg 19a is towed to altitude at the JR Aerotow 2013. Photos of the construction of this model and its appearance at the JR Aerotow start on page 30 of this issue. Photo by Peter George. Canon EOS 5D Mark II, ISO 200, 1/500 sec., f11.0, 100mm CONTENTS 4 Black Eagle PSS Festival 2013 New Lithium Battery Technologies 51 Kevin Farr covers the annual event, this year sponsored 3-D printing of very small batteries and lithium iron by the Two Oceans Slope Soarers (TOSS) and featuring phosphate replaces lithium cobalt oxide. Links to some spectacular models. descriptive videos included. 21 Seattle Area Soaring Society HLG Clinic Kerry Glide-In 2013 51 Using previous experience as a guide, SASS put on a Chris van Schoor sets up a multi-day event which hugely successful workshop for F3K enthusiasts and attracts international participants, and Stuart "Gromit" casual flyers. Adam Weston, Rick Jay and Michael Wallace relates his personal experiences flying from a Frederick describe how it all came together in a number of beautiful Irish slopes. "how to..." format. 36th League of Silent Flight Tournament 66 30 Musger Mg 19a "Steinadler" Jerilderie, New South Wales Australia, was the site Jeremy Hartmann builds and flies the 1:2.25 scale model of this annual event. Text and photo coverage by from a Schneider-Modell kit. Text by Steve Pasierb of Terry Passalaqua. rcaerotowing.com, with photos by Jeremy Hartmann and Peter George. 30 Tom's Tips Back cover: “Coming in for a landing.” Great Blue Heron Tom Broeski of adesigner.com shows how to wire a photographed by Charlie Morey, Charlie Morey Fine Art transmitter external battery pack and how to make a Photography, charliemorey.com. Lifted feathers prevent the specialized tool to assist with those otherwise hard to air backflow from reaching the wing leading edge. reach clevises. Nikon D800E, ISO 400, 1/1600 sec., f8.0, 380mm 2 R/C Soaring Digest R/C Soaring Digest August 2013 In the Air Volume 30 Number 8 This issue presents a fairly good mix of tool-making, electronics and technology, construction, club activities and event coverage. We hope you enjoy it! Managing Editors, Publishers B2 Kuhlman There are two photographs in this issue which bear your special consideration: Contact [email protected] [email protected] First is the back cover image. We saw this photo on Charlie http://www.rcsoaringdigest.com Morey's FaceBook page a few days ago and were overwhelmingly Yahoo! group: RCSoaringDigest FaceBook: https://www.facebook.com/RCSoaringDigest impressed. Charlie published Slope Soaring News a bit more than two decades back (all issues are archived on the RCSD web site) and is now a professional photographer. His near daily trips to the R/C Soaring Digest (RCSD) is a reader-written monthly publication for the R/C sailplane enthusiast and has been Los Angeles Zoo have garnered a large number of truly exceptional published since January 1984. It is dedicated to sharing photographs. We couldn't resist Charlie's photo of the Great Blue technical and educational information. All material contributed Heron in landing mode as it so clearly illustrates how the upper must be original and not infringe upon the copyrights of others. It is the policy of RCSD to provide accurate information. Please wing surface feathers flex to delay stalling. Beautiful and instructive. let us know of any error that significantly affects the meaning Be sure to check out Charlie's "fine art photography" web site at of a story. Because we encourage new ideas, the content of http://www.charliemorey.com. each article is the opinion of the author and may not necessarily reflect those of RCSD. We encourage anyone who wishes to The other photo deserving your attention is that of Schalk Human's obtain additional information to contact the author. Vulcan 2B, winner of the Black Eagle PSS Festival trophy this year, on page 20. This is such a wonderful photo of a truly fantastic model ——— that we eliminated the usual page designations so the image could Copyright © 2013 R/C Soaring Digest be presented without distractions; it certainly deserves this special Published by B2Streamlines <http://www.b2streamlines.com> portrayal. Our sincere appreciation goes to Shane Swartz for his P.O. Box 975, Olalla WA 98359 All rights reserved great skills with the Nikon D90 camera. ——— We are always searching for ways to improve R/C Soaring Digest and feedback, positive or negative, is always appreciated. We can RC Soaring Digest is published using Adobe InDesign CS6 now be contacted at <[email protected]>. Time to build another sailplane! August 2013 3 Black Eagle PSS Festival2013 Kevin Farr, [email protected] 4 R/C Soaring Digest Enter the D’urbanites and tarmac outside at a favorite Hout Schalk Human, both scratch-built from Bay eatery. You just got to love a Cape plan, with over a year’s work involved It does appear that 2013 will be that Winter. in each case, and a sight for any PSS special year, the one you refer to when builders admiration. The Master Class staring out over the bay, whichever Them be large cannons, Sir! can only be entered by a scratch built bay you happen to be sitting above, Saturday followed the Windfinder entry, be that foam, balsa, fibre glass, wondering when the wind will arrive, and prediction and delivered the most whatever, just as long as it is scratch if it will at all, ever again. beautiful post-frontal Cape Peninsula built. Two Oceans Slope Soarers had morning imaginable. The Navy Cannons As if by cue and the static judging wound earlier this year hosted the supremely up at Red Hill present a truly awe down, the wind rose up, and we were successfully aerobatics event and now inspiring site. These now silent WWII able to fly a scoring round for the combat had a chance to host the 4th Annual large scale sentinels protected Cape class. Black Eagle PSS Festival in similar Town in their day, and now offered us a fashion. viewing platform par excellence for the This round meant taking your foam/ correx/combat build and gliding a two A few weeks beforehand the forecast had day’s static judging. minute expression session. Keeping in set a pattern of South Easters arriving First the combat class were put to the mind that the judge would be looking for over the weekend, which is a trend that sword, with Herbie our static judge scale moves similar to the plane you have tends to stick for a while, but Mother taking mean aim on any indiscretion, modelled, and marking you as such, the Nature kindly kicked the trend to the side while handing out praise where due, for lowly Immelmann, 1/2 reverse Cuban 8, lines and threw in three fantastic days of straight horizontal and vertical stabilizers, rolls and the split “S” all took on a more wind, glorious wind. etc. meaningfully and relevant existence. Dave Greer and Rudi Smook jetted in Next were Sportsman’s Light Class, The Sportsman’s Light also enjoyed a from Durban, as they do, and the Friday and then the heavies in Sportsman’s scoring session with the day-glo Impala practice session was attended by a few Heavy Class, designed to separate the drawing much attention in this unusual of us TOSSers and D’urbanites with hair seriously detailed heavy class from the SAAF colour scheme from the 80’s. on our teeth as a 60 km/h breeze blasted less detailed light class based on wing the fynbos clean at the Chapmans peak loading. So ended an immaculate and most enjoyable day of slope competition. site. This covered a good three hour session A few maidens sans damage were through the differing classes with Herbie The Big Day taken care of, and the morning session maintaining an admirable sense of humor With all the wind channels barking out ended with a fair bit of breeze on the while contestants “attempted to get loud that we might have a wee bit of a mountainside. This was followed by lunch around him” on a constant basis. blow on the Sunday, most gathered early with a great bottle of wine and a mouth The Master Class involved a showdown on the morning of THE BIG DAY. watering trinchado under the knife, between the Super Constellation airliner while watching the rain pelt the trees With a light breeze in the morning, we of Kevin Farr and the Vulcan Bomber of waited for wind as we chatted amongst August 2013 5 Hans van Kamp’s Hawker Hunter takes to the skies. 6 R/C Soaring Digest Christo Le Roux’s Combat Class P-51 Mustang. SAAF colour scheme Spitfire MK XVI. Dave Greer’s Me 109. Christo Le Roux’s P-40 Warhawk. August 2013 7 8 R/C Soaring Digest Rudi Smook’s very unusual Dornier Do 335 “Pfeil.” The original served as a heavy fighter near the end of World War II, had a maximum speed of more than 470 mph, and a service ceiling greater than 35,000". The only surviving example of the aircraft is at the Steven F. Udvar-Hazy Center of the National Air and Space Museum. August 2013 9 Kevin Farr’s Lockheed Constellation Super G was on the cover of the August 2012 issue of RCSD and made its appearance at the Cape Town venue again this year.