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Rcsd-2018-08 SoaringDigestRadio C ntrolled August 2018 Vol. 35, No. 8 August 2018 Vol. 35, No. 8 Front cover: Pierre Ruat's large scale ASH 30 Mi glides overhead. More photos of this model starting on page 85 of this edition. Nikon D7100, ISO 100, 1/1000 sec., f4.0, 200 mm Vintage RC Event 27 CONTENTS Antique and vintage free flight models, both fueled and electric, along with gliders, fly thermal duration tasks with the assistance of radio control. The meet was held 12-13 May 2018 in Litomyšl, Czech Republic. Text and Bruce Abell 5 photos by Martin Pilný. Bruce Abell is remembered by his son Mark. Homage 49 5 FAI Record Claims Jerry Krainock, holder of numerous AMA records and Claims for duration and distance for models using contributor to the San Fernando Silent Flyers Anthology, electric motors and solar cells. shares his homage to the greats of free flight. 6 50th Anniversary 50 years ago Andrew J. Smith became the last gliding The need for speed 54 world champion flying a wooden glider, the beautiful Kevin "Rowdy" Botherway and five others, including Joe Neukom Elfe S3! Philip Kolb. Wurts, compete in a relatively laid back weekend F3b speed practice session. 7 2018 Horizon Hobby Aerotow Text and photo coverage of this annual event by Traveling with and charging our radio gear 56 Stéphane Ruelle. Domestic and international traveling equipment recommended by Kevin "Rowdy" Botherway. Cloud background courtesy of Curtis Suter. 2 R/C Soaring Digest 58 ZunZun Landing on! (Not landing out!) 71 A parametric pod design for RC-DLGs Chris Williams relates his adventures with E-Assist Joaquin A. Rodriguez Huerta of the Montreal Thermal soaring on the slope. Featuring a number of Chris' Soarers details his computerized model for creating beautiful RC sailplane photos. pods with variable dimensions. Pierre Ruat's ASH 30 Mi 85 60 Flutter III - Controlling flutter An incredibly beautiful model depicted in six absolutely An examination of the various methods for inhibiting stunning photos. (Specifications provided.) control surface flutter. By Chuck Anderson. PSS candidate 67 Rich Henderson's Mitsubishi A-6 Zero Myasishev M-17 Stratosphere 91 Photo by Phil Cooke. The background for Dr. Paul Clark's model featured in 68 John Copeland's Stemme 10 Model Builder magazine, September 1992. A large scale Stemme 10 with operating retractable Aerotow candidate propeller. Photos from John Copeland's FaceBook page. Jim Maupin's Carbon Dragon 45 This ultralight sailplane with full span flaperons and a unique spoiler system is begging to be modeled in large scale. Suggested by Kyle Kroker. Back cover: Having used the last of the lift, it’s time for the E-Assist Bergfalke to come home. Photo by Chris Williams. Canon EOS 7D, ISO 160, 1/1600 sec., f5.0, 176 mm August 2018 3 R/C Soaring Digest The journal for RC soaring enthusiasts August 2018 In the Air Volume 35 Number 8 This August 2018 edition of RC Soaring Digest is in our opinion one Managing Editors, Publishers Bill & Bunny (B2) Kuhlman of the more exciting editions we can remember having published. Not Contact [email protected] only is it twice the size of the previous issue, it explores an RC soaring http://www.rcsoaringdigest.com discipline not previously covered in the annals of RCSD — thermal Yahoo! group: RCSoaringDigest duration soaring with vintage free flight airframes. Our sincere thanks FaceBook: https://www.facebook.com/RCSoaringDigest/ to Martin Pilný ("Vintage RC Event," pages 27-48) and Jerry Krainock ("Homage," pages 49-53) for their submissions which expand the R/C Soaring Digest (RCSD) is a reader-written monthly publication boundaries of RC soaring! for the R/C sailplane enthusiast and has been published since January 1984. It is dedicated to sharing technical and educational For several years we've been intrigued by Dr. Paul Clark's Myasishchev information. All material contributed must be original and not M-17 Stratosphere and we've finally gathered sufficient information for infringe upon the copyrights of others. It is the policy of RCSD to provide accurate information. Please let us know of any error a meaningful presentation. Thanks go to Paul for providing the archived that significantly affects the meaning of a story. Because we Model Builder and KOKU-FAN materials. The M-17 is featured as a PSS encourage new ideas, the content of each article is the opinion candidate on pages 91-96. of the author and may not necessarily reflect those ofRCSD . We encourage anyone who wishes to obtain additional information A recent e-mail from Kyle Kroker asking for assistance with a scale to contact the author. aerotow subject, the Jim Maupin Carbon Dragon ultralight sailplane, had us immediately involved in research and we couldn't help but ——— including on pages 97-103 just a fraction of the material we found over Copyright © 2018 R/C Soaring Digest several days time. Kyle's goal is to build his model to 1:3 scale and 2 Published by B Streamlines he remains concerned about servo choice. With full span flaperons http://www.b2streamlines.com P.O. Box 975, Olalla WA 98359 and a uniquely shaped spoiler, he's finding it difficult to determine the All rights reserved torque required to deflect those surfaces. Kyle's aware of the various "spreadsheet" apps available on the internet for determining servo ——— requirements but is experiencing difficulties inputting appropriate RC Soaring Digest is published using Adobe InDesign CS6 numbers. Any assistance RCSD readers can provide will be welcomed. Our sincere thanks to everyone who submitted materials for this edition! It's been a joy to put together! Time to build another sailplane! 4 R/C Soaring Digest FAI Record Claims FAI has received the following Class F (Model Aircraft) World record claims: ========================================= Claim number : 18636 Sub-class : F5 Open / Radio Control Flight Category : Aeroplane Group : Electrical Motor Solar Cells Type of record : Duration: F185 Course/location : Masserac (France) Performance : 10 h 23 min Team of France Date : 10.07.2018 Current record : no record set yet ========================================= and ========================================= It is with great sadness that I have to announce Claim number : 18637 that my father - Bruce Abell - has passed away. Sub-class : F5 Open / Radio Control Flight He lived a long and full life and was 89 on his Category : Aeroplane passing. Group : Electrical Motor Solar Cells Those who knew him will know of his many Type of record : Distance in a closed circuit: F190 and varied interests, a passion for aircraft and Course/location : Masserac (France) aviation, a love of native plants, and his fondness Performance : 261,00 km (162.18 miles) for a good yarn. Team of France Date : 10.07.2018 He will be greatly missed. Current record : no record set yet A memorial service was held on Tuesday, 3rd ========================================= July, at 11:30am at St Patricks in Nulkaba, near The details shown above are provisional. When all the Cessnock. evidence required has been received and checked, the Remembering a great man. exact figures will be established and the record ratified (if appropriate). - Mark Abell August 2018 5 Anniversary50th 50 years ago Andrew J. Smith became the last gliding world champion flying a wooden glider, the beautiful Neukom Elfe S3! - Philip Kolb Sebastien Frossard’s Neukom Elfe S3P/HB-841. From SOARING, October 1968, pp. 10-25 that helped A. J. reclaim his lead. But more important, Smith had come “A. J. Smith, architect and now a world champion, assembled through when it counted.” a winning formula that re-established the United States in the winner’s column, a feat not achieved since Dr. Paul B. PILOT SAILPLANE COUNTRY POINTS McCready’s win at St. Yan, France, in 1956. 1. Andrew Smith Elfe S-3 U.S.A. 5595 “A. J. Smith flew his Sisu to 14th place (in the open class) in the 2. Per Axel Persson Libelle Sweden 5459 ’65 Internationals at South Cerney. At Marfa in 1967 Smith was 3. Rudolph Lindner Phoebus A West Germany 5444 cool, intense, and determined, claiming his second national 4. George Moffat, Jr. Elfe S-3 U.S.A. 5437 championship (the first at Wichita, Kansas, 1961, flying an 5. Henri Stouffs Libelle Belgium 5382 LO-150). At Leszno he seemed to be still climbing the peak - 6. Urs Bloch Elfe S-3 Switzerland 5369 a rather solitary figure, his casual sauntering gait belying his 7. Giovanni Perotti Phoebus A Italy 5259 intense, volatile nature. 8. Edward Makula Foka 5 Poland 5186 9. Hans Nietlispach Phoebus A Switzerland 5156 “Smith built his win on a series of fairly consistent flights. He 10. Hans W. Grosse AS-W 15 West Germany 4879 never claimed a first or 1000-point day (in Poland there was a difference). Henri Stouff’s incredible spiral out of first place, with a 44th place finish on the last task, provided the bit of luck 6 R/C Soaring Digest 2018 Horizon Hobby Aerotow Wednesday, June 13, 2018 - Sunday, June 17, 2018 Stéphane Ruelle, [email protected] August 2018 7 As every year since I moved to the USA I made this June pilgrimage to Monticello Illinois to be part of the biggest aerotow in the country. The site, the Piatt County Airport, is perfect to host that event with a full-size runaway surrounded by bean and corn fields, no trees, and a full-size hangar for storing the sailplanes and tugs in the evening. The event has moved through the year from a four day format to a full week of camaraderie, officially starting on Wednesday, most people arrived on Tuesday night and the Wednesday flight line was already quite full with about 30 entries.
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