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05 / 2020 BRINGING MODELERS TOGETHER $6.95US $7.95CAN PAGE 41 / Horizon Hobby E-flite Carbon-Z Cub SS GIANT SCALE ON A BUDGET MAY 2020 / VOL. 46 / NO. 05 46 / NO. VOL. 2020 / MAY PAGE 18 / RM-1 SUPERSONIC FIGHTER PAGE 26 / BRUSHLESS MOTOR DESIGN PAGE 33 / RIGGING A BIPLANE PAGE 36 / BUILD A FREE FLIGHT MODEL ModelAviation.com PAGE 45 / ARROWS RC HUSKY When flying a fast EDF jet, you face enough challenges without wondering how your battery and power system are holding up. Spektrum ™ Smart Technology keeps you better connected to your jet than ever before—without extra modules, wires, or complicated programming. Using a Smart Avian™ ESC, Smart LiPo battery, and Smart- compatible transmitter and receiver, you always have critical, real-time telemetry data right at your fingertips. Automatic warnings help you stay ahead of problems, a huge plus when you’re moving at jet speeds. Smart Technology makes electric flight smarter, safer, and simpler. 45 FEATURES REVIEWS 18 33 41 45 RM-1 Supersonic Rigging a Biplane Horizon Hobby E-flite Arrows RC Husky Fighter Making flying and landing Carbon-Z Cub SS 2.1m 1800mm PNP Build a Soviet X-Plane wires BNF Basic With AS3X Ready for less-than-perfect By Larry Kruse By Lawrence Klingberg and SAFE Select runways Giant Scale on a budget By Jon Barnes 26 36 By Jay Smith Brushless Motor Build a Free Flight Design Model A conversation with Rainer Learn the techniques to build Hacker a Keil Kraft Ajax kit By James Wang By Bob Benjamin DIGITAL CONTENT ICONS Video Additional Photos Social Media/Conversation Podcast Downloadable Content/Plans Additional Content 2 | MAY 2020 ModelAviation.com MAY 2020 / VOL. 46 / NO. 05 12 COLUMNS 04 President’s Perspective 98 Control Line Scale By Rich Hanson By Fred Cronenwett 06 The Inside Loop 102 Indoor Free Flight By Jay Smith By Don Slusarczyk 07 Click On 106 Donations 08 AMA In Action 129 MA Marketplace 12 Product Spotlight 130 Index of Advertisers 14 In the Air 131 Viewfinder 50 Focal Point 132 I Am the AMA By Jay Smith 56 Vintage Viewpoint By Bob Noll 60 Micro-Flying By Joe Malinchak AMA NEWS 64 Safety Comes First By Dave Gee 68 Born to Fly 107 AMA Foundation 18 By Jim T. Graham By Dan Bott 72 Advanced Flight 108 District News Technologies By Patrick Sherman 119 Education Through 76 Around the Patch Aviation By Kyle Jaracz By Thayer Syme 80 RC Scale 120 AMA Enrollment Form/ By Stan Alexander AMA Safety Code 84 RC Soaring 122 Sanctioned Event By Gordon Buckland Calendar 88 RC Jets By Jim Hiller 92 RC Pylon By Tim Lampe 26 96 RC Combat By William Drumm III 05 / 2020 BRINGING MODELERS TOGETHER $6.95US $7.95CAN ON THE COVER BECOME A MEMBER! PAGE 41 / Horizon Hobby E-flite The new E-flite Carbon-Z Cub SS has incorporated many changes from the original, Join the Academy of Model Aeronautics for Carbon-Z Cub SS GIANT SCALE ON A BUDGET MAY 2020 / VOL. 46 / NO. 05 46 / NO. VOL. 2020 / MAY beyond the obvious change of color from blue to orange, which allows this Giant Scale access to bonus content including how-to model to stand out in the air. videos, interviews, event coverage, and free downloads! Learn more at www. PAGE 18 / Learn more starting on page 41. RM-1 SUPERSONIC FIGHTER PAGE 26 / BRUSHLESS MOTOR DESIGN PAGE 33 / RIGGING A BIPLANE PAGE 36 / PHOTO BY RACHELLE HAUGHN. ModelAviation.com. BUILD A FREE FLIGHT MODEL ModelAviation.com PAGE 45 / ARROWS RC HUSKY ModelAviation.com MAY 2020 | 3 PRESIDENT’S PERSPECTIVE while others report only a handful of cases. It’s import- ant to follow local restrictions and directives. AMA clubs and members need to consider their individual circumstances when participating in model aviation activities. The following suggestions are offered to protect yourself and others while allowing everyone to continue to enjoy the hobby: Hygiene • Clubs should endeavor to provide hand-cleaning materials at club facilities or members should supply their own. • Clubs should sanitize club facilities such as restrooms, kitchens, dining, and seating areas. • All members should adopt good hygiene practices and social distancing when interacting with others. • Members should not use communal cups or shared COVID-19 IMPACTS kitchenware. Bring your own or use packaged, disposable utensils. • Members should frequently wash their hands in warm water for a minimum of 20 seconds, use paper MODEL AVIATION products to avoid directly touching doors, club locks, refrigerators, etc., and avoid touching their By Rich Hanson, AMA President | [email protected] mouthes and faces. • Avoid personal contact such as shaking hands. A congenial wave, eye contact, and a friendly hello THE OUTBREAK OF the COVID-19 virus has had a dramatic effect on make for a great greeting. our nation and our society. To a lesser extent, it has impacted the aeromod- • Clubs should consider suspending communal meals eling community. By the time you read this, we’ll hopefully be on the back such as snacks, barbecues, and potlucks, and side of the viral proliferation encourage members to bring their own food. curve; however, as of today • If supplying food, clubs should ensure that we’re still anticipating a food preparation complies with local health peak in the spread of the All clubs should standards and is served using gloves, virus and new guidelines, aprons, and hairnets to prevent restrictions, and precautions consider contamination. are put in place daily. It’s • Avoid sneezing or coughing over food or in important that we follow the putting in place the presence of others, and use a tissue or Centers for Disease Control your sleeve to capture escaping droplets. and Prevention (CDC) guide- • If you have any COVID-19 symptoms (fever, lines and adhere to local temporary rules cough, sore throat, fatigue or difficulty health authority and govern- breathing), self-isolate and don’t participate ment directives. necessary to in club activities until you’re clear of symp- This is not to say that we toms. If diagnosed with the COVID-19 virus, can’t continue to participate protect their wait to go out in public until you’re cleared in the hobby and enjoy our by competent medical personnel. aeromodeling activities, but members and the we need to consider our Club Events fellow hobbyists and club AMA has recently issued the following members and be attentive in general public. policy regarding aeromodeling events affected practicing safe hygiene and by the COVID-19 outbreak: preventative measures. The average age of our members falls within the vulnerable age category, making it imperative that we be vigilant in adhering “Because of the administrative and insurance costs to the current guidelines and restrictions. associated with issuing a sanction for an event, AMA The impact of the COVID-19 virus varies significantly across the country. policy does not offer refunds or credits for canceled Some areas have been severely impacted with thousands of infections, or rescheduled events. Given the evolving situation 4 | MAY 2020 ModelAviation.com with COVID-19 and guidance from the CDC, AMA will the event to include updating the online event listing at www.modelaircraft. be temporarily amending this policy for events sched- org/events. Because of deadlines with Model Aviation magazine, we cannot uled through May 31, 2020. If a CD [contest director] guarantee rescheduled events will be reflected immediately in the magazine. or EM [event manager] cancels an event, AMA will To reschedule your event taking place between now and May 31, 2020, at allow sanctions, events ads purchased through the no charge, please email [email protected] or call (765) 287-1256, sanctioning portal, and insurance certificates to be ext. 252, and provide the name of the CD or EM, event details, and new date rescheduled at no additional charge. Events must be change.” rescheduled during the 2020 calendar year. “We will make every effort to promptly reschedule Clubs should consider postponing large events and postpone or cancel events that involve attendance by members from other clubs or the public occurring during the COVID-19 pandemic. These suggestions are not exhaustive, and clubs should consider implementing other preventative measures as appropriate. All individual clubs face unique conditions within their respective communities. As such, they should make their own rules and policies based on their local circumstances; however, all clubs should consider putting in place temporary rules necessary to protect their members and the general public. Safety is our primary focus. Whether it is rules regarding the operation of our model aircraft or the procedures relating to hosting events and meetings, our responsibility is to our community and the general public. In the grand scheme of things, the saga of COVID-19 virus will be relatively short-lived and we’ll soon be back to enjoying this great hobby Visit www.modelaircraft.org/ that we all love. covid-19 for the latest updates. ModelAviation.com MAY 2020 | 5 THE INSIDE LOOP President Rich Hanson Executive Vice President Randy Cameron Executive Director Chad Budreau STAFF: Director of Communications Rob Kurek EDITORIAL Executive Editor Jay Smith Managing Editor Elizabeth Helms Associate Editor Jennifer Alderman Staff Writer/Copy Editor Rachelle Haughn ART/DESIGN Art Director Lynn Balderrama MULTIMEDIA Digital Experience Lead FAA RECEIVED Dillon Carpenter Technical Communications Lead Matt Ruddick MORE THAN 50,000 CONTRIBUTING EDITORS: Stan Alexander, Bob Angel, Gordon Buckland, Sal Calvagna, Fred Cronenwett, Joe Daly, Don DeLoach, William Drumm III, Dave Gee, Greg Gimlick, John Glezellis, Jim T. Graham, Jim Hiller, Louis Joyner, COMMENTS Tim Lampe, Joe Malinchak, Bob Noll, Dennis Norman, Jennifer L. Reynolds, Mark Rudner, Patrick Jay Smith, Executive Editor | [email protected] Sherman, Don Slusarczyk, Thayer Syme, Pat Tritle, John Vlna, Peter Vogel Academy of Model Aeronautics 5161 E.