Clipped Wing Cub Building a Cub to Your Style
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The Spirit of Homebuilt Aviation I www.eaa.org NOVEMBER 2012 Mike Finney’s Cub A Plans-Built Champion » Reno’s Racers How do they go so fast? » Serial Homebuilder Keith Kreth’s Three Rvs Homebuilder’s Corner How Many Staffers Does It Take? Building EAA’s CH 750 By Chad Jensen In an effort to answer that question as it relates to building asked when a project is getting started. On my own an airplane, I decided many months ago the EAA staff projects, I don’t set hard goals. But because this is a needed to build another airplane. Actually, that question group project, and with a strong effort to keep our never really came up, but I did wonder how many staffers staff interested, the goal is Memorial Day weekend I could get interested in building, especially those who 2013. That’s ambitious for sure, but with the talent have never done something like this before. Building an being developed early in the build, I am confident airplane at EAA by staff is not a new idea. It has been done we’ll succeed. in the past successfully, most recently two years ago with the completion of a Sonex, but that was a private staff When the airplane is done, it will be added the EAA endeavor with private owners at the end. This time around, Employee Flying Club as a light-sport qualified trainer we are building a Zenith CH 750 STOL airplane under and all-around fun flying airplane for us all to enjoy. experimental light-sport aircraft rules that will belong to Check out www.Zenith750Project.com for all the details EAA in the end. as they develop. I will be “blogging the build” using that website. See you there! So how many people signed up? Almost 40 EAA staffers have signed up to help; as of this writing, we are only a few weeks into the build, and more than half of them have already come by to cleco, drill, deburr, and rivet parts together. The kit industry is prospering, and the prepunched, match-drilled hole kits are on top of the heap. The Zenith 750 kit is touted as having a 400-hour build time. I know we won’t get close to that number, but it is still going to be a very fast build compared to many others available today. So when will it be done? That’s the age-old question that everyone is On the cover: Mike Finney peeks out from underneath the wing of his award-winning Clipped Wing Wag-Aero Cub. Photo by Russ Munson. 2 NO. 3/NOVEMBER 2012 Contents NO. 3/NOVEMBER 2012 I A publication of the Experimental Aircraft Association Features » 14 Mike Finney’s Clipped Wing Cub » 20 Reno’s Racers Building a Cub to your style Like the rest of us, only faster By Budd Davisson By Tim Kern Departments Columns » » 2 Homebuilder’s Corner 37 Safety Wire By Chad Jensen Transitioning to Experimental or » Unfamiliar Airplanes, Part 3 4 E-Mail By Hobie Tomlinson Letters and links from readers » 6 News from EAA HQ » 42 Under the Cowl News from EAA Baffl ing, Part 2 » 10 Flightline By Tim Kern Industry News » 30 What Our Members Are Building Keith Kreth Builds a Flight of RVs » 46 Light Plane World By Larry Martin Midwest LSA Expo and Epic Flights » 36 Hints for Homebuilders By Dan Grunloh Nicropress Tools By Cy Galley » 50 Flight Test Techniques Airspeed Calibration Deck: Ground course preparation By Ed Kolano EAA EXPERIMENTER 3 E-Mail More Reader Reactions PUBLICATIONS STAFF to the Digital Experimenter Founder: Paul H. Poberezny Publisher: Jack Pelton, EAA I am not a technological kind of guy and refuse to have e-books of any kind. But I fi nd Chairman of the Board this e-magazine is actually great. Easy to use. Vice President of Publications: William Jesse J. Mac McClellan EAA 363185 Homebuilding Community Manager: Chad Jensen Now here is a magazine that I intend to go back and read most of every article. Even Editor: Mary Jones/EditEtc. LLC some that are not in my primary area of interest look interesting. Nice range of topics, Graphic Designer: Chris Livieri good balance between just fun reads, and good-to-know homebuilding information. News Editor: Ric Reynolds Copy Editor: Colleen Walsh Bob Marshall Santa Maria, California Multimedia Journalist: Brady Lane Visual Properties Administrator: Just fi nished the “new” Experimenter and must congratulate all associated with this Jason Toney enterprise. It is GGGRRREEEAAATTT!!!!!! Contributing Writers: Budd Davisson, Cy Galley, Dan Grunloh, Tim Kern, Ed Will be looking forward to subsequent editions/volumes. Kolano, Larry Martin, Hobie Tomlinson European Correspondent: Marino Boric Doug Brownlee EAA 28103 Nice to have another magazine without the paper trail. I loved learning about the 1/3-scale B-17. Can’t wait (but will wait) to see and hear it fl y. Great on transition ADVERTISING training. It’s hard to come by for some aircraft, but [this article] represents a pressing need to improve our safety stats. Display Sue Anderson Joe Truncale Jonathan Berger EAA 572767 Jeff Kaufman I had to write to express my delight with the latest issue of Experimenter. I read the entire issue cover to cover, and you knocked it out of the park. I had suggestions to Mailing Address: make for further issues, but on refl ection the best suggestion I can make is to review P.O. Box 3086, Oshkosh, WI 54903-3086 some of the printed Experimenter issues up to the time of the name change to Sport Phone: 920-426-4800 Pilot (& Light-Sport Aircraft), which I still covet. I would really like to read about the Fax: 920-426-4828 Bodacious ultralight. I saw a YouTube video about it which was interesting. E-mail: [email protected] Thanks again for publishing a great issue! Website: www.EAA.org John Jennings Brookfi eld, Illinois Need to change your address or have other membership The latest issue of Experimenter is awesome! I take back my previous critique that it questions, call 800-564-6322 looked like Kitplanes. This issue looked unique and has its own fl avor. (800-JOIN EAA). I love the fact that EAA has an online magazine dedicated to its core effort—custom- ® ® built aircraft. EAA and SPORT AVIATION , the EAA Logo® and AERONAUTICATM are registered Thanks for all the hard work you folks put into it. Fantastic! trademarks, trademarks, and service marks of the Experimental Aircraft Association, Robbie Culver Inc. The use of these trademarks and EAA 539433 service marks without the permission of the Experimental Aircraft Association, Inc. The new Experimenter magazine is the best thing EAA has done in a long time for the is strictly prohibited. homebuilding community. James List EAA 16091 4 NO. 3/NOVEMBER 2012 I’m a Member because... EAA protects my freedom to build and fl y. Visit EAA.org/join to become a part of the world’s most passionate aviation community. Photo by Jeff Miller/EAA © 2012 Experimental Aircraft Association, Inc. NOVEMBER 2012 EAA EXPERIMENTER 2 News From HQ Don’t Forget Your Transponder’s ICAO Address The FAA reports that a number of homebuilders are installed to participate in automatic dependent surveil- not correctly setting up their Mode S transponders lance-broadcast (ADS-B). during installation. If a transponder is not configured correctly during installation, it can cause confusion The immediate problem for wrong ICAO addresses in the air traffic control system and may also confuse mostly involves airborne collision avoidance systems airborne traffic warning systems, with which all larger in larger airplanes. Traffic collision avoidance systems airplanes are equipped. (TCAS) required in all larger airplanes use the ICAO address to keep track of nearby Mode S transponder- Mode S transponders—the S stands for “selectable”— equipped airplanes. A wrong ICAO address could broadcast two different identifi cation codes. One code is possibly threaten the proper functioning of the traffic the familiar four digits we set as assigned by controllers. warning system. But there is another permanent Mode S address that is assigned to your aircraft at registration. This is the 24-bit A more widespread problem with wrong addresses will ICAO address that is an international identifi cation for develop as the FAA moves to its NextGen (next gen- your specifi c airplane. eration) air traffic control system that relies on ADS-B signals to locate and track aircraft. Mode S signals are When an N-number is assigned, an algorithm generates an a fundamental component of ADS-B, so the proper ad- eight-digit (24-bit in computer speak) code that is part of dress is essential. your registration. You can fi nd that code by looking at your N-number registration data. When a Mode S transponder The solution is for builders to carefully read all setup is installed, specifi c programming steps must be followed instructions and follow them closely when they install to enter the ICAO code during setup. Not all builders are a Mode S transponder or UAT system in their aircraft. following the correct steps to enter the ICAO code when Avionics shop technicians are well trained on this step, they install a transponder. The result is airplanes fl ying so the problem of incorrect ICAO addresses is almost around and broadcasting incorrect addresses. entirely with homebuilts. It’s also vital that an airplane owner or second owner change the Mode S ICAO ad- The ICAO address must also be programmed into any dress in his Mode S transponder if the aircraft N-num- universal access transceiver (UAT) when that system is ber changes.