1 . k c a B e u q r o T Volume 11 Issue 9 Hobart Model Aero Club inc. PO Box 1117 Rosny Park 7018. Inside this issue: Around the hangar 2 Correspondence 3,4 Office bearers 5 Letters to the editor 6 Photo pages 7&8 March/April 2011. Editor: Garth Wilmot PO Box 971 Rosny Park 7018 Phone 62431790 Email: firstname.lastname@example.org President’s Report. Arrangements have been made to have T.M.A.A. President Dean Williams to attend the Kelly Field clubhouse at 10.00 a.m. On Sunday 10th April for the purpose of addressing members and answering questions regarding the proposed state flying field. This is quite an issue as such action could have a dramatic effect on T.M.A.A. subscriptions, and members should make a special effort to attend. This meeting will be held regardless of weather conditions on the day. Correspondence in regard to this matter is tabled on pages 3 & 4 of this newsletter. We are on the web. hobartmodelaeroclub.org.au Secretary Tony Sheppard at the electric fly-in. 2 Around the hangar. disheartened after crashing his Sea Fury, but he is now back in action. I don’t think I can recall a period of worse flying weather than that which we have experienced for the past six months. I am glad that I am able to fly mid-week and select the best of the weather. Bob Morrison is really enjoying his Parkzone Radian II electric sailplane. He is very pleased with it’s performance and would certainly recommend it to other members. I believe that Peter Hubbard has achieved the almost impossible and managed to prang my old Barnstormer 72 which has seemingly been around for ever. It started life with the first OS 60 FS which battled to get much more than 50 feet altitude and has had many different four stroke motors in the following years. Even Nils Powell couldn’t destroy it! Nils Powell is acting as chief flying instructor during Peter Ralph’s absence overseas. He is coping but looking forward to Peter’s return. Peter Ralph seems to be having a really good time touring in China with partner Amy. From his photos it would appear to be fairly cold in the northern area where he has spent some time. That is some big loco behind him! Michael Van Niekerk is a regular flier at the field now that he has managed to retire from work. He used to spend a lot of time overseas and therefore found it difficult to find much time for building or flying. Rick and Gaynor Stillman have now settled at St. Marys and we will miss them at Kelly Field. It is some distance to the nearest club flying field so I reckon that there won’t be much flying on the agenda in the near future. We wish them well in their new abode. I hear that Michael Van Niekerk has a new Tomboy just waiting for an engine. The “Tomboy” competition is rapidly growing in popularity, probably due to it’s simplicity. It’s pleasing to see Ray Maunder back at the field after a short layoff. He was really I can’t help noticing the diversity of the pegs on the 2.4 GHz board. Surely it is not too difficult to make up a decent peg. “Shame” 3 4 Garth’s specials. Spektrum DX7—complete unit—bargain price, one only $400 Hitec Laser 4—complete radio c/w batteries & charger $100 Magnum .46—two only at bargain price $95 ea Phoenix Boomerang 60—the most popular trainer $150 Phoenix P39 Aircobra—Fine scale model $170 Seagull PT19—easy flying scale model $150 Field box kits—easy to assemble $30 Right Flyer 40T MkII—great trainer $100 Spektrum Tx 2.4 GHz module & Rx—make an offer Garth Wilmot Phone 62431790 . 5 HMAC office bearers for 2010/2011 President: Michael Hawkins.8 Calder Crescent, Blackmans Bay 7052 62295902 email@example.com Vice-president: Peter Ederle. 32 Pegasus Drive, Dromedary 7030 firstname.lastname@example.org Secretary: Tony Sheppard. 16 Quamby Avenue, Sandy Bay 7005, 62316700 email@example.com Treasurer: Stuart Smith. 44 Grange Road, Rokeby, 7009 62477423 firstname.lastname@example.org Committee: Jim Dicker. 32 Lachlan Road, New Norfolk 7140, 62614088 email@example.com Robert Morrison. 434 Tinderbox Road, Tinderbox 7054, 62296376 Roy Baker. 18 Sirius Street, Howrah 7018, 62473834, firstname.lastname@example.org ************************************************************************* Electric Fly-in 5th March 2011. The State Electric Fly-in was held at Kelly Field on Saturday 5th March. Unfortunately, while the weather was ideal, attendance was somewhat disappointing. Apparently poor scheduling and a lack of publicity resulted in only one participant from another club. Greg and Alice Robertson made the trip down from Launceston and Greg’s models certainly created a good deal of interest. Most of the regular club electric fliers were present and generally quite content to just fly without any form of organisation or competition. I have my own theories as to why the event was scheduled for Saturday only, bearing in mind that last year’s very successful fly-in was held over a long weekend. As a result we had a much larger turn out with several members of other clubs and three mainland entrants. Perhaps common sense may prevail if we are fortunate enough to be allocated the event next year. Thanks are due to Roy Baker who volunteered to prepare the barbecue lunch and certainly did an excellent job. 6 Letters to the editor. I have read Nil's recent warning to Club members concerning the potential problem with 2.4 Ghz equipment and, in my case at least, the message prompted an immediate check of all of my current models, electric and IC powered, to ensure that they were in fact all correctly set up. At the same time I very carefully re-read that particular part of my Spectrum DX7 operational manual which relates to the system setup procedure; the operation of the Spectrum's Smart Safe system, and the procedure to be adopted in its operation. In Nil's recent circular, he suggested that most 2.4 GHz frequency equipment has a failsafe system built in; this providing the ability to programme the receiver so the aircraft controls go to a predetermined position should communication between the TX and Rx be interrupted. In fact, in the case of the Spectrum DX7 system, you have no option to decide whether or not to implement the Smart Safe system. As clearly explained on page 18 of the manual, the fail-safe positions are stored automatically, via the stick and switch positions on the transmitter, during binding! So if you inadvertently re-bind a model with the throttle stick at full power, that becomes the fail-safe position whether intended or not! In these circumstances, the final point made on this subject on page 19 of the Spectrum manual is certainly the most important. That is that, after you have set up and adjusted your model, it's vitally important that you rebind the radio system so that the final corrected low throttle and neutral control surface positions are established as the fail- safe settings. Given the above, only now some 4 years after initially buying my Spectrum system, have I personally come to understand how very easy it would be to create the circumstances where the fail-safe throttle setting comes to be reversed. Imagine - you have a brand new model, all ready to go with your new radio system installed and connected, but not adjusted or bound to the transmitter. You follow the recommended Spectrum procedure and ensure that low throttle is selected during the initial binding process. You do your range check and after waggling the sticks etc realize that the servo connections to the throttle are reversed. No problem of course with the Spectrum system; just enter Function Mode and reverse the throttle servo direction, and it's all systems go. Or is it? The question is of course, did you also remember to re-bind the system? If not you have an accident waiting to happen! I know that at one point during the past four years, I did exactly as I have outlined above. I was perhaps saved from a very nasty accident simply because the model concerned was IC powered, not electric; and fortunately my Spectrum radio system has performed almost faultlessly throughout that period. Lesson well and truly learned! Chris Rowe I have suffered an accident with an electric powered model in similar circumstances and the problem was, that in following the procedure to rebind after final set up, I did not disconnect and reconnect the battery , which was certainly not the brightest thing to do. There is no fool like an old fool! As a result the receiver went into failsafe on high throttle after I had previously reversed the said throttle direction. I believe the last accident at the field was caused by turning the transmitter off with the receiver still active. This is a no-no at any time regardless! Never-the less the model was programmed without final binding in the correct fail safe positions. As said before, a lesson well learned! Garth Wilmot. 7 Extra 300 – Greg Robertson Data: E-flite Extra 300 – Span 1330 mm Power: E-flite 32 – 4S 4000 with 13 x 3.5 prop The 3D aerobatic capable model was also an outstanding performer. Power to burn, Greg gave the Extra the “full treatment” with a powerful, smooth display. An easily recognisable model the Extra gives a realistic aerobatic performance that mirrors the full size aircraft. Another example of the latest state of the art electric package that gives a performance only dreamed of a few short years ago. Toledo Special – Garth Wilmot Data: Hanger 9 Toledo Special – Span 1760 mm Power: E-flite 46 – 4S 3700 with 14 x 7 prop The brand new cream & white semi scale model was given its maiden flight by Greg Robertson. After the initial shake down circuits Greg showed what the model was capable of with a smooth aerobatic display including inverted. Very nicely built by Garth the 1940’s style model with wheel spats looked absolutely superb in the air and all agreed it was one of the most appealing models seen for some time. A line-up of models in the pits. A variety of models belonging to Peter Lambert & Ian Searle. Toledo Special. Photos and details were supplied by Bill Deal. 8 Hobart Model Aero Club inc. PO Box 1117 Rosny Park 7018 Michael Rutledge’s collection. Bob Morrison’s models. Wind S – Greg Robertson Philip Harrington with his diverse fleet. Data: Sebart Wind S 50 E – Span 1580 mm – length 1660 Power: Hacker A50 – 6S 5000 with 16 x 10 prop State of the art pattern model the Wind S expertly flown by Greg shows just how far the modern electric powered model has come. With the equivalent power of a 90 ic motor the Wind S showed incredible vertical capability with knife edge performance particularly impressive. Very well engineered the model is surprisingly light for its size and the finish is the usual attention to detail that we have come to expect from Greg. The only modification is a new canopy that replaces the original that is “resting” somewhere in the long grass at the Symmons field!
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