alo George M Myers WHAT WILL WE DO new frequencies January 1983 issue spoke new RC channels terms anticipation gave some manufacturers prices conversions old equipment Now can speak new RC channels fact December 20 1982 add some data conversion prices Ace RC Inc I Conversion Ace Pro-Line RF deck transmitter $10 2 Conversion Silver Seven Pro-Line receiver $1250 3 Exchange Digital Commander receiver Silver Seven receiver $20 consider Ace did build Pro-Line units has considered heck dealand very adventurous attitude American manufacturer take consider ing product liability suits etc take look point 3 exchange unit Ace RC did build time new channels wish see results lot testing done Ace people during summer 1982 clearly demonstrated Digital Commander receiver doesnt work satisfaction 40 KHz channel spacing No doubt well finding other receivers same problem Ace RC bending over backward help AMA show new RC channels can used advantage think should keep mind considering next pur chase older proven channels new ones Another American builder Cannon RC Sys tems has crystals waiting will Technique make conversion system price $10 crystals plus whatever labor charges state repair system warrants expect mini mum about $17 labor convert brand-new system Ill report other systems conversion prices learn what time cant say what owners some Oldies Goodies like EK Logictrol Orbit Heath will Im sure something will come up now work Id say Use until dont way conversion prices listed January 1983 column prices apair crystals did include labor cost can get crystals price youll have tune equipment yourself Service charge installing new crystals retun ing equipment will range what Ace RC chargingWorld Engines example has $18 service charge Id like point out that price $10 pair crystals what manufac turers quoted real bargaintheyre really worth about $25 Theyre offering price gesture good will AMA function reporter Model Aviation among other things capacity have visited some local RC clubs inquire reactions new reality channel availability distillation what Ive heard members Whitman Flyerssport RC airplane club Long Island Silent Flyerscompetition RC Sailplanes Hover Loverssport RC Helicopters Hecksher Model Yacht clubcompetition 32 Model Aviation Thuu uuIwry UGK5 spewal sney-be arm taisciric rower pacasj naving neavier inter-cell straps attached welds heavier lead wires heavier compared conventional RC receiver transmitter battery pack Reading ciockwise big biack squarepack upper left corner see 16 5R900 cells set up Astro 15 motor gear bait drive 4-and 6-cell SR 1200 packs electric race cars although 5-ceil packs eeem sudden 7-cell 8R1200 pack cobalt siectric motors naked 6-cell SRI200 pack SRS Larry Sribnlck keeps telling George electric-power airplanes best George weakening bItmight try one days RC sailboaters Grumman Model Aviation SocietyRC anything Long Island Fly Together Societysport RC airplane fun Island Model Yacht Clubsport RC sailing New Jersey RC Helicopter Societysport competition I Lets assign member own private channel reminded FCC saw fit give us total 80 channels because expec fed some will unusable sailboat club went ahead assigned channels anyway 2 How will ever manage channels club five-in-the-sky rule Does anyone suppose buying dozen clothespins will break club treasury often find dozen guys field two flying Often reason five active fliers congregated fre quency likely effect increase number available channels combined explicit permission change RC transmitter frequencies see FCC Docket 82-181 RM-3248 p 8 para 24two places will shorter lines five flight stations whenever such lines develop manufacturers still have work out details channel-changing FCC 3 With channels bound have interference both true false truth PRS Primary Users have avoided 7208 7216 7224 7232 7240 7296 MHz courtesy us though theyve legal permission use along doubt theyll jump channels immediately its reasonable expect will time will expect us move out new channels authorized follow choose move consequences own fault channels may clear area talk folks Houston Kansas City Cincinnati Seattle Schenectady hear other stories After youve made move actual flight tests such done Ace RC reported above have shown excellent performance can obtained 40 KHz spacing provided equipment good enough Ive telling year secret success new channels will better receiver thats still way 4 If have radio converted will give narrow-band capability absolute basis will However start very good equipment change crystals have resuned frequency-spectrum analyzer may very well enjoy relatively narrow-band performance 5 1 have new radio works great no inter ference problems should convert new channels Wait until batteries die have crash damage interference crops up December 1988 whichever comes first can expect manufacturer s service departments will jammed sets people need change because some channels unusable parts country let guys need relief get serviced first Some folks will rush out convert will buy new radios new channels Theywill pioneers Bear mind given channels because interference expected some channels designated AMA use January 1983 least likely have problems thats no guarantee essence situation will testing new channels response AMA has created office Frequency Coordinator per AMA district person single-point-of-contact information frequency matters begin ning important function will receive interference reports will collated correlated other such reports shipped HQ incorporation data base hope have computerized will possible enter base Zip Code come out list channels known interference problems specifically area Watch AMA News names details Better batteries object essay make feel much concern quality batteries RC system Larry Sribnick does Now good time perform some main tenance RC systems because should midwinter read ask Larry Sribnick9 Larry Sribnick SR Batteries Inc Box 287 Bellport NY 11713 custom-builder battery packs RC system owners Larry offers fan tastic array transmitter packs flight packs electric power packs planes cars boats etc cant find what want Larrys catalog now probably will after place order Whether after LSF Level V trying set record oriust looking some flight packs should write Larry Remember custom-builds battery packs cells used SR packs Aerospace Quality 100% individually screened quality loaded interesting features such resealable vents all-welded construction cells assembled unique manner permits pack have little flexibility conform whatever irregular supports finds inside model result of cells show very small loss power storage typically 1% per day SR batteries designed fast charging accept usual C/ 10 overnight charge just well batteries accustomed addition cells designed have essentially constant capacity between 50 F 1250 F covers use conditions nicely feature find charming pack energy smaller volume Take example Silver Seven trans mitter use kinds experiments have long wanted battery capacity However have rather small hands Continued page 124 March 1983 33 Whats internal difference between standard 450 mAh cell SR 900 mAh cell about same external size George cut open comparison want try yourself George advises electrolyte very dangerous wear rubber gloves face mask work over surface like Formica can make cleanup easy Look difference areas plates George has say column ucorge maae some smigni sesis new Inanne d4 JR Apollo iranamisser enu p~ Aquila Sailplane being pumped up another flight cigarette mighter receptacle Georges car needed good excuse fly cold December windl { Join NATIONAL FREE FLIGHT SOCIETY help develop threshold low speed aeronautical technology NFFS AMA special interest group promotes scientific nature model aeronauticsyear ly publishes SYMPOSIUM volume 10 issues NFFS DIGEST AGRESSIVE participate THINKING group Send membership applica tion HAL WOODS Printer 1 YR 707 Second St 2 YR Davis CA 95616 Checks Payable NFFS JR SR/OP 7501500 13502700 Friends AERO CLUBS OF ISRAEL SUPPORT AERO MODELING IN ISRAEL FREE FLICIIT NATIONAL CHAMPIONSHIPS BEERSHEBA ISRAELAUGUST 1983 FLIGHTS -ARRANGEMENTS- TOURS 47-02 29th Ace. Fleshing NY 11354 GET ORGANIZED Metes set 4 Sturdy files holds Over 4 yeats itt yitur tuacitle Sirft magazines 4 MAG FILES $495 Send $455 PIes St 00 gosfage handling DON INDUSTRIES PO BOX 388-K DOVER NH 03820 124 Model Aviation Vasoline permanent lubricant rustproofer Before installing elevators glue vertical stab horizontal stab slot tail post slot 5-mm epoxy Use right angle assure square horizontal stab Add R5 skid Epoxy wire skid place Add fiberglass skid aft fuselage strengthen skid against side loads during possible ground 1oops Paint Mono Kote skid area Install elevators using epoxy joiner wire hold elevators stab masking tape lower sur face Leave 16-in gap Iron MonoKote hinge full-span top sur face Check free travel 7/16-in up down Add -in patches Mono Kote underneath ends elevator Install rudder using plastic hinges locations shown Install rudder control horn after cutting away innermost hole provide clearance fuselage side permitting least 2 left right travel Spoilers installed MonoKote hinges after application small amount Vasoline torque rod bent ends no glue spoiler should lay flat box flush upper surface wing Hold spoiler place mask ing tape aft edge assure / 16-in gap around seal down Mono Kote hinge forward edge Check spoilers free travel Balance location balance CG shown plans 32% mean aero dynamic chord fine general flying Penetration good moderate winds strong winds ballast can added fuselage allowing CG move forward about inch just about main spar Flying no special tricks flying Zephyr 1100 flight characteristics can described short phrase excellent floater isjth good penetration grooses up winch line strong enough zoom launches examples built date have performed similarly almost no experimentation has made attempted improvement Climb angle launch exceptional great strength eliminates worry about folding wings Highspeed dive capability permits rapid descent flutter altitude time runs out duration evcnt Add plastic electrical tape around wing Outer dihedral break seal air gap keep Outer panel place ballasting thing locate ele vator servo couple bays back between Bulkheads F5 F6 leaves fuse lage bays fore aft F3/ F4 open ballast Sixteen ounces lead will fit will raise wing loading up 4 oz sq ft Additional ballast can added wing spoiler servo box some addi tional strength added hatch Pop-offs have problem nearly vertical launches Just sure strong tow hook used because regularly breaks 120-pound-test winch line Happy thermalling Radio Technique/Myers Continued page 33 designed ease used shallower box 2 folks use put provisions two special cards left no room addi tional battery packs Along came Larry 900 mAb cells look what happened Ace 450 mAh cells plastic boxes 74 222 485 8 oz SR 900 mAh cells sleeve 70 206 ii 525 93 oz weight increase 13 oz. doubled transmitting time enough room box accept extra 4 width actually ended room other two directions does cut open SR900 cell find out Well laws physics havent changed want capacity use plate area micrometer says plates SR900 cell 2 3 thick 450 mAh cell Add fact 450 mAb cell wound plastic rod white SR900 isjust wound mandrel appar ently later removed throw considera tion SR900s can measures 645 OD 450s can measures 535 OD. begin understand SR cell winds few turns package As regular readers know Ive using SR900 packs Helicopters Baron 20 Heliboy now can say after 50 hours flying havent problem traceable batteries use SR900 packs deal added current drain some gyros rather add second pack purpose would add lot weight comes charging plug MEN C 50 charger walk away lunch com pletely discharged pack will stay High Rate about 90 minutes often theyre back Ioss Rate less hour Lets end discussion batteries yet another Fast Field Charger FFC Ace RC recharges both Transmitter Receiver same time circuit BE LEADER SCALE DOCUMENTATION SCALE DRAWINGS9PHOTOS-BOOKLETS MODEL PLANS 1982 AIRPLANE CATALOGS $200 REPLA-TECH WINTERNATIONAL 12 K I48500 MC KENZIE HiA/V VIDA OREGON 87488 update loug Spreng\ Battery Manage ment System puhlishtd RCVI has ss jthstood test ol timi orks off 12 volt batters gets oh done less hour eases Yoti can usc SR900 packs hut will take longe built kits fes months ago have used good results Sinee people ask time timh tor good fteld charger now feel can sas ou Il like Its simple operate temperature-compensated reasonably priced charges common four-cell eight-cell combination unIv charges 5011 mA about 85 full charge flight pack 5fl full charge transmitter reverts both safe 35 mA constant charge rate George tIAIier 70 kroehlich Foroi Rd Hiiksx die \ lht0l AMA Building/Mankowski Continued page 34 tanooga RC Club Mt Rainer RC Society Alexander & Alexander Drew Allen Milwau kee Flying Electrons Radio Control League North Carolina Larry Regier Billy Johnston Gold Members donated $50 Building Fund Bill Hinnant John Kirk III Douglas KnothThomas Lacey Philip Judith Coopy Donald Conneil Jesse R Mitchell Boeing Marine Systems Frieda Homer Smith Collins RC Club LARKS Aero Bats Show Team Lee Minim Roy E Hoover Harry C Seth Judson Cushing Bob Burnett Leo Gabriels Nick Nicholson Nick Johnen Charles Alicks Ukiah Prop Busters Leonard Kendy Irvin Aker Tn Valley Radio Control Club William R Bigge Ukiah Prop Busters Leonard Kendy Irvin Aker Tn Valley RC Club William R Bigge Howard L Chapman Herbert Consolvo Allan L Crane DR Cummings AlexanderJ Drum mond Israel Dubin Robert R Erickson Nor man Evans Morton R Ferrell FL Friedli Kenneth L Glemby Elonzo C Gollaher RS Graham Alfred W Griesbach John R Hooker Also included list Gold Members Arthur J Johnson Edgar M Joiley John L Koenreich Dan McDonald Johnny L Mathis Ronald W Merrill John E Miller Robert Miller Joseph M Nunes Lawrence p ott Robert L Payne Russell J Petersen Paul Plecan Kee C Pohar Jay M Replogle Richard Roe Richard C Speidel KF Spiller Edmund W Stone James R Tyndall RA Varcoe Robert W Waterman Robert WinchBig Bangers/Beckman Continued page 39 eases painted red cylinders black After reassembly die-east alumi num manifold aluminum tube exhaust pipe added ready go engine started briefly test run before being shipped final produet reaches customer finest Big Bangers available today some details may differ people converting engines use go through essentially same process exception worth noting Hobby Lobbys Evra 190 19 cu engine has spe eially designed crankcase similar smaller model engines rest parts engine used weed whip crankcase design owned Hobby Lobby engines made manufacturer original engine put ting somewhat same category Quadra Whatever source fine Big Bangers available today what make possible us enjoy Giant Scale modeling convert own engines wouldnt see fly-ins like IMAA Fun Fly Festival hundreds Giant Scale aircraft participating RC Scale/Wischers Continued page 41 available information sources including factory After weeding out misinforma tion producing set correct drawings RCM&E magazine Bob now finds himself leading authority plane Similarly Dave Reid researched Kinney Sportster after finding rare originals 100 miles home has pro duced set drawings quarter-Scale model DGA Designs 135 E Main St Phelps NY 14532 Dave asks stamped envelope gathered information home-drawn three-views photo enlargements nega tives rare birds may greater value modeler suspects Museums very grateful receive such dataand place dollar value upon can used tax break GRISH LARGE eli William R Wronski William D Zobel Vince Mankowski Assistant Executive Director Plasticote Prope new wood blades have phenolic coating extra stiffness makes propeller stiffer stronger . yet thinner best efficiency Propeller 24x92O 22x617 Other sizes will soon available HARDER LIGHTER STIFFER 3/8 Bore bushing 5/16 bores Usable Big engines up 42 cubic AT YOUR DEALER GRISH ST JOHN IND 46373 126 Model Aviation
