Radio Control: Helicopters

THIS MONTH going look gyros know ever since Collin Cameron Tough started publishing RC Helicopters Magazine youve told gyros necessarybut gyro used model Helicopter employed dampen movement around yaw axis Depending much gain authority gyro possesses tail can transformed gentle kitten instead twisting feisty tiger What gyro exactly very sensitive magnetic motion sensor have think little black box makes tail rotor much manageable imagine quite few novice Hel icopter pilots Out reading please listen gyro mandatory make RC Helicopter fly will however decrease flight workload left thumb good thing because cases try ing control tail can cause overload thinldng department youre learning So recommend use gyro learning fly taking advantage its ability decrease radius learning curve once proficient will learn kick gyro Out depending need Lets assume youve now decided get RC Helicopters youre collecting equip ment youll need So gyro buy Tough question see seems everyone sells gyro system Futaba Sanwa Circus Min iature Aircraft Supply Gorham Century Sys tems America hope didnt forget anybody Whenever forget get letter bombs anyway get idea suppliers sell gyros work Trying decide system better other tough think ultimately has preference cant honestly say preference based solely gyro performance theres just noticeable difference example going look two gyros First now-legendary KO gyro Japan once imported Krafthence name Kraft gyroandnow imported solely Gorham Model Products GMP KG-lK called stick-authority gyro What means tail rotor lever transmitter neutral position gyro can exercise its max imum authority machine Likewise control lever deflected its maxi mum throw gyro has its minimum authority would expect amount author ity linear corresponding movement tail rotor control lever KG-lK very simple gyro install operate adjustment needs make sensitivity must determined particular model has wellaccepted unit perfect sport flier second example Futaba 152 gyro As picture shows gyro has few com ponents KG-IK 152 featuring two distinct gyro output sensitivity rates typifies contest-type unit What means type gyro no stick authority so-called high low rates gain authority pilot decides rate re quires given maneuver via auxiliary channel transmitter switches high low vice-versa pretty nice setup appears way gyros going Now go local field see gy ros locals using Chances will several aforementioned types use may decide go gyro radio manu facturer sells case find fits needs find someone help give hand setting yours up first time Before installing gyro must first sure Helicopter reedy mean must make reasonable ef fort ensure no slop binding tail rotor linkage must flimsy twisting double-centering pushrod will make RC Helicopter Some hints subject very careful taping plastic pushrod housing tail boom check smooth operation hand secure Continued page 92 March 1988 49 Radio Control Helicopters Larry Jolly 5501 W Como Santa Ana CA 92703 Hirobos beautiful little Hughes 500E shell Shuttlestraight out box Lar ry will talk about next month Larry shows mounted Futaba 152 gyro GMP StorkLook closely Gyro self rounded box off Large white disk Airtronics servo-output wheelfor creased collective pitch travel Just below Futaba gyros black boxes Two Helicopter gyros available Above GMP KG-i K stick-authority type useful stabilizing both choppers stiff-wing birds Below Futaba 152 different kind gyro has adjustable high- low-gain sensltivty settings can Interchanged radio command Heres check see gyro hooked up correctly Left Looking down tail rotor Larrys GMP Stork shows high pitch needed right rudder Right sharp twist gyro case left should result right rudder Completely Fuel Proof Nylon Rubber Parts Cat No 102 Air Cleaner Coarse Cat No 202 Air Cleaner Fine Replacement Inserts Cat No 104 PkI2 Inserts Coarse Cat No 204 PkI2 Inserts Fine FITS MOST ENGINES 25and UP SEE YOUR LOCAL HOBBY DEALER IF UNAVAILABLE LOCALLY SEND TO Add 75 shippingMichigan residents add 4% sales tax Bru Line Industries Inc PO Box 3786 Center Line Michigan 48015 $225 $225 $195 $195 RC Helicopters/Jolly Continued page 49 station tape hoped Hel icopter manufacturers will eventually go way Schiuter Schoonard provide highquality pushrod standoffs tail rotor pushrod Now does Helicopter have resting place gyro Helicopter does come supplied gyro mounting plate can easily put together some scrap plywood must also take account need amp-hours drawn flight battery pack drive gyro dont use separate backs gyro receiver limited 450 mAb packs would use two However since servos drawing current ones fixedwing model because servo being driven frequently would suggest install 1200 mAh battery pack drive both air borne electronics gyro youre flying Shuttle Cricket new 800 900 mAh San yos will let stay front edge center-of-gravity still give enough juice power airborne systems Now have rest logistics squared away last important detail Before fly newly installed gyro must repeat must determine gyro operat ing right direction machine know some pros laughing right now honestly Ive received calls three guys last month gyros backwards Talk about catastrophe Trying fly reversed gyro like leaning punch So novices please listen Check tail rotor servo operating right direction instance using GMP Stork example has clockwise-rotating tail rotor mounted left side boom Looking what tail ro tor does make Helicopter turn right see must increase positive pitch tail rotor blade shown picture have determined tail rotor servo hooked up correctly can check gyro also correct Turn radio gyro possible turn gyro sensitivity its highest will make gyro-induced cor rection easier see Now grasp gyro hand quick motion wrist twist left should note quick increase tail rotor pitch gyro does its job youre sure have friend help check tail rotor motion have determined gyro works right direction can mount gyro body Helicopter Most gyros have lugs mounting screws Another accepted method mount gyro body double-sticky foam tape novice may subject machine violent impacts might suggest use foam tape should keep damaging gyro body bad crash cabin area demolished Im running out room Ill tell what Im going leave hanging until next month gyro installed adjusted really dont want rosh adjusting gyro So please tune back next month well fin ish adjusting gyro Ill flight test Hirobos new Hughes 500 shell Shuttle unfortunately means X-Cell report will pushed back month also BCNU 92 Model Aviation * * Long Engine Life * * Use BRU LINE Air Cleaner