Flybars are a critical component of RC Helicopters. As technology changes and flybars begin to become more and more obsolete in the world of RC Helicopter flying, their contribution to the flying process has to be replaced by components such as 3-axis gyro systems in Flybarless helicopters.\n\n\n\nWhy do RC Helicopters have flybars? RC Helicopters have flybars to keep the helicopter stable while it is in the air. In helicopters with mechanical flybars, these help keep strain off the servos that are housed in the rotor system of the RC Helicopter.\n\n\n\nIn this guide to flybars, we will explain in further detail how they work and talk about the differences between flybar and flybarless RC helicopters. We will also answer the question: Are there any advantages to going with RC Helicopters that have flybars?\n\n\n\nWhy RC Helicopters Have Flybars\n\n\n\nStability\n\n\n\nThe flybar is the component of an RC Helicopter situated above the blade. Once the rotor speeds up and the helicopter takes to the air, the flybar keeps the RC helicopter stable.\n\n\n\nMost modern RC helicopters fly with flybarless stability systems. They have gyros that keep the helicopter stable via electronics.\n\n\n\nFor those of you flying RC helicopters with flybar systems in place, you will notice that the flybar system does a perfectly adequate job of keeping the chopper stable while it is in the air.\n\n\n\nKeep the Servos from Getting Overworked\n\n\n\nThe servos on the RC helicopter are the components that convert the commands from your receiver or flight control system into physical movements.\n\n\n\nWithin the system is the swashplate, which is responsible for controlling the cyclic and collective blade pitch of the RC Helicopter.\n\n\n\nIn a flybar RC helicopter, the flybar itself is able to take some of the pressure off the swashplate servo by helping to control the movement of the motor blades.\n\n\n\nAn RC helicopter without the traditional flybar system in place has to be manufactured in such a way that the servos in the helicopter are able to adequately perform the task of controlling the physical movements of the helicopter, as is described in further detail in this article which appeared in Model Airplane News.\n\n\n\nHow Flybars Work\n\n\n\nThere is a paddle at each end of the flybar. The paddles on the end of the flybar are constantly working against each other while the helicopter\u2019s rotary unit is in motion.\n\n\n\nAs one paddle rises upwards, the other will rise downwards. This motion, described in further detail here, allows the entire helicopter to lean to the side, which has the paddle experiencing the lesser lift versus the other paddle.\n\n\n\nThis is how the helicopter alters direction in a longitudinal fashion.\n\n\n\nHow Can I Tell If the Flybar on MY RC Helicopter Is Broken?\n\n\n\nIf the flybar on your RC helicopter becomes broken somehow, you will probably be able to tell immediately by the way your helicopter is flying.\n\n\n\nThe flybar directly affects the pitch of the helicopter. The pitch is the angle the main rotor blades take while they are spinning. Being able to achieve correct pitch is important for many of the movements the helicopter will take as you control it.\n\n\n\nAn RC helicopter with a broken \tflybar may not be able to take off at all. \t \tIf it is able to successfully take off, you may notice it dipping uncontrollably to one side. \t \tIf the flybar has become bent in \tsome way that is not immediately noticeable, you may first notice the helicopter not responding very well to your movements on the dial of your transmitter.\n\n\n\nWhat is Flybar Mixing?\n\n\n\nYou may have heard of the \u201cflybar mixing ratio\u201d on RC Helicopters without even knowing what these terms mean. Here we will briefly discuss the three types of flybar mixing.\n\n\n\nFlybar mixing ratios alter the way in which the RC helicopter is able to move through the air.\n\n\n\nBell Control System: the stabilizer bar used in this set-up is basically just a weighted flybar without any paddles on the end. The rotor head is providing gyroscopic stability in the Bell Control System. There is a mixing arm on the weighted flybar that takes input directly from the swashplate, which is translating the flight control information into motions of the main rotor blades.\n\n\n\nHiller Control System: The difference with this setup versus the Bell Control System is that now after the input is sent from swashplate to the flybar, there are main motor grips attached to the flybar. The tilting flybar will force the motor grips to follow the same circular path as the flybar. This system results in increased maneuverability but also lag in controls.\n\n\n\nBell-Hiller System: This control system can be considered the best of both worlds. This system allows users to adjust the amount of influence they want the flybar to have over the main blades on the helicopter.\n\n\n\nDo All RC Helicopters Have Flybars?\n\n\n\nNo, there is a relatively recent development of the flybarless, or FBL, RC helicopter on the market. While it was nearly impossible to fly without a flybar in the past, new technology has helped with some of the downsides.\n\n\n\nSince there is no mechanical flybar to keep things smoothly, the functions it serves for the helicopter have to be made up somehow.\n\n\n\nThis comes in the form of software and a remote-control system. Many purists don\u2019t like the extra complication that comes with FBL and don\u2019t like the \u201cfeel\u201d of flying without a flybar. Still, as technology advances, perhaps the RC helicopter world will get closer to finding a way to have the best of both worlds.\n\n\n\nWhat Are the Differences Between Flybar and Flybarless RC Helicopters?\n\n\n\nStabilization\n\n\n\nStability is maintained in flybar RC helicopters via a series of paddles on the flybar while flybarless (FBL) helicopters owe their stability to the flybarless gyro system.\n\n\n\nWhat the flybarless gyro systems generally bring to the table is a more innovative or more modernized approach to flying. Take, for example, this 3- axis gyro system in which flight is set up through a PC or Control Panel.\n\n\n\nFBL gyro systems such as the one just mentioned can even be set by Android phones using bluetooth technology.\n\n\n\nFlybar systems are known to come in at lower costs than flybarless systems, but the set-up of flybar stability systems takes up more time due to all the moving pieces.\n\n\n\nStill, it could be argued that a flybar system is simpler since it doesn\u2019t require the programming that the modern flybarless systems require.\n\n\n\nGyro\n\n\n\nAnother component of flybar RC helicopters that you won\u2019t see on flybarless helicopters is the gyro that controls the tail of the helicopter. This is the only gyro component on a flybar RC helicopter.\n\n\n\nInstalling the head lock gyro on flybar RC helicopters involves using your transmitter to ensure that all the moving pieces are in place correctly. The process of installing a head lock gyro on flybar RC helicopters is explained in further detail in the video below. \n\n\n\n\nhttps:\/\/www.youtube.com\/watch?v=OlJ5TLhFA9k\n\n\n\n\nConversely, flybarless RC helicopters have 3 different gyros incorporated within the system, all built into one box. Control of the system is performed solely by electronics.\n\n\n\n.\n\n\n\nCrash Damage Potential\n\n\n\nThere is a greater potential for crash damage for flybar RC helicopters than there is for the flybarless RC helicopters. This is because flybar helicopters have more moving parts in their stability systems than flybarless systems.\n\n\n\nThe individual flybar helicopter parts may be cheaper than the gyro you buy for your flybarless system, but if you do happen to run into issues with the system, you will likely have to buy more parts than you would with a flybarless system.\n\n\n\nFlybarless RC helicopters are also often considered to be easier to maneuver than their flybar counterparts.\n\n\n\nTuning Requirements\n\n\n\nFlybar RC helicopters have more stringent tuning requirements than flybarless RC helicopters. This is because you have to ensure that all the separate components of the stability system on RC helicopters with flybars are correctly in place.\n\n\n\nTuning a flybar RC helicopter involves manually checking on components such as:\n\n\n\nThe rudder trim to make sure that it is in the right position \tCheck that the rudder has no subtrim \tCheck the travel adjustment \tThe paddles on the flybar to make sure that you have the desired rotation \tThe blades to make sure that they are giving you the desired trackability\n\n\n\nTuning flybarless RC helicopters is simpler than tuning flybar systems because adjustments can be made digitally.\n\n\n\nAre There Any Advantages to Going with Flybar RC Helicopters?\n\n\n\nResponse Time\n\n\n\nThe servo is the component of the RC helicopter that translates the electrical commands from the user\u2019s flight control system into physical movement. If you have chosen a flybarless RC helicopter over one with a flybar, you will need to consider the increased demands when it comes to servo performance.\n\n\n\nHere\u2019s why response time is affected:\n\n\n\nFast response times are of the essence for flybarless helicopter servos because you are expecting the same heading that controls the gyro for the tail rotor to also control the other cyclic or collective gyros on the helicopter.\n\n\n\nQuick response times are important for the combined flybarless gyro systems to function seamlessly. The servos on a flybarless RC helicopter have to work more to make little corrections to stabilize the helicopter.\n\n\n\nStability corrections are a vital portion of a flybar\u2019s contributions to the RC helicopter.\n\n\n\nIn addition to having to deal with more commands at once, helicopters manufactured to be flybarless need to be able to compensate for the lack of a \u201cbackup\u201d component to control the stability of the craft while it is in the air\n\n\n\nTunability\n\n\n\nEarlier, we mentioned that the ease of set-up can be a major selling point for flybarless RC helicopters over flybar RC helicopters. However, one benefit of the flybar set-up is the option for manual customization.\n\n\n\nOne expert on the matter brings up a good point that you can easily improve the stability of flybar RC helicopters by adding flybar weights. By adding weight to the flybar paddles, you can reduce the responsiveness of the cyclical controls, meaning that ever swift move will have a less dramatic effect on the overall stability of the helicopter.\n\n\n\nFlybar RC Helicopters Can Have Analog Servo Systems in Place\n\n\n\nAnalog servo systems may be cheaper than digital servo systems, but if you are rolling with a flybarless RC helicopter, you may not have much of a choice in the matter.\n\n\n\nThis concern has also been voiced by experts over at Model Airplane News.\n\n\n\nThe analog servos, typically consisting of plastic parts, may not be able to handle the demands of the flybarless RC helicopters. The servos on flybarless systems must meet higher demands as control inputs on modern RC helicopters are built to elicit more abrupt responses.\n\n\n\nAnalog servo systems may not be practical in flybarless RC helicopters because of:\n\n\n\nThe consequences of nearing or exceeding a servo system\u2019s torque rating: The torque rating alone shouldn\u2019t be relied upon when choosing a servo system, the tiny plastic gears in the system will likely not be able to handle \tthe increased workload \t \tEquivalent speed specs between analog and digital systems may be misleading: Servo speed specs are to be interpreted as how fast an unloaded servo can transit through 60 degrees. However, the servos do most of their work responding to frequent small inputs from the flight control system over the course of the flight rather than being commanded back and forth from one limit to the other.\n\n\n\nThe article ultimately concludes that although digital RC Helicopter servos are a much more practical option in most cases, you may be able to get by with the simple analog servo system if you are using a conventional flybar RC helicopter that will naturally have lower servo demands than the flybarless RC helicopters on the market today.\n\n\n\nThis also may make the conventional flybar RC helicopters a more viable option for beginners. Though they will have to contend with more moving pieces at the top than they would have with flybarless system, they may be able to avoid getting roped into having to purchase a digital servo system to meet higher demands.\n\n\n\nOnce they become more familiar with the ins and outs of RC helicopter ownership, they can look into getting a flybarless system and enjoying its conveniences.\n\n\n\nWave of The Future in RC Helicopter Flying- Flybarless Helicopters\n\n\n\nFlybarless RC helicopters are becoming increasingly affordable for the average hobbyist and most, brand new RC helicopters on the market today are of the flybarless variety.\n\n\n\nFlybar helicopters, such as the Cheerwing S107\/S107G Phantom 3CH 3.5 Channel Mini RC Helicopter, are still a great choice for those just getting into the world of RC Helicopter flying because they are affordable and there is less of a learning curve required to fly without crashing constantly.\n\n\n\nFlybarless RC helicopters are becoming increasingly popular with avid hobbyists due to:\n\n\n\nFewer \tMechanical Parts at the Rotor Head: Stability is maintained in flybarless RC helicopters via the use of 3 in 1 gyro systems that remove the need for separate components to control \tthe gyros for the tail rotor and the main rotor.\n\n\n\nTuning \tinvolves setting parameters electronically: A 3-Axis gyro system, such as this one, \tused in flybarless RC helicopters allows users to tune their helicopter through an 11 step set-up wizard. \tTuning \tflybar helicopters can involve a trial and error process in which \tyou are choosing the right paddles in order to get the desired rotation rate and choosing the right blades to get the right trackability \t\tSettings in flybar helicopters can be tweaked electronically \t\n\n\n\nThe Best of Both Worlds: Users have pointed out that flybarless RC Helicopters offer the best of both worlds when it comes to stability and acrobatics. You will not need to sacrifice the acrobatic \tpotential of your helicopter for more stability since the flybarless motorless systems removes unneeded weight at the rotor head \t \tNo need to update flybar paddles as you become more experienced: Novice pilots of RC helicopters will heavy thick paddles that allow the helicopter to have more of a hovering capability, but as they become more confident in their flying skills they will need to make the \tchange to paddles with a more acrobatic design \t \t3-Axis Gyro makes necessary adjustments on the fly: If you happen to be flying during windy conditions, you will not need to adjust the way you use your stick commands as the system will do some work for you to help keep the helicopter stable\n\n\n\nIn Summary\n\n\n\nRC helicopters have flybars to keep them stable while they are in the air. Flybarless helicopters that make use of a gyro system to control stability rather than a mechanical flybar have been developed in recent years and are far easier for the average user. \n\n\n\nThis technology allows users to make changes to system parameters on the fly, although the traditional flybar RC helicopter models may be more viable for beginners who are looking for something affordable.