All DIY Flight Sim products are produced by me, Matt Thomas, here at Roger Dodger Aviation. These flight simulator build plans were originally sold as downloaded products. The customer would buy the instructional videos, manuals, and templates, and then download all contents in a big zip file. The customer would then open the files on a PC to view all the content.
That was a great idea in 2007, but not such a good idea 10 years later. Customers wanted better access to the content, and modern e-learning was the answer. With online tutorial courses, a student doesn’t have to sit through a giant video or sift through a 100+ pages of flight simulator build plans. I re-formatted all the content so each step in the building process has a short video clip, and the illustrated instructions for that step only. The plan drawings and printouts are presented with that step, instead of buried in an appendix.
You can now access the DIY Flight Sims courses with any device, even tablets and smart phones. This means you can bring all the instructions with you to the garage or workshop when you work on the project.
DIY Flight Sims made a huge leap forward in 2017.
How to Get the Updated Flight Simulator Build Plans
If you purchased an old Download version of a DIY Flight Sims product, you can get a free update to the new online course. The flight simulator build plans are in a better, learner-centered format, and many courses have additional material now.
Want the update? Simply email me at DIYflightsims@rogerdoger.net and tell me what product you bought and what email address you used. This will help me track down your order. Also tell me where you bought it if you purchased from a 3rd party vendor. I’ll send you a coupon code that will give you free access to the course.
New online courses are available for the following products:
You will have access to the original content for that product, but in the new format as an online e-learning course. I’ve updated and improved some of the projects, so you also get any new material that I’ve added. In addition, you also get a monthly notification of any future updates I make to the products in the Roger Dodger Insider. Finally, you also get free access to Builder Academy, which is where you learn all the basic skills for building DIY Flight Sims.
The F311 DIY Side Joystick Frame project demonstrates how to build a simple and useful DIY HOTAS mount for your flight simulator controls. You can attach the joystick, throttle, and rudder pedals to this sturdy framework. Furthermore, you don’t have to modify your office chair or desk! The new upgrade provides more room on the side stands which is especially helpful when you wear a Virtual Reality headset.
How Do You Get the Upgrade?
The project upgrade is FREE if you already purchased the F311 DIY Side Joystick Frame. Just email me at DIYflightsims@rogerdodger.net to get your upgraded version. Be sure to tell me what email address you used so I can verify your order. Then, I’ll send you a coupon code that will allow you free access to the project.
You can get the updated F311 project here and then access the plans on any device. The F311 instructions are completely online, so you don’t have to download anything. The instructions, streaming videos, pictures, and printouts are all included with this online training course.
More about the DIY HOTAS Mount
I realized that I needed to make a few changes to the F311 frame when I tried the Oculus Rift VR headset. Remember, you can only see things inside the headset when you use VR, so it’s difficult to tap a keyboard key or find your mouse. As a result, my solution was to attach a trackball mouse beside the joystick. It’s always in the same place, so I don’t have to look for it. I tested (e.g. played with) this solution for many hours on Elite Dangerous.
Even in its original configuration, the F311 Side Joystick Frame works well with many types of flight sim setups. It’s easy to slide the frame under a desk or table, and then roll up to the frame with your office chair. Hold your chair in place with the Velco straps. Remember, you don’t have to modify your chair or desk to use this DIY HOTAS mount. This is a great addition to your home flight sim and works well with Lockheed Prepar3D, X-plane, Flight Sim World, FSX Steam, and others.
Marcin Strzyzewski invited me to do an interview for Onet online in Poland. Onet posts articles on a wide range of topics so I was happy to provide info about building flight simulator cockpit. Below are Marcin’s questions and my answers. Please let me know what you think of my responses.
1. What is the biggest fun in flight simulation?
Flight simulators can do many different things so that depends on what interests you. Think of the flight sim pilot population as three parts: Part 1 are the people that enjoy flying airliners with their flight simulator. Many of these users join Virtual Airlines and fly the same routes in the simulator as they would in real life. They fly online with other users that serve as air traffic control. Part 2 are all the pilots that used to fly in real life, or plan to fly later in real life, or they are active pilots now. You see these people using their simulator for civil airplanes and helicopters like the ones you would find at a flight school. Active pilots can fly a lesson in real life, then practice the same lesson at home with their simulator. Part 3 are the gamers and casual users. They fly space simulators or air combat simulators or maybe they just play around and fly for fun. This also a large and important population.
For me personally, I enjoy all the above. But most of all, I enjoy designing and building cockpit enclosures for home flight sims. I call these Do-It-Yourself (DIY) Flight Sims.
2. If some of our readers want to start making their own simulator, what is your advice?
First of all, know what type of aircraft you simulate the most. For example, a helicopter simulator project will look a lot different than an airliner simulator project.
Second, know your budget. If you live in a country where PVC pipe or lumber is really expensive, you should know that before you start. If you will buy new displays or new controls, start looking for sales. Retailers usually run a sale every month or two.
Third, and perhaps most important: negotiate with your spouse. A flight simulator will take up space in your home that can’t be used for other things. I designed both large and small DIY Flight Sims, but they all take up some measure of space. I recommend you talk this over with your spouse prior to construction. Note: if you can make the case that your children or grandchildren will somehow benefit from your flight simulator, this can help.
3. What is a most common mistake of the beginners?
The most common mistake is never starting the project. Actually, just getting started can be the most difficult part. No matter how large or small the project, you finish them all the same way: one step at a time, over and over, until you are done. I think my DIY videos help because you can see the building process before you personally start construction on your project. Just. Get. Started.
4. Building flight simulator cockpit sounds pricey is it in fact?
The most expensive components are the ones that keep going down in price: computers, graphics cards, touch-screens, and large HD displays. Therefore, these items get better and cheaper every year for building flight simulator cockpit. Other components are the flight controls and switch panels which can be good retail models, or more expensive premium models to fit your budget. My videos show how to build cockpit enclosures with materials from a home improvement store. Those materials are inexpensive in the USA, UK and Canada, but maybe not in other countries. For example, PVC pipe is expensive in New Zealand. I produce videos because they are the best way to teach building flight simulator cockpit.
5. What software is the best for simulators?
The flight simulator community (including third party developers) is unique because it mainly built up around Microsoft Flight Simulator X (FSX) for over a decade. Dovetail Games gave FSX new life by developing a version for Steam, however it’s still old software. As a result, we have wondered for years what will replace FSX, and today we have some newer options. Prepar3D Lockheed Martin’s Prepar3D (P3D) was developed by fixing and modernizing the old FSX code. P3D is an excellent flight sim platform, but some activities are prohibited because of Lockheed’s odd licensing agreement with Microsoft. X-Plane Laminar Research’s X-Plane 10 is also a solid flight sim platform with all the options of FSX, but with a smaller user base and somewhat fewer options from third party developers. X-Plane 11 was just released this month so it will be interesting to see how it performs in the market. Will X-Plane 11 be the ultimate replacement for FSX? We shall see.
6. Since now the best option was multiple monitors setting. Is this better now to use VR headset?
That is an excellent question, and the answer really depends on what type of flying you want to do. If you want to fly combat missions or spaceships, VR is a great option if you can afford it and if you don’t wear glasses. For example, Elite Dangerous and War Thunder are awesome in VR. The depth of field and the immersion are astonishing. Keep in mind, when you wear a VR headset, you can no longer see your actual controls, or a keyboard, or mouse. So your best option is HOTAS (Hands On Throttle And Stick) flying. Basically, if you can do everything you need to do in the sim without removing your hands from the joystick and throttle, and if you can memorize all the button assignments, then that sim could be a good option for VR.
If you fly airliners, civil training airplanes, or helicopters you will be performing a lot of tasks where you need to reach out with your hand and touch the control panel. You will tune radios, adjust the GPS, set the navigation headings, set the autopilot, and more. As of right now, it’s really difficult to do these tasks in VR so traditional flight simulators are best for this type of flying. In traditional flight simulators we use actual retail switch panels, modified keyboards, a touch screen, a real checklist, a real aviation map, or all of these things. I think it will stay that way for a long time and more people will be building flight simulator cockpit.
7. How looks your simulator, can you share some pictures with us?
Sure, here are pictures from four very different DIY flight simulators (see the slideshow gallery on this page).
The DIY Side Joystick Frame is one of my most popular projects, and it’s very versatile. Even though I published this project 6 years ago, the design has stood the test of time. Yet, as great as it is, I have recently made a few modifications to the design that you might find helpful for your project. Read on for 5 Modifications for a DIY HOTAS Chair for Virtual Reality and More.
A True HOTAS for your Flight Sim
The DIY Side Joystick Frame, Item #F311, makes a true HOTAS (Hands On Throttle And Stick) possible for your flight simulator because the project also includes rudder pedals. True pilots use rudder pedals, not joystick twisty grips so always remember that. I originally envisioned the F311 as useful primarily for jet fighter simulators, but now, many customers are using it for space sims like Elite Dangerous and Star Citizen.
Use the F311 in combination with a Virtual Reality headset. Remember, when you wear a VR headset, you can’t see your keyboard any more and any functions you have assigned to your keyboard keys are literally out of sight. You can also use the F311 with a traditional multi-monitor setup like the DIY Deluxe Desktop Flight Sim (Item D250). The F311 is delightfully versatile and useful. Use these 5 Modifications for a DIY HOTAS Chair to update the F311.
5 Modifications for a DIY HOTAS Chair
I made five main modifications to adapt the F311 Side Joystick Frame for my current requirements. None of these modifications are difficult. If you can build the F311 in the first place, you can certainly make these modifications or include these changes during the initial build.
1. Wider Side Stand Platforms
First of all, I installed wider side stand platforms, cut from 1×8 boards. To be clear, the PVC pipe side stands did not change, just the the boards that attach to the top of the stands. I topped the side stands with 1×8 boards, 12″ long. The wider boards give you room for a trackball mouse next to the joystick and give you room next to the throttle to set down your phone or whatever. Most importantly, you can place the controls in a more ergonomic location. This means placing the joystick and throttle in line with the chair’s arm rests. This is so important! Place the joystick and throttle so that your arms sit straight on the chair’s arm rests. This will allow you to fly comfortably for hours.
In addition, I attached the joystick and throttle with wood screws instead of Velcro. I also trimmed the inside corners of the 1×8 boards by 1″ and sanded the edges so my legs wouldn’t get caught on the corners.
2. Longer floor boards
I use the Saitek Pro Flight Cessna Rudder Pedals, and I really like them, but they have to be positioned further away from the pilot. The rudder pedals attach to the Floor Boards with Velcro, but the original boards were too short. Therefore, I replaced them with two 1×6 boards, 22″ long. You might not need to make this change for your rudder pedals.
3. Raised center stabilizer
I also raised the center stabilizer bar to allow room for the Saitek Pro Flight Cessna Rudder Pedals. Specifically, the back of my ankles banged into the stabilizer bar, so I had to move it. It is now 6.5″ higher than it was before.
4. Self-drilling screws
I now use self-drilling screws in everything I build. Back in 2010 when I designed this project, I used Liquid Nails Project Glue to attach all the PVC pipes and fittings. This allowed for some cost-savings, but self-drilling screws are far superior. The screws allow for a simpler assembly with no overnight dry time. In addition, the screws create a much stronger frame. Lastly, you can remove the screws later if you decide to modify the frame. I absolutely recommend using 1/2″ self-drilling screws to build DIY Flight Sims from PVC pipe.
If you’ve already built the DIY Side Joystick Frame, Item F311, or if you haven’t built one yet, these 5 Modifications for a DIY HOTAS Chair can enhance your home flight simulator experience for years to come.
What you’re seeing here is Lockheed Martin Prepar3D with triple screens and more. The software is Prepar3D version 3.4, the DIY Deluxe Desktop Flight Sim, the DIY Side Joystick Frame, Air Manager is running the instruments on the 4th display. The installation of P3D was straightforward and you’re looking at a stock installation with no add-ons (yet).
The three main displays are inexpensive 32″ HDTVs connected to a single Nvidia GeForce mid-level graphics card. The system specs are at the end of this blog post.
P3D recognized the Saitek X52 Pro and properly assigned its functions, which was very nice. For other flight simulator programs, assigning the controls correctly is an awful awful chore, but not for P3D. This is the first flight simulator software I’ve ever seen that correctly identified rudder pedals and successfully assigned them to the correct function. Including the toe brakes. So, kudos to Lockheed Martin. They also build spaceships, by the way. Just so you know.
It’s easy to combine the DIY Side Joystick Frame, (item 311), with the Deluxe Desktop Flight Sim project. I’m using the Saitek Pro Flight Cessna rudder pedals. Great rudder pedals. I updated the drivers for my Saitek switch panels that enabled them to work with P3D. That was easy.
You’ll notice that nothing here is expensive or exotic… or even new. For example, I’m using a second-hand computer to display the flight instruments. The second computer is so old it’s running Windows Vista.
This is the big one! FlyInside FSX is an ambitious project to make Microsoft Flight Simulator X compatible with VR. Leap Motion is an infrared sensor that can detect the location and position of your hands, so you can see your hands in Virtual Reality. Put FlyInside and Leap Motion together and you can activate airplane switches with your hands in the FSX virtual cockpit! If that is difficult to imagine, here is a video that demonstrates it.
Disclaimer: I discovered it’s really difficult to take good screen shots in Virtual Reality for flight simulator, so for this article I borrowed representative pics from other sources. This has no impact on the validity of my findings.
FlyInside FSX is a rather new project and even though it didn’t work for me, I still think it’s important to support the developer. The first flight I tried was the simple default flight around Friday Harbor in a Piper Cub. It was pretty cool to look around in VR, as long as I didn’t move my head too fast. Virtual Reality works best when the images are rendered at 90 frames per second or more. The stock FSX can’t consistently provide fps nearly that fast, but FlyInside has a trick to get around that. Unfortunately, it didn’t work well enough. When I moved my head, the images lagged. Lagging equals motion sickness, remember that. When the images you see with your eyes do not match your head movement, you can get motion sickness very quickly. I’m not prone to motion sickness, so I was able to do a few takeoffs and landings without barfing, but the experience is not nearly as good as VR in other flight sim software. On the other hand, I found that it’s easier, and it feels more realistic to land an airplane in VR.
I tried to trim the airplane during flight, and that’s when it all went sour. Recall that I also used Leap Motion, so I could literally see my hands while flying in the virtual Piper Cub. This is supposed to give me the ability to manipulate controls and switches in the cockpit, much like it’s possible now with the mouse. I reached out to adjust the elevator trim and…. FSX crashed. I re-booted and tried the same thing again… another crash. And that’s it. After two crashes, I’m done.
Conclusion: support this project. I did, but I won’t use it again until it’s more reliable.
Combat in Elite Dangerous made me miss my old online squadron. I had never played War Thunder before, but it’s free to sign up so I enlisted and went back to World War 2 for the first time in several years. This game was much more menu-friendly to VR than DCS world was. I wasn’t familiar with War Thunder, so it took a while to get my controls and buttons assigned. Apparently, the game isn’t expecting many users to have rudder pedals, so that really throws it for a loop.
Once I had my controls set up, I launched into battle with my pathetic P-26 Peashooter (that’s how you start out). Even with my crappy plane, I had blast in War Thunder. I had a level of spatial orientation that I’ve never had before in a flight simulator. VR is a game changer for air combat because of the way I could look above, below, behind, and around the cockpit frame. Even though I was a rookie, most of the guys in the Arcade level don’t know anything about energy fighting so I was able to use that to my advantage and I leveled-up rather quickly, or at least I think I did. The flurry of levels and tokens and things are still a mystery to me.
War Thunder also has a Realistic mode that I tried, but I didn’t get my controls completely set up. A Saitek X-52 looks nothing like the controls you would have in a WW2 airplane, so this means I need to assign mixture, prop and some other functions to the knobs on the throttle, which I wasn’t all that excited about. I’m sure I’ll revisit that at some point.
I experienced my first strong physical reactions in Virtual Reality while playing War Thunder. My heart was pounding and I was sweating profusely during combat. I had to take breaks between sorties for my heart rate to come down and I pointed a fan at myself to cool off. This is serious fun!
Conclusion: I will only play War Thunder in VR. That’s how good it is.
Edit: the recent update of War Thunder failed because the sound no longer works. As a result, I won’t be playing this again until they fix it.
Matrix: Virtual Reality for Flight Simulator
Here is a summary of my findings with the flight sim software. Read on for financial and physical implications.
Virtual Reality: Financial Issues
The FlyInside developer recommends FSX Steam because it works better with FlyInside for some reason. I would like to try it, but I’m simply out of money. Virtual Reality costs real money. It is expensive. The Oculus Rift headset was over $600 with shipping, but I also needed a new computer to run it. I shopped smart but still spent over $1160 on a new gaming computer (specs below) and that still wasn’t enough. I’ll need to spend another $600 on a new graphics card before I can run the Rift at high definition 1080p. I bought Leap Motion on sale, but I can’t use it because of the problem with FlyInside FSX. I couldn’t afford to even try Aerofly FS2.
Notice that Virtual Reality did best with games, not simulators. Flight Simulator X was not usable and X-plane doesn’t support VR at all. Think long and hard about spending your money. VR is for gaming, not for simulating.
Virtual Reality: Physical Issues
You can’t wear glasses with the Oculus Rift. Well, technically you can, there is an awkward way to do it, but the headset will push the glasses against your face, which is very uncomfortable. Realistically, it’s contact lenses or nothing and that’s just the way it is right now. Maybe there will be helpful remedies in the future.
Motion sickness is a risk if you’re prone to motion sickness in general. If you typically feel nauseous in a plane or boat or car, you may feel the same in VR. Furthermore, if your computer can’t render VR in 60 frames per second (at least), you may feel nauseous in Virtual Reality for flight simulator. Luckily, motion sickness if easily remedied because you can just take a break and remove the headset for a while.
Pounding heart, sweaty armpits, residual headset heat, dry eyes. Clinical flight simulator research shows that pilots start to have involuntary physical responses to professional flight simulators when the images are rendered higher than 60 fps. In other words, their palms sweat. In my experience, my heart was pounding, I was breathing heavy, and my whole body sweat during combat in War Thunder. I took breaks between sorties to calm down, it was that intense. Sometimes my eyes would get dry in VR because I probably don’t blink as much as I should. Lastly, the Oculus Rift headset gets warm during use, so I needed a fan blowing on me to help me stay comfortable. That’s unusual for me, I typically have a lower than average body temperature.
Virtual Reality: Emotional Responses
I didn’t expect to have any emotional reactions to VR but I did. Virtual Reality for flight simulator wasn’t the only thing I tried, I also looked at some 360 degree videos. When you view these videos, it’s like you are inside the video and you can turn any direction to see what’s happening around you. Several little clips are included in the Oculus library.
One clip showed a young couple on a gondola ride in Venice. The camera was in the boat with them so it seemed like I was riding along with them too. It was a vacation I can’t afford in a city I’ll probably never visit and yet, I was there… virtually.
Another 360 video clip showed a family in Asia somewhere and their house was basically a little shack on stilts in the water and again, I was there… virtually. I was reminded of how lucky I am to even experience VR because my computer and VR headset probably cost more than their annual income.
Is a Virtual Reality headset worth the money if you are a flight simulator enthusiast? It depends on the type of simulating you do. In this article I’ll tell you about my first month with the Oculus Rift headset and Virtual Reality for Flight Simulators. I’ll discuss the four different flight sim platforms I tried with VR and also the physical and financial impacts of these experiments.
The first thing you should know is this: Virtual Reality is a game changer. Accent on the word “game.” I’ll go into more detail in a moment.
The second thing you should know: Virtual Reality costs real money, plenty of it.
Upgrade the Gear
I started my maiden voyage into the world of Virtual Reality for flight simulators a few months ago when I ordered an Oculus Rift. They were on backorder at the time, but even so, I received mine a full month before I expected to. VR headsets need substantial processing power to work effectively, so I bought a new computer at Best Buy and the specs are at the end of this article. I also bought a Leap Motion sensor while it was on sale so I could experiment with FlyInside FSX. If none of that means anything to you, don’t worry, I’ll come back to that in a minute.
Upgrade the Controls
I also upgraded an F311 Side-joystick HOTASby making the control platforms wider to better align the controls with the armrests of my chair. Furthermore, I added a trackball mouse and a drink holder (don’t fly thirsty). I also raised the reinforcement bar so I could use my favorite rudder pedals and attached all fittings with self drilling screws. I used this F311 frame with great success, I can’t VR without it.
For these experiments, I said goodbye to my trusty Saitek switch panels and keyboard mods… you can’t see them while wearing a VR headset. Now, come with me as we explore Virtual Reality for flight simulators…
My first flight in VR was in space and it was breathtaking but just a bit disappointing. Everything worked correctly, but I found that my graphics card could not power the Oculus Rift at 1080p, so I’m temporarily stuck at 768 until I can afford a more powerful graphics card. Even so… I said the experience is breathtaking and it is. You have stereoscopic vision in VR, just like you have in real life. Your left eye and your right eye see slightly offset views of each object, so this is what makes close objects look close and far objects look far away. In Elite Dangerous, this means I could for the first time, sense the size of the spaceship’s flight deck. I could look down at my arms in the game and see how close they are and then look outside and comprehend the enormity of the space station.
The game isn’t on a screen any more, it’s all around you. You’re inside the game. This is most obvious in combat because you can look up and back and over your shoulder at your enemy. You also should be fully HOTAS so all aircraft functions are assigned to the buttons on your joystick and throttle because it’s too inconvenient to use the keyboard. That means you also have to memorize all your button assignments. One of the great limitations of VR is that you can no longer see real-world buttons and switches. However, you can use Voice Attack to simply speak commands to your spaceship. For example, you can verbally tell it to extend landing gear, and that is perfectly plausible in this futuristic environment.
Conclusion: from now on, I will only play Elite Dangerous in Virtual Reality. That’s how good it is.
I couldn’t wait to try DCS World with the Oculus Rift, but unfortunately it didn’t go as smoothly as Elite Dangerous. First of all, the DCS menus were very difficult to use and in some cases, they just didn’t work at all. It was a time-consuming chore just to set up my Saitek X-52 HOTAS controls and rudder pedals. I flew several tutorial missions, but many of the lesson tasks required the use of keyboard commands, so I had to put my keyboard on my lap. I could kind of see the keyboard in the gap between the bottom of the Rift headset and my cheek, but this is not a reasonable option. Perhaps I could have assigned specific functions to HOTAS buttons, but there are so many of them and, again, navigating the DCS controls menu in VR is a crapshoot at best.
Disclaimer: it’s really difficult to take screen shots in Virtual Reality for flight simulators, so for this article I borrowed representative pics from other sources. This has no impact on the validity of my findings.
I appreciate the realism of DCS World, but lifting the Rift headset repeatedly to look at a paper checklist or the keyboard is a no-go. I applaud the young man in this video for diligently looking at his checklist, but every time he lifts the headset with one hand, the Rift lenses come in contact with his forehead. Be very cautious with the Rift lenses, they are delicate! Repeated exposure to sweat or hair or grease can damage the Oculus Rift lenses.
DCS World looks astonishingly great, even if it’s not fully usable. One of the aircraft I selected was the TF-51 Mustang and I really felt how cramped the cockpit is. I also tried a few landings and found them to be a more realistic experience in VR than my previous experience. Instrumentation was a little hard to read because of the lower resolution required of my graphics card. I would love to try all of this again at 1080p.
Conclusion: I won’t play DCS World again in VR until there is some work around or fix for the menus.
It’s easy to mount the Oculus Rift sensor on a tripod.
The Oculus Rift sensor is designed to sit on a desk or table, but sometimes it is much more convenient to mount the sensor on a tripod. For example, my flight simulator does not have a table sitting in front of but this tripod works nicely. It’s easy to mount the sensor on a tripod, I’ll show you how.
This is an old, spare tripod that I wasn’t using any more. You can see where I repaired the crank many years ago. I’ll use this tripod for my Oculus Rift now.
Quick note: You’ll notice I covered the Rift sensor. I did that because the sensor is quite sensitive to bright light and I’m using some pretty bright lights to film this video. You probably won’t need to worry about covering the sensor like I did.
If you currently use the Oculus Rift with the sensor sitting on a desk, take a moment to measure the distance from the floor to the sensor. Unclip the wire and let’s take a look at the base of the stand. The base will not unscrew here… look farther up toward the sensor. This is where it unscrews. That’s actually a lot better for us than unscrewing the base. Remove the quick release plate from the tripod. Screw the sensor onto the plate. The threads should match perfectly. Both the sensor and the plate have standard quarter-twenty threads. Return the quick release plate to the tripod. Adjust the height so the sensor is the same distance from the floor as it was before. If you need to re-calibrate the location of the sensor, you can do that in the Oculus Rift software. I recommend using some small strips of Velcro to attach the wire to the tripod.
Simply position the sensor so it points at your headset and take off ! ! !
My joystick, throttle and rudder pedals are secured in place with a framework of PVC pipes and lumber. It is item F311, the Side Joystick Frame and I can help you build one for yourself.