{"id":24241,"date":"2026-11-06T09:00:00","date_gmt":"2026-11-06T09:00:00","guid":{"rendered":"https:\/\/dronefpvshop.com\/?p=24241"},"modified":"2026-11-01T11:57:27","modified_gmt":"2026-11-01T11:57:27","slug":"chasis-fpv","status":"publish","type":"post","link":"https:\/\/dronefpvshop.com\/en\/chasis-fpv\/","title":{"rendered":"FPV frames: 7 keys to choosing the right one for your drone"},"content":{"rendered":"

Choosing an FPV frame is one of the first big decisions when you build a drone. Everything else bolts onto it: motors, electronics, camera, antennas and battery. If the FPV frame does not suit those parts, or the way you fly, you will notice it on every flight and at every repair.<\/p>\n

The good news is that you do not need to know everything. In this guide we go through the 7 keys that decide whether an FPV frame will work for you: size, geometry, arm thickness, stack mounting, motor mounting, room for camera and video, and ease of repair. At the end you will find a table by flying style and the most common questions.<\/p>\n

What an FPV frame really does<\/h2>\n

An FPV frame is the structure that holds the drone together and protects it in crashes. It is usually made of carbon fibre plates joined with screws and standoffs. The bottom plate and arms take almost all the punishment, while the top plate closes the assembly and holds the battery.<\/p>\n

But the frame also affects how the drone flies. Its stiffness changes the vibrations that reach the flight controller, its weight adds to everything the motors carry, and its shape changes how the drone responds on each axis. That is why two drones with the same electronics can feel very different on different frames.<\/p>\n

Key 1: the size of the FPV frame<\/h2>\n

When someone talks about a 5-inch FPV frame, they mean the largest prop it takes, not the size of the frame itself. That is the first figure to decide, because motors, battery and much of the build cost depend on it.<\/p>\n

The other number you will see is the wheelbase. It is the diagonal distance between the centres of two opposite motors, in millimetres. On a 5-inch it is usually around 225 mm, although it varies by design. Do not compare this figure alone: a frame can have the same diagonal and spread its arms differently.<\/p>\n

\"Distancia<\/figure>\n

Which FPV frame size suits you<\/h3>\n

If you have no very specific idea, 5-inch is the most sensible starting point. It is the size with the most parts available, the most community information and the most room for freestyle or racing. It is also the easiest to repair, because nearly everything is easy to find.<\/p>\n

Below that are toothpicks and micros of 2.5 and 3 inches, light and more discreet, designed to fly close and cause less damage. Above it, 6, 7 and 8-inch frames chase flight time and range. They pay for that reach with more expensive motors, batteries and props, and less agility.<\/p>\n

Key 2: geometry<\/h2>\n

Geometry is how the arms are spread around the centre of the drone. It is the key you feel most in flight and the one that causes the most confusion, because every manufacturer gives it its own name. In the image, from left to right, are the four most common shapes: X, stretched X, deadcat and H.<\/p>\n

\"Cuatro<\/figure>\n

X: the balance<\/h3>\n

In an X, all four motors sit at the same distance from the centre. The drone responds in a similar way on pitch and roll, which freestyle pilots and beginners appreciate. If in doubt, it is the safest choice.<\/p>\n

Stretched X: made for racing<\/h3>\n

A stretched X lengthens the drone from front to back. That gives more control on pitch, the axis used most in a race when going through gates and changing height. In exchange, the drone feels less even across its axes.<\/p>\n

Deadcat: props out of shot<\/h3>\n

In a deadcat, the front arms spread outwards so the props stay out of the image. It is very common when you film with an action camera and want a clean shot. The weight is a little less centred, so tuning can take more work.<\/p>\n

H: room and strength<\/h3>\n

An H places the arms in parallel with a longer body. It leaves plenty of room for electronics and holds up well, so it mostly appears in designs made for hard freestyle or for carrying more gear. It usually weighs a little more than an X of the same size.<\/p>\n

Key 3: the arms and material of the FPV frame<\/h2>\n

The arms are the first thing to break. On a 5-inch FPV frame you will normally find arms of 4, 5 or 6 mm. With 4 mm you save weight, which matters in racing. With 5 mm you get a good middle ground. With 6 mm you gain strength for freestyle and for the crashes of someone who is learning.<\/p>\n

\"Grosor<\/figure>\n

Thickness is not everything. The quality of the carbon fibre, the shape of the arm and whether the edges are chamfered also count. A chamfered edge protects wires and reduces the risk of the fibre cutting them. If a frame arrives with sharp edges, you can sand them carefully while wearing a mask, because carbon dust should not be breathed in.<\/p>\n

Remember too that carbon fibre conducts electricity. No bare wire or electronics pad should touch the frame, because a short circuit can burn out a part as soon as you plug in the battery. Check carefully before the first power-up.<\/p>\n

Key 4: stack mounting<\/h2>\n

The stack is the flight controller and ESC assembly that sits in the middle of the drone. It bolts through four holes, and the spacing between them must match the frame. The usual patterns are 30.5 x 30.5 mm, 25.5 x 25.5 mm and 20 x 20 mm. This is where most wrong purchases happen.<\/p>\n

\"Medidas<\/figure>\n

Before buying, check which stack you are going to use or already have. Many 5-inch FPV frames take more than one pattern, but not all. Also check the free height between the plates: a tall stack, with a large capacitor or a receiver on top, may not fit even if the holes line up.<\/p>\n

Key 5: motor mounting<\/h2>\n

Each arm ends in four motor holes. The 22xx and 23xx motors, the most common on 5-inch, usually use 16 x 16 mm with M3 screws. Larger motors, such as 28xx, usually go to 19 x 19 mm. On small sizes, 12 x 12 mm and 9 x 9 mm with M2 screws are common.<\/p>\n

\"Medidas<\/figure>\n

Be very careful with screw length. A screw that is too long passes through the arm and touches the motor windings, which can ruin it on the first power-up. If you change frames, check whether the arms have a different thickness and use suitable screws. After tightening, turn the motor by hand: it should spin freely with no rubbing.<\/p>\n

Key 6: room for camera and video<\/h2>\n

An FPV frame designed for analogue does not always work for digital video. Cameras come in different widths, the most common being 19 mm, known as micro, and 14 mm, known as nano. Some frames include adapters and others take only one size, so check before choosing a camera.<\/p>\n

If you are going to fly digital video, also check where the video unit and its antenna go. These systems take up more room, produce more heat and need airflow. Frames prepared for them usually have dedicated mounts and cut-outs, and say so on their product page.<\/p>\n

Think about the action camera too, if you want to film. See whether there is room on top, whether the mount fits yours and how much weight it adds. With a camera on top, the drone becomes heavier at the front or on top, and that also changes how it responds in the air.<\/p>\n

Key 7: spares and ease of repair<\/h2>\n

In FPV, gear breaks, and that is not a failure: it is part of learning. That is why a good FPV frame is also one you can repair without rebuilding the whole drone. See whether the arms can be replaced one by one or come as a single piece, and check whether spares are available.<\/p>\n

Separate arms make replacement easier after a crash. One-piece designs tend to be stiffer and lighter, but if an arm snaps you will have to replace the whole plate. Neither option is always better: it depends on your priorities and how much you are willing to take apart.<\/p>\n

It also helps if the electronics are easy to reach. If you have to remove half a dozen screws to get to the flight controller or USB port, every adjustment becomes a job. An accessible port and an easily removed top plate save a lot of time on the workbench.<\/p>\n

FPV frame details that make a difference<\/h2>\n

With the seven keys you already know whether a frame fits. These other details rarely decide the purchase, but you notice them when you build the drone and when you use it every week.<\/p>\n

Battery on top or underneath<\/h3>\n

Most freestyle FPV frames carry the battery on top, where it is protected and easy to strap down. Some racing designs place it underneath to lower the centre of gravity and bring the weight closer to the line of the motors. Both options work. What matters is that the battery stays secure, with a strap in good condition and a non-slip pad, because a battery thrown off in a crash can be damaged and become dangerous.<\/p>\n

TPU parts and protection<\/h3>\n

Many frames include TPU printed parts, a flexible plastic that protects antennas, action cameras and arm tips. They weigh little, absorb part of the impact and are cheap to replace. If your frame does not come with them, you will probably find designs to print them, or someone in your flying group may be able to. Antennas benefit most from this protection, because a broken antenna can leave you without signal in mid-flight.<\/p>\n

Screws and standoffs<\/h3>\n

Screws work loose with vibration. A drop of medium-strength thread locker on screws going into metal helps prevent this, but do not use it on plastic parts because it can damage them. It is worth keeping spares of the same size, since one screw lost in the field can end a flying session. Aluminium standoffs also bend in hard crashes, so check them when you remove the top plate.<\/p>\n

Weight and stiffness of the FPV frame<\/h3>\n

A light FPV frame improves acceleration and flight time, but if it is too flexible, vibrations reach the flight controller and the drone flies worse. A stiff FPV frame usually gives a cleaner flight that is easier to tune. Compare weight only between frames of the same size, and check whether the figure includes screws, standoffs and TPU parts, because each manufacturer measures it in its own way. A few extra grams on the frame are rarely as noticeable as a heavier battery.<\/p>\n

What to do when your frame arrives<\/h3>\n

Before soldering anything, do a dry build of the frame. Offer up the stack, motors, camera and battery to see how the wires will sit and whether anything rubs. Check that the prop does not touch the arm or the neighbouring prop, and that there is room for the capacitor and receiver. Five minutes on this step saves redoing solder joints and shows you where each wire will run.<\/p>\n

Which FPV frame to choose for how you fly<\/h2>\n

With the seven keys clear, this table sums up where to start. These are general pointers, not fixed rules: what matters is that the FPV frame you choose fits the rest of your parts.<\/p>\n\n\n\n\n\n\n\n\n\n\n
How you fly<\/th>\nSize<\/th>\nGeometry<\/th>\nArms<\/th>\n<\/tr>\n<\/thead>\n
Getting started<\/td>\n5 inch<\/td>\nX<\/td>\n5 or 6 mm<\/td>\n<\/tr>\n
Freestyle<\/td>\n5 inch<\/td>\nX or H<\/td>\n5 or 6 mm<\/td>\n<\/tr>\n
Racing<\/td>\n5 inch<\/td>\nStretched X<\/td>\n4 or 5 mm<\/td>\n<\/tr>\n
Filming<\/td>\n5 inch<\/td>\nDeadcat<\/td>\n5 mm<\/td>\n<\/tr>\n
Long range<\/td>\n7 or 8 inch<\/td>\nX<\/td>\nDepends on the frame<\/td>\n<\/tr>\n
Flying close<\/td>\n2.5 or 3 inch<\/td>\nX<\/td>\nDepends on the frame<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Quick checklist before buying your FPV frame<\/h2>\n

Before paying, go through these points. It takes two minutes and can save you a return or a part that does not fit.<\/p>\n