FlyFishRC FIFTY5 with Flash 2306 motors: Fly Light, Rip Fast!

As its product name suggests, the FIFTY5 frame is intended to be used with 5.5″ propellers, but, of course, it is also compatible with 5-inch ones. 5.5” props offer greater thrust and higher cruising speeds compared to 5” blades, making them more efficient for extended flight times and better suited for heavier builds. Whether you’re an experienced pilot seeking the next upgrade or a newcomer curious about the benefits of 5.5” setups, this review will cover everything you need to know about performance, durability, and value.

When choosing an FPV drone frame, one of the key decisions, besides prop size, is between the True X and DeadCat designs. Both geometries influence flight performance, camera mounting, FOV, and overall usage.

The FIFTY5 is the third FlyFish-RC frame reviewed on FirstQuadcopter, following the five-inch Volador VD5 and the larger six-inch Volador II VD6. While both my Voladors have straight front arms with a clean camera view, the 55 features an “X” shape symmetrical arm layout that improves stability, agility, and responsiveness in all directions.

FIFTY5 Flash 2306 FPV Bundle Kit review

Disclosure: I received this fame kit and FPV motors as part of a product review collaboration with FlyFish-RC. Although the products were offered for free, all opinions in this article remain my own, and the sponsor did not influence me. The company has been a trusted name in the FPV market for over five years, and it is dedicated to driving innovation and helping FPV pilots turn their flying dreams into reality!

In addition to the Fifty5 frame, FlyFish has other popular FPV frames such as the Volador (3.5/5/6″ and True-X/DeadCat), Tony (sub250G 5″), and Atlas (4″ long-range).

To be honest, the package with the FIFTY5 frameset and the five Flash 2306 motors came out of nowhere. I hadn’t spoken with FlyFishRC for over half a year, so I was surprised when I opened the package and saw the familiar FF-fish logo.

1. FlyFishRC FIFTY5 frame

As mentioned, the FIFTY5 adopts a true-X design appreciated for its best yaw performance, agility, and high-speed stability. FlyFish-RC Fifty5 frame kit comes in a compact box with many screw bags, two battery velcros (long and short), 3D printed TPU parts (motor protectors, front/rear bumpers, VTX antenna holder and GoPro mount), and bonus FF stickers. No user manual is included, just an exploded view of the frame. Each screw bag is labeled with its content (size x pieces), making the building part easier. Screws have already applied thread-locking glue, which is nice.

The Fifty5 frame comprises seven carbon fiber parts (4 arms, two bottom plates, and a top plate) and two CNC aluminum camera mounts/guards. Eight silicone vibration dampers are included (two pairs for 19mm cameras and two pairs for 20mm cameras, 15-60° angle adjustment).

It can accommodate two stacks. In the center, the main stack has 20 x 20mm and 30.5 x 30.5mm mounting patterns, and the VTX stack in the tail has 20 x 20mm and 25.5 x 25.5mm mounting points. The arms can accept 16 x 16mm motors. The included TPU antenna mount fits only single-antenna configurations. If you want to use dual-antenna VTXs, you can 3D print your mount—STL files are available here.

Fully assembled, including TPU parts, the FlyFish-RC FIFTY5 weighs about 130 grams. To be as light as possible, the carbon fiber parts are thinner than the ones in the Volador series. By comparison, the FIFTY5 has 5mm arms and a 2.5mm top plate, and the VD5 has a 6mm and 3mm top plate.

2. FlyFishRC Flash 2306 motors

The Flash 2306 motors have already been reviewed in my FlyFish-RC Volador VD5 article. These motors are perfect for 5-5″ FPV drones, and they have two KV options: 1750KV for 6S and 2550KV for 4S builds.

Pricing, availability, and bundle options

The FIFTY5 frame kit can be ordered from the manufacturer’s website at $52.80. There are also two combo kits with included motors. The FIFTY5 with four Flash 2306 motors (two KV options) and a set of HQ 5.5×3.5×3 propellers is priced at $119.99 and the FIFTY5 with four Sword 2207 motors (three KV options) at just $99.99. Spare frame parts (arms, top/bottom plates, TPU parts, CNC camera holder, and others) are available here.

FlyFishRC FIFTY5: Parts needed to complete

To complete the build, you will also need a flight controller, ESC (electronic speed controller), RX module (radio receiver), FPV system (5.8GHz analog, Walksnail, or DJI), and, of course, a LiPo battery.

For this project, I plan to use a powerful SEQURE H743 flight stack with 70A ESC and an Avatar HD Pro digital FPV kit. I expect the drone’s full weight to be around 200-220gr without a battery. Additionally, I recommend using a drone finder buzzer. FlyFishRC recommends using HQ 5.5×3.5×3 propellers for the best performance.

Let’s build it!

Many seasoned DIY enthusiasts argue that if an FPV frame can’t be assembled using an exploded view, it’s overly complex and needs redesigning. Following FlyFish-RC’s PDF guide (available here) and GBoni FPV’s video tutorial, I assembled the Fifty5 frame in just 30 minutes. The labeled screw bags helped a lot, making the process straightforward. Don’t worry if, after finishing the build, you are left with a couple of spare screws and parts—they are included for different setups. Required tools and accessories:

• 1.5mm, 2mm, and 2.5mm hex keys
• A mini Phillips head screwdriver
• Cutting pliers
• Digital Multimeter
• Decent soldering iron with flux and tin
• Some heat shrink tubes, Zip ties, and cloth tape

[embedded content]

You Can Trust Our Reviews!

Since 2014, FirstQuadcopter has reviewed, thoroughly tested, and rated hundreds of products, including drones, gimbals, power stations, action cameras, 3D printers, video lights, and other high-tech gear to help you make better buying decisions.

We don’t do paid reviews or agree to affiliate links. All products are tested fairly and equally, and if anything changes over time, I will update the written reviews.

As always, if you found this review helpful, don’t forget to like, share, comment, and bookmark for more content like this!

Merry Christmas and a Happy New Year to all our readers!