Scale Realism Meets Advanced Tech:

Exploring the FL500 BO105, EC135, and UH-1 Huey Helicopters

If you’re an RC aviation enthusiast craving the perfect blend of scale realism and cutting-edge technology, the FL500 series is built to impress. These big helicopter models capture that excitement in stunning detail, offering adult hobbyists the chance to fly stunning replicas of legendary aircraft. Whether you dream of the combat-proven UH-1 Huey, the versatile EC135, or the agile BO105, these 500-class models bring authenticity and advanced flight control to your fingertips. Let’s dive into how these helicopters turn your backyard into an open sky of possibilities.

Mode 1 or Mode 2: Pick Your Flight Style

The FL500 BO105, EC135, and UH-1 Huey are available in both MODE 1 and MODE 2 configurations to suit your personal flying style. Here’s a quick breakdown to help you choose the right setup:

MODE 1 (Left-Hand Throttle): Throttle/Pitch control is on the left stick (vertical axis), and Rudder control is on the left stick (horizontal axis). This mode is commonly favored in Europe and parts of Asia, especially by fixed-wing pilots transitioning to helicopters.

MODE 2 (Right-Hand Throttle): Throttle/Pitch control is on the right stick (vertical axis), with Rudder on the left stick (horizontal axis). This is the standard configuration in North America and is widely considered more intuitive for flying collective-pitch helicopters.

Heli Legends: The Stories Behind FL500

The FL500 series pays tribute to some of the most iconic helicopters in aviation history, respectively symbolizing the technological leap from power innovation (Huey), structural breakthrough (BO105), mission customization (EC135). Let’s take a closer look at the remarkable stories behind these historic helicopters.

The B0105 is a 5-or 6-seat twin-engine light multi-purpose helicopter developed and manufactured by the former German company Bolkow (which was merged into the former MBB: Messerschmitt-Bolkow-Blohm, and is now part of Eurocopter Germany). The B0105 was the first twin-engine light helicopter to enter commercial operation, and has been widely used in both military and civil markets. Its main variants include BO105C, -CB, -D, -CBS, -L, -M, and -LS. As of January 1995, a total of 1,329 units of various B0105 variants had been delivered, with users in more than 40 countries including Mexico, Spain, and Sweden.

The EC135 is a twin-engine civilian helicopter manufactured by Airbus Helicopters (formerly Eurocopter SA), which is capable of flying with instrument flight rules. The EC135 helicopter entered service in 1996 and more than a thousand aircraft have been produced. It is widely used in the field of policing and first aid, as well as for carrying out transportation tasks. By 2013, more than 500 EC135s were providing helicopter emergency medical services worldwide. Also, the company produced the combat version of the EC135, the military Eurocopter EC635.

The Bell UH-1 Iroquois (nicknamed"Huey") is a military helicopter designed and built by Bell Helicopter, which first flew in 1956. The UH-1 helicopter is designed for multi-purpose, from supply operations to attack missions. It is the first helicopter equipped with a turboshaft engine in the Us military. There are many modified models of UH-1. In addition to being used by the US armed forces, it is also exported  to many countries and regions in the United States, Europe, Australia, and Asia. The total number of production is more than 16,000, and it is one of the most produced helicopters in the world.

L7 Flight Controller: Power Behind Precision

In addition to high-precision CNC DFC rotor head and realistic scale details, the FL500 series are equipped with FLISHRC’s powerful L7 Flight Controller. Driven by a high-speed H7 processor running at 480MHz—four times faster than conventional systems—the L7 delivers rapid data processing, precise flight control, and outstanding stability. With support for multi-satellite positioning and advanced flight features like altitude hold and self-stabilization, the L7 ensures smooth, responsive performance for both beginners and experienced pilots.

L7 Features:
.GPS self-stabilization mode
.Attitude mode
.6G mode
.Low battery return
.One-key return
.Out of control return
.Bluetooth parameter adjustment-data transmission
.Beidou, GPS, Galileo and QZSS satellite four-mode positioning

 Pre-Order Tips: What You Should Know

All helicopters are set up and debugged before shipment. After that, a test flight will be conducted, and only when the flight is confirmed to be problem-free will they be shipped out. 

For transportation safety, the helicopter's shell and mechanical frame will be disassembled and shipped in two separate packages. After receiving the goods, customers need to assemble the shell and mechanical frame by themselves, tighten several fixing screws, and also paste some decorative parts by themselves. The assembly process is not difficult. Customer service staff will provide assembly tutorials and remote technical guidance.

The FL500 series comes in Ready-to-Fly (RTF) version and is divided into Mode 1 and Mode 2—be sure to select the correct mode before placing your order. The RTF package includes 1 helicopter, 1 transmitter, 1 receiver, 1 battery, 1 charger, and a set of screwdrivers. Additionally, the BO105 model features a detailed cockpit for added scale realism.

 Ready to Fly? Get Yours at RTRhobby

Precision engineering, realistic design, and the latest flight tech—all wrapped up in the FL500 series. There’s never been a better time to elevate your hobby. Pre-orders are now open at RTRhobby, so you can be part of the first wave of pilots to experience the next level of scale detail and flight precision. Don’t wait—order your FL500 model now and get ready for lift-off!

https://rtrhobby.com/search?q=FL500&options%5Bprefix%5D=last&type=product