FSR MODEL GT MAX FS33715 1/7 4WD 6S BRUSHLESS RC STREET CAR RTR W/ GYRO

FSR MODEL GT MAX FS33715 1/7 4WD 6S BRUSHLESS RC STREET CAR — RTR WITH GYRO

The FSR Model GT Max is a serious large-scale on-road platform built around 6S brushless power, full-time four-wheel drive and a low, wide GT chassis. At approximately 710 mm long and 350 mm wide, it has the size and stability needed for high-speed pavement runs while retaining the visual presence of a detailed modern GT machine. A Hobbywing 150A power system, dedicated mechanical brake servo, gyro-equipped four-channel radio and aerodynamic underbody separate it from ordinary RTR street cars.

This GASHEAD RC listing is for the 6S FS33715 configuration in Blue or Gray. FSR has also produced and advertised other Model GT versions with different 8S electronics. Those specifications are not interchangeable: never assume an 8S battery is safe for this 150A 6S configuration.

WHY THIS IS MORE THAN A BIG DRIFT CAR

The GT Max can be set up for controlled slides, but its core design is a high-speed 4WD road car. The long wheelbase, staggered road tires, low center of gravity, full-length aerodynamic floor and gyro assistance are aimed at keeping a large, powerful machine settled on smooth pavement. Call it a street basher, speed-run platform or drift-style GT depending on tires and setup—the hardware is built to do more than one parking-lot trick.

• True 1/7-scale footprint: approximately 710 × 350 × 200 mm for substantial road presence and high-speed stability.
• Full-time 4WD: distributes brushless power through the chassis for stronger launch traction and more predictable handling.
• 6S Hobbywing system: 150A waterproof brushless ESC paired with a 4274 brushless motor.
• Gyro-equipped radio: GT15N 2.4 GHz four-channel system with electronic steering assistance.
• Dual braking approach: normal electronic braking is supported by a dedicated 4 kg metal-gear brake servo and mechanical brake system.
• Large-scale steering hardware: 18 kg metal-gear steering servo.
• RTR assembly: vehicle electronics and radio system are installed; drive battery, charger and transmitter batteries are required.

6S BRUSHLESS POWER SYSTEM

The installed Hobbywing RTR 150A waterproof brushless ESC controls a 4274-size brushless motor. This combination is intended for a compatible 6S LiPo power system and provides the acceleration needed to move a car of this size without relying on an oversized, poorly matched power package. Active cooling around the motor and ESC helps manage heat, but temperature must still be checked during high-load runs—especially in hot weather, with tall gearing or on high-grip pavement.

Some seller literature advertises speeds around 95–100 km/h for the 6S platform under favorable conditions. Treat that as an optimized performance claim, not a guaranteed out-of-box result. Actual speed depends on battery discharge capability, gearing, tire condition, surface, temperature, vehicle setup and available run length. High-speed gearing increases motor and ESC load; more pinion is not free horsepower.

IMPORTANT 6S VS. 8S COMPATIBILITY NOTE

This product is identified and sold as the 6S version with a Hobbywing 150A ESC and 4274 motor. Other FSR Model GT listings may describe 8S packages using different electronics, motor sizes, gearing or chassis revisions. Do not connect an 8S pack to this vehicle unless the installed ESC label and the manufacturer documentation for the exact unit explicitly authorize it. Exceeding the rated voltage can destroy the ESC, damage the motor and create a lithium-battery fire risk.

Before purchasing a battery, verify the connector on the vehicle received, the battery-tray dimensions and the required cable arrangement. Production batches and regional packages can differ. Use a hard-case or otherwise properly protected hobby-grade LiPo with adequate discharge capability, and secure it tightly with the installed straps so it cannot move under braking.

FULL-TIME 4WD CHASSIS

The low chassis layout places the main drivetrain and electronics near the centerline for balanced response. Power is sent to all four wheels, giving the GT Max more launch grip and better stability than a comparable two-wheel-drive speed platform. The full-length molded undertray manages airflow and shields much of the driveline from ordinary road debris, while openings around the suspension allow the arms and steering components to move freely.

The chassis is promoted with a rigid aluminum foundation, aluminum bracing and CNC-style aluminum shock-tower hardware. Adjustable coil-over suspension and steering links allow alignment and ride-height tuning for the surface. This is an on-road machine: the low chassis and approximately 15 mm ground clearance demand clean pavement, not gravel, potholes or tall expansion joints.

GYRO-ASSISTED GT15N RADIO SYSTEM

The included GT15N 2.4 GHz four-channel transmitter works with the vehicle’s gyro stability system. The gyro detects unwanted rotation and applies corrective steering input to help the car track straighter under hard acceleration or recover from a slide. It is an aid, not an autopilot: excessive gyro gain can make the steering oscillate or fight deliberate driver input.

• Begin with low-to-moderate gyro gain.
• Set steering trim and mechanical alignment before increasing assistance.
• Confirm that the gyro corrects in the proper direction before driving.
• Reduce gain for high-grip cornering if the car feels nervous or resists turn-in.
• Published radio range is approximately 100 m under clear, interference-free conditions.

DEDICATED STEERING AND MECHANICAL BRAKE SERVOS

An 18 kg metal-gear servo handles steering loads from the wide front tires. A separate 4 kg metal-gear servo operates the mechanical braking hardware, supplementing the ESC’s electronic brake. This arrangement can provide a more physical, tunable braking feel, but the linkage must be adjusted correctly: excessive brake preload can create drag and heat, while too little travel reduces stopping force.

Before every speed session, lift the vehicle securely and confirm smooth steering, neutral throttle and brake release. The wheels should rotate freely at neutral. Any binding, unusual noise or persistent brake drag should be corrected before full-power operation.

STAGGERED ROAD TIRES AND HANDLING

The published front tire size is approximately 100 × 43 mm, while the rear is approximately 107 × 53 mm. The wider rear footprint complements the GT body and helps manage acceleration and braking loads. These are pavement-oriented tires; their performance and wear rate depend heavily on surface texture, temperature, alignment and whether the car is used for grip driving or sustained drifting.

High-speed tire safety matters. Inspect every tire for lifting glue joints, cuts, flat spots, deformation or excessive ballooning. Never stand in front of or beside a vehicle during a full-throttle bench test. Replace questionable tires as a complete matched pair or set appropriate to the gearing and intended speed.

AERODYNAMIC GT BODY

The factory-finished body uses a low nose, vented hood, side skirts, rear diffuser and wing to produce a modern high-downforce appearance. Blue and Gray variants use contrasting stripes and dark aerodynamic trim. Body clips provide quick chassis access, while the wide arches and staggered stance make the car look planted even at rest.

DIMENSIONS AND PUBLISHED SPECIFICATIONS

Brand / model	FSR Model GT Max / FS33715
Scale	1/7
Vehicle type	High-speed on-road GT / street RC
Assembly	RTR vehicle; battery and charger not included
Drivetrain	Full-time 4WD
Power specification	6S brushless
ESC	Hobbywing RTR 150A waterproof brushless ESC
Motor	Hobbywing 4274 brushless motor
Steering servo	18 kg metal gear
Brake servo	4 kg metal gear
Radio	GT15N 2.4 GHz, 4 channel, gyro-equipped
Published radio range	Approx. 100 m / 328 ft under ideal conditions
Length	710 mm / 27.9 in
Width	350 mm / 13.7 in
Height	200 mm / 7.8 in
Published wheelbase	Approx. 400–410 mm / 15.7–16.1 in; literature varies by measuring reference
Ground clearance	Approx. 15 mm / 0.6 in
Front tires	Approx. 100 × 43 mm
Rear tires	Approx. 107 × 53 mm
Colors in this listing	Blue or Gray

WHAT IS INCLUDED

• FSR Model GT Max FS33715 1/7 4WD 6S brushless RTR vehicle in the selected color
• Installed Hobbywing 150A brushless ESC
• Installed Hobbywing 4274 brushless motor
• Installed 18 kg metal-gear steering servo
• Installed 4 kg metal-gear brake servo
• GT15N 2.4 GHz four-channel transmitter with gyro system
• Basic tools and documentation supplied by the factory package

REQUIRED TO COMPLETE

• Compatible hobby-grade 6S LiPo battery system that fits the installed tray and matches the vehicle connector
• LiPo balance charger suitable for the selected battery
• Transmitter batteries as required by the included radio
• LiPo charging bag or other appropriate fire-resistant charging enclosure

Battery and charger are not included. Confirm physical dimensions, connector type and discharge capability before ordering a pack. Never force a connector, reverse polarity or bypass the balance lead during charging.

PRE-RUN CHECKLIST

1. Read the supplied vehicle, radio and ESC instructions.
2. Check wheel nuts, motor-mount hardware, suspension pins, steering links and body clips.
3. Inspect and secure the battery; keep wires away from the center drivetrain and gears.
4. Switch on the transmitter first, then the vehicle, and verify fail-safe operation.
5. Confirm steering direction, gyro correction direction, throttle neutral and mechanical brake release.
6. Start with conservative gearing and short passes while monitoring motor, ESC and battery temperature.
7. Use only a large, clean and controlled paved area with no pedestrians, traffic or loose debris.

SETUP DIRECTION

For high-speed grip driving, begin with minimal toe changes, moderate gyro gain and tires balanced and firmly glued. For drift-style use, reduce grip with an appropriate matched tire setup rather than forcing the stock road tires to overheat. Any change in tire diameter changes final gearing and load, so recheck temperatures after setup changes.

The separate brake servo adds adjustment options, but it also adds another system that must be inspected. Set enough travel for decisive braking without locking the mechanism at full command. A correctly adjusted car should roll freely at neutral and stop straight without steering pull.

GASHEAD RC VERDICT: The FS33715 is the sort of large-scale street machine that rewards mechanical discipline. Its 6S Hobbywing system, four-wheel drive, gyro and physical brake hardware give it serious potential, while the GT body and full undertray keep the package looking purposeful. Respect the voltage limit, set it up carefully and give it enough pavement—the GT Max is built to cover ground in a hurry.