Traction Hobby Founder II KM4 1/8 Scale 4WD/2WD RC Crawler Gate Bridge Edition
Beyond the Trail: The 1/8 Scale Crawler King
Welcome to the big leagues. The Traction Hobby Founder II (Cragsman KM4) is a massive 1/8 scale crawler that redefines what is possible on the trail. Weighing in at over 6kg, this isn't just a larger version of a 1/10 truck; it's a completely different beast designed for extreme terrain and unmatched presence.
Featuring Portal Axles (Gate Bridge), remote locking differentials, and a switchable 2WD/4WD system, the Founder II offers a level of technical control that serious crawlers demand. Whether you are conquering technical rock gardens or exploring deep mud pits, this machine delivers power, scale realism, and mechanical sophistication in one giant package.
Why Choose the Founder II KM4?
1. Massive 1/8 Scale Dominance
Size matters. The 1/8 scale chassis provides a longer wheelbase (374mm) and wider track, allowing you to bridge gaps and climb obstacles that would swallow smaller trucks. The sheer weight and size give it realistic suspension compression and tire deformation that looks incredible in motion.
2. Ultimate Traction Control
You are in total command. The Founder II features Remote Locking Front and Rear Differentials. Lock them for maximum grip on rocks, or unlock them for tighter turning circles. Furthermore, the Partition Transmission System allows you to switch between 2WD and 4WD remotely from the transmitter, letting you drift in 2WD or crawl in 4WD.
3. Portal Axles & Brass Weights
Clearance is key. The KM4 "Gate Bridge" Edition utilizes portal axles to raise the differential pumpkin, providing exceptional ground clearance. The axles are reinforced with billet aluminum and come with added brass weights to lower the center of gravity for superior climbing stability.
4. Anti-Torque Twist Design
The Reverse Transmission Function counteracts torque twist—the tendency for the chassis to lean under power. This keeps the truck level and stable during steep climbs, ensuring all four wheels stay planted on the ground.
Technical Highlights: Engineering Excellence
- 2-Speed Transmission: Switch between High and Low gears remotely. Low gear (ratio 3.0) provides immense torque for technical crawling, while high gear (ratio 1.7) offers wheel speed for hill climbs and trail running.
- Premium Materials: The chassis is a multi-connection formed steel frame with CNC Billet Aluminum side plates. The gears (except the spur) are all metal, ensuring durability under the stress of a 6kg vehicle.
- Mark Ma Tires: Rolls on massive 2.6-inch Billet Aluminum Wheels wrapped in Mark Ma authorized super soft tires (5.3x2.2 inches). These tires offer incredible grip and sidewall flex.
- Advanced Electronics: Comes with a HobbyWing WP-860 60A Waterproof ESC, an RS550 28T brushed motor, and a custom FlySky GT5 6-Channel Transmitter to control all the specialized functions.
Specifications
- Model: Traction Hobby Founder II (Cragsman KM4)
- Scale: 1/8 Large Scale
- Drive System: 2WD/4WD Switchable
- Axles: Portal Axles (Gate Bridge) with Brass Weights
- Transmission: 2-Speed (High/Low) + Reverse Rotation
- Differentials: Remote Locking (Front & Rear)
- Motor: RS550 28T Brushed Crawler Motor
- ESC: HobbyWing WP-860 Dual Mode 60A (Waterproof)
- Servo: 20kg Steering + 3x 3kg Micro Servos (Shift/Diff/2WD-4WD)
- Wheelbase: 374mm
- Ground Clearance: 55mm (Axle) / 85mm (Chassis)
- Approach/Departure Angle: 65° / 49°
- Dimensions: 63.2cm (L) x 31.5cm (W) x 30.7cm (H)
- Weight: 6.1kg
- Radio: FlySky GT5 6-Channel
- Required to Run: 3S 11.1V LiPo Battery & Charger.
Usage Scenario: The Rock Garden
It’s a Sunday morning. You take the massive Founder II to a challenging rock garden. You switch to 4WD Low Range and lock both differentials. The 20kg steering servo turns the huge 2.6-inch tires 45 degrees, biting into the rock face.
The truck crawls up a vertical ledge, the brass weights keeping the nose down. At the top, you switch to 2WD High Range, unlocking the rear diff, and do a burnout in the dirt to celebrate. This is the pinnacle of crawler versatility.
Customer Support
This is a professional-grade crawler. For setup advice, spare parts, or technical support, please contact our team: service@helloworld7.com
Delivery
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