The Serpent Project 4X RC touring gets updated for 2018 with a special EVO edition! Upgrades include a new vertical top deck for less tweak, a redesigned carbon fiber lower chassis with better flex characteristics, larger dampers with more oil volume, an updated motor mount with better flex control, linear pull rods system for improved steering, stronger front and rear brackets, improved center shaft holders and a bladeless front spool. Check out the full details and tons of pictures of the Serpent Project 4X EVO after the jump!
State of the art battery mounts made in aluminum and carbon fiber and allow positioning the battery more to the front or backing and securing it well in place. Shorty lipos can be placed centered, in front or rearward position of the Serpent 4X EVO.
Floating servo mount
The servo mount is a combination of a carbon brace and aluminum posts. The carbon brace is bolted to the central brace and does not touch the chassis to prevent any flex influence.
The Serpent Project 4X EVO ball raced aluminum steering system consists of an inversed lever system to better control the Ackermann setting. The angle difference between the inside and outside wheel is a lot more linear than in conventional designs.
In the front the 4X EVO features durable spring steel double joint cardan shafts, combined with the blade type spool. In the rear lightweight coated aluminum cvd style dog bones are used with durable spring steel wheel axles. Both front and rear wheel hexes are a lightweight aluminum design
Steering blocks / uprights
In the front and rear the same Serpent 4X steering blocks/uprights are in use. The pivot ball system allows for easy and quick set-up changes and works very smoothly. In the front there are 3 Ackermann positions and shimming below the steering rod can be used for fine tuning of the bump steer characteristics. In the rear the system allows to set Reactive Rear Steering. This RRS system allows for a change of toe-in while the suspension compresses and thus increases corner speed.
Wishbones / pull rods / rockers
The Serpent Project 4X EVO lower wishbones are the same front and rear and the same goes for the upper arms. The lower arm mounts of 2 short pivot pins and the mounts have a lot of space to play with wheelbase by using clips. The lower arms also feature 2 down stop screws front and rear.
The upper wishbones allow quick caster changes with clips and run on an easily removable long pivot pin.
Rocker and pull rods system
The pull rods connect to the upper arms and operate the ball raced aluminum rocker system which activates the dampening systems for heave and roll action. All track rods are made in coated lightweight and tough 7075 T6 aluminum. The pull rods are molded version and 5 fixed lengths are included: 19, 19.5, 20, 20,5 and 21, 20 is default.
Aluminum upper hinge pin holders and stiffeners
The Serpent 4X EVO assembly is split in 2 sections to allow for easy maintenance and change of settings. The inner top brace connects both sides and creates a very strong structure preventing tweak. The top brace is connected to the lower brackets with alu stiffeners. These stiffeners can be easily removed in case more flex is needed. The assembly rest on roll center spacers. To add additional shims for changed camber gain and roll enter is a simple and quick setting.
Bumpers and body mounts
In the front a strong bumper-set using a large size but light foam bumper which is sandwiched between the lower composite bumper and upper graphite holder. The flexible molded body posts with swivel-system go all through. Optional body height systems are available. In the rear the lower bumper will prevent damage to the rear of the 4X EVO and the molded body posts with swivel system mount on a thick and stiff carbon plate, which is part of the strong rear end assembly.
Project 4X EVO car design
The Project 4X EVO is a unique and innovative racing car. It’s very different design requires the driver to take time to learn the dynamics of the car and fully understand its features. Once understood, it is not more complicated than any other racing car.
The top deck consist of 2 vertical mounted carbon braces mounted to the front and rear brackets with 2 additional supports on the centerline. The additional supports can be used or not, as to influence flex / torsion. The top deck is an important feature to limit the tweak of the car in crashes.
Carbon fiber chassis in 2.0mm thickness. Countersunk holes and designed to have equal flex left to right. The screws to set ride height are adjusted from the bottom of the chassis with just one screw in front and one in the rear with a simple and effective mechanism to adjust the ride height.
In the Project 4X EVO the heave and roll of the car operate and are set independently. The front and rear end of the car are almost identical in design and share many of the same parts front and rear, so you need less different spares.
There is one heave damper in the front and one in the rear and they work in the same way. The heave damper is located just above the chassis to lower the center of gravity. Molded pull rods which are connected to the upper arms link to the rocker system. The rocker system is connected through a swivel unit to the heave damper and roll damper unit. The bigger heave damper now has more oil inside and works with foam for compensation. The shock springs are now larger in diameter and more effective. Different oils and springs can be used for setup work, influencing mainly bump and on-throttle/off-throttle transitions. It is easy to access from the bottom of the chassis. The ride height is set with a simple one screw setting in the chassis, both front and rear.
The roll damper unit consist of an oil body for dampening with a through shaft and has a small spring on each side. This unit controls the roll of the chassis; it works as an anti-roll bar. Different oils and springs can be used for setup work. The whole unit comes out after releasing just 2 screws. One can have complete roll damper assemblies ready to change settings in seconds.
Extremely low 7075 T6 aluminum motor mount which doubles up as connector for the midshaft holders, connection for the RRS system, holder for the aluminum stiffener and connector to the central brace, all-in one.
The nicely shaped gear differential features molded internal gears which makes it super smooth. The compact and light unit holds a good amount of oil to deliver consistent performance throughout the run. It is fast and easy to take out and re-mount the differential.
The coated aluminum front spool with lightened spring steel outdrives is a bladeless type which ensures superb handling and durability throughout the race. It is fast and easy to take out and re-mount the spool
The Project 4X transmission system consists of large diff and spool pullies and efficient low friction belts. The light center shaft pullies are durable coated aluminum units. The ball raced durable hollow spring steel mid shaft holds the 2 pullies as well as the spur in place. The assembly is super easy to build and maintain. The aluminum midshaft holders are same left and right.
- Wheel base: 254mm
- Track-width front: 190mm
- Track-width rear: 190mm
- Weight: 550 grams
- Part: 400031