Serpent Viper 990E 4wd 1/8 EP (SER904006)

The Serpent Viper 990E is the successor of the successful 988E/989E. 

We have spent a lot of testing and research to improve the former electric powered 1-8 platforms. 

We put a lot of emphasis on the flex characteristic since that showed very promising results. 

On top of that we improved weight, weight distribution and ease of maintenance. 

A lot of the development went into the transmission. 

The goal was to have a bullet-proved, yet very free transmission

New key features

The ultra-narrow chassis is milled down to allow the lowest possible mounting of the batteries plate as well as improving the overall flex characteristics.

The central part of the chassis features 3 NACA ducts for the cooling of the speedo as well as the motor

The motor has been put as low as possible by machining the chassis underneath it. This improves the centre of gravity as well as the cooling from the bottom.

The rear of the chassis has a slot. This has become a very important feature of the Nitro 990. It has to do with adjustable flex.
It also carries 2 steel countersunk screws that act as a counterpart of the down-stop screws. This helps to keep the down-stop more accurate and consistent

The rear end is completely new. It features a new design to allow an re-active toe-change as well as avoid any binding at all!

By changing the position of the link the amount of toe-gain under compression can be adjusted. The position shown is the “neutral” position.

The left and right interchangeable upper arms are mounted with 3 position nylon suspension pin inserts. The 3 position inserts allow camber-change adjustments and are held in place by the anodized aluminium top brackets. Below the top brackets, spacers can be used to change their angle or height. Caster is adjusted with clips on the upper pivot pins. The same clips are also used on the lower pivot pins to change wheelbase.

The black anodized aluminium front axle has Japan made one-way bearings. Spring steel drive cups connect to the long and thin spring-steel drive shafts with CVD system. The ball raced spring steel wheel axles have aluminium quick-change levers. The open front end design allows for very fast and easy removal of the front axle and driveline parts.

The central mounted seervosaver allows easy and fast Ackermann adjustment. The servosaver features a top mounted insert which can be used in 3 positions. Another 2 Ackermann positions are available on the steering blocks.

The rear floating body mount which is mounted on the up-rights with 2 arms is centred by a carbon-fibre and steel guider. The mount has 4 positions on each side to choose from, depending on body shell used and traction available. The threaded holes on the end of the body mount give the option to add further body-supports.

Optionals

A large selection of optional parts is available to even further improve performance, speed, weight and looks.