The Serpent 989E Viper is the latest Electric version of the 989. Electric racing has developed big time, the possible power is huge. Especially in the popular dragster class in the US the power going through the transmission is extreme. The 989E is designed to take care of that power and put it down as effective as possible. The 989E is based on the ultra-successful 989 gas racer and shares it’s suspension, shocks and quite a lot of other features like the chassis plate or the driveshafts
Power delivery starts with the batteries.
We made room for serious power, 4S, 6S or more.
There is plenty of space for them, still they are very low in the car.
The batteries are mounted on a 2.5mm thick carbon plate.
They can be mounted in 3 different positions, changing the CG to alter the cars behaviour
The elevated speedo mounting plate
gives stiffness for the battery plates and creates also room for oversized
speedos. Even 1-5 scale speedos fit, a very popular choice in the dragster
racing scene
The topdeck is creating enough
stiffness for the whole chassis and carries the receiver, steering-servo and
belt tensioner
We also took care of the motor. We
created the room for a huge range of motor sizes.
Even long custom made motors have
enough room
To avoid unwanted torsional flex,
we created a “power box” around the motor, making this part of the chassis very
stiff. To achieve this, the motor mounting plate is connected to the
bearing-block of the spur gear shaft, to the chassis and to the mounting
bracket of the topdeck
Power is then transmitted further
with unbreakable, module 1 steel gears
Further down we changed to a super
wide, 10mm rear belt. The power then goes through the solid rear axle which
carries a n aluminium pulley as well
For the dragster lovers we also
offer a wheelie bar as an option.
Overview
of the main specs
Chassis :
Symmetrical chassis plate optimised flex and
torsion, in 7075 T6 aluminium, anodised and laser engraved.
Chamfered edges for
more ground clearance when cornering and countersunk holes.
Low big bore shocks :
Coated threaded shock bodies in high quality
aluminium.
Supersmooth x-ring / machined bushing package, to guide and seal the spring-steel piston rods.
Precision machined pistons included in 3 types.
Threaded pre-load shocknuts in alu with O-ring inside.
Light but strong nylon spring-cups.
Selected, matched and paired shock absorber springs with colour
coding.
Shocktower front & rear :
The 3mm carbon fibre front and rear shocktower
with 2 positions for the front and 3 positions for the rear for upper shock
mounting.
· Steering blocks :
Very strong composite steering blocks with 2 Ackermann positions, L and R use
the same.
The steering blocks feature inserts, which allow to change the
kingpin inclination to a leading or trailing position.
The steering blocks also
allow use of the optional carbon fibre aero disks to be mounted for less flex
and a more direct steering feel.
· Uprights :
Durable medium type composite uprights, which
seat the wheel-axles bearings.
The upright offers the mounting position for the
steel camber-rod with L/R threading.
Roll centre changes can be made on top of the upright
with shims.
The upright can be mounted with the optional carbon fibre aero
disks for more rear grip and straight line stability.
· Wheel axles and driveshaft :
The durable spring steel wheel axles combined
with spring steel driveshafts bring the power to the wheels.
· Pullies :
Precision moulded super-true pullies, which
feature holed sidewalls to let debris move out easier. Light and durabele.
· Belts :
Low friction Kevlar reinforced belts with fine
pitch. Longlasting and smooth.
· Decals :
The 989 includes one sheet with Serpent generic
logos and one with 989 logos. Decals are very thin material and come pre-cut.
