Viper 977 EVO-2 1/8 GP 4wd Gaspowered toplevel racecar with 4wd, belt-drive, Centax true motion clutch, XLi-8 gearbox, flex-system front and back, brake on back axle, front one-ways, rear solid axle, ballraced anti-roll bars, low big bore shocks, slim buttocks pivots. A fully adjustable race chassis to the latest spec and technology. EVO-2 variation features new big bore shocks and the new tail geometry.
Serpent happens to be developing 1/8 scale onroad rc cars since 1977, formally as business since roughly 1980. That is over 35 many years of of battle and development experience combined !
The Serpent Viper-EVO-2 is the next step inside constant growth of this extremely demanding 1/8 scale rushing class, the pinnacle of rc car race. The Viper 977-EVO is all about refinement, to produce an exceptional car better yet. Prepared to defend the 2013-2014 World Championship TQ and title by Tadahiko Sahashi from Japan.
Specs:
- Course: 1/8th scale fuel on-road, IFMAR guidelines
- Function: High-end competition
- Body weight: 2.420kg (depending on radio gear)
- Track-width back: 260mm - 266mm
- Track-width front side: 250mm - 260mm
- Wheel base: Adjustable 296 - 300mm +/-1.7mm
- Chassis: 5mm 7075 aerospace quality aluminium
- Broadcast dish: 2.5mm carbon fiber,
- Suspension: Independent increase wishbone suspension
- Shock absorbers: RCM shock absorbers
- Gas tank: 125cc design
- Back axle: Solid back axle
- Front axle: Aluminium front axle with one-way bearings
- Gearbox: Lightweight 2-speed XLi8
- Clutch system: Centax real Motion clutch system
- Guidelines: complete color Instruction manual online / PDF
- Adjustability: Camber, Caster, Down-stops, Up-stops, Toe-in, Track width, Wheel base, Front & back roll centre
Features:
- 4wd belt-driven competition automobile
- 2-speed gearbox and Centax battle clutch
- Independent suspension with hydraulic shocks
- Front shaft with oneways and rear solid axle
- 5mm aluminium framework with fat slider system
- 2.5mm carbon radioplate with flex system
- Aluminium bearingblocks front and rear
- Central rear axle braking system
- Front cvd , back dogbone drive, both with fast modification wheel system/axles
- Ball raced front and rear anti-roll pubs
- 2-speed gearbox SL8 XLi with superlow inertia
All of the areas of the gearbox have been made smaller and also as light as you possibly can, to lower inertia even further, nevertheless keeping durability on top of the list. The gears changed to a 0.8 pitch which can be smoother versus initial one. The Serpent gearbox system ended up being our innovation in the belated 80-ties and system hardly changed, just optimised, and now as system being used with other brands .
Key features:
- 2-speed gearbox SL8 XLi with superlow inertia
- Composite 2-speed gears with 0.8 pitch
- Centax hardcoated alu clutch gears with 0.8 pitch
- Aluminium chassisplate in 7075 T6 with optimised flex and weights fall
- carbon fibre 2.5mm radioplate with aluminium mid-flex system
- aluminium main flex system with bearings
- front bumper with inserts
- geometry with narrower front end
- improved back bodymount
Centax
Centax hardcoated alu clutch gears with 0.8 pitch
To choose the 0.8 pitch gears, the Centax gearpinions additionally needed seriously to head to the 0.8 pitch. The precision machined and hardcoated gears are durable and smooth. The Centax clutch is a Serpent innovation from the very early nineties, and it is in usage by most brands now.
Framework
Aluminium chassisplate in 7075 T6 with optimised flex and weights fall
The chassisplate is a critical part as main unit inside car. The flex-characteristic is a significant point, and fat stability using the sliders we use additionally the dissipation of temperature through the engine. The framework is narrower into the front to allow a slightly various geometry. 2 sets of front lower pivotpins holders are included to improve the geometry, run it narrow or wide. Machining for the chassis allows flex in a unique area as prior to, and can be influenced by utilizing the carbon brace.
Brand new geometry with narrower front end
The narrower framework in front allows to operate a slighly various geometry in the leading.
Radioplate
Carbon fibre 2.5mm radioplate with aluminium mid-flex system
The rigid carbon fiber radioplate is certainly one piece once again aided by the flex system moving toward center for the car, simply behind the tank.
Central flex
Aluminium central flex system with bearings
The device include a reduced and top anodised aluminium area, linked with screws for zero flex, or with bearings inside for many controlled flex. It takes removal of just 2 screws to go from fixed to managed flex.
Bumper
Front bumper with inserts
The newly developed front aero kind bumper is an extremely durable device, which as additional function offers detachable inserts. Its super easy and quick to test with or without inserts in only a matter of seconds.
Bodymount rear
Rear floating bodymount
Additional ribs and much more product is added to raise the stiffness of this backside bodymount and a 4th gap is added both edges to get more tuning options
General overview
General Qualities:
5mm aluminium chassis in perfect symmetrical shape for even flex and fat distribution. Aerospace quality 7075 T6 aluminium with engraved logo. Enhanced tightness round the motor for better motor performance. Countersunk holes, chamfered sides for more cornering, ground clearance. Space in center section of the framework allowing mounting of brass sliding weights, that are used as set-up tool, to try out with chassis stability. It has big impact on steering, grip and tyre wear and it is quite simple and quick to improve. All screws from base are with 2.5mm allen size.
The strong aerodynamic shaped composite bumper. The upward edges ensure it is more stabile, so these wont touch the surface under effect or with high conditions. As additional feature provides removable inserts. Its very easy and fast to test with or without inserts in only a matter of moments
The durable composite front bodyposts are excentric , to allow moving the body to front side or back some mm to optimize steering / downforce.
The steeringblock , that can easily be installed kept or right, offers something to change the axle position more to front or right back giving a trailing or leading steering, plus the ability to change the kingpin-inclination and offset. The steeringblock features an aluminum dish to get in touch the steering-rods, 2 choices for Ackermann.
The spring-steel steering-rods are fastened to your alu steeringplates, which mount toward new steeringblocks. Optional carbon fibre disks can be mounted on the side associated with the uprights to stiffen the assembly and for aerodynamic reasons.
The long durable front side reduced wishbones, are installed superlow into the car, and function a semi covered leg the internal suspension pin as well as the pivot link for the leading anti-roll club system, its also offers an extension for the down-stop screw . The reduced hands hold the lower alu shockmount plate, allowing an additional out and higher mounting point for the front shocks. The strong top hands in can be used left and appropriate. The leading lower arms hook up to the alu front side bracket on really low nylon holders. The kit includes 2 versions, wide and narrow . This entire system additionally allows you to change a front driveshafts extremely swift and easy.
The longer upper hands are mounted between your anodized aluminum top brackets, that also support the suspensionpin inserts to permit camber-change changes with 3 possible inserts . Below the alu top-brackets spacers could be used to modification angle or height. Caster spacers are used as easy videos regarding top pivot pins. Exact same clips are applied to the lower pins to alter wheelbase.
The topmounted composite bracket provides additional stiffnes toward front side area, it holds the 3mm dense carbon fibre front side shocktower and invite for the down-stop screws.
The ballraced front anti-roll bar is a cable kind, with super easy and fast open access in the front side, captured in the alu front braces. The standard wire is 2.5mm and 2 other as options. The pivotballs link system directs the power to the bar in a smooth means and easy to modify the tweak because of the captured pivotball.
Into the front side the alu front side axle with Japan-made one-way bearings features now a better pully set up, free of play and super-true. Springsteel drivecups, strong, long and slim spring-steel driveshafts with CVD system, and ballraced springsteel wheelaxles with alu quick-change levers. The available front end design allows for quickly and simple removal of the front axle or components.
The springloaded servo-saver allows effortless and quick Ackermann settings. The servo-saver features a high mounted insert that can easily be used in 3 jobs. Another 2 Ackermann jobs on steeringblocks.
The steeringblocks and back uprights connect with the arms with springsteel 8.5mm pivotballs , which operate very smooth and well protected in nylon cups, and generally are easy to adjust with an allen device.
2.5mm carbon fiber radioplate using the the middle flex-control system. The radioplate holds the fueltank, the receiver battery additionally the integrated electronic devices bracket/box, along with the center flex system
The brand new center flex system include a reduced and upper CNC machined aluminium bracket and a smal carbon brace. Top of the one is fixed towards the radioplate and the reduced someone to the guts radioplate mount.
In rigid standard positon top of the and reduced brackets are installed fixed with 2 screws.
In flex place the two bearings are in place and with the 2 screws dis-assembled, provide the main chassis flex.
Compact composite brace and package in one, which holds and protects the receiver and mounts both servo?s, which both lay on their edges, only possible, just a small approval to allow for chassis flex. The limit for the receiverbox offers a unique yet simple and easy safe holder the cable connectors regarding the receiver, which works as a straightforward switch and is extremely accessible.
The optional carbon transponder brace mounts towards integrated electronics brace. When working with a small receiver, the box has space to keep the transponder too, but must certanly be tested for function ahead of the competition. Inside our test drive it worked.
Low 125ccm fueltank in an extended and narrow design, with a premounted bronze filter. The narrow tank will guarantee a better fuel-supply to the motor, as the fuel can move less back and forth. The labyrinth inside the fueltank will even keep the gas more stable and prevents foaming. The tank comes with elevated sections in front side, which can make yes the gas stays close to the filter as soon as the tank is practically empty. This produces like a caution sign a matter of seconds before the tank goes completely empty, to help you look for a safer place to park. The fueltank has a solid springloaded cap and silicone plastic shaped seal, and contains a link for the stress line. The internal bottom regarding the tank permits mounting inserts to reduce volume if needed.
The composite nylon radioplate bracket, holds the rear part of the radioplate as well as the strong chromed angled roll-bar, and in addition mounts the adjustable ballraced belt-tensioner. An aluminium one is optional.
Most of the topmounted screws have been in allen 2.0mm size, aside from the top suspension brackets in 2.5mm.
The batteryholder between the tank and side gear , is built to fit the more typical Lipo packs. There's also room enough to fit a typical batterypack. The holder incorporates a simple spacing system allowing this.
The light, hollow 8mm hardcoated aluminium middle shaft is held rigidly in destination a small, low placed and light alu holder, which also holds the spring-type exhaust-wire.
The ultimate drive ratio for the car is 2.286
28T front side pulley
18T mid-inner pulley
25T mid-outer pulley
19T external lay-shaft pulley
21T inner layshaft pulley
48T back axle pulley.
All the superround and true pulleys have holes inside side flanges allowing dirt and dirt to maneuver away easier. The 977 gets the latest pulleys, with additional teeth, so larger diameter helping to make the belts operate smoother, with less friction.
The belts are low friction type as standard, back one as 8mm, part in 6mm and front 6mm too. The adjustable ballraced belt-tensioner ( carbon, alu) keeps the sidebelt running smooth.
The lower seated anodized aluminium motor mounts keep carefully the engine well placed and aligned and transfer heat to the framework in best way.
The rear end construction with the alu brackets holds the brake and back axle. Its available design allows for eas of maintenance and cleansing, and needs hardly any screws to dis-assemble. Changing a belt whenever required, is easy and very fast too. The eccentric regarding rear shaft permits gear tensioning. The whole rear end are eliminated as one unit through the chassis, with hardly any screws.
A corner axle sits really low in car, to attain more technical hold.
The braking system is regarding the back axle, beside the solid axle pulley. This reduces the inertia aftereffect of the brakedisc a lot as the back axle spins a great deal slower versus twospeed shaft. Additionally the brake-stress on rear belt is almost gone. It's a tremendously compact system and well protected against dirt, but still open enough allowing for enough coolng. The swimming ventilated brake-disk rotates on the rear axle while the springloaded cam-operated brake pads will give you all the stopping energy you may need. The battle braking system pad material is baked on strong steel dishes and permits really accurate stopping with plenty of brake-feel / feedback. As opposed to a cable we plumped for the well-proven wire-linkage of all of the Serpent automobiles.
The ballraced brake activator is bolted in a light alu holder toward right rear bracket.
The ballraced backside anti-roll bar mount in metal adaptors, which operate in nylon spacers into the alu holders as built-in the main back brackets, with 2.5mm as standard cable and 2 other as choices. The anti-roll bar links to your rear reduced hands with adjustable trackrod guidance.
The solid back axle with lightweight 48T pulley in Serpent springsteel, 9mm wide with 4 slots the pin.
The aluminium back brackets and 2-speed layshaft holders have actually small ears which permit mounting of the optional alu or plastic spacer, to regulate flex. Either complete flex, no spacer, or some flex with plastic spacer, or zero flex with the aluminium spacer.
The suspension bracket and rear dish contain the pins securely and have composite roll-center inserts allowing for fast and precise changes.
In the back strong springsteel driveshafts , springsteel wheel-axles with alu quick-change levers and a springsteel rear axle. Extremely durable and enduring drivetrain
The long durable back reduced wishbones can be used kept and right. The reduced rear arm holds the low installed website link the rear anti-roll club and holds the alu mounting plate of the rear shocks, allowing a position which will be very far toward back and to the outside for best performance/ geometry. The lower hands also support the easy to get at down-stop screws. Nylon videos are used regarding lower back pins to alter wheelbase.
The durable composite uprights contain the ballraced spring metal wheelaxles, with aluminium quick-change levers. The 8.5mm piotballs are acclimatized to adjust camber without headaches with the smooth hex-shaped plugs . The hands associated with floating bodymount mount to the the top of uprights. Over the up-right spacers can be added under the pivotball to alter rollcenter and camberchange.
Optional carbon fibre disks are attached to the medial side of this uprights to stiffen the installation and for aerodynamic reasons.
The adjustable back top camber links mount to your back carbon camberplate with 2 roles .
The trunk floating bodymount is attached to the up-rights with 2 hands and held in position by a carbon-fibre-steel guider. The mount has 4 positions each part to choose from, dependent on human anatomy used. The finish regarding the mount allow for mounting body-supports , with full threading to allow precise positioning. The system leads the available downforce direct onto to your uprights towards tyres.
2-speed gearbox SL8 XLi with superlow inertia
All of the areas of the gearbox have already been made smaller and as light as you are able to, nevertheless maintaining durability along with the list. The gears changed to a 0.8 pitch that is smoother compared to the original one. The Serpent gearbox system had been our innovation into the belated 80-ties plus the system scarcely changed, just optimised, now as system being used with all other brands .
Composite 2-speed gears with 0.8 pitch
Smaller lighter gears and with 0.8 pitch for smoothness and performance. The accuracy machined and hardcoated gears are durable and smooth.
The innovative Serpent real Motion Centax clutch is equipped. Serpent as creator associated with initial centax clutch, is promoting the clutch over time plus the present variation excels in power throughput , dependability and eas of environment. The typical variation includes a metal clutch bell, red centax show and difficult anodized clutch-gears.
The kit features high rate ballbearings, mostly sealed ones with aeroshell lubrication or oil. All bearings within the vehicle ( excluding the servosaver and brakecam) are seated in nylon bushings to lessen vibrations and play.
The shockabsorbers would be the latest Serpent RCM units with membrames. The threaded houses with setting-nuts ( o-ring inside) makes ride height changes easy and precise. The RCM shocks are very smooth, and easy to gather and fill. The shocksprings are selected, matched, flatgrinded, colorcoded units, equal size front side and rear.
The kit will not include engine-pipe, airfilter, human body, tyres-wheels or electronic devices.
The silicone shockoil , silicone fuelline and pressure line is roofed.
The 977-evo comes with a full color assembly manual Online as PDF , reference guide and exploded views all in one single. Set-up sheets ( blank and standard) are prepared to download seperately, and 2 decalsheets are included in the package .
Set-up possibilities:
- Wheelbase
- Caster
- Trailing/leading steering
- Offset
- Kingpin-inclination
- Camber
- Camberchange
- Roll-centers
- Ride height
- Droop
- Width
- Toe-in
- Weight stability
- Shocks for dampening and springs, shockangle
- Gear ratio with pulleys and 2-speed and clutch
- Anti-roll bar thickness
- Flex/no-flex
