Serpent 747 1/10 scale 4wd gaspowered racing car. The Serpent 747 is the new development of the 200mm platform. Key specs: 4wd beltdriven, 2-speed SL6 gearbox, True Motion Centax clutch, RCM shocks, flex-control front and rear, new geometry front and rear, 3mm chassis with weight sliders, topquality alu parts, spring steel transmission parts, low and light brake. Light, wide sweetspot, easy, fast.
Symmetrical chassisplate for even flex and torsion, in 7075 T6 aluminium, anodised and laser engraved. Chamfered edges for more ground clearance when cornering and countersunk holes. Central slots to mount weight, which can slide into the right position and then secured.
The 2mm carbon fibre radioplate has multiple functions. It holds the fueltank in place which is mounted on 3 alu posts in rubber. On the right hand side the receiver mounts to a nicely shaped carbon fibre plate that connects tot eh radiotray, sqeezed in right between belt and tank. The throttle/brake servo mounts directly to the radioplate with nylon spacers and the steeringservo is rigidly mounted on aluminium posts to the radioplate.
Front flex system
The front section of the radioplate incorporates a flex-control system. You can either run the 747 with foxes front end, or you can loosen / take out some of the front upper radioplate screws, and control the flex with the 2 topmounted linkages.
Carbon fibre battery-holder positioned between the tank and pipe, for the best weight balance. The battery is easy to strap down with tape to the bracket.
Durable 75ccm nylon fueltank with transparent material to easy see fuel-content. Large springloaded quick-fill cap with seal with large tank opening for fast and easy refills. The bronze sintered filter will keep fuel clean and make sure tank will empty till last drop if needed. The fueltanks has some small walls inside to stabilise the fuel, and direct it towards the filter. Some special made inserts can be mounted inside to reduce contents as needed. Fueltank sits very low in the car for low center of gravity. Fueltank is mounted with clips on 3 alu posts with rubber buffers.
Hard Teflon coated threaded shockbodies in high quality aluminium. Supersmooth o-ring / bushing package, to guide and seal the spring-steel piston rods. Precision moulded pistons included in 3 types. Threaded pre-load shocknuts in alu with o-ring inside. Light but strong nylon spring-cups. Tight fitting ball-joints in top and bottom.
Newly designed lower front bumper with aerodynamic effects and better protection. Some parts of the lower bumper can be cut open to create more steering. The upper bumper / bodymount holder connect to the lower one to create a strong structure to absorb the crashes. The foam elements ( normal or large) can still be placed but are optional.
3.0mm carbon fibre shocktowers with 3 positions for upper shockmounting. In the centre you can mount the 3rd bodypost as needed.
A compact and superlight structure of topquality aluminium parts consist of top-brackets, L and R equal bearing brackets, lower suspension bracket front, L and R equal FR-RR standing suspension holders and rear, anti-roll bar holder and Lightened machined alu brackets, equal left and right, toothed section allow setting belt tension with excenters which seat the bearings. Machined alu topbrackets L and R version to hold the upper arms. Suspension bracket front . All crafty machined and grey anodised parts. The open style design allows for very fast parts exchange as needed, like belt, diff or anti-roll bar.
Strong long double A-arm suspension with aluminium pivotballs, which pivot in light nylon cups. Medium hard nylon used for the arms to have some flex to increase grip, and make them most durable. The arms pivot on the inside on springsteel pins. The pivot-inserts are used to change rollcenter. Small grubscrews mount in the upper bracket to control downstop. Easy to access and change ride height, front width, toe-in, caster and camber.
Steeringblocks / wheelaxles / cvd
Very strong nylon steeringblocks with 2 ackermann positions . The spring-steel wheelaxles are seated in high speed bearings. The light and durable spring-steel cvd’s bring all the power to the front wheels. Wheels are mounted to orange anodised high grade aluminium hex-adaptors using serrated wheelnuts.
Anti-roll bar front
The ballraced wire type anti-rollbar in the front is really easy to access and change for other type or thickness as needed. The anit-roll bar is linked to the lower a-arms with a unique pivotball/cup system, which provides direct and smooth operation and is easy to set.
Servo-saver / steering
The centraly mounted steel servo-saver post fits the spring-loaded ballraced servo-saver system and steering. The inserts allow 2 ackermann settings. Due to the open design the linkages with L/R threading can be reached easily. The whole system allows for very precise steering and minimum bumpsteer.
Middle shaft holder
Machined 2 piece aluminium middle shaft holder, which securely holds the spring steel middle haft, and doubles up as holder of the pipe-mount.
Very open rear end design with a composition of 8 machined alu brackets, allowing for controlled flex and easy maintenance. The differential brackets, L and R equal, are toothed and seat the excentric bearing holder, which allow for setting belttension. Its very quick and easy to mount a differential and or replace a belt.
The 2-speed gearbox shaft holders, double up as anti-roll mounts, and brake system basis. The holders can be connected to the upper rear brackets in case less flex is needed. Optional are a a rubber inserts or aluminium inserts. All topquality machined parts with anodising and laser-engraving.
the low mounted brake system with superlight disk allows for smooth and even braking, and the open system avoids overheating. The ball-raced excenter and lever gives a very smooth and direct brake-feeling.
The machined aluminium lower suspension brackets have roll-center inserts with 3 positions to choose from. The rear bracket is the V1 version, whicj is narrow thanm usee on the 733, to achieve the new geometry together with the near lower arms and uprights.
Rear carbon shocktower and camber bracket
The 3.0mm carbon shocktower has 3 upper mounting position for the shocks and it mounts the body-poles. The camber bracket offers 8 positions to choose from, 4 inner and 4 out holes.
The new lower rear arms together with the new uprights create the new geometry in the rear, to create a wider set-up sweet-spot with more grip and more steering. The upper camber rods connect to the carbon camber bracket with 8 mounting positions for roll-center and the camber rod is easy to access and has L/R threading for fast changes. The aluminium pivotball system allows for fast changes in width and toe-in. On the lower inside the wishbone pivots on springsteel pins, which seat with roll-center inserts in the anodised alu suspension brackets.
Lower rear wishbones
the composite lower wishbones feature a mounting position for the anti-roll bar linkage bracket in carbon, which moves the link position more outside and higher. Its also offers a mounting position for an optional carbon shock-mount bracket, to move the lower shockmount position further out, but for the default set-up its not needed. By placing the lower shock further out, you will get even more steering .
Uprights / wheel-axles
Durable medium type nylon uprights, which seat the wheel-axles bearings. The upright offers the mounting position for the steel camber-rod with L/R threading. The durable spring steel wheelaxles bring to power from the gear-diff to the wheels. Wheels are fitted on high grade anodised alu wheelhex adaptors and secured with serrated flanged wheelnuts.
Anti-roll bar rear
The ballraced wire type anti-rollbar in the rear is really easy to access from the top and change for other type or thickness as needed. The anti-roll bar is linked to the lower a-arms with a steel rod. The lower arms offers 2 mounting positions to choose from.
Compact, durable and light gear differential. Pecision moulded steel gears, 2 small and 2 large ones. Steel internal shaft. The very durable and light spring steel lightened diff-adaptors connect to the driveshafts. The geardiff is same front and rear.
Spring steel, light and very durable CVD’s used in the front. Precision mounted hard steel pins
Spring steel, light and very durable dogbones used in the rear. Precision mounted hard steel pins
Precison moulded super-true pullies, which feature holed sidewalls to let debris move out easier. Light and durable.
Kevlar reinforced belts with fine pitch. Longlasting and smooth.
Ball raced belt-tensioner, machined from aluminium and can mount on top or below the radioplate.
The well proven SL6 gearbox is standard in the 747. Extremely light and compact, with very low rotating mass. Durable and longlasting gears. High quality bearings. Very grippy springloaded 2-speed shoes, easy to set.
True Motion Centax clutch
Serpent invented the Centax clutch in the mid 90-ties, and all brands followed it. Small improvements are found to make the original system even better. The True Motion Centax has a flat flywheel, and the taper part on the pressure plate. This allows the flyweights to work even better. The hard anodised aluminium flywheel has 4 holes to have easy access to keep the flywheel in position when setting the pre-tension. The flyweights are made of topquality teflon and feature an additional hole to use grubscrews to make them heavier. The red friction clutch shoe is very grippy, and works excellent with the steel clutch housing. The hard anodised gears screw on to the threaded steel bell.
The machined and anodised monotype engine mount has cooling ribs on the sides and stiffens the chassis as well. The mount perfectly seats the engine, well alligned. with the gearbox. Small adjustment can be made to move the engine closer to the gearbox.
The 747 comes with a full color assembly manual, with easy to follow assembly steps. The manual also includes an exploded views section showing all part numbers, and a full parts-list, showing also all optionals for the 747.
The 747 includes one sheet with Serpent generic logo’s and one with 747 logo’s. Decals are very fine and thin material and come pre-cut.
The 747 comes in a strong, small carton box with nice graphics. The packing of the bags follows the steps in the manual.