Serpent Cobra 811 Truggy TE 1/8 GP

Serpent Cobra 811 Truggy TE 1/8 GP

November 4th, 2012

Joseph

Serpent Cobra Truggy version TE, gas powered 1/8 scale 4wd high end competition version in kit form. 4wd gas powered version, based on the successful Cobra Buggy. The ultimate competition racing truggy, for high end competition use. Designed by Serpent designer/racer Billy Easton, USA.

This new development for Serpent Cobra Truggy is mainly created to further improve durability and features. Improved differential couplers front and rear and larger bearings for same, and also larger bearings in the steering blocks and up-rights. The new coupler in the front also requires a new central front cardan shaft. The new uprights fit the new wheel-axles which feature rubber dust boots, combined with a new length rear cvd drive shafts. The steering blocks are same as from the Cobra buggy, and those had the larger bearings already while ago and are in use on many Cobra truggies too.

Chassis plate:

Chassis plate in 3mm 7075 T6 aluminum with machined pockets to create flex and make it lighter. Kick-up angle on front for stability on landings. Countersunk holes and slots to locate the front and rear suspension mounts precisely. Angled sides to increase stiffness. Laser engraved Cobra T logo.

Bumper

Aligned with chassis kick-up for precise landings and to protect front suspension holder and anti-roll bar.

Chassis stiffeners

Composite stiffener front and rear to give extra stiffness, but still allow some flex as needed.

Central radio / servo mount

Composite radio box which offers good space for the steering and throttle -servo, the receiver and rx battery. The whole assembly including linkages can be taken off easily and fast in one go, when cleaning the car or doing maintenance. One extra post is added close to the servo for stability.

Servo arms and linkages

The servo arms have a splined insert to have the right fit per brand. The linkages run very clean and tight and are easy to access to modify settings.

Suspension brackets

Beautifully machined 7065 T6 suspension brackets in anodized, laser engraved. Precision fit for the nylon roll center inserts and pivot balls / pins.

Steering blocks assembly

Composite steering blocks combined with 10 dgr C-hubs for precise steering. Spring steel wheel-axles with large size bearings and larger inner with precision threaded aluminum wheel-hubs with offset . Flanged and serrated wheel nuts to guarantee that you will not loose a wheel nut in a race.

Front suspension

Durable over sized lower suspension arms in strong composite nylon. On the lower side the special shaped down stops screws are mounted. The lower shock-mounting pins are secured with a small grub screw from the bottom.

Front anti-roll bar, Shock tower and body mounts front

The ball raced front anti-roll bar system, consist of a spring steel bend wire, which is guided through the diff-cases and runs in ball raced steel adapters. The wire is linked to the lower suspension arm, with a captured adjustable threaded pivot ball, for very precise and low friction operation and easy tuning. 4.5mm thick carbon shock tower with 5 upper positioning holes for the shocks and and 6 holes for roll-center positions. 1 centrally located adjustable body mount , and 2 forward mounted adjustable body mounts, all with flip-tops.

Angled steering system / servo saver and Ackerman plates

The bell cranks are angled to reduce the angle of difference between the total caster and steering plane. Therefore you will have less bump steer and a truer steering Ackerman through the entire range of suspension. With the design of the steering bell cranks when changing the Ackerman you will not need to adjust your steering tie rods. You simply will only need to adjust your end points on your radio.

Rear suspension arms and Mud-guards

Durable long over sized lower suspension arms in strong composite nylon. On the lower side the special down stops screws are mounted. The lower shock-mounting pins are secured with a small grub screw from the bottom. Mud guards mount to the lower suspension arms, and will keep dirt away from your anti-roll bars transmission and wheels.

Rear uprights assembly

Composite uprights with 3 upper roll-center positions. Strong steel track-rods with L/R threading and strong ball joints to pre-set camber. Spring steel wheel-axles with large size bearings and larger inner ones with precision threaded aluminum wheel-hubs with offset . Rubber dust covers in the rear to protect the cvd system and keep the lubrication inside. Flanged and serrated wheel nuts to guarantee that you will not loose a wheel nut in a race.

Shock tower, Wing mount and body mounts rear

4.5mm thick carbon shock tower, integrated into the rear section for extra stiffness, with 5 upper positioning holes for the shocks and 6 holes for roll-center positions. Composite rear wing, with strong nylon adjustable rear body mounts on wide body-support bridge located far enough to the rear, to support the bodies in best way.

Captured pivot pins and balls and bolted hinge pins

All spring-steel hinge pins are either captured or bolted in place and made in spring-steel quality. This insures your chances to finish an hour long main event, while battling for the lead. This relieves stress on the hinge pin when adjusting the kick up, or anti squat. Your pin is free to rotate to any angle without binding.

Shock absorbers big-bore 16mm with RCM shock springs

Hard Teflon coated threaded shock bodies with 4mm shock-rods. Hard anodized aluminum screw on shock-tops with Serpent laser engraving. Pre-load adjusters with o-rings inside. Shocks use large diameter membranes and large diameter o-rings and bushings to create a super smooth and leak-proof package. Large diameter pistons are held in place by a nut on the polished shock-rods tops. Open type spring retainer to let dirt out easy. The shock-shafts are protected by rubber boots. Short type color coded shock springs are supplied for the 1st standard set-up Springs are grinded flat top and bottom, and checked individually for tension and length.

Compact gear differentials

Very compact gear differentials with very smooth metal sintered gears, and steel shaft. Perfect sealing case with special gasket and o-rings. Very light and durable out drive cups in spring-steel. Hardened spring-steel diff-coupler 10T with connector running in 2 over sized bearings . Drive ratio 4.3:1. This drive ratio will provide amazing acceleration combined with the low vehicle weight. It is a sure win, to help improve fuel mileage

Front and rear cvd-sets with Spring steel transmission parts

Both front and rear captured drive shafts are being used with CVD system. Durable yet light spring steel engraved drive shafts with hard steel pins. The front and rear thin but strong spring steel cardan shafts connect the differentials.

Throttle and brake lever ball cups, Piston Braking system, Fiber Glass disc brakes

Helps provide consistent pulling on the brake lever or carburetor if you do not have the linkage perfectly aligned. Provides more stopping power than you could have ever imagined before with a whole lot less servo power. Also is fully adjustable with 3 types of pistons, solid, O ring type, spring type. In turn you can adjust your bias or braking feel to your liking in more ways than ever before. Fiber Glass brake disks with over sized front disk.

Brake plate springs
Will keep the plates spread open to insure un-wanted dragging of the brake discs.

Racing clutch 4 – shoe

Allows you to mix and match shoe materials evenly in pairs. Also provides more surface area contact to insure the engagement. 4 carbon shaped shoes are standard ( aluminum ones optional).

Coil exhaust wire and aluminum mount

Helps aid in the front to back movement of the pipe when chassis flex occurs. Helps prevent damage to your exhaust gaskets.

Engine mount

Machined 7075 T6 aluminum engine mount, with side cooling-fins.

Fuel tank 150cc, Fuel line and stoppers

Splash basin on tank top, self centering Fuel tank seal, The fuel tank seal is angled to self guide its way into the bore of the tank. At the same time will provide a seal on the chamfered and flat edges of the seal, providing consistent engine performance from one pit stop to the next. Built in tank splash guard which helps prevent fuel from splashing onto your air filter in the event of an overly excited pit man. Kit included top quality soft silicone fuel line to connect to tank, car and pipe, and also includes small composite stoppers to close yr fuel line when taking out tank, engine and or pipe.

Tank with swiveling nipple and floating clunk.
With the swiveling nipple you are able to adjust the angle at which you want you fuel line to travel. At the same time the floating clunk helps when you go upside down. The clunk by gravity will fall back into the fuel, utilizing the flexibility of the silicone fuel tubing.

Over sized Tank with adjustable volume.
With the insertion of a simple screw and volume reducer you can have ROAR, IFMAR and any other organizations legal tank volume.

Low profile air filter

Centralized air filter design to minimize cab width and height. Flexible rubber boot combined with strong nylon case to support the foam elements. Excellent dense foam air filter elements to keep your engines clean inside.

Body, Rear wing

Serpent Truck body , with film and masking tape is included in the kit. Low version strong rear white aero rear wing is included for great down force and straight line stability

Oils and grease

The shock-oil, diff oil and some grease is supplied to meet the standard set-up.

Manual and set-up

Full color manual with easy to follow assembly steps, exploded views for easy spares ordering, a blank and standard set-up sheet for a good start set-up.

Decals

Black and white promo body-decals ; Serpent generic and Cobra ones.

Packing

Parts are packed according to the steps explained in the manual.

Service and Support

The Serpent distributor, dealer or agent is your source for more info, but also the Serpent website and the member section and the YouTube channel provides lots of information.

Needed to complete the car:

– radio, receiver, servo x 2

– .21 or larger gas powered engine and pipe-set

– fuel with 16% or 25% nitro and fuel bottle

– wheels and tires

– tools

– paint

– starter box, glow starter

– charging equipment