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Serpent Cobra S811: new radio-box - upgrade set (16/09/2010)

By:: Reporter
Linked to:: Cobra 811 1/8 4wd buggy, Cobra TE 1/8 4wd buggy, Cobra 811 Buggy 2.0 1/8 4wd buggy, Cobra Buggy 2.1 4wd 1/8, Cobra Buggy 2.2 GP 4wd 1/8

Serpent Cobra

Serpent introduces the new radio-box for the Serpent Cobra S811.

The new radio-box, which Billy Easton designed, offers a solution for the brake-throttle servo-issues, by placing the throttle-brake servo much more forward. Simultaneously it offers many more advantages as explained below.

The current position of the throttle-brake servo is very far to the back. Todays modern generation of digital servo’s seem not durable enough to absorb the hard bumps which occur after landing/jumps. Too many drivers had issues with this. We gave some tips on how to mount the servo better and /or used some foam rubber spacers, but this still did not work with all drivers.

So we decided to redo the radio-box design in such way that most modern servo’s can be used. Still in our opinion the servo makers have work to do, as we see too many servo’s braking, also in other brands of cars. Its no fun to leave a race or final due to this.

The new radio-box and layout actually offers many advantages, as listed below

What are the changes and advantages ?

1)   Servo is relocated the farthest away from the engines vibrating epicenter.

2)   Servo is relocated the farthest away from the abuse on the rear end, whether under jump landings or rear end bump impacts.

3)   Transponder was moved further forward, , and both older and also latest version transponders (with small holder) fit.

4)   Carburetor was rotated for easier access of high speed and idle speed needles

5)   Brake Ratio was improved to 1:1 ratio to take the strain off the servo

6)   Servo pull speed was improved 10% for better response.. If you use a servo that was .13 in transit speed. it will now perform like .11 on throttle, but still remain .13 on brake pull.(This improves response on throttle, but retains torque on braking. (Also though the speed is adjustable by the user. If he wants faster response than provided by way of shims)

7)   New layout helps retain almost the same balance from previous layout

8)   Servo heights are now more adjustable so you can always maintain lowest possible CG , using servo spacers

9)   Servos are mounted in a new way that reduces the need for extra inserts and always maintains a safe distance from the servo walls.

10)    New styling matches the overall cars appearance even better (although of course this is subjective to all)

11)    Double collar now with machined diameter, so you can adjust the drag brake on the fly during warm up of a race

12)    Servos can be changed more easily without having to remove radio tray

13)    Fits still by use of original S811 Body shell

When ready ?

The new radio-box and other parts as needed for the upgrade will be ready mid November 2010, we try even before.

What is included ?

The Cobra Radio-box Upgrade set, will include all parts needed to change the Cobra to the new lay-out. Main parts are radio-box, box top-caps, servo-brackets, servo-levers and an instruction sheet on how to assemble all.

Whats the cost ?

The Upgrade set will be offered free of charge to all Serpent Cobra owners. Dealers and distributors with Cobra S811 kits in stock, will also receive a free upgrade set in the same qty as they carry stock for.

How to obtain the upgrade set ?

You will need to apply for this set to your original supplier of the Cobra S811 kit. We will basically ship the same qty of Upgrade sets to Distributrors and Dealers, as they have received Serpent Cobra kits, since its launch.
As soon as the Upgrade set is ready, then also the stock of Cobra kits , will be upgraded and the next batches will have the new radio-box as standard ofcourse.

Serpent with above action, makes a very large effort, together with the Serpent distributors and dealers, to create even happier customers. From the race results and reaction we get, its very clear that the Serpent Cobra performance and quality is to everybodies liking already.

Enjoy racing !

Team Serpent