SiG. SiG.
SPV cutaway drawing
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Air intake servicing air conditioning and air cooling systems for rear machinery
TV driving screen
Instrument panel
Rearward facing driver's seat with ejection parachute pack
Selector panel for powerpack attachments such as the thrusterpack conversion. These items are stored in the cabinets
seen immediately above the selector panel, and which run both sides of a gangway down the length of the vehicle
Driver and live TV screen. The SPV can be driven from either of the two positions
Brackets connect the seat to the armoured door. To leave the vehicle, the overhead
ramps are extended, sliding door and attached seat sideways till exit is clear
The power pack, held in position by twin clamps which raise it through a sliding
panel in the floor above, when required for thruster pack or other use
Armoured cable conducts current from the power pack to the magnetic brakes
Hub motors
Magnetic disc brake and support arm which pivots on the cantilevered bracket attached to main shock absorber.
The square-ended box to the left of the support arm contains the hydropacymatic ram by which the steering is
affected. The smaller wheels behind are coupled to turn in unison
Main shock absorber
A limited-travel absorber permits wheel to tilt on rough ground
The rugged tubular chassis
Air intake and duct serving fuel cell and forward cooling units
Front flotation chamber contains buoyancy compartments (not shown) for amphibious work. Its curved profile makes
it a useful fender at low speeds, but in the event of high speed collision it will collapse giving a cushioning effect
Head light and TV camera
Main hydraulics oil reservoir
Air intake
Cantilevered chassis supporting tracks and converter for the twin aquajets (not shown)
Motor driving tank tracks
Battery. This is a standby connected to motors in the four smaller wheels. These provide
drive when the power pack is removed and the motors in the six pairs of wheels are idle
Suspension (is similar on all wheels except front pair)

Driving position

driving position
The door and seat slide sideways (1) by means of rams (2) to enable entry and exit. The driver faces rearwards, steering by TV screen (3), showing forward view. In front of him are his instrument panel and control box (4) which slides out to the most convenient position. (5) is the selector panel and (6) the hatch through which the power unit emerges. The driving position is duplicated on the right-hand side of the cabin.

Chassis

chassis cutaway
The main, six-wheel drive is supplied by individual motors in each pair of wheels. Power is transmitted via the drive cogs (1) through gearing (2). Magnetic breaks (3) are similar to disc brakes but rely on magnetic forces, not friction. Rods (4) make the smaller wheels track the front wheels which steer by hydropneumatic cylinders (5). The wheels are suspended on hydraulic shock absorbers (6) which can also be used to retract the wheels for amphibious operation. Power is supplied to the wheel motors from the power unit (7). This works on fuel cell principles; that is the combination of air and the hydrogenic fuel generates electricity. The power unit stands on a ramp, held firm by twin clamps (8). This arrangement is used to present the power unit in the required position for other uses (see below). when the power unit is being used for other purposes the vehicle standby batteries (9) drive the four sets of smaller wheels. At (10) the caterpillar tracks are removed to show the internal drive motor and driving sprockets.

Power unit

power unit
The power unit can also be used to power small personal vehicles. Here it is shown converted into a thruster pack, electrically driven high-speed compressors supplying air jets.
storage
The various components are stored in the back of the vehicle in drawers (A). The appropriate ones are selected by using the panel (B). At (C) is an emergency escape hatch.
amphibious mode
When used amphibiously the wheels retract upwards and the flap (A) closes. Propulsion is then by twin water turbo jets, positioned at the rear of the craft.
climbing position
The incredible climbing position of the SPV is safer than it looks. The insert shows how the low centre of gravity (CG) of the vehicle is ahead of the rear tracks in the upright position. The vehicle thus has a built-in tendency to fall forwards rather than tip backwards.

Technical specifications published originally in British Annual,
later reprinted in Dutch Captain Scarlet Album

SPV blueprint
Phil Rae's SPV blueprint published originally in SIG #5
©1982 Philip D. Rae
side elevation
Side elevation
front elevation
Front elevation
rear elevation
Rear elevation
plan
Plan

Elevations published originally in Captain Scarlet model sheet

SPV
Technical Specifications
name: Spectrum Pursuit Vehicle
designer: Derek Meddings
description: Two-seater, high speed, pursuit vehicle capable of an amazing 200 mph. 25 ft long, bullet proof, hand-assembled vehicle having no windscreen. Driver sitting backwards steers the lightweight multi-purpose motors by television. Expertly fitted with radar and two-way radio, complete with proteinised food supply. Specialised combat vehicle carrying a lethal load of ammunition. Built from specifications laid down by Colonel White.