2782A - Section 21

Mechanical Transport AP2782A (Section 21) - Hydrogen, Air and Nitrogen Bottle Carriers

Tasker semi-trailer, 8 ton, 2-wheel, drop frame, air bottle vehicle Crown Copyright^©
RAF Ref No	16A/1087
RAF Ref No	Possibly16A/1087 (Trailer)
Purpose	Storage plant providing a supply of compressed air for charging torpedo vessels.
Tractor	Bedford OXC, Crossley or Commer Type Q tractors fitted with a Tasker ramp and coupling unit attachment.
Chassis construction	Rolled steel channel section, electrically welded. Three point suspension; forward end, Tasker semi-trailer coupling unit; jockey wheels for support of semi-trailer when detached from the tractor. A welded steel tubular steel tow-bar, fitting into two lugs on the jockey wheel axle provides means for steering and towing the trailer for short distances when a tractor is not available.
Suspension	Semi-elliptic springs underslung on main axle.
Brakes	Internal expanding operated by single vacuum line from the tractor, or by hand brake through compensator unit. A parking brake handle is fitted to the near side.
Jockey wheels	Mechanism - The jockey wheel axle pivots on a vertical leg which is extended and retracted manually through a pair of bevel gears and a hand crank, one of the bevels operates on a screw thread on the leg. Jockey wheels - 2 x 9 in diameter cast iron wheels.
Wheels/Tyres	3-piece/10.50-20 HD
Body	Body - Cabin at forward end of chassis, welded steel frame construction , panelled with sheet metal. Entry to the cabin by canvas curtains from the chassis platform. Equipment - Water storage tanks, 170 gallons capacity. Water pumping and circulating equipment. Water temperature control for 30 gallons/hour. Air conditioning plant. Chemical tanks, sinks and circulating system. Film-processing machine. Body looked similar to that shown below on Tasker semi-trailer chassis.
Dimensions	Vehicle - Length - 31 ft 0 in; Width - 7 ft 6 in; Height - 9 ft 4½ in Trailer - Length - 20 ft 0 in; Width - 7 ft 6 in (Chassis frame - 5 ft 0 in); Height - 9 ft 4½ in (Loading height - 2 ft 11 in); Track - 6 ft 6 in; Centre of coupling unit to axle - 14 ft 3 in. Cabin- Length - 8 ft 6 in; Width - 7 ft 0 in; Height - 4 ft 7 in (front), 6 ft 5 in (rear);
Weights	Unladen - not stated; Laden - not staed
Notes

Eagle, 5 ton, 4-wheel, hydrogen cylinder, trailer Crown Copyright^©
RAF Ref No	16A/343
Chassis details	See entry in Section 15.
Body	Flat platform incorporating low wheel arches. Hydrogen cylinder cradles mounted on special steel bearers carried on chassis frame.
Dimensions	Length (with tow-bar) - 22 ft 0 in; Width - 7 ft 6 in; Height - 7 ft 0½ in;
Weights	Laden - 5 tons 17¾ cwt:
Notes	Also shown in AP2782, Group 4.

Austin, 3 ton, 6x4, Type K6 chassis equipped as tender, hydrogen cylinder Crown Copyright^©
RAF Ref No	16A/1265
Engine
Gearbox
Performance	Max Speed - ; MPG - ; Radius of Action -
Dimensions	Length - ; Width - ; Height - ; G/C - ; TC
Weights	Unladen - ; Laden - :
Body
Tyres
Notes