- FOCUS ON TRAILERS -

The Canadian 10 CWT G. S. Trailer.

FUNCTION;

This vehicle was designed so that it could be towed, primarily, behind a Willys Scout Car (jeep) { this is the terminology used in the Design Records Vol. V11, the Canadian term is W-LU 440-M-PERS-1 (Willys Light Utility Military 4 wheels, 4 wheel drive, 80 inch wheelbase, Personnel, 1st Model).  It was also called the Light Utility, then Car 5 Cwt, }  either singularly, or in train of from one(1) to three(3) trailers, it's purpose being of that of a General Service trailer with payload limit to 10cwt. ( One Hundredweight - cwt.= 112lbs), The trailer was fitted with a rotation head to the tow eye for use with the C.M.P.  The development was in three stages:

(1) COMPOSITE BODY

(a) Dimensions:

Outside Length  .......................................75-1/2"

Outside Width at top  .............................. 43-1/8"

Outside Width at bottom  ........................ 37-7/16"

Outside Height  ....................................... 27-7/8"

Inside Length  ......................................... 72-1/4"

Inside Width at top  ................................  43-1/8"

Inside Width at bottom  ..........................  32"

Inside Height  .........................................  24"

Height from ground to top of body  ....... 48-1/2"

(b) Weights:

Body Proper  ..........................................  325 lbs

Flat tarpaulin  .........................................   15 lbs

Attaching stock  .....................................     6 lbs

Gross weight  .........................................  346 lbs

The body is mounted on a 10 cwt. Trailer Chassis - Code 10-P, equipped with 6.00 x 16 Tyres

(c) References:

D. M. & S Schedule of Drawings  ........................................................................... S 15434

D. M. & S File Number  .......................................................................................... 73 - T - 73

Trailer Code Number  .............................................................................................  10 - P - GS - 1

Body Code Number  ................................................................................................  10 - E - 1

Pilot Model Approval Number  ...............................................................................  F 142

Experimental Engineering Report  .........................................................................  E 117

Maintenance Manual Number  ..............................................................................   S B - 8

Sources :- Brantford Coach & Body Ltd. & Frost & Wood Co. Ltd.

(d) Description of Body:

The substructure - Five (5) cross sills- are fabricated of hardwood, the ends fitting into and being protected by the rub rails of the body. There are no longitudinal sills. The floor is of 7/8" hardwood spaced at 3/32". The steel framework of the body is of 14 ga. H.R.B.A. steel. The body panels, side, front and rear are of 5/8" hardwood boards, spaced at 3/32".

The body is attached to the chassis by means of six (6) double 3/8" bolts with 3/8" plate beneath the chassis frame. Three (3) lashing hooks and two (2) lashing cleats are attached to each side panel with a single lashing cleat bolted to the center of the front and rear panels, in order to secure the flat tarpaulin. The fenders are attached to the rub rails of the body by means of two (2) horizontal braces.

2) ALL STEEL BOLTED BODY

(a) Dimensions:                                                       Clearance:

Outside Length  .......................................75-3/4"          Minimum at Gross weight, at the U-Bolts ......  7-3/4"

Outside Width at top  .............................. 43-1/2"         Angle of Approach  ........................................... 14 degrees

Outside Width at bottom  ........................ 31-1/4"         Angle of Departure  .........................................  19 degrees

Outside Height  ....................................... 25"

Inside Length  ......................................... 75-1/2"          (c) References:

Inside Width at top  ................................  41-1/2"          D. M. & S Schedule of Drawings ................ S 342712

Inside Width at bottom  ..........................  31-1/8"         D. M. & S File Number  ...............................73-T-73-1

Inside Height  .........................................  21-3/4"          Trailer Code Number  .......................... 10 - P - GS - 2

Height from ground to top of body  ....... 48-1/2"           Body Code Number  .....................................  10 - E - 2

                                                                                          Pilot Model Approval Number  .........................  F 254

(b) Weights:                                                                     Experimental Engineering Report  ...................  E 535

Body Proper  ..........................................  259 lbs           Maintenance Manual Number  ....................  S B - 8A

Flat tarpaulin  .........................................   15 lbs            Sources :- Brantford Coach & Body Ltd. &

Attaching stock  .....................................     6 lbs                              Frost & Wood Co. Ltd.

Gross weight  .........................................  280 lbs

The body is mounted on a 10 cwt. Trailer Chassis - Code 10-P, equipped with 6.00 x 16 Tyres

 3) ALL STEEL BOLTED CONSTRUCTION, COMPLETE WITH WATERPROOFING FOR WADING AND/OR FLOATING

(a) Dimensions:

Outside Length  .......................................75-3/4"

Outside Width at top  .............................. 43-1/2"

Outside Width at bottom  ........................ 31-1/4"

Outside Height  ....................................... 27-7/8"

Inside Length  ......................................... 75-1/2"

Inside Width at top  ................................  41-1/2"

Inside Width at bottom  ..........................  31-1/8"

Inside Height  .........................................  21-3/4"

Height from ground to top of body  ....... 48-1/2"

(b) Weights:

Body Proper  ..........................................  270 lbs

Flat tarpaulin  .........................................   15 lbs

Tool Box  ................................................   18 lbs

Attaching stock  .....................................     6 lbs

Gross weight  .........................................  312 lbs

Clearance:

Minimum at Gross Weight at U-Bolts ...  7-3/4"

Angle of Approach  ................................. 14 degrees

Angle of Departure  ................................ 19 degrees

REFERENCES:

D.M. & S Schedule of Drawings ... S 342712

D.M. & S. File Number ................. 73 - T -73 - 1

Trailer Code Number  ...................  10 - P - GS - 2

Body Code Number  ......................  10 - E - 2

Pilot Model Approval Number  .....  F 254

Experimental Engineering Report . E 592

Maintenance Manual Number  .....  SB 8 A

Sources:

Brantford Coach & Body Ltd.

Frost & Wood Co. Ltd.

Description of Waterproofing Proceedure:

All steel bolted bodies - 10 -E - 2 - can be water proofed in the following manner.

The body panels, side, front and rear are disassembled from the substructure. The bottom Flange of each panel is heavily coated wit "Elastigum" to a thickness of approximately 3/16" and a strip of rubber steam packing, 1/8" thickness. laid on the flanges of the the body panel. A further coating of "Elastigum", 3/16" in thickness is then applied to the exposed surface of the rubber strips.

The body panels are bolted to the substructure and the body completely assembled.

When the assembly bolts are tightened, the "Elastigum" is squeezed through the openings between  the panels, and is to be smoothed off with a putty knife, but leaving a bead of "Elastigum" 3/16" in thickness at the outside of each joint. The excess "Elastigum" around the inside of the flanges of the panels, where attached to the floor, is to be trimmed with a putty knife, without leaving any bead.

The "Elastigum" is then allowed to harden

Under the head of each bolt, and under each nut, a washer of rubber steam packing is isnserted, and then sealed with "Elastigum". Body mounting bolts, fender attaching bolts, tool box and manual holder attaching bolts, are all sealed by means of rubber steam packing washers and "Elastigum".

At the front and rear of the of the body side panels, an angle is used to attach the side panels to the front and rear panels. These angles are welded to the side panel by two (2) inch welds. It will be necessary to extend the welds to form a continuous seam weld.

CHASSIS

DETAILS

TYPE: FULL

LOAD CARRYING CAPACITY .....1120Lbs

GROSS CAPACITY: ...........................  1985Lbs.

DIMENSIONS:

Length:  ..........Overall  ... 119.25"

Length:  ......... Usable  .....  75"

Width:  ................................ 56"  

Height: ...............................  31.25"

WHEELBASE: ................  72.5"

TREAD:              

Front  ...............

Middle.............                                                     

Rear  .............. 49"

TYRES:                    

6.00 x 16, 6 ply Pneumatic x 2, as on 1/4ton 4 x 4                             

SPRINGS:

Front:  .........

Rear:  38" x 1.75". 10 Leaves, each 0.222"/0.228" thick. Similar to 1/4ton 4 x 4 Rear springs with 2 springs added.

SHOCK ABSORBERS:

Front:  ........

Rear:  Telescopic Type, as on 1/4ton 4 x 4.

   
Brake Drum, Springs, & Shock Absorber

SERVICE BRAKES:

Front:

Rear: Hydraulic - 12" x 1.75". As on Ford sedans and Station Wagons.

AXEL:

Front:  ............

Middle: .........

Rear: 1.75" Circular Solid Steel

TOTAL LINING AREA: .... 162sq.ins.

MASTER CYLINDER:

Quantity: ............................ One (1)

SERVICE BRAKE ACTUATION:

Overrunning: ............................  XX...

Vacuum Operated Single  ........

Vacuum Operated Duel  ..........

Air Pressure Single  .................

Air Pressure Duel  ...................

HAND BRAKES:                                         

Applies One (1) Axle 

FRAME:                     

Ladder type 32" wide, with four (4) cross members

and tapered tongue.

Maximum side rail section:

3.5" x 1.75" x 0.140"

TOW HOOK: .............................   D. N. D.  

LANDING GEAR:

Pivoted post at front

FIFTH WHEEL:               

Nil

LIGHTING:                    

Standard to O.A. 62 as on rear of C.M.P. Vehicles,

Plus T-Marker and outlet socket for vehicles in train.

AIRPORTABLE:

Yes

TOWING VEHICLE:

1/4ton 4 x 4. Or C.M.P. 15 cwt.

C.M.P.8

 REFERENCES:

CODE: .. 10-P

MAINTENANCE MANUAL:  ..  SB - 8

PARTS BOOK:  ..  SB - 8

COST:  ...........  Approx. $425

QUANTITY:  ..  Approx. 5,500

APPLICATIONS:  ..  General Service and Cable splicer

A.E.D.B.  E.E. Reports Numbers.  ..  E - 116, E - 500, E - 544

D.M. & S. FILE NUMBER  ..  73 - T - 73

D.M. & S. SCHEDULE NUMBER  .. S 18660

A.E.D.B. DATA BOOK.  ..  PAGE TP - 1

A.E.D.B. PHOTO FILE.  ..  D - 13