Type
'Speedcrafts' 3-wheeled Diesel Road Roller, Model DRR/10 (4 speed) & Model DRR-3/10 (3 speed), capacity 8/10 tonnes, generally conforming to IS : 5502 of 1988.

Chassis & Frame
Fabricated out of mild structural steel conforming to IS : 226/IS : 2062 Gr. A, electrically welded and all joints checked and tested to performance. Easy accessibility to all parts for overhaul and inspection is given utmost importance in design.

Prime Mover
Powered by Simpson S-4(I) / Kirloskar RB-33 water-cooled Diesel Engine with 12 volt electric starting system and an alternative hand start arrangement.

Transmission
The Clutch, Gearbox and Differential are integrated in a single unit. The clutch is of the heavy automotive double acting type, controlled by a single hand lever. A forward or backward movement of the lever gives a smooth and instantaneous corresponding direction of travel to the roller in any gear setting. The gears, pinions and shafts are housed in a mild steel fabricated gearbox and are manufactured out of special and recommended alloy steels. A differential locking arrangement is provided and is operated from the driver's seat.

Lubrication
Oil splash in gearbox and easily accessible grease nipples, cups and oiling holes.

Rolls
Fabricated out of mild steel plates conforming to IS: 226/IS : 2062 Gr. A and electrically welded and tested.

Brakes
Fully self-wrapping, external contracting type, fitted with replaceable brake linings and adjustable; controlled by a foot-pedal or hand-wheel independently.

Steering
Easily operated mechanical steering comprising of worm shaft and gear. It is designed to give jerk free movement to the front rolls.

Front Roll Yoke
Mild steel fabricated construction, with an efficient and strong built-in pivot, designed to withstand sudden jerks and loads.

Scrapers
Adjustable & reversible scrapers are fitted to cover the entire width of all rolls.

Controls
All controls are within easy reach of the operator from a comfortable driver's seat.

Pressure Balancing Device
A sliding weight in the chassis, operated by a handle, is provided to vary pressure on the front and rear rolls.

Awning
Made of steel sheets lined with hardboard and provided with side and end canvas curtains.

Water Tank & Sprinklers
A fixed pump is provided for feeding water into the water tank which leads to the sprinklers above each wheel controlled by a wheel valve.

Towing
A bird-mouth with draw-pin is bolted to the rear of the chassis for towing trailers etc.

Tool Box
Provided at the rear of the roller with a standard set of tools in a canvas tool-bag.

Ballast
Arrangement for ballasting the roller with either sand or water is provided in all the rolls.

Warranty
Our Diesel road roller carry a warranty against manufacturing defects for a period of twelve months or 1,000 working hours, whichever is earlier, from the date of sale.

Optional
Fully enclosed cabin, hydraulic steering, scarifier, cold-starting equipment, higher horsepower engine for high altitudes etc. may be provided at an extra cost.

TECHNICAL SPECIFICATION
Model	DRR/10 (4 speed) & DRR-3/10 (3 speed)
Unballasted Weight	8,000 Kg.
Water Ballasted Weight	9,000 Kg.
Sand Ballasted Weight	10,000 Kg.
Engine S-4(I)/RB-33	41.5/37.5 BHP. at 1500 RPM.
Overall Length	4880 mm.
Rolling Width	1810 mm.
Overall Height	2860 mm.
Dia. of Rear Rolls	1370 mm.
Width of Rear Rolls	535 mm.
Dia. of Front Rolls	1030 mm.
Width of Front Rolls	940 mm.
Line Pressure          Minimum          Maximum	Front Rolls         Rear Rolls 27.6 Kg./cm.        47.5Kg./cm. 41.1 Kg./cm.        61.7Kg./cm.
Overlap of Rolls	100 mm.
Wheel Base	2800 mm.
Turning Radius	3935 mm.
No. of Speeds         Model DRR/10         Model DRR-3/10	4 forward and 4 reverse 3 forward and 3 reverse
Speed         Model DRR/10         Model DRR-3/10	1.95 to 9.00 Km./hr. 1.74 to 7.47 Km./hr.
Gradient	1 in 5.
Fuel Tank Capacity	150 ltrs. (including spare tank)
Water Tank Capacity	225 ltrs. (including spare tank)
Permissible Variation	± 5%