| The Dennis Dominator was designed for economical operation, to lower fuel and maintenance costs, and to give a smooth, safe ride. All this, plus the versatility of specification and the general strength and reliability normally associated with Dennis products maked this a bus chassis unique in its class. |
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| The custom built chassis incorporated the Voith automatic transmission with built-in hydraulic retarder, which was not only safer but resulted in signifiant savings in brake wear - the hydraulic retarder was wear-free and its use gave considerable savings on maintenance costs. |
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| The Dominator Chassis was suitable for either double or single deck bodywork with interchangeable major running units. A dropped centre axle allowed low or normal height bodywork which enabled an operator to standardise on one basic chassis design for their entire fleet. Years of Dennis experience went into the design of the chassis, which provided durability, long life and an excellent base for all types of bodywork. |
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| The Dominator was ideal for one man operation and was suitable for rural, city or inter-city work. Simple push button controls for engagement of automatic transmission and many other modern features gave a high standard of operating efficiency. |
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| Basic Specification |
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| Engine: |
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| Option: |
A (Main) |
B (Alternative) |
| Type: |
Gardner 6LXB Diesel Engine |
Rolls Royce Eagle Diesel Engine |
| Maximum Power: |
185bhp at 1,850rpm |
178bhp at 1,850rpm |
| Maximum Torque: |
552lbs.ft at 1,000rpm |
584lbs.ft at 1,000rpm |
| Heat Exchanger: |
For Engine Oil Temperature Control |
For Engine Oil Temperature Control |
| Alternator: |
24v 60 amp or 24v 80 amp |
24v 80 amp |
| Starter |
24v |
24v |
| Compressor |
15cfm |
15cfm |
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| Gearbox: |
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| Voith Diwa D851 3-speed fully automatic hydrodynamic-mechanical transmission. Alternative 4-speed version with overdrive top. First speed progressive hyrdrodynamic to fully mechanical giving :- |
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| (a) Starting Tractive Effort |
| (b) Smooth Acceleration |
| (c) Automatic Matching To Load |
| (d) High Efficiency |
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| Second and Third Gear - Purely Mechanical. Alternative 4-speed version is purely mechanical on second, third and fourth gears. |
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| Hyrdrodynamic Braking: |
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- Torque Converter used for wear-free braking.
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- Operation via vehicle brake pedal (Hand operation optional).
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- Braking effort is available in mechanical 2nd and 3rd gears down to 20% (approx) of maximum road speed.
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| Transmission: |
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- Engine and Gearbox direct coupled via flexible coupling. Drive to rear axle via 'drop' box to angle drive through hardy splicer type shaft to rear axle input flange.
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| Transfer Gearbox and Rear Axle: |
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- Transfer Gearbox and Bevel Drive.
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- Helical gears in transfer box for quiet running.
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| Option |
A |
B |
C |
| Spiral Bevel Ratio: |
14/31 (2.214) |
13/34 (2.615) |
14/34 (2.429) |
| Spur Gear Ratio: |
20/58 (2.900) |
20/58 (2.900) |
20/58 (2.900) |
| Overall Ratio: |
5.056 |
5.971 |
5.546 |
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| Performance: |
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A |
B |
C |
| Maximum Speed - m.p.h |
43 (45) |
36 (38) |
40 (42) |
| Maximum Speed - k.p.h |
69 (72) |
57 (61) |
64 (67) |
| Maximum Gradient At 15 Tons (Nominal) |
1 in 6.5 (15%) |
1 in 5.5 (18%) |
1 in 5.9 (17%) |
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| Front Axle: |
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- 6 ton capacity forge 'I' section alloy steel beam.
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| Brakes: |
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- Full air horizontal split system.
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- Air dryer incorporated in system.
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- Spring brakes for parking. Air wedge.
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- Automatic brake adjusters integral with brake construction.
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- Copper / Nickel 10% air piping.
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- Brake linings Ferodo AM 14.
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| Suspension: |
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- Front springs - 4" (101mm wide) x 50" (1270mm) dual rate with tension clips.
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- Rear springs - 4" (101 mm wide) x 62" (1574mm) dual rate with tension clips.
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- Telescopic shock absorbers at rear. Arm type shock absorbers at front.
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| Fuel System: |
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- 45 gallon (205 litres) fuel tank fitted to right hand side of chassis.
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| Chassis: |
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- Pressed steel chamber members, section 8" (203mm) x 3" (76mm) x 5/16" (8mm) increasing to 9" (229mm) x 3" (76mm) x 5/16" (8mm) over rear axle.
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- Channel form crossmembers.
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- Fabricated outriggers for body support were optional.
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| Steering: |
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- Hydraulic power assisted.
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- Power steering gear positioned to give short direct draglink.
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- Gear operated via shaft drive under driver's floor.
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| Electrical: |
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- 24 volt system. 178amp batteries (4x6-v) (recommended).
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- Alternator - 60amps or 80amps.
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| Engine Compartment: |
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- Encapsulated for noise insulation.
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- Positive air ventilation (by fan) to obtain minimum engine compartment temperature.
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| Radiator: |
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- Flexibly mouted at front end of chassis.
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- Hydraulically driven, and thermostatically controlled. 20" (508mm) diameter fan.
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| Air Cleaner: |
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- 12" (305mm) contrifugal type paper air cleaner situated in rear engine compartment.
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- Air fed into compartment via air duct, drawn down from the top of the body.
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| Chassis Lubrication: |
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- Airdromic automatic chassis lubrication fitted as standard
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| Chassis Weights (Dependent On Specification): |
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Tons |
Cwts |
Qtrs |
(Kg) |
| Front Axle |
1 |
4 |
3 |
(1255) |
| Rear Axle |
4 |
13 |
3 |
(4768) |
| Total |
5 |
18 |
2 |
(6023) |
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| Chassis Dimensions: |
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Wheelbase |
Overall
Length |
Width |
Front
Track |
Rear
Track |
Front Overhang |
Rear
Overhang |
| Double Decker |
4953mm
16' 3"
|
9422mm
30' 11" |
2450mm
8' 0 1/2" |
2093mm
6' 10 3/8" |
1880mm
6' 2" |
2183mm
7' 2" |
2286mm
7' 6" |
| Double Decker |
5639mm
18' 6" |
10108mm
33' 2" |
2450mm
8' 0 1/2" |
2093mm
6' 10 3/8" |
1880mm
6' 2" |
2183mm
7' 2" |
2286mm
7' 6" |
| Single Decker |
5639mm
18' 6" |
10845mm
35' 7" |
2450mm
8' 0 1/2" |
2093mm
6' 10 3/8" |
1880mm
6' 2" |
2183mm
7' 2" |
3023mm
9' 11" |
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