Specifications
Dyno Dynamics - AWD 450 DS Quad retarder Chassis Dynamometer
Applicable Vehicles
•  Rear wheel drive
•  Front wheel drive
•  4WD/AWD cars, recreational vehicles (with selectable single axle drive)
•  2WD/4WD race cars
•  Sport utility vehicles
•  Light commercial vehicles
•  Motorcycles (with optional adapter)
Transmission Types
•  Front wheel drive
•  Rear wheel drive
•  All wheel drive
•  Locked Front:Rear AWD
•  Full time AWD
•  Viscous coupled AWD
•  Intelligent european AWD (Volvo dog clutch)
•   Variable ratio Front:rear
Vehicle / axle weights
Maximum vehicle weight 4,500 kg (9,900 lb)
Maximum axle weight (per axle) 2,250 kg (4,450 lb)
Vehicle wheelbase
(Alternative wheelbase dimensions available on request. Refer factory)
Minimum wheelbase 2,250 mm (89")
Maximum wheelbase 3, 500 mm (138")
Power, Tractive Effort, Torque and Speed (Note 3)
Front Axle  
Maximum power graphing 1,350 kW (1,800 HP)
Max. tractive effort graphing 41,400 N (9,300 lb)
Max. roller torque graphing 4,500 Nm (3,300 ft lb)
Max. axle torque graphing (Note 1) 12,300 Nm (9,000 ft lb)
Max. engine torque graphing (Note 2) 4,200 Nm (3,000 ft lb)
Max. power steady speed 900 kW (1,200 HP)
Max. tractive effort steady speed 27,600 N (6,200 lb)
Max. roller torque steady speed 3,000 Nm (2,200 ft lb) 
Max. axle torque steady speed (Note 1) 8,200 Nm (6,000 ft lb)
Max. engine torque steady speed (Note 2) 2,800 Nm (2,000 ft lb)
Max road speed 200 km/h (120 MPH) - 250 km/h (150MPH)*
Rear Axle  
Maximum power graphing 1,350 kW (1,800 HP)
Max. tractive effort graphing 41,400 N (9,300 lb)
Max. roller torque graphing 4,500 Nm (3,300 ft lb)
Max. axle torque graphing (Note 1) 12,300 Nm (9,000 ft lb)
Max. engine torque graphing (Note 2) 4,200 Nm (3,000 ft lb)
Max. power steady speed 900 kW (1,200 HP)
Max. tractive effort steady speed 27,600 N (6,200 lb)
Max. roller torque steady speed 3,000 Nm (2,200 ft lb) 
Max. axle torque steady speed (Note 1) 8,200 Nm (6,000 ft lb)
Max. engine torque steady speed (Note 2) 2,800 Nm (2,000 ft lb)
Max road speed 200 km/h (120 MPH) - 250 km/h (150MPH)*
Both Axles  
Maximum power graphing 1,800 kW (2,400 HP)
Max. tractive effort graphing 61,300 N (13,800 lb)
Max. roller torque graphing 6,500 Nm (4,800 ft lb)
Max. axle torque graphing (Note 1) 18,200 Nm (13,400 ft lb)
Max. engine torque graphing (Note 2) 6,200 Nm (4,600 ft lb
Max. power steady speed 1,800 kW (2,400 HP)
Max. tractive effort steady speed 55,200 N 12,400 lb)
Max. roller torque steady speed 6,000 Nm (4,400 ft lb)
Max. axle torque steady speed (Note 1) 16,400 Nm (12,000 ft lb)
Max. engine torque steady speed (Note 2) 5,600 Nm (4,000 ft lb
Max road speed 200 km/h (120 MPH) - 250 km/h (150MPH)*
Roller Chassis
Retardation and Loading  
Retarder/PAU type Magnetic eddy current retarder/PAU - Aux retarder/PAU
Load/speed availability High load available at all speeds
Cooling fins per retarder/PAU 84
Rollers  
Drive roller traction surface High grip Dyno Dynamics unique square cut knurl
Front & rear rollers linked No (fully independent).
Roller Diameter 217 mm (8.5") drive rollers 
Roller length 855 mm (33") 
Track Maximum (Note 4). 2180 mm (86")
Track Minimum (Note 5). 465 mm (18")
Roller rotation Bi-directional
Wheelbase adjustment  
Remote adjustment From command module
Wheelbase lock Self locking
Electronic Adjustment Front:Rear
Front wheel control  
Manual front wheel stabilisers Adjustable manual front wheel stabilisers
Wheel position indicators 2 x wheel contact indicators on command module
Exit Brake Electromagnetic roller exit brake
Bearings  14
Balance Rollers and flywheel dynamically balanced
Traction

Roller surface Dyno Dynamics unique square cut knurl
Low tyre temperature operation
Heavy duty traction control system*
Tie down points per bed 8
Traction control mount points 4
Axle download User adjustable (with straps or optional airbag)
Inertias (Per axle)  
Roller inertia and retarder (combined)  3.566 kgm2 (84.6 lbft2)
Bed equivalent inertia (typical) 302 kg (665 lb)
   
Installation and Dimensions
Refer installation drawings for detailed dimensions
Length extended 4,400 mm (173")
Width 3,390 mm (133.5")
Roller surface above ground
Above ground
In pit
390 mm (15") 40 mm (1.5")
Retarder cover above ground 550 mm (22") 150 mm (6")
Dyno Dynamics DS control system
Loading & Balancing 4WD/AWD Smart system for correct (safe) loading under all conditions.
Instrumentation  
Computer Custom turn-key computer system
Monitor* Country dependent - refer factory
Additional monitors* Additional monitors and remote displays available - refer factory
Command Module TouchScreen PDA
Cabinet* Range of heavy duty steel cabinets available - refer factory
Automatic fan control* On-Off-Auto. Controls 2 fans. Cool-down timer
Power loss calculator Calculates engine power / torque from wheel power
Measurement and Display
Power display resolution 0.1 kW (0.1 HP)
Tractive effort display resolution 10 N (1.0 lb)
Force measurement Precision electronic shear beam load cell
Interface Vac pressure boost*
Inlet air temperature
High speed Air:Fuel ratio/Lambda*
Thermo-couple inputs*
Auxiliary inputs*
Fan control
Tachometer Multiple inputs (refer to tachometer documentation)
Atmospheric Correction Screen Inlet air temperature
Ambient temperature
Barometric pressure
Relative humidity
Mechanical efficiency (Dyno  Dynamics ATMC2 only)
Resultant correction factor
Bar Screen  
Date, time Used to date and time stamp  reports
Customer name 35 characters
Test details "Poor economy, low power "etc.
Vehicle identification Vehicle registration, license,  race number etc
RPM:Road speed ratio Derived from ignition system, vehicle ECU, roller speed,  injector, optical pick-up*
Power Analogue bar & digit: kW (HP) [0.1 kW (0.1 HP)  resolution]
Tractive Effort Analogue bar & digit. N (lb) [1 N ( 0.1 lb) resolution]
Speed Analogue bar & digit. km/h (MPH) [0.1 km/h (0.1 MPH)  resolution]
Inlet air temperature Degrees C (F) [0.1 resolution]
Fuel mixture* Petrol (gasoline), LPG  (propane), alcohol, diesel Air:Fuel ratio and Lambda [0.1 AFR/0.01 Lambda  resolution]
Manifold vacuum/boost* Metric and imperial units. Gauge & absolute reference
Engine RPM Ignition, ECU, roller, optical pick-up*
Engine torque Nm (ft lb) 
Range of user definable inputs Temp, volts, pressure drops, TPS, etc
Graph screen  
Road power kW (HP)
Road tractive effort N (lb)
Road speed km/h (MPH)
Run distance km/h (mile)
Engine power kW (HP)
Engine torque  Nm (ft. lb) 
Engine speed RPM
Fuel mixture* Petrol (gasoline), LPG  (propane), alcohol, diesel Air:Fuel ratio and lambda
Vacuum / boost* Metric and imperial units. Atmospheric & absolute reference
Time Seconds
User defined inputs Up to 4
Coast-down correction Based on coast-down test
Drive-train loss Based on coast-down test, ShootOut specification loss
Auto Graph SnapShot Triggers SnapShots at user defined road speed or engine  speed  interval
Large Digits on graph screen  
Air:Fuel ratio Air:Fuel ratio or Lambda
Vacuum / boost* Metric and imperial units. Atmospheric & absolute reference
RPM Derived from ignition system, ECU, roller speed, optical  pick-up*
Graph Types Full screen: Diagnostic and performance graphs
High resolution
Step ramp (user definable step)
Step graph
Snap graph
SnapShot Screen Data acquisition of values defined by user
User definable recording
Work performed
Work history    
Test Modes
Constant speed mode Dial in the desired speed 
Constant load mode Dial in the desired load
Ramp mode Ramp Up-Hold-Down. Dial in the desired acceleration
Cooling fans
Range of cooling fans depending on country of  installation
Cooling fan control*
Software Software: independent control of two fans (or other devices):
On-Off-Auto Programmable cool-down timers
Command Module Manual fan control over-ride
Electrical Supply - (Varies with country and region of installation, refer  factory)
Australia Dynamometer: 415V 50 Hz
Fans: 240 - 250 V  single phase / 415V three phase 
Europe Dynamometer: 380 - 415 Volt three phase 50 Hz 
USA Fixed installation 220 -250V two phase 60 Hz
Shipping weights and dimensions (Approximate) 
Dynamometer chassis crated - Crate 1
1,215 kg 1,380 mm x 910 mm x 3,130 mm
2,675 lb 54.3" x 36" x 123"
Crate 2
1,215 kg 1,380 mm x 910 mm x 3,130 mm
2,675 lb 54.3" x 36" x 123"
AWD/4WD cabinet and control system
285 kg 790 mm x 880 mm x
1900 mm
630 lb 31" x 34.6" x 74.8"
Small cabinet and control system (computer monitor not included)
200 kg 790 mm x 880 mm x
1400 mm
440 lb 31" x 34.6" x 55"

* Denotes Optional 

Note 1: Assumes 600 mm (23.5") tyre diameter
Note 2: Assumes max torque occurs @ 3,500 RPM
Note 3: Assumes sufficient traction
Note 4: Distance between outer roller ends
Note 5: Distance between inner roller ends

 Due to Dyno Dynamics commitment to ongoing research and development, specifications may  change  without notice.