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Berkshire Rolling Road
Dyno Dynamics 4 Wheel Drive Rolling Road
4WD Rolling Road chassis dynomometer
at Subaru4you in Berkshire, South England

On Site Remapping
Please check our news page
for when the next mapping day is due

The rolling road is currently out of commission
pending building works/move to another unit.

4WD Dyno Dynamics 4WD Rolling Road

Dyno Dynamics 4WD Rolling Road

Pictures are Clickable to enlarge

Goto Prices

Goto Gallery Pictures

BHP vs Torque explained We try to explain in simple [as simple as possible] terms

4WD Dyno Dynamics 4WD Rolling Road 4x4 rolling road

four wheel drive rolling road ,4-wheel drive rolling road

Manufacturer
Dyno Dynamics

Model
450 DS 4WD Rolling Road

Specification
2 wheel and 4 wheel drive rolling road chassis dyno test cell has the potential to run to 200mph with 1200 wheel horsepower handling.

Cooling
Huge cooling fan capable of moving 33000 cubic feet of air per minute.

Measures:
Power and torque at wheels, power and torque at flywheel, air fuel ratio, air intake temperature, ambient temperature, barometric pressure, boost pressure, road speed.

Why?
We invested in our Dyno Dynamics 4WD rolling road so that we could create the best possible performance upgrades safely and legally and have the ability to live remap ECU's in house. The Dyno has the ability to hold load which allows us to precision tune an engine. The rolling road also serves as an excellent diagnostic and data logging tool.

This is a trusted dyno dynamics quality 4WD Rolling Road dyno. The Dyno Dynamics 4WD rolling road is regarded as being one of the most accurate chassis dyno's in the world. They have now become the industry standard. An independant testing of 4WD rolling roads by Performance Tuner Magazine put the Dyno Dynamics Rolling Road as the most accurate.
1) Accurate, repeatable wheel horsepower figures
2) Eliminate tyre slip on the rollers with the unique roller and strap-down design.
3) Safe, controlled tuning environment
4) Capable of measuring up to 1200 wheel horsepower
5) 2 or 4wd, manual or auto capabilities
6) ShootOut mode allows for accurate results that are comparable worldwide as it eliminates any possibility of manipulating horsepower figures. Shoot-Out mode was developed by Dyno Dynamics primarily to eliminate "Operator Technique" and as a tool for measuring horsepower accurately and CONSISTENTLY for ALL Dyno Dynamics 2WD and 4WD Rolling Road dynos" (so no more wondering whether the results have been "fixed").

Prices

Rolling Road Power & Diagnostic Runs
Our rolling road is just perfect as an advanced diagnostics tool and data such as Power, Torque, Boost Pressure, Air Fuel Ratio etc. can all be logged and at the end you'll receive print out showing all these values. The charge for this is just £50 + VAT Ring for block booking/group buy.

Remapping Sessions and discounts.
Remapping 4WD rolling road sessions can be booked in conjunction with the regular visits by a remapper. The charge for a rolling road remapping session is £75 + VAT per hour (excluding the remapping, see the remapping page for charges). We provide a fully trained Dyno operator and access to the machine, including sensors and data software. If you book a rolling road remapping session and remapping with us on a pre announced mapping day then you receive a 10% discount on the 4WD rolling road session. If you have a already booked with your own mapper then why not meet him at our rolling road?

Mappers, ring for hire prices and block booking.

Dyno Dynamics in action:

Some bigger HP cars on Youtube

1895 HP at the rear wheels, one of the worlds most powerful street legal car

25 Jan 2008 Craig Munro wins 2008 Summernats Horse power Hero in Canberra Australia 1895 BHP

10 Nov 2007 Brett Waines VH Commodore. Rapid8 V8 Twin Turbo Running Pump Fuel (Shell Optimax.) 1470hp @ the wheels

BHP vs Torque explained We try to explain in simple [as simple as possible] terms

Specifications
Dyno Dynamics - AWD 450DS Chassis Dynamometer (Rolling Road)
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
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	675 kW (900 HP)
Max. tractive effort graphing	20,700 N (4,650 lb)
Max. roller torque graphing	2,250 Nm (1,650 ft lb)
Max. axle torque graphing (Note 1)	6,150 Nm (4,500 ft lb)
Max. engine torque graphing (Note 2)	2,100 Nm (1,500 ft lb)
Max. power steady speed	450 KW (600 HP)
Max. tractive effort steady speed	13,800 N (3,100 lb)
Max. roller torque steady speed	1,500 Nm (1,100 ft lb)
Max. axle torque steady speed (Note 1)	4,100 Nm (3,000 ft lb)
Max. engine torque steady speed (Note 2)	1,400 Nm (1,000 ft lb)
Max road speed	200 km/h (120 MPH) - 250 km/h (150MPH)*
Rear Axle	Standard	Rear Aux retarder/PAU*
Maximum power graphing	675 kW (900 HP)	1,350 kW (1,800 HP)
Max. tractive effort graphing	20,700 N (4,650 lb)	41,400 N (9,300 lb)
Max. roller torque graphing	2,250 Nm (1,650 ft lb)	4,500 Nm (3,300 ft lb)
Max. axle torque graphing (Note 1)	6,150 Nm (4,500 ft lb)	12,300 Nm (9,000 ft lb)
Max. engine torque graphing (Note 2)	2,100 Nm (1,500 ft lb)	4,200 Nm (3,000 ft lb)
Max. power steady speed	450 KW (600 HP)	900 kW (1,200 HP)
Max. tractive effort steady speed	13,800 N (3,100 lb)	27,600 N (6,200 lb)
Max. roller torque steady speed	1,500 Nm (1,100 ft lb)	3,000 Nm (2,200 ft lb)
Max. axle torque steady speed (Note 1)	4,100 Nm (3,000 ft lb)	8,200 Nm (6,000 ft lb)
Max. engine torque steady speed (Note 2)	1,400 Nm (1,000 ft lb)	2,800 Nm (2000 ft lb)
Max road speed	200 km/h (120 MPH) - 250 km/h (150MPH)*
Both Axles	Standard	Rear Aux retarder/PAU*
Maximum power graphing	2,000 kw (2,700 HP)	2,000 kW (2,700 HP)
Max. tractive effort graphing	41,400 N (9,300 lb)	62,100 N (13,950 lb)
Max. roller torque graphing	4,500 Nm (3,300 ft lb)	6,750 Nm (4,950 ft lb)
Max. axle torque graphing (Note 1)	12,300 Nm (9,000 ft lb)	18,450 Nm (13,500 ft lb)
Max. engine torque graphing (Note 2)	4,200 Nm (3,000 ft lb)	6,300 Nm (4,500 ft lb)
Max. power steady speed	900 kW (1,200 HP)	1,350 kW (1,800 HP)
Max. tractive effort steady speed	27,600 N (6,200 lb)	41,400 N (9,300 lb)
Max. roller torque steady speed	3,000 Nm (2,200 ft lb)	4,500 Nm (3,300 ft lb)
Max. axle torque steady speed (Note 1)	8,200 Nm (6,000 ft lb)	12,300 Nm (9,000 ft lb)
Max. engine torque steady speed (Note 2)	2,800 Nm (2,000 ft lb)	4,200 Nm (3000 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
Exit Brake	Electromagnetic roller exit brake
Bearings	Standard	Aux Retarder/PAU*
	10	12
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)	Standard	Aux Retarder/PAU*
	2.590 kgm2 (61.5 lbft2)	3.566 kgm2 (84.6 lbft2)
Bed equivalent inertia (typical)	219 kg (483 lb)	302 kg (665 lb)
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
Dyno Dynamics All Wheel Drive AWD/4WD Phase 3 computerised control system
• AWD/4WD control system, electronics and software • AWD/4WD Smart system • Computer* • Wireless (cordless) keyboard • Colour ink jet printer • Hand held Command Module • Heavy duty steel cabinet • Automatic fan control • Large digit and bar graph displays • Power, tractive effort, speed,Air:Fuel/lambda etc. • Vacuum/boost display • Constant speed mode (Dial in the speed you want) • Constant load mode (Dial in the load you want) • Ramp mode (Dial in the acceleration you want)