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Dyno Rolling Road

Our 4 wheel drive Mustang Chassis Dynamometer was purchased in late 09 from our ECU tuning software partners Mynes Performance.

This Mustang dyno is unique in that it has 42 inch diameter rollers which only stick above the floor 45mm, so far we haven't had to take any bumpers off yet. The rollers are also knurled and so far we haven't had any real traction problems even with the nitrous activated on Old Red.

The dyno gives us the ability to simulate actual road loads while the vehicle is stationery. This enables us to perform tests on your vehicle while test diagnostic instruments are connected to the vehicle's engine and exhaust system.

Dyno Hourly Rental (tuning allowed)

2WD - £60/hr plus vat

4WD - £80/hr plus vat

Dyno rental subject to approval. After first complete hour, time can be billed in half hour blocks.

Power Runs (no tuning allowed)

2WD - £40 plus vat (3 dyno runs)

4WD - £60 plus vat (3 dyno runs)

Healthcheck for MINI's

3 runs including compression & leakdown test: £70 + Vat

How does a Mustang Dyno work ?

The Dynamometer consists primarily of a drive roll set, a power absorbing unit (PAU), a load cell, and a speed encoder. During operation of the Dyno, the vehicle's drive wheels on top of the rolls. The vehicle's torque is transmitted through the rolls to the eddy-current Power Absorbing Units (PAUs). The PAUs are mounted behind rolls and are belted to the dyno's drive line. The PAUs are prevented from "freely" rotating by the installation of a load cell. The "load" is measured by the load cell and is transmitted to the control system via an electrical signal. The PAU absorbs this load by energizing stationary electric field coils with a direct current. These coils establish magnetic fields through which the iron rotors of the PAU are rotated. This rotation generates eddy-currents in the rotors which produce a force that is counter to the direction of the rotary motion. The power absorbed by the PAU is dependent upon the amount of DC power applied to the field coils and the RPM of the spinning rotors. The speed of rotation of the rotors is measured by a magnetic device called a mag pickup and is transmitted to the control system.

When both torque (from the load cell signal) and speed (from the mag pickup signal) are known, horsepower can be easily determined.