Bapro product Series (Standard – High Performance)
S Series (Standard) , especially designed for car/motorcycle workshops, suitable for lower HP vehicles applications or common diagnosis usage. HP Series (High Performance) dynos, dedicated to highest HP vehicle tuning applications and research and development dpts. All measure values are automatically standardised to international standards.
Tubular Frame
Powder coated (customizable color) tubular frame in high strength steel. Allow to test high power heavy vehicles ensuring steady measures over time. Pro: Maximum strength with minimum flexure (and vibration proofing) compared to the competitor’s sheet metal frame.
Steel structure
Tubular frame, long lasting structure, high quality vibration proofing equilibrated components for the best accuracy. Moreover, our dynos are always ready to be upgraded from the pit version to the above ground version.
Eddy Current Brake
Allow to perform load tests and fixed rpm (speed). Pro: the brake and the rollers are mounted in the same frame, this is conceived to withstand the power of the ultra highpower vehicles.
Remote Control
Operating system free. Allow to perform any tests without stopping the vehicle.
Built-in Weather Station
Pressure–temperature. Allow to measure the weather conditions. Bapro dynamometer corrects the power reading in real-time according to different standards (different systems from S to HP Series)
Management Software
Allow to perform, save, compare and print the tests. Pro: Updated, complete (no add-on or extra charges), particularly easy and intuitive, with analogue and digital gauges. It works without mouse and by remote control. Compatible with the present and future Windows operating systems. It doesn’t need a dedicated computer and it works on the notebooks too!
Possible Tests with our test benches
• Braked tests: constant rpm, constant speed, constant load , Steady state RPM
• Power and torque controlled acceleration measurement (sweep test)
• Road Simulation (straight, uphill, aerodynamic drag, vehicle mass)
• Measurement at steps of power and torque
• Diagnosis under load in road conditions
• ECU mapping at all engine speeds
• Endurance tests and final tests
Bapro provides customized products on demand,
contact us for any question at enquiries@77performance.co.uk
Theory of chassis dynamometers
Principles of the braked chassis dynamometer (equipped with eddy current brake and load cell)
The power and torque detection point of Bapro dynamometers is in the crankshaft. Detection is carried out on a complete vehicle and under normal operating conditions.
With braking bench testing (controlled), a more precise and representative measurement of the actual power of the vehicle being tested is obtained as a result of the eddy current brake. It is a much more accurate test than those guaranteed by traditional test benches, such as ‘inertial’ ones. Chassis dynamometers are, above all, distinguished by the option of setting the “ramp time” (usually never less than 15 seconds), or performing it in “points” for a given range of revolutions/time, in order to obtain more reliable results, adapting to any type of power or torque. These measurements must usually consider different dispersions of the transmitted energy in order to accelerate to the actual power to the crankshaft. These dispersions have different origins, just think of all the surfaces in contact with the engine (bearings and bushings) that enable rotation, the gear system (with continuous /automatic variation), transmission oil (if applicable) and end transmission, as well as from the tyres.
The main principles for correct operation (and guarantee of measurement precision) of the eddy current chassis dynamometer have different factors which, when carefully controlled, enable:
the lowest overall inertial mass (which enables better power acceleration precision to the crankshaft)
no vibrations (that can affect readings and communication between test bench and output signals)
maximum wheel/roller grip (slippage and micro-slippage would not enable correct reading of the vehicle’s power)
no uncontrolled resistance (which could affect the overall inertial mass, thereby distorting data)
Compliance with these requirements, integral development of products and their optimisation, the sole use of high quality components and specifications and attention to details, have always been the guiding principles at Bapro.
Decades of collaboration with large companies in the automotive industry, such as Magneti Marelli, Ducati and Maserati, have allowed us to develop specific skills in their research and development departments. Today, this results in the quality and reliability of our products, which are constantly updated to meet demands.