Eddy Current Absorber - Load Charts

The following graphs will help you determine if the absorber's load capacity vs. RPM curve is a suitable match for the engine to be tested*.

"For better control, the engine being tested should not be at the extreme high or low range of the absorber's capacity."

Important: These curves assume full current flow through the absorber. Lowering the power supply/controller's amperage output reduces the maximums shown accordingly.
*Actual air-cooled eddy current capacities are RPM and absorber temperature dependent. Initial cold rotor torque (foot-pounds) and Hp capacities are approximately twice the hot rotor Hp capacities shown below. Hot readings are after running about 10 minutes, at full load, in a room temperature environment. Continuous ratings will be approximately 50% of these hot values.

Tip: Both hot and cold curves are provided for air cooled absorbers. The cold numbers are for room temperature and the hot numbers will be reached within about 10 minutes of full capacity operation.

WARNING: These are only the magnetic limits for each absorber. They do not take into account any other mechanical limits imposed by the dynamometer's other driveline hardware.