In most Braked dynamometers, the brake is installed over bearings and only the load cell prevents it to turn. Then the brake torque is converted to a linear force in the load cell as a result of the TQ / Lever (meters) formula. Note that torque can run in both directions, but normally we would …
Despite theis higher complexity and cost, typically braked dynos use Hollow Rollers because the capacity of having longer axles, which are necessary for connecting the rollers between them (car dynos) and with the brake. Car dynamometers can also use hollow rollers for inertial dynos because it is necessary to connect them in pairs. Advantages of …
Typically we use solid rollers for inertial dynamometers, specially for Motorcycle dynamometers due to its extreme simplicity. They can be used for car dynamometers although the amount of steel to be removed to create longer axles (in order to connect each side roller) may be a bit high, which makes more time and money costly …
