I am new to the HD world and my experience of dyno's apply to automotive chassis & automotive engine stand dyno's . Would anyone know the Brand & Model of the typical dyno that is used on motorcycles. Since the Most important question I have is if the models used are Inertia (free wheeling drum) or Eddy current (pony brake/water brake) I was hoping to find out what most shops use on bikes. I wanted to do some research on measuring techniques and standards in testing & how they compare with automotive standards. Tks Hoop!