The device that you see on these Prosilver arms, Are not the same as the Power Trix devices on Brood Motors. If you look closely at the difference between the two the Prosilver doesn't connect the comm plates like the Power Trix devices. It's unlikely that the Prosilver devices will use the resudual voltage from the colapsing coil to increase the voltage to the energizing coil. IMO
Retired from sponsored racing, Now just having fun.