I just purchased an old (1940s?) Ludwig vibraphone. It has a Bodine motor with an attachment that looks to me like a friction speed control. There is a knob you twist that presses a felt pad against a spinning disk to, I guessing, slow the motor and change the speed of the rotation of the butterflies. There are some other parts on the motor shaft that I think are heat sinks. I am thinking of cannibalizing the Ludwig to use the motor on another vibe set I have (can't tell you what it is because I bought it used and it has no identifying marks of any kind). My adaptation of the motor would involve removing the manual speed control (if that's what it is) and using just the motor in the other vibes. My question is, is this Bodine motor some rare item that might be of great value to someone, in which case I shouldn't be cannibalizing it, or is ut just an old relic whose only value is that it's still working?