[HAM] Leslie motors and oiling

[Dave Bishop]

I'm just trying to describe my experience.  A dry motor usually brings the 
pitch of the TWG down uniformly, but dry (but working) tonewheels don't drag 
uniformly, so that some harmonics that are running smoothly tend to stay at 
pitch and the others drag at varying rates, causing a sort of hunting, or 
warbling, or nausea.  I don't know what words accurately describe the sound 
of a dry TWG-- there is always some ambient mechanical sound, but a dry TWG 
has more of it and its higher pitched.  Sort of like the difference between 
a hum and a swish.  A dryer TWG will gergle, and a frozen TWG will squeal. 
A well-oiled Hammond in a quiet room is moderately noticeable.  A dry organ 
can be heard from across the room.  YMMV.

Regards,

Dave Bishop