----- Original Message ----- From: Bill Lane . . . . .. Since I don't have a S12 I never got any. I thought the slower speed came somehow from a double worm. > > > > It does. See my article in the Modelling Guide of many years ago. << < < It never occurred to me it was something as simple as the angle of the worm. > > > > It's not. Don't see how that could work.
Tom Hawley -- Lansing Michigan
