After mixing different viscosity silicone oil, and comparing it to the oil Townshend sells as " Trough fuel" i think his oil is somewhere in the 50,000 CST range. 100,000 CST is much thicker than his oil, and 10,000 CST is much thiner. The Maplenoll Ariadne Signature that i use was copied and modified by Walker when he made his first TT’s, he did move the silicone trough to the back of the arm, some people are not comfortable with the oil filled trough hanging over their records, and the extra step that using it entails.
And yes the original pumps used on the Maplenoll TT,s where noisy and smelly, they where modified refrigerators pumps. My arm runs best with about 45 PSI and the bearing uses about 5 PSI, i use a oil-free shop compressor with a 100 L tank, its starts up and runs 1 min every half hour, and is noisy as hell, but is in its own isolated room far away from the listening room.
And yes the original pumps used on the Maplenoll TT,s where noisy and smelly, they where modified refrigerators pumps. My arm runs best with about 45 PSI and the bearing uses about 5 PSI, i use a oil-free shop compressor with a 100 L tank, its starts up and runs 1 min every half hour, and is noisy as hell, but is in its own isolated room far away from the listening room.