Evening all.
In my workshop I have a Lister 4 cylinder diesel, air cooled 3 phase Altern ator I think it must only have two poles as to get 50 Hz it seems to run fa r too fast and makes far too much noise in so doing.
It is at least twice as powerful as I would ever need and I often use it at about half revs at which speed it still generates enough to run an old Mil ling machine, However It would be very nice it I could run the diesel at t his low speed and still get 50 c/s and the correct voltages. It is skid mo unted, bolted to the floor on a heavy chassis but the engine and alt. are c lose coupled. I was toying with the idea of separating them and hooking up a chain shaft drive behind the set to gear the motor speed down by at least half.
This will be a big job I fear, as they are very close together and it might be necessary to move the engine to the right a bit to enable sprockets or even pulleys to be connected to gear down the alternator. Has anyone ever done this and has anyone any simpler lateral solution.
Or - alternately does anyone wish to swap a noisy 40 Kw set for a nice quie t 15- 20 Kw set ?