Reply To: Ex Air ministry Alcon Pumps

[davidbliss]

What you need is a small two stage fire pump so pressure not volume, I was always at Knights engineers for anything from re-bores to any type of shaft grinding, they had a small splined shaft that had been hard chromed in places and was set up for grinding it back. They said here you are guess what sort of engine and hp drives onto that shaft, well I thought looking at the shaft at a guess thought like about a MK25 Villiers of hp rated, I was a bit out and had un-knowingly seen it at work, 900RPM 5 cylinder Gardener driving a large multi V belted pulley down to a small pulley that must have given a 5-1 ratio done for irrigation at Blooms nurseries. Two stage is the way to go, I have a 50s Stuart 3/4 inch motor .5 HP at 2800RPM head and GPH should be there but couldn’t find it and think the head was well up with the Alcon.