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2" Fowler Cylinder

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DRG MIMechE	19/01/2010 00:28:43
6 forum posts 3 photos	Hi Has any body machined the new cylinder from M.J.Eng ? The anulus is part of the casting but only runs half way round when you come to drill the two holes from the regulator chest 3/16" from the drawing only one hole enters the anulus. I spoke to MJ and they said the casting had changed but were not sure what could be done and would get back to me. I could only think the anulus would have to be machined out all the way round or maybe a bigger hole in the regulator chest. The old casting i believe you had to machine the anulus in anyway.
JasonB	19/01/2010 07:49:25
25215 forum posts 3105 photos 1 articles	Drill two holes on the oposite side to the valve chest, one to the front of the regulator the other to the rear. You can see how I did Mine including the one that I stopped part way through drillingas I felt it was going to cause problems. I did turn a shallower annulas on mine to reduce the friction when inserting the cyl liner, about 0.004" I'll pm you later, off to work now Jason
DRG MIMechE	08/06/2010 19:07:33
6 forum posts 3 photos	Hi >> I was hoping that I could get some more advice on the 2" fowler cylinder. I drilled the 6 holes at each end which break through to the inlet ports in the valve chest, and the drawing says to recess them 3/32 on the top of the cylinder. The cylinder cover has a 3/32 lip which locates into the bore, this seems to close off the recess. Any help would be appreciated.>>
JasonB	08/06/2010 20:10:43
25215 forum posts 3105 photos 1 articles	You need to mill away part of the spigot on the cylinder covers to allow the steam to flow through. I think I did mine 1/16" deep and 1/4" in from the edge Jason
DRG MIMechE	09/06/2010 22:43:23
6 forum posts 3 photos	Thanks for your help Jason i will try that.

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