2″ Fowler Cylinder

2″ Fowler Cylinder

This topic has 5 replies, 2 voices, and was last updated 9 June 2010 at 22:43 by DRG MIMechE.

Viewing 6 posts - 1 through 6 (of 6 total)

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19 January 2010 at 00:28 #47547
DRG MIMechE
Participant
@drgmimeche
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.
Advert

19 January 2010 at 00:28 #2679
DRG MIMechE
Participant
@drgmimeche
19 January 2010 at 07:49 #47548
JasonB
Moderator
@jasonb
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
8 June 2010 at 19:07 #52526
DRG MIMechE
Participant
@drgmimeche
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.>>
8 June 2010 at 20:10 #52527
JasonB
Moderator
@jasonb
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
9 June 2010 at 22:43 #52553
DRG MIMechE
Participant
@drgmimeche
Thanks for your help Jason i will try that.
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