http://uk.groups.yahoo.com/group/halfinchlivesteamforum/ Half inch live steam forum - Devoted to 2.5" live steam locomotives Wed, 24 Jun 2009 12:01:00 GMT graham9238 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1020 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1020 Thanks John. 3-1/4" minus 1/8" for the wrapper gives 3-1/8" for the width of the throatplate. Making a 3-1/16" hole in this would leave the flanges only 1/32" Tue, 23 Jun 2009 23:33:49 GMT John Baguley http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1019 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1019 Hi Graham, The construction notes on the Dyak boiler are pretty vague as LBSC refers back to the boiler for Annie Boddie all the time. The boiler barrel is Tue, 23 Jun 2009 21:18:39 GMT graham9238 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1018 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1018 I'm attempting to build a Dyak Boiler, but have run into problems with the dimensions on the Kennion's drawing. The smoke box is shown as 3 1/4" OD and it Sun, 21 Jun 2009 22:34:07 GMT myfordmatt http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1017 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1017 How right you are - there was me forgetting I need two frame plates! Sun, 21 Jun 2009 22:29:50 GMT R.L. Roebuck http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1016 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1016 ... Oooh, careful - assuming you're leaving the back to back wheel dimension the same, then all of the extra width of the frames needs to be accomodated Sun, 21 Jun 2009 22:19:48 GMT myfordmatt http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1015 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1015 Many thanks John LBSC gives the Pansyette cylinder block a width of 1-15/16", which coupled with a couple of frames at 3/32" provides a reassuring 2-1/8". (If Sun, 21 Jun 2009 20:17:33 GMT John Baguley http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1014 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1014 Hi Matt, Welcome to the forum! The Association do list a photocopy of the 'articles' for Pansyette but I think they will just be copies of the ME articles that Sun, 21 Jun 2009 19:47:17 GMT myfordmatt http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1013 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1013 Hi everyone I've just joined, and I'm looking for some advice. I'm currently building a 5" Pansy, but I quite fancy making its little sister Pansyette. Three Fri, 29 May 2009 02:14:05 GMT Charles Mortimer http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1012 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1012 hallo David nice bike haven't been on one of those since i was a nipper if your crank-case is good i.e. not warped not really necessary , no science in Fri, 29 May 2009 00:03:51 GMT Simon Wass http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1011 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1011 What is it, an oil return? Not sure on material, you can get cheap natural rubber rings, or silicone, or viton. The cheap rubber ones are better with oils than Thu, 28 May 2009 23:49:33 GMT John Baguley http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1010 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1010 Hi David, You're only looking at a simple low pressure static seal so as long as the O ring is compressed when the 2 halves are bolted together you shouldn't Thu, 28 May 2009 21:25:23 GMT david_steam http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1009 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1009 Ok I will come clean, its for a Royal Enfield 250 cc engine. The two crankcase halves have a 3/16 passage for (I think a low pressure return) are just butted Wed, 27 May 2009 12:41:06 GMT Simon Wass http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1008 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1008 Your experience of using o rings is totally opposite to that I experience. I only use red or white silicone rings and they have quite a good stretch and Wed, 27 May 2009 07:19:10 GMT John http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1007 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1007 Also remember the "rubber" or elastic material of an O ring is not compressable like convential packing. So the cut out for the ring must be wide enough to Tue, 26 May 2009 12:35:25 GMT Simon Wass http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1006 http://uk.groups.yahoo.com/group/halfinchlivesteamforum/message/1006 A rough figure is to 'assume' the o ring is 0.0625 dia which it isn't, a 1/16" o ring is 0.070" section so you get a bit of nip. Basically I adjust to suit