regulator
watertower | 04/12/2012 14:22:19 |
10 forum posts 6 photos | new to this, 2nd posting could not my first post .
purchased a 21/2 gauge dairymaid , very well made , will need new boiler which i will be making , not a lot of information about for this loco i do have some mags from 1931 with some construction details , the question today is about the regulator " see picture " at the firebox end is a screw on cap , there are 6 small holes around the edge of this cap , air comes out of these holes when the regulator is open to let air to the cylinders , what is this cap for ? , also there is a hole just behind the chimney perfect fit for the cap to fit in , but should it sit behind the chimney where it can be seen ? , any info much appreciated , no doubt ill have more questions before its finished , thanks. |
mick H | 04/12/2012 14:49:12 |
795 forum posts 34 photos | Probably a "snifter" valve which has a ball inside and prevents a vacuum forming in the smokebox when the regulator is turned off ? Mick |
watertower | 04/12/2012 14:58:41 |
10 forum posts 6 photos | thanks for reply , cant read all you said got adverts in the way how do i get rid of them . |
KWIL | 04/12/2012 15:21:17 |
3681 forum posts 70 photos |
Here we go again! |
watertower | 04/12/2012 15:22:26 |
10 forum posts 6 photos | looks like this advert is a ongoing problem with no solution , the bit i can read say it may be a sniffer valve sounds right , the ball is missing will get a replacement , so it may sit through the hole behind the chimney would that be correct , much appreciate the advice given, thanks . |
Nicholas Farr | 04/12/2012 19:28:15 |
![]() 3988 forum posts 1799 photos | Hi watertower, I believe Mick is correct. I think you mean the smokebox end though. In LBSC's notes on his "Dairymaid" he says to follow suit with many of the big Dairymaids and use a Maunsel snifting valve each side of the smokebox and gives reference to his "Live Steam" book for the details, but he does say that one of them can be a dummy. However, on a previous page in his book, there are a few notes on snifting valves for 2.1/2" gauge engines and a sketch shows the one in you photo. he says they are the usual mushroom-head type and it shows it poking through the hole in the smokebox behind the chimney. It looks as if it is poking through by about twice the actual head height to the top of the head. The original "Live Steam" book was called "Shops, Shed, and Road." and the page numbers relate to this book, although the sketchs are in both. Hope this is of help. Regards Nick. Edited By Nicholas Farr on 04/12/2012 19:31:37 |
watertower | 04/12/2012 20:49:52 |
10 forum posts 6 photos | thanks for that informtion nick , having problems reading replies do to adverts having to guess some of whats written , im still not 100 percent sure this is the dairymaid , most things match then something dont seem correct , just measured from the back of smokebox to the pipe that goes up into steam dome , its 21/2 inch should be 41/2 , i do have the original boiler plan , im gonna load more pictures see what people think it is , thanks . |
watertower | 04/12/2012 21:04:53 |
10 forum posts 6 photos | changed from my pc with xp on to my laptop with vista , now i can read the posts , no advert problems great . |
modeng2000 | 04/12/2012 21:47:11 |
340 forum posts 1 photos | I'm using XP with Adblock and have no problems. John |
watertower | 04/12/2012 22:31:07 |
10 forum posts 6 photos | thanks john will try that . |
watertower | 05/12/2012 20:42:23 |
10 forum posts 6 photos |
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JC Uknz 1 | 07/12/2012 06:42:36 |
![]() 54 forum posts |
To get past the adverts encuirage people to reply and eventually you will reach below them like watertower's last post and this one Edited By JC Uknz 1 on 07/12/2012 06:43:24 |
JC Uknz 1 | 07/12/2012 06:44:30 |
![]() 54 forum posts | The idea crossed my mind that if one types short lines etc like this ... To get past the adverts encuirage people to reply and eventually you will reach below them like
watertower's last post and this one Edited By JC Uknz 1 on 07/12/2012 06:43:24 Edited By JC Uknz 1 on 07/12/2012 06:45:35 |
mick H | 07/12/2012 07:47:05 |
795 forum posts 34 photos | Watertower...this is probably going to sound crazy but is the steam pipe correctly assembled? It is difficult to tell from the photos whether the ends unscrew but if the regulator handle were where the snifter valve is and vice versa it looks as though the steam collector might be in the right place ! Mick |
watertower | 07/12/2012 13:24:16 |
10 forum posts 6 photos | thanks for reply mick , but no its threaded one side silver solder the other , its realley strange it must have been a complete loco at some stage but stripped to replace the boiler some one started but didnt complete it , all the bits off the boiler came with it , ive searched looking for another 4-4-0 loco that it may have been changed too but no luck , if i dont come up with a answer then ill just make the boiler with the dome in that position , thanks . |
watertower | 07/12/2012 13:29:19 |
10 forum posts 6 photos |
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