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Post by Deleted on Sept 1, 2011 13:27:19 GMT
Afternoon guys As you can see I've finished the riveting around the smokebox, since I couldn't get a hammer to the inside due to the rim I decided to solder the rivets in place and for added security sealed the inside with silicone . I think before I go any further with the smokebox pipework I'll make up some plugs to block off the boiler fittings holes etc, fit the dome and then get the boiler hydraulically tested down the club. Now would also be a good time to machine up some new trailing axle boxes as one is missing . Once I've done all of that I guess next will be the superheater and associated pipework. Pete Attachments:
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Post by Deleted on Sept 2, 2011 19:52:08 GMT
First of all, thanks for the comment Pondok.. Ok small update for today, I want to get the boiler hydraulically tested ASAP and the main job needing doing first was to machine and fit a dome cover. Picture shows the inner surface being machined after having first machined the top and drilled/tapped a 3/16x40T centre hole. Once parted from it's spigot it was moved to the rotary table for 8 fixing holes to be drilled every 45 degrees of course. Attachments:
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Post by Deleted on Sept 2, 2011 20:05:16 GMT
Once finished on the rotary table I placed the cover on the dome bush held with double sided tape and carefully transferred the holes one at a time to the bush. Each hole was centred, drilled , tapped and then the cover fitted to hold it in position for marking the next hole, a long job but worth it for getting all eight holes lined up properly. The boiler sat level on the mill bed without being clamped during this operation relying on it's weight and a delicate hand to keep it steady. So all I have left to do before the hydraulic test is to make up some plugs to fit the back head, superheater, dome plug and safety valve holes. I plan to ask at the club on Sunday for a date to do the test, hopefully this won't be to far in the future as once that's done I can really get stuck in... Pete Edit: I forgot to add I also cut a 1/32nd paper gasket to help in sealing the cover, not sure if this is the way to seal the cover or not but seemed better than nothing? Attachments:
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Post by Jim on Sept 2, 2011 21:43:40 GMT
Great to see the progress Pete in getting Heilan Lassie back into running order but when do you sleep? Then of course there's FS and the teak carriages waiting in the wings. I have to have a rest after just thinking about the next job Anyway sleep or not you have a great thread running...well done. Jim
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Post by Deleted on Sept 9, 2011 18:08:39 GMT
Hi Jim.... Er sleep, what's that?? Ok well I took the boiler up to my club last Sunday for the inspectors to have a look over , the consensus was that it's a well built boiler and shouldn't have any problems passing it's hydraulic test. I couldn't do it that day as I still had some plugs to make up which at the time I didn't have any dies for. However I have now made up all of the plugs and hope to get the test done this weekend. So in the meantime I've been doing some work on completing the superheater that had ready been started by the original builder. As can be seen in the picture I connected the cylinder steam pipes with silver solder to the hot header. The hot header having already been drilled ready for fitting to the superheater pipes by the previous owner and I have to say he'd done a nice job on it too. Attachments:
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Post by Deleted on Sept 9, 2011 18:27:24 GMT
However as can be seen here the silver soldering work that had been done left a lot to be desired. Before brazing the hot header to the superheater pipes I checked the wet header and it's pipework for leaks in water using compressed air, there was a leak on one of the 4 pipe return connections that sits at the end of the tubes in the combustion chamber , this was a simple matter of cleaning up the joint and re-brazing it, no leaks now. The wetheader doesn't look pretty and I won't really know if it's good enough for steam until the first time she's fired up but I don't fancy remaking what the guy has already done so have decided to ... Er trust in the work done so that I won't waste time remaking something that may be fine anyway, even if it doesn't look very pretty.. Now I've left the steam pipes over length ready for fitting through the smokebox once the boiler has it's hydraulic test, I've ordered some 1/4" nipples ready for soldering to the pipes but could do with dome advice as to the correct fittings to fit here. I know that I'll have to make up the fittings from the steam chest covers themselves but what fitting do I need for the smokebox outlets or do I need to make these as well? To save time I'd rather buy what I need than have to make them, so to make life easier what do I need please guys Cheers Pete Attachments:
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Post by Deleted on Sept 11, 2011 16:26:38 GMT
One picture today... Didn't get time today for doing a hydraulic test so that I could get on with fixing the smokebox and boiler to the frames. But I have now arranged a time with one of the club boiler inspectors for doing a proper test next weekend and hopefully Lassie will gain a 4 year hydraulic certificate. In the meantime I was asked to measure the boilers water capacity ready for the test. A test will be done again just before steaming to check fittings extra , doing one first before fitting to the frames I'm told is a good idea just in case. Pictures shows the boiler having been filled up to the dome ring, capacity is 3.25ltrs with no leaks and of course no pressure too, but hey it's a start... Pete PS: it was great to meet John ( jj) at the track today and to be treated to a ride on his beautiful 5" Brit which ran perfectly... Many thanks John.. Attachments:
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Post by Deleted on Sept 18, 2011 17:39:20 GMT
Evening all Just a technical update really but a big step forwards for me. Thanks to Ron at the club I now have a 4 year hydraulic certificate for HL , with this done I'll now proceed with the plumbing and the fitting of the boiler to the frames. If I can get hold of the fittings required a steam test won't be to far away....getting ever closer to the big day..... Pete Attachments:
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Post by Deleted on Sept 22, 2011 17:06:16 GMT
Good day all So while I was waiting for all the plumbing and associated boiler fittings to arrive I thought it best to get the trailing axle sorted. There was an axle box missing so first job was to machine a new one. I bought the casting stick and decided to remake both rather than just the one missing. Here you can see one of the slots being machined after first machining the casting to size. As per normal practice both axle boxes are cast together for splitting later once most of the machining has been finished. Attachments:
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Post by Deleted on Sept 22, 2011 17:11:38 GMT
Next job was to part the two boxes and then machine to final size. A 1/4 hole for the axle was then drilled in each box 9/16 down from the top edge followed by a small oil hole as seen in the picture.. Attachments:
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Post by Deleted on Sept 22, 2011 17:15:51 GMT
Final job for today was the cleaning and painting of the trailing wheels and then fitted to the frames. I still need to replace the nuts on the spring tensioners and make some new retaining pins holding the axle boxes. Attachments:
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Post by Deleted on Sept 22, 2011 17:27:39 GMT
This is a shot showing progress to date, today I received my order for all of the boiler fittings and pipework, hey I even have a whistle.. So tomorrow the boiler will be taken off again and the chassis re-attached to the building stand. Hopefully it won't take me too long to get everything connected, steampipes,oil pipes and all water connections. I guess once that's all done I'll arrange for a steam test at my MES.... can't wait..... Pete Attachments:
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Post by Deleted on Sept 23, 2011 17:31:23 GMT
Busy day.... First job was to install a new axle pump, I decided it was best to replace the existing pump as I didn't fancy having to redo this part if the pump proved to be faulty. John (Baggo) kindly drew up a diagram for the plumbing to replace LBSC's design that had the injector sharing the same clack as the hand pump. Here is a pic from underneath, I may reroute these pipes over the traing axle later once I have all pipes fitted. Attachments:
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Post by Deleted on Sept 23, 2011 17:34:58 GMT
Top view showing the by-pass valve pipe that's fitted under the cab floor and also the pipe ready for connection to the clack valve on the backhead. The tender feed pipe is also fitted although not visible here Attachments:
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Post by Deleted on Sept 23, 2011 17:36:44 GMT
Underside of the lubricator with 1/8 pipes fitted to the two clacks. Attachments:
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Post by Deleted on Sept 23, 2011 18:00:59 GMT
Top view showing oil pipes ready for clacks to be fitted before fitting to steam pipes. More soon Pete Attachments:
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Post by itsbluesteel on Sept 23, 2011 18:26:28 GMT
Hi Pete, looking good and i could never understand why you would share axle pump clack with injector, so i take it you will be shareing the axple pump with the hand pump? or are you able to sight 3 clacks?
Steve
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Post by baggo on Sept 23, 2011 18:33:48 GMT
Hi Pete,
Just a thought - are you intending to fit separate oil clacks to each of the outside steam pipes (after the Tee piece)? If so, you might have trouble with one cylinder getting all the oil unless the springs in the clacks are exactly matched, which is unlikely. The oil will take the easiest route.
John
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Post by Deleted on Sept 23, 2011 19:37:27 GMT
Thanks Steve, yes the axle pump will share the same clack as the hand pump thanks to John's greater experience with these matters... John yes I was planning on following Curly's design for the oil clacks but take your point about the springs. I was aware that the pressure needed to be equal hence why I have the tee in the middle. Is it ok to use one clack before the Tee to eliminate this problem, would be simpler pipework too? Pete
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Post by baggo on Sept 23, 2011 19:51:23 GMT
Hi Pete,
Yes, one before the clack is the way to go. I think that is how Curly meant it to be.
John
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