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| Building a Boiler for a 3 1/2" Gauge Locomotive |
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| sbwhart:
Hi Chaps I've been putting this off long enough. But first a warning:- boilers are pressure vessel and are dangerous they are not to be taken lightly, if they fail they can cause serious injury, so due care needs to be taken when you build one. Make sure you understand the boiler regulations that apply to your part of the world, and if you have no experience of boiler building, find someone who is that can guide and mentor you. I did a lot of research on boiler building, to some extent this was a mistake as I found a lot of contradiction in design and methods, to such an extent that I was seriously looking into buying a commercially made boiler, but this would have cost up to £1500, but I began to realise that methods and thinking have changes over the years and talking to club members and the clubs boiler inspector cleared a lot of the uncertainty up, and with encouragement I decided to have a go at building my own. To help you Guys to understand some of the term used in the UK I've done a Crap-O-Cad of the type of boiler I will be making. By way of explanation of some of the terms:- Stays:- addition support given to flat services Supper Heater Tubes:- these are large tubes through which pipe work runs that takes "wet steam" collected in the steam dome back through fire box to give it an extra dose of heat. Throat Plate:- front part of the outer fire box Foundation Ring:- This fills the space between the outer and inner fire box Front and Fire box Tube plate:- These are the plates that the Flue and Superheater tubes fit too. I think the rest of the bits are self explanatory. I bought a boiler kit for my Loco from Reeves it cost £290. This is the kit of parts. Everyone I've spoken to has given me the same bit of advise:- the key to good boiler making is in the preparation, so over the next week or two I'm going to spend some preparing for the build. The adventure begins Stew |
| shoey51:
I for one will be watching this build :thumbup: |
| Stilldrillin:
Yer a much braver man than me Stew! Good on yer! :clap: Hats off to you...... Good luck! :thumbup: David D |
| lordedmond:
sbwhart 1 make sure you have enough heat 42 mm burner or bigger 2 Check and triple check the drawings for foul up's I did a Doris and the drawing had the hole for the regulator shaft lower than the fire box wrapper :jaw: 3 you can use citric acid as a pickle best to use a tall square plastic wast bin above all listen to your boiler inspector and don't forget to show him/her each stage of progress , take some pic to show the solder penetration as you go Loco's to date Doris 3 1/2" didcot 14xx 5" Br class 2 tender 5" and under construction a BR class 4 tank to D Hewsons plans been at it for two years and have just about done the chassis BTW the 14xx and the class 4 tank are both fully scale with the 14xx having about 4000 1/32 rivets in the plate work ( done properly not stuck it ) I used to do my own boilers up to the doris fiasco now I get them built Class 4 cost upward of £2.5 k Stuart |
| sbwhart:
Hi Stuart Welcome aboard the cube :borg: Thanks for the information/advice as this is the first loco boiler Ive built I need all the advice I can get. 4000 rivets :bugeye: you wouldn't have a pic of that would you ? :worthless: Feel free to post it her or start your own thread. Thanks again Stew |
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