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Post by steamboater on Mar 31, 2009 10:18:55 GMT
Could somebody enlighten me as to the pro's and cons of caulking with soft (high temperature) soft solder. I have a very persistant leak, unfortunately it between the firebox and barrel. It is not a coal fired boiler. It is not going to be run "in public" and hopefully 300 degree solder will/ may answer the problem?
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Post by baggo on Mar 31, 2009 10:38:57 GMT
High melting point soft solder such as Comsol is perfectly acceptable for sealing a small weep provided the actual joint is sound. It obviously has very little strength so shouldn't be used for anything structural. We still use Comsol for caulking firebox stays in 2½" gauge boilers where it is often extremely difficult, if not impossible, to silver solder them due to the very narrow fireboxes.
The problem is that once you have used soft solder, you can't do any further silver soldering (in theory) but why would you want to anyway?
John
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Post by steamboater on Mar 31, 2009 16:30:13 GMT
Many thabks for that "Baggo" John! Where is it obtainable from, also not this ost but in the Green Arrow toic it states there you helpfully supplied information/drawings? Am I wrong? Could you supply me with them. I am willing to pay of course! I have the Model Engineer series, Many thanks for your reply.
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Post by baggo on Mar 31, 2009 20:29:21 GMT
You can get the Comsol from Reeves or Maidstone Engineering. Also Cup Alloys do their version (Cupsol). It's quite expensive for what it is but you don't need a lot! I use ordinary Bakers fluid for the flux although I think most soft solder fluxes will work.
Re Green Arrow - I was only able to help with the ME articles which you already have and not full size drawings.
John
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ace
Statesman
Posts: 528
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Post by ace on Mar 31, 2009 21:36:44 GMT
steamboater Baggo (John) supplied me with the ME articles which are proving to be a great help for me. The plans for the G1 scale Green Arrow are available from My Hobby Store. www.myhobbystore.com/c/96/Plans---Locomotive.html?Page=2They are listed at £29.95, they are good quality but rather big. ace |
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Post by bookworm on Apr 1, 2009 10:16:55 GMT
The plans are also available from Walsall Model Industries.
They can also supply the frames, wheel castings, tender axleguards and cylinder casting if needed.
Peter
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Post by steamboater on Apr 1, 2009 18:10:02 GMT
Just a thankyou to all who have answered to this post, one small question? Could the Green Arrow be built from ME articles (alone)
Just really trying to save a few shillings towards the boiler material!!
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ace
Statesman
Posts: 528
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Post by ace on Apr 1, 2009 19:39:53 GMT
I hope so steamboater because I've already started my Green Arrow. Although I think I may be tempted to by the cast cylinders but I will be contructing the rest of the parts including the boiler myself. Anyway there is always good advice and friendly folk on here that will assist with the build I'm sure.
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Post by steamboater on Apr 1, 2009 19:53:18 GMT
thanks Ace, like you say it is the place for advice etc., It would be good if you keep us udated?
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Post by baggo on Apr 1, 2009 20:20:16 GMT
The drawings in the articles look pretty clear so you shouldn't have any problems just using those. The full size ones will only be 'full size' versions of the article ones anyway. The only thing is that the full size ones may contain corrections if there were any mistakes in the original articles.
John
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ace
Statesman
Posts: 528
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Post by ace on Apr 1, 2009 21:19:22 GMT
I will try to post updates as and when I have done work on it with photos, plus let you know if there are any hidden problems with building parts that I come across. I have already decided to knock off a few small parts that I can machine up and practice my silver soldering on like the water pump, displacement lubricator, exhaust and steam tees etc.
ace
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