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Post by Roger on Apr 7, 2020 10:29:07 GMT
Quote}--- "I know most people don't do it that way, but it works for me."...... certainly does, the photos prove it and that's the way I'll be doing it in future... I'll be closing my BOC Oxy-Actylene account soon ( an expensive left-over from Self-Employment days ) and just using a Propane gun for general heating....What size burner is suitable for general use would you say ?? Hi Alan, I don't think I'd want to go any smaller than my current one which I got from a scrap yard years ago. That measures about 30mm inside the nozzle. That's just big enough to get a large piece of Steel plate Red hot for normalising, as long as you surround it with Thermalite blocks. I'd like an Oxy-Acetylene or Oxy-Propane torch, but the rental makes in unviable. When this is all done, I'll be looking to continue with my HHO torch project which might be a good substitute for those. That only needs water and electricity, and no pressurised gases as it's an 'on demand' setup.
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uuu
Elder Statesman
your message here...
Posts: 2,810
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Post by uuu on Apr 7, 2020 11:23:40 GMT
For building Steve's Brit boiler, he and I mainly used Sievert 2943 burners, which are about 35mm across the end. They're rated at 43.5Kw. We tried a 2944 one (50mm), rated at 86Kw - that's the one we set fire to things with. For smaller things, like fittings, I quite like the cyclone burners John has at the Pumphouse. At home I use a 3941 burner (22mm) rated at 3.1Kw. Roger's 30mm one might be like a 2942 - 32mm 26Kw.
John's oxy-propane kit is really excellent. Like you he didn't like renting the bottles, but now uses a bought bottle of hobby oxygen, which is more economical. The same torch is used as for acetylene, but we've been using a nozzle that has a small ring of holes around a central one. This gives a slightly softer flame.
Wilf
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Post by delaplume on Apr 7, 2020 12:25:57 GMT
Thanks guys-------- that's just the sort of info I was looking for...
Wilf, that nozzle with holes in sounds like it might be from a cutting torch...??
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Post by delaplume on Apr 7, 2020 12:59:13 GMT
Roger, ---last "off piste" item.. I have had this under my bench since the "Noah's Ark" contract and have never used it ( The Oxy/Acet. covering all needs at the time )... It appears to say Bullfinch on the handle with the removable nozzle measuring 20mm inside diam..I've had a quick scan on the net and there appears to be quite a lot available including the same handle..... My first question is}--- Are these interchangeable with the Sievert items ?? and second}-- Can I use either Propane or Butane ??.........or must it be only one of these ?? Thanks for any help...
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uuu
Elder Statesman
your message here...
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Post by uuu on Apr 7, 2020 15:40:06 GMT
I don't think the multi-hole nozzle is a cutting one - the holes are really tiny, and they all deliver oxy/gas mix, there's no pure oxygen feed. It fits straight on the standard handle. I've not tried butane - but have found a discussion thread on another site: ME forumWilf
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jem
Elder Statesman
Posts: 1,065
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Post by jem on Apr 7, 2020 16:38:12 GMT
I have oxiacetileno equipment I own the bottles, so the only cost is filling and getting them tested, this is in Spain. Acetileno is very expensive here, so I use oxygen and Butane for cutting steel plate, and this works just as well as Propane for me, so I don't think that there is much difference here.
best wishes
Jem
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mbrown
Elder Statesman
Posts: 1,720
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Post by mbrown on Apr 7, 2020 19:18:23 GMT
My first question is}--- Are these interchangeable with the Sievert items ??
and second}-- Can I use either Propane or Butane ??.........or must it be only one of these ??
Thanks for any help...
I use a Bullfinch torch with a nozzle like in your picture for most work, a very small one for fittings, unions and small work, and a real blaster - the biggest in the range - which is enough for most of my boilerwork, although sometimes supplemented by a friend's medium size torch.
I had a look at some Sievert nozzles - couldn't try them on as I didn't have the torch with me at the time, but they didn't look compatible...
And I think you'll find that your regulator fits only propane (or butane) as the threads are different. The torch and nozzles would probably work after a fashion on butane but are sized to burn propane properly.
Hope that helps.
Malcolm
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Post by chris vine on Apr 7, 2020 19:38:46 GMT
I think that air products (or maybe it is boc) do a smaller oxygen bottle for hobbyists. There is a deposit charge (something like £80 if I remember) and then you pay to get it refilled/exchanged. Not as exorbitant as the full rental system.
I used to have a cylinder as a sort of favour from a supplier, but now everything has bar codes and is scanned in and out. So that came to an end!!
I must say that I love the oxy propane torch. It is so gentle but powerful. Maybe I mean controllable.
Chris..
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Post by andyhigham on Apr 7, 2020 19:48:13 GMT
I get my welding gas from Energas, a lot cheaper than BOC
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Post by andyhigham on Apr 7, 2020 20:01:45 GMT
It used to annoy me, when I took empties back to BOC, lifted them out of my car and put them in the compound then took the full ones out of another compound and lifted them into my car. For which I had to pay a handling charge. FFS
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Post by Roger on Apr 7, 2020 21:09:39 GMT
Originally I hadn't anticipated the curved cosmetic exhaust casting being in this position, and it turns out that I can't get the lid on the lubricator box. The lubricator was placed as high as possible, and the Amesbury style pumps were redesigned to make them shorter. The idea was to keep the bottom of the lubricator out of sight. I tried moving the whole assembly down enough to get the lid on, but it had to be moved quite a lot to be able to do that, because the lid is so long front to back. I considered cutting the lid in half, but didn't really want to do that either. In the end, I slackened the bolts and let it tip back a bit, and that made it easy to get the lid on and off. 20200407_202626 by The train Man, on Flickr So I measured the angle and here I'm transferring it to the bracket so I can machine it at the same angle. 20200407_204722 by The train Man, on Flickr I don't like this sort of setup, it's fraught with danger. So I opted to cut from right to left, so that if anything moved, the part would swing downwards instead of up. I took 0.1mm cuts at a very modest feed... 20200407_205657 by The train Man, on Flickr ... which completed the job without incident. 20200407_211159 by The train Man, on Flickr The angle is only 2.5 degrees, so it's not even that noticeable. It makes the world of difference though... 20200407_215447 by The train Man, on Flickr ... you can see there's daylight under the curved tube. 20200407_215501 by The train Man, on Flickr
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Post by keith1500 on Apr 8, 2020 5:38:34 GMT
Roger, Would you not consider making this a drop in panel to allow easy access to the lubricators Example from my loco 1500 by GL5Keith1500, on Flickr 1500 by GL5Keith1500, on Flickr
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Post by Roger on Apr 8, 2020 7:47:17 GMT
Roger, Would you not consider making this a drop in panel to allow easy access to the lubricators Example from my loco 1500 by GL5Keith1500, on Flickr 1500 by GL5Keith1500, on Flickr Hi Keith, That was one option I did look at. The reason I didn't do it that way was because I thought it wouldn't have looked right with those side pieces being loose enough so it would slide in without scratching the paint. Bolting them to the saddle with short slotted holes means I can press them against the sides of the frames before tightening them up so they look like they're bolted on.
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kipford
Statesman
Building a Don Young 5" Gauge Aspinall Class 27
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Post by kipford on Apr 8, 2020 8:08:17 GMT
Roger I have oxy/propane at home, and like Bob use it for 98% of my silver soldering. The torch and regulators were bought as a kit off Ebay. I also use a dedicated no 3 propane nozzle from welders workshop. The oxygen is from Hobby Weld, bought from one of their local stockists. It cost around £150 for the torch and regulators. I use the small (relative term) oxygen bottle which costs a one off deposit of £65, plus the refill cost of about £30. I find the small bottle lasts quite a long time. I did the whole of my tender with one bottle, and plenty to spare. Hope this is useful. Dave
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Post by Roger on Apr 8, 2020 8:33:00 GMT
Roger I have oxy/propane at home, and like Bob use it for 98% of my silver soldering. The torch and regulators were bought as a kit off Ebay. I also use a dedicated no 3 propane nozzle from welders workshop. The oxygen is from Hobby Weld, bought from one of their local stockists. It cost around £150 for the torch and regulators. I use the small (relative term) oxygen bottle which costs a one off deposit of £65, plus the refill cost of about £30. I find the small bottle lasts quite a long time. I did the whole of my tender with one bottle, and plenty to spare. Hope this is useful. Dave Hi Dave, I've got a regulator, hose, torch and even a cutting torch but I gave away my BOC PortaPack when the gas ran out because getting it up and running with BOC ten years ago was uneconomic. Now it's looking like it's feasible to go down that road, so I might consider it again. It would certainly be easier for Silver Soldering where it's helpful to be able to direct the heat. I still think an HHO torch would be good enough for most small jobs, I just need to finish the HHO generator and make a torch. I've done a lot of the development, it just needs a final push. The concept is really simple, you just electrolyse water and collect the gas... safely! It's highly explosive, so you store as little as possible and use a bubbler to prevent flashbacks. You also make everything so it will pop apart if something does happen. Mine is a needle cell of my own design, using interlocking 316L rods closely separated by Lexan plates so you've got as large a surface area as possible. It's tricky to assemble, but works a treat. The 'combs' are just an assembly aid, without them you'd never get it together. 20130610_165606 by The train Man, on Flickr These are the two separate electrodes. They have to be 316L, even 316 Stainless gets eaten way in no time so there's no Iron left and it just snaps like a carrot. 20130611_104926 by The train Man, on Flickr The whole thing is powered by a electrolysis cell power supply, so it ought to be good for about 3KW. 20130807_203524 by The train Man, on Flickr Anyway, it's an interesting thing to play with.
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Post by steamer5 on Apr 8, 2020 9:18:59 GMT
Hi Roger, Now that looks like a fun project! An interesting design.
Had a uncle who was playing with this, the bang was heard 5 km’s away! After that he didn’t store the gas but used it on demand!
Cheers Kerrin
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Post by springcrocus on Apr 8, 2020 10:16:08 GMT
Hi Roger, Now that looks like a fun project! An interesting design. Had a uncle who was playing with this, the bang was heard 5 km’s away! After that he didn’t store the gas but used it on demand! Cheers Kerrin Glad to read there was an "after that".
Regards, Steve
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millman
Part of the e-furniture
Posts: 297
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Post by millman on Apr 8, 2020 12:54:38 GMT
Regarding the oxy propane nozzles, about 40 years ago I purchased a BOC Dependox oxy propane torch, it had three nozzles and the best way I can describe them is perhaps a piece of 3/16 diameter brass with a jet hole in the centre and then heavily knurled with a straight knurled on the od, this is the lightly pressed into a piece of about 7/16 brass hex bar which is threaded to suit the neck tube. Sorry but I am not able to upload photos but if anyone wants a pic I will email one to you.
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Post by Roger on Apr 8, 2020 13:19:08 GMT
Hi Roger, Now that looks like a fun project! An interesting design. Had a uncle who was playing with this, the bang was heard 5 km’s away! After that he didn’t store the gas but used it on demand! Cheers Kerrin Blimey, he must have been storing an awful lot of it. Of course, the mixture is precisely right for perfect combustion, and it only takes the slightest thing to set it off. I'm actually surprised that it's possible to make a torch that uses the gas, but I understand that they use a gauze or sintered filter that prevents the flame front from going back up the feed tube. All interesting and good fun.
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Post by delaplume on Apr 8, 2020 13:25:37 GMT
Hi Keith 1500,
Nice to see someone stowing the lamps the correct way ie}--- lens inwards..
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