Yet another guy tries to fix his Sieg SX2 looseness

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vintageandclassicrepairs:

HI All

--- Quote ---Yes you cant use them lying on their side but NO they wont explode if laid down or even falling over
--- End quote ---

This is a very dangerous practice :bugeye:
lying the Acetylene tank on its side while using it allows the stabilising agent (acetone) to flow from the tank

The lack of stabilising agent can cause catastrophe :jaw:

Regards
John

MetalMuncher:
Well, I was always told it is dangerous and illegal to "haul" them lying down, and that you should always use them upright. But I had not heard why. And of course use the valve cover, but I figured that was in case one accidentally did fall over, so the valve didn't get snapped off. I imagine any flammable gas cylinder falling over and hitting a floor would be potentially disastrous. I keep mine on a cart designed for the purpose, and haul the whole cart strapped upright in a pickup when they need to go be exchanged.

Regarding the stories about penetrating concrete walls when one "launches", my dad saw this happen when working in US Steel decades ago.

Another thing I was told was that MAPP gas burned hotter (and so was more desireable and justified the higher cost). I guess that was wrong. My father in law used to use LP in place of acetylene because it was cheaper. Burned cooler, but got the job done.

I decided to Google mapp gas vs. acetylene, and learned that it does indeed burn cooler, but it is much safer to use and transport. And, something surprising to me - the mapp gas you buy today isn't really mapp gas. We stopped producing genuine mapp gas in North America in Spring 2008. The mapp gas sold today is a replacement made of LP gas with high levels of propylene added. Learn something new every day! :) I'll bet they did not lower the price. ;)

superc:
Tell that to Morrisania Hospital in NYC. That was cited as the direct cause of the explosion that destroyed that hospital (there were several dozen O2 tanks near by as well as other bottled gases). Not a distant event for me cause I saw the blast from the #4 train station.

superc:

--- Quote from: MetalMuncher on February 25, 2014, 06:27:05 PM ---<snipped for brevity>
I decided to Google mapp gas vs. acetylene, and learned that it does indeed burn cooler, but it is much safer to use and transport. And, something surprising to me - the mapp gas you buy today isn't really mapp gas. We stopped producing genuine mapp gas in North America in Spring 2008. The mapp gas sold today is a replacement made of LP gas with high levels of propylene added. Learn something new every day! :) I'll bet they did not lower the price. ;)

--- End quote ---

Well it may now be empty but I got two big bottles back in 05. I last used some of one of them back in 2010. In theory, there should be about 1 1/3 tanks of genuine Mapp in the shed since I never did crack one of them. It is of course recognized they may both be empty (also the O) but my fingers are crossed.

RussellT:
Hi Metal Muncher and Superc.

I'm glad you liked my idea - sorry if you had to rethink. Next time I'll try and post an answer before you post the question. :lol:

The thread now seems to have digressed onto how to bend a thick steel plate. I'm with Velocette, I wouldn't try and bend it. I'd use angle or solid bar to connect two plates. That seems to me to have a better chance of getting them at 90 degrees and also gives some scope for adjusting the angle for a perfect fit.

Russell

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