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Stew wins Bronze

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sbwhart:
Hi Ralph

Thanks for the info on soldering the ball together, I've got the kit to do this but when it comes to soldering I'm a bit of a brute  :whip:

Not wishing to be a bore, but with what I do for a living, I always have to consider the safety aspects of a job.

As the sphere is not a closed vesil it won't need a safety valve and were dealing with a small volumes, the pressure in the sphere will mainly be a function of its volume and jet size. I was thinking along the lines of having Jets I could change, starting with a big diameter jet to see what happens then reducing to I get something that runs. And doing a quick pressure test on the sphere with compressed air.

Will it spray hot steam/boiling water around ??  :zap:

Can you quickly turn the heat off without being scalded?. :zap:

You need to have some sort of plan in your mind that will reduce the hazards.

Please don't be offended by this:- its aimed at people who read the forum who may not be as switched on as we are.

Have fun safely

Cheers :wave:

Stew

Divided he ad:
No offence taken Stew.... You soldering brute you!  :lol:   Soldering is a delicate art.... Big hands don't help!   :clap:


The pressure should not rise to anywhere near danger levels as it is vented to atmosphere ( should be self controlling!) it's like having the safety valve jammed open!


As long as it is not over filled it should not spray boiling water everywhere... Steam however will be forced from the jets and could burn... The operator should know or be made very aware of this!


turning off the heat will be just a stout blow on the flame.... Should stop boiling pretty fast.... Will obviously remain hot for 5-10 minutes!


Safety has all been accounted for....knowledge of the pressure etc has been researched (been meaning to make one of these for over 2 years!)  I'll be testing under safe conditions, a shield between the ball and myself! Shouldn't need it.... But there just incase (shields to maximum captain!!  :borg: )  :thumbup:




Is that ok ?

I think I might copy some of this for the thread?



Ralph.

sbwhart:
Thanks Ralph look like you've got all the angles covered, now go and boogie  :ddb:

I've bin racking my brains how to use that little banna


Cheers

Stew

bogstandard:
If you think you are going to have problems soldering it Stew, bring it round and I will silver solder it for you. But if you have already tried soft soldering, don't bother, as even the slightest residue will stop the silver soldering working.

BTW, you are going to need a rather good burner to get it steaming. The first problem is the physical size, rather a large surface area to warm up, and the second is the gauge of the material, a lot of metal to get up to temp.

John

sbwhart:
Hi John

Thanks for the offer, I was going to silver solder it I've got a supply of different grades of solder, and a brand new unused sivert type gas torch, just havn't got round to getting the propane, thought it would be good practice for when I do my Loco boiler.

I'll return that die along with that hub thing this Tuesday if thats ok. I'd also like to have another look at that elbow engine you've got.  ::)


My Sieg is coming today  :ddb:  :ddb:  :ddb:  :ddb:  :ddb:

Cheers

Stew

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