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Transformer Oil
We still have three or four 25 litre barrels of this oil available if anyone
still needs some.... Peter -- Peter A Forbes Prepair Ltd, Rushden, UK prepair@easynet.co.uk http://www.prepair.co.uk |
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Re: Transformer Oil
Prepair Ltd wrote:
> We still have three or four 25 litre barrels of this oil available if anyone > still needs some.... > > Peter > -- > Peter A Forbes > Prepair Ltd, Rushden, UK > prepair@easynet.co.uk > http://www.prepair.co.uk Peter, Is it straight mineral oil, or the older stuff that used pcb's ?. Quite usefull stuff for high voltage work as well... Chris |
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Re: Transformer Oil
On Wed, 25 Jul 2007 13:14:44 GMT, ChrisQuayle <nospam@devnul.co.uk> wrote:
>Peter, > >Is it straight mineral oil, or the older stuff that used pcb's ?. > >Quite usefull stuff for high voltage work as well... > >Chris It is the correct oil for trannies, welders etc. PCB's were outlawed back in the 1970's IIRC. I have a Shell reference on a can at home if you need it. Peter Peter -- Peter A Forbes Prepair Ltd, Rushden, UK prepair@easynet.co.uk http://www.prepair.co.uk |
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Re: Transformer Oil
Peter A Forbes wrote:
> > Parmeko C Core trannies were vacuum impregnated with varnish, there's no PCB > material in them AFAIK, unless there were some ginormous models they made. > > Oil is free to collector, it came out of our PCB (Printed Circuit Board) company > transformer when they closed down, it had been renewed fairly recently and was > too good to chuck. > > Oil is Shell Diala BS148/1984 > > Peter > -- > Peter & Rita Forbes > Email: diesel@easynet.co.uk > Web: http://www.oldengine.org/members/diesel Peter - Will collect some, if you could suggest a suitable time, or email off list to: syseng at gfsys.co.uk. I think you are near Northampton, so not too bad from Oxford. As you say, too good to chuck and usefull just to have some in stock. Can do swap, whatever, if there's anything you need. Just for the info, the Parmeko C core trannies came in two main types. The first was open frame vac varnish impreg, with another type using the same basic frame, enclosed by two steel half shells bolted to the ends and then soldered in the middle, with ceramic feed throughs on the ends for connections. The whole thing was filled with tranny oil, with the small fill hole soldered over. Still have quite a few here from junk stripdown / the old valve days and some are of an age where pcb's are quite likely, but fine so long as you don't break the seal. They really were the rolls royce of transformers at the time and too good to throw away even now... Chris |
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Re: Transformer Oil
On Thu, 26 Jul 2007 13:55:08 GMT, ChrisQuayle <nospam@devnul.co.uk> wrote:
>Peter A Forbes wrote: > >> >> Parmeko C Core trannies were vacuum impregnated with varnish, there's no PCB >> material in them AFAIK, unless there were some ginormous models they made. >> >> Oil is free to collector, it came out of our PCB (Printed Circuit Board) company >> transformer when they closed down, it had been renewed fairly recently and was >> too good to chuck. >> >> Oil is Shell Diala BS148/1984 >> >> Peter >> -- >> Peter & Rita Forbes >> Email: diesel@easynet.co.uk >> Web: http://www.oldengine.org/members/diesel > >Peter - Will collect some, if you could suggest a suitable time, or >email off list to: syseng at gfsys.co.uk. I think you are near >Northampton, so not too bad from Oxford. As you say, too good to chuck >and usefull just to have some in stock. Can do swap, whatever, if >there's anything you need. > >Just for the info, the Parmeko C core trannies came in two main types. >The first was open frame vac varnish impreg, with another type using the >same basic frame, enclosed by two steel half shells bolted to the ends >and then soldered in the middle, with ceramic feed throughs on the ends >for connections. The whole thing was filled with tranny oil, with the >small fill hole soldered over. Still have quite a few here from junk >stripdown / the old valve days and some are of an age where pcb's are >quite likely, but fine so long as you don't break the seal. They really >were the rolls royce of transformers at the time and too good to throw >away even now... > >Chris I have one of they, didn't know it was also oil filled... Postcode is NN10 0JT, 01933 356666 let me know when approx. Peter -- Peter A Forbes Prepair Ltd, Rushden, UK prepair@easynet.co.uk http://www.prepair.co.uk |
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Re: Transformer Oil
In article <0J1qi.4794$nm3.272@newsfe4-gui.ntli.net>,
ChrisQuayle <nospam@devnul.co.uk> in uk.rec.models.engineering wrote: >Peter A Forbes wrote: > >> >> Parmeko C Core trannies were vacuum impregnated with varnish, there's no PCB >> material in them AFAIK, unless there were some ginormous models they made. >> >> Oil is free to collector, it came out of our PCB (Printed Circuit Board) company >> transformer when they closed down, it had been renewed fairly recently and was >> too good to chuck. >> >> Oil is Shell Diala BS148/1984 >> >> Peter >> -- >> Peter & Rita Forbes >> Email: diesel@easynet.co.uk >> Web: http://www.oldengine.org/members/diesel > >Peter - Will collect some, if you could suggest a suitable time, or >email off list to: syseng at gfsys.co.uk. I think you are near >Northampton, so not too bad from Oxford. As you say, too good to chuck >and usefull just to have some in stock. Can do swap, whatever, if >there's anything you need. > >Just for the info, the Parmeko C core trannies came in two main types. >The first was open frame vac varnish impreg, with another type using the >same basic frame, enclosed by two steel half shells bolted to the ends >and then soldered in the middle, with ceramic feed throughs on the ends >for connections. The whole thing was filled with tranny oil, with the >small fill hole soldered over. Still have quite a few here from junk >stripdown / the old valve days and some are of an age where pcb's are >quite likely, but fine so long as you don't break the seal. They really >were the rolls royce of transformers at the time and too good to throw >away even now... > Safe enough if mounted on a chassis, but if loose, easy to crack the ceramic on those KLG Corundite seals, expecially when the HT winding has 3 tall seals and the other windings the standard 800V ones. If I was using one today I'd mount it terminals up, just in case. Definate possibility of PCB inside. They're in demand from the valve amplifier hifi kids, anything that will power a pair of Williamson amps. Main problem is that many of them are noisy, just a soldered up banding strap around the C cores. I sold most of mine to a guy advertising in ukra a few years back, got 25 quid a throw, I'd rather they be put to good use than be door stops. Regards, David P. |
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Re: Transformer Oil
David Powell wrote:
<snipped> > > Brush Research Division, early 60s. Kept us student & grad > apprentices out of mischief. I did enjoy shooting dead 12AT7 out of > 7/8 id pipe with shop air. :-) > > Regards, > > David P. Hmmm, 12AT7, was that one or both triodes faulty ?. Remember that sort of thing well - a favorite at one company I worked for was to drill and ream a piece of 1/2" silver steel bar, ball bearing size and then use it as cannon to fire ball bearings with firework black powder. Never did any serious harm, but you would locked up for years for that sort of thing now. Definately lacking in sense of humour, the modern world and one could just imagine the list of possible charges... Chris (Sometimes with arch mode on :-)... |
