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Post by johnwp5bcoupe on Jun 21, 2007 16:17:31 GMT
Just to make sure were the servo's done in Cadmium  Where has Phil gone? no comments on the board! not like him hope he is ok  |
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Deleted
Deleted Member
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Post by Deleted on Jun 22, 2007 8:12:43 GMT
Mine looks more like passivated zinc.
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Post by johnwp5bcoupe on Jun 22, 2007 8:32:51 GMT
Thank's for the info humphrey  I have just had a word with the platers and they say passivated was not used in the 60's only on specialist cars  still confused  |
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Post by johnwp5bcoupe on Jun 22, 2007 8:51:45 GMT
I have just spoken to Graham Rigby humphrey and you are correct it is Passivated but only a very light gold so light it is hard to see and the fluid resevoir was Tin plated so that is being Nickled first then dull Zinc finished they are also Nickle plating the servo before the Zinc Passivated |
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Post by dorsetflyer on Jun 22, 2007 19:04:25 GMT
The platers are correct very little, 'passivating' was done in the sixties except for specialist work (usually in the Aerospace industries). Which means that the Servos were just 'Cadmium' plated.
Nowadays, with 'Cadmium' being banned, the finishes on steel products would be 'Zinc' plate and 'Passivate'.
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I have just had a word with the platers and they say passivated was not used in the 60's only on specialist cars 
still confused 