Thanks for the spreadsheet Tnott. Very helpful,
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The use of stainless screws and bolts would be really only on components not painted over, such those holding the spider and mirror cell, which may occassionally require adjusting or to remove the mirror for cleaning, and varnish would only impeed. The Odyssey now has stainless components on these parts.
I am looking at using the largest alt bearings practicable. I can see the advantage, and small bearings only retard performance, the bigger the better. I also like the 'horn' like effect of protruding bearings,
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I'll be using steel brackets to hold the spider in place. I've got an old steel bed frame, from which I'll cut out the brackets, predrill the necessary holes and chrome plate to preserve. Their position on the top of the ring will not be seen by the mirrors, so I'll make a feature of them by being polished and shiny.
While on the topic of alt-bearings, any suggestions on REMOVEABLE alt-bearings?
I'm glad you like the artwork, AstroJunk. Thought I'd have a bit of fun. The 'blank canvas' was too tempting not to have a go at. Plus these things are to be enjoyed. I have to put up another photo, this time showing the other side as my boy asked "where's my picture, papa?".