He was going to write a wiki page on centrifuges and I think started one here ...
http://www.biopowered.co.uk/wiki/Centrifuges (spookily there's a picture of my centrifuge on there). With the logic of something is better than nothing, I'll categorise the page so it shows up in the index, head it as incomplete and upload the photos from photo bucket (or whereever) to the wiki.
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I've just taken a look at the wikki page and it looks reasonably complete. Not sure if I can remember how to edit, or even if I still have editing rights. But in terms of any changes the only thing that I would add would be a good over view for a fitting kit that would enable folk to cobble together their own (maybe something about hose assemblies rather than reinforced hose and jubilee kits on the pressure side of things), a video showing a centrifuge in operation, cleaning the bowl out, a bit about reassembly (I've known of the occasional bod who has used a monkey wrench to tighten the knurled nut on the top of the bowl and damaged the blow, so that it can't keep it's pressure) and finally something about the usefulness of having a conical tank and pulling from the bottom of the tank - obvious really, but you'd be surprised ;-)