wella

Yes, excellent, thanks gentleman. I think i have got my head around it now. For some strange reason in my head I was thinking that the whole size of the disc would sit flush with the central pillar. I had forgotten that the outside flange over hangs. I will report back if and when I get any further with my thoughts. Paul

Looking at the picture below for the skoda favorit brake disc it appears to be too wide (236.3 mm). I was looking for suggestions for a disc that was a maximum of 152 mm 6" or maybe 127 mm 5"

So 127 mm152 mm

I am thinking about building a mobile/semi permanent/"heavy but I might transport" pier to upgrade my Celestron Mak 127 which, as is well known, has got legs that are about as steady as a freshly born lamb. I have found some nice metal tubing on ebay in a variety of sizes but does anyone have any details on the suitable break discs that are similar in size to the tubing. So 5" brake disc and 6" brake disc??? I haven't decided which to use yet. Thanks in advance. Paul