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Old 15th September 2017, 02:29 PM   #1511
niffy is offline niffy  England
diyAudio Member
Join Date: Nov 2013
Location: Brighton
Hi DD,

I fear that your current design is going to suffer from lateral instability where the vertical arm rests on the two round rails. I think that the contact points in the grooves in the bearings are not going to be sufficiently rigid to prevent any lateral rotation at this point. (The groove will allow a little rotation before rolling) Any play in the bearings will also allow a small amount of lateral rotation. I would also recommend against ball race bearings if at all possible due to the aforementioned chatter.

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