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In Reply to: Re: disagree, with reservations, complications, & One Overcooked Analogy / long posted by user510 on May 5, 2007 at 14:41:06:
Guess I should have emphasized the way around that is obviously used in some tables, like the Teres armboard shown..As mentioned .."Ultra-overkill massive construction, careful attention to mass-balancing, and then patient testing may be how these all come to terms with ..."
In some cases, though, yes, outboard arm-mounts lack physical integrity, as materials, or based on construction / design.
But beyond the 'lever' issue, presented by that situation, my other point is that :
If the armboard represents any lesser a massed physical presence than the mass of the plinth, it becomes a target for motor resonance proceeding from the greater resisting area (mainland) to the lesser resisting area (peninsula).
Until the armboard region of the system represents at least as imposing a resonance-conducting venue as the plinth, it's a path of least resistance. Isn't it ?
In the case of your Teres armboard, the layered & ultra-rigid approach probably represents an imposing roadblock to resonance. Not so the simpler-construction, simpler-material, outboard armboards we see sometimes. (Besides, w/ DC servo beltdrive, there's way less to fear by way of rumble than with an Idler-coupled design..)
J.
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groove
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Follow Ups
- Re: disagree, with reservations - J.D. 15:17:10 05/05/07 (3)
- Re: with reservations - user510 17:49:31 05/05/07 (2)
- From the computer modeling I have done, - tubesforever 00:22:46 05/06/07 (1)
- This is what I think is going on with my setup (whic is the one pictured here) - J Harris 10:47:26 05/06/07 (0)