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Old 14th March 2004, 11:40 PM   #1
Zen Mod is offline Zen Mod  Serbia
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Default DIY arm question

preffered dimensions for Al tube?
found one,pretty straight and hard.
circa 10mm dia,with wall thickness of some 2mm
comments?
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Old 15th March 2004, 12:06 AM   #2
sreten is offline sreten  United Kingdom
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2mm thickness sounds a lot, I'd expect < 1mm.

Really depends on the weight of the section, diameter is good.

I believe the Naim unipivot gets its name from using
an alloy section normally used for Arrow shafts.

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Old 15th March 2004, 12:14 AM   #3
Zen Mod is offline Zen Mod  Serbia
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WTF is "Arrow shaft" ?
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Old 15th March 2004, 12:29 AM   #4
sreten is offline sreten  United Kingdom
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Arrow as in Bows and Arrows, sreten.
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Old 15th March 2004, 07:33 AM   #5
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Why use a tube?
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Old 15th March 2004, 10:45 AM   #6
sreten is offline sreten  United Kingdom
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Quote:
Originally posted by analog_sa
Why use a tube?
Because its the best engineering shape for the job.

The only thing better is a tapered tube,
tapered towards the headshell.

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Old 15th March 2004, 11:17 AM   #7
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Never really thought the tubular shape had any other purpose than screen and hide the wires. Some of the higher-end Sheu arms, like the Cantus seem to sound good using just a perforated strip of acrylic. No idea how they compare to tubular designs but for diy it certainly seems like a simpler solution.
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Old 15th March 2004, 04:53 PM   #8
mpm32 is offline mpm32  United States
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How would a carbon fiber or graphite golf club shaft work? They are tapered.
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Old 15th March 2004, 04:57 PM   #9
sreten is offline sreten  United Kingdom
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True, they are tapered but being designed for clobbering golf
balls they are probably too strong and thus heavy to be ideal
for a tonearm.

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Old 15th March 2004, 05:03 PM   #10
sreten is offline sreten  United Kingdom
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As a thought :

With some spray on glue that sets fairly hard I can't see why
you couldn't "roll your own" tapered armtube from aluminium foil.

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