Chops54
pfm Member
I was told it was an incredibly strong aluminium alloy of some sort and I read somewhere that visitors to the Naim factory were told that if they could bend an Aro armtube with their bare hands they'd give them an Aro foc.
DIY Tonearm
- Thread starter audioflyer
- Start date
I was told it was an incredibly strong aluminium alloy of some sort and I read somewhere that visitors to the Naim factory were told that if they could bend an Aro armtube with their bare hands they'd give them an Aro foc.
Same trick at Rega and I think SME at various shows. Not a bad party trick but, really, it's just a party trick. I can't bend a 6" nail in my hands, it doesn't make it any good in hifi.
Chops54
pfm Member
orangeart
KJF Audio Ltd.
Didn't we decide to make it so that folk could use a standard arrow as the tube, as It's easily available and perfectly straight?
Stefan
WT seem to manufacture a perfectly good sounding arm using just that!Might as well make the arm tube out of plastic then if it's just a party trick
John Channing
fruit box forever
Logically, there is no reason, in my opinion, why the arm tube needs to be super strong and therefore something like plastic would do perfectly well. Once we have the basic parts list together, it should be fairly easy to play around with with different arm tubes.
PigletsDad
My intelligence test came back negative.
I agree that strength is irrelevant, but stiffness is important - a floppy construction means you have a much denser spectrum of bending and torsional modes to manage in the midrange.
orangeart
KJF Audio Ltd.
Not super strong maybe, but certainly super rigid. The more rigid, the higher the resonant frequency gets pushed I think. There are arrows made of all sorts of stuff, so if we agree on an arrow diameter folk can experiment with different materials reasonably easily.
Chose your meaning. It was an unfortunately named but wonderful sushi restaurant. i would like to have my armwand made from ebonised bamboo chopsticks belonging to a early dynasty emperor. It would work well with my norushi cartridge on my norega TT...
Sorry I am too tired to contribute anything other than mirth and good wishes.
Sorry I am too tired to contribute anything other than mirth and good wishes.
John Channing
fruit box forever
I am not even sure super rigid is necessary. You cannot avoid resonance, whatever you use it is going to resonate somewhere in the audible spectrum. As I said, let's just make something from aluminium alloy then experiment later.
I am not sure there are any advantages in buying arrow shafts over standard off the shelf aluminium alloy tubing. From the measurements quoted, it looks like a standard 3/8" tube which you can get from many different suppliers very cheaply.