DIY Tonearm from part HD computers, why not..?

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HEADSHELL

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LIFTER
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Hi again Ed and thanks for all of your TA details buddy..

The distance between us is a little far but maybe a trade at some point.. Plinth in exchange for a tonearm maybe:D Just hobby ideas..

Your Dentist skills must be Awesome!

The paint on my table is done by the same guy who applied the Piano finish on all the Energy Veritas speakers.. The table is sprayed but not made into piano finish but Planning to make one without the grooves then he can do piano..

Talk to you later.. Outdoor project is waiting for me..

Keep posting.. Really enjoy it..

Here is idea I had for arm board for Rb300 threaded style arm mounts.. The center piece is solid and user drill for the arm.. The bottom washer compresses against the main piece..

Joel

i don't know ,what is my draw fail or less?
 
I like you drawing better than mine.. No offense taken..
You improved my idea because now we can incorporate screw down arm by keeping center shaft solid material..

Your head shell is really cool.. add required weight in the cup?
Lifter is real nice

More to come..

i have tried drawing.. i add hole screw and my draw must be replacement add rotate 45 degree.

i give head shell a cup for placement "shell weight " pressure cartridge.
weight of the cup: 1.79 gram

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weight: i made two , large and small
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placement on the cup:

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The long arm makes sense..

I'm no expert on arms .. For Plinths I'm going for Mass Damping, just seems to to work best... My Nottingham Hyperspace on 200 pound stand sounds Hyper revealing like CD's .. Ooops, Better than cd's but clear like cd's

.


Heavy plinth give mass damping become more of the best bass and detail.
Your Nottingham hyperspace are very heavyweight,
I'm imagining is certainly a very nice voice with no vibration. It is sure very good and better from cd...

I don't know why i have obsession with along arm. i think this give linier morel than the short arm. But a long arm can give a problems of add mass in pivot , add friction on the bearing, little triger on pivot should be vibration at ended rod ( the longer distance will provide greater amplitude at the end of tonearm).

I'm sorry if my write wrong . My English not good.
 
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Heavy plinth give mass damping become more of the best bass and detail.
Your Nottingham hyperspace are very heavyweight,
I'm imagining is certainly a very nice voice with no vibration. It is sure very good and better from cd...

I don't know why i have obsession with along arm. i think this give linier morel than the short arm. But a long arm can give a problems of add mass in pivot , add friction on the bearing, little triger on pivot should be vibration at ended rod ( the longer distance will provide greater amplitude at the end of tonearm).

I'm sorry if my write wrong . My English not good.

Your english is fine.. Keep up the good work:)

If a long arm is beneficial, then maybe I could make a plinth with a larger mounting distance.. Maybe the arm could be a separate base..
Here is how I made the shape for tangent circles, but I'd like a standard shape to make a cnc template for cutting.. My preference is to have aluminum arm board(s) inserted.. 3R thread, we can discuss all details..

Edit: I use free Google sketchup.. sorry it's a little crude but gets the job done.. I'm ready to download better software, just don't know which one..
 

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very nice... prefect... super white ..clean... i like ....
i see you tone arm with wooden rod. what ?

have a nice best turn table. it is sure good.

may you share stage what you have done of DIY TT R3
i hope you share all your device.......:D

The arm is Cosonance composite..

Many aspects to discuss.. MDF or Hardwood for plinth for one example..

Here is one for Yamaha 3R top and How I veneer the side.

Going to try shellac sprayed.. Hope I don't screw it up:eek:
 

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3R PLINTH from Joel

Your english is fine.. Keep up the good work:)

If a long arm is beneficial, then maybe I could make a plinth with a larger mounting distance.. Maybe the arm could be a separate base..
Here is how I made the shape for tangent circles, but I'd like a standard shape to make a cnc template for cutting.. My preference is to have aluminum arm board(s) inserted.. 3R thread, we can discuss all details..

Edit: I use free Google sketchup.. sorry it's a little crude but gets the job done.. I'm ready to download better software, just don't know which one..


Yes, used a long arm need a large plinth , that not efience for placement.
i have done.. :D

your image are enough clear, i see your make that full geometric and extra calculation. you are working by cnc machine , very helpfully thorough and accurate job.such as your plinth 3R is very good.
i like your plinth ergonomic of you arm base.. balance..
hole for armbase flexible for using other TA. why you not fixed ?






The arm is Cosonance composite..

Many aspects to discuss.. MDF or Hardwood for plinth for one example..

Here is one for Yamaha 3R top and How I veneer the side.

Going to try shellac sprayed.. Hope I don't screw it up:eek:


yes, sorry i have not knowledge about other TA . i have seen, that the Cosonance tone arm and rod of TA made from composite material. are correct?
first time i see you pic , i look like wood. i'm wrong.:confused:
how about sound of that? compare with your SME , i hope not fail :confused:

MDF is compact and flat easy to work, and solid hardwood in my opinin better from mdf.

wooden venner is giving the impression of natural.


have a nice day to you

regards
ed
 
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Thinking about long arm placement..Hmmm, have to play around with drawing..

Do you think fixed arm is better? You could be right.. a simple round aluminum blank is likely inexpensive in quantities..

To be honest I feel my upgraded Rb300 is better than The SME..
I also like simple well made arms like yours and I'm sure better that Rb300..

Cheers.
 
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