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-   -   DIY Unipivot - ClearTone (http://www.diyaudio.com/forums/analogue-source/131381-diy-unipivot-cleartone.html)

deltavektor 15th October 2008 06:05 AM

DIY Unipivot - ClearTone
 
I quickly whipped this one up yesterday evening... a unipivot arm from plexiglass and various bits and piece I had lying around the workshop.

http://i281.photobucket.com/albums/k..._10_15007m.jpg

http://i281.photobucket.com/albums/k..._10_15002s.jpg http://i281.photobucket.com/albums/k..._10_15003s.jpg

analog_sa 15th October 2008 06:55 AM

2 Attachment(s)
Nice. How did you make the curved finger lift? No bias compensation? Was Cantus the inspiration?

deltavektor 15th October 2008 07:01 AM

Quote:

Originally posted by analog_sa
Nice. How did you make the curved finger lift? No bias compensation? Was Cantus the inspiration?
The Cantus was in the back of my mind.

I still need to find solutions for a lifter system and bias system.

Curved finger lift were made by heating the tip with a heat gun and shaping it by hand - hot yes!!

DV

revintage 15th October 2008 07:01 AM

Great build! Just add a jewel V-cup and this is pro-stuff!

analog_sa 15th October 2008 07:14 AM

Forgot the most important (jealous) question: how do you get such clean cuts in the acrylic?

deltavektor 15th October 2008 07:28 AM

Quote:

Originally posted by analog_sa
Forgot the most important (jealous) question: how do you get such clean cuts in the acrylic?
The acrylic I use is protected by vinyl stick-on and I dont remove it until I am done. I cut the plastic with a "jig-saw" that is slowed down with a Variac so that it doesnt melt or rip it. After cutting I straigten the edges by sanding it on a piece of sandpaper placed on a flat surface. Easy.

deltavektor 15th October 2008 07:29 AM

Quote:

Originally posted by revintage
Great build! Just add a jewel V-cup and this is pro-stuff!
Thank you for your kind words Revintage! A friend of mine uses an engineering company that can work with jewel bearings - maybe I must get in touch with him.

deltavektor 15th October 2008 07:31 AM

I must admit that the counter weight also needs work. I am currently using an old brass buss-bar from a Mains DB Box. It gives me 1.8 grm tracking force on the dot. Also works as leveling weight by simply swinging it left or right...


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