Another DIY Tonearm

johnmarkp · 21st April 2008, 11:23 PM

I was interested in the Well Tempered tone arm and thought it would make an interesting project to build an arm bosed on their design. I decided to make a "proof of concept" version first. I used an old golf shaft for the arm and the outer barrel from a WBT knock off RCA connecter. The counter weight is from a Rega P2 and the head shell from some Sony. I got some silver plated copper wire with teflon insulation off ebay. The most expensive thing was the Cardas cartridge clips. As you can see I used two compases for the support. This actually works really well, providing all the adjustments needed for any cartridge. The arm board is delrin as is the block that the compases are mounted on. I used a plumbing end cap for the fluid well and got the damping fluid as a sample from Dow Corning. Finally I filled the arm with sand for damping. The effective length is 10.6 inches. All this sits on an older P2. How does is sound, well I was shocked to say the least. I have not made any move to build another one as I originally expected. My test version works that good. I use a Rega Elys II (much better then the original) into a BAT VK3i with phono board. I have owned several Regas, a Scout and used many cartridges with all of them. This rig holds up to all. It funny how sometimes in DYI things just work. I have had many projects not work out. Without the money to make many prototypes etc, it just come down to luck.

d to the g · 22nd April 2008, 04:12 PM

I really like the idea, and have given it some thought myself. Any chance we can get a bigger picture?

Glad it worked for you on the first shot. I'm still trying to get the energy to build myself a nice ladegaard.

nafanja · 24th April 2008, 04:05 PM

It's looks very fine.

But can You help me to make it by me?
Write me to me e-mail if You can
sup-nik@ukr.net

jonnywolfet · 25th April 2008, 07:46 AM

i would also very much like to see bigger images.
your implementation of the compass is interesting, what role does it peform specifically? so that i can rip off your idea?

johnmarkp · 26th April 2008, 02:17 PM

I uploaded images to this page:

http://webpages.charter.net/rustysdad

The compasses allow for VTA and tracking angle adjustments. Plus the anti skate can be set by changing the space between them. Notice the small wire to hold them together.

EC8010 · 27th April 2008, 09:21 AM

If you would like to email me, I can send you some scans of an article describing how to design the progenitor of the Well Tempered arm.

jonnywolfet · 28th April 2008, 03:38 PM

EC8010, i wanted to e-mail you about those scans, but it seems that you have that option turned off in your profile. i am very interested in seeing those designs.
thanks.

johnmarkp, thanks for taking the time to upload those pictures.

d to the g · 28th April 2008, 03:40 PM

Quote:

Originally posted by jonnywolfet
EC8010, i wanted to e-mail you about those scans, but it seems that you have that option turned off in your profile. i am very interested in seeing those designs.
thanks.

johnmarkp, thanks for taking the time to upload those pictures.

ditto on both counts.

240z4u · 28th April 2008, 08:41 PM

HAHA too cool! I love it. I have a well tempered arm.

Nice dog too, he/she looks cozy!

jonnywolfet · 17th May 2008, 04:04 PM

EC8010, i would still love to see those scans if at all possible.

24th April 2008, 04:05 PM	#3
nafanja diyAudio Member Join Date: Mar 2008	About tonearm It's looks very fine. But can You help me to make it by me? Write me to me e-mail if You can sup-nik@ukr.net __________________ Shippment: $:Europe: 1,2 x (16+2,45 x Weight(kg)) N. Amerika & Asia: 1,2 x (10 +4,9 x Weight(kg))

27th April 2008, 09:21 AM	#6
EC8010 diyAudio Moderator Join Date: Jan 2003 Location: Near London. UK	If you would like to email me, I can send you some scans of an article describing how to design the progenitor of the Well Tempered arm. __________________ The loudspeaker: The only commercial Hi-Fi item where a disproportionate part of the budget isn't spent on the box. And the one where it would make a difference...

28th April 2008, 08:41 PM	#9
240z4u diyAudio Member Join Date: Dec 2004 Location: Madison WI	HAHA too cool! I love it. I have a well tempered arm. Nice dog too, he/she looks cozy! __________________ Yeah... it seemed like a good idea at the time.

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22nd April 2008, 04:12 PM	#2
d to the g diyAudio Member Join Date: Aug 2006 Location: minimalopolis	I really like the idea, and have given it some thought myself. Any chance we can get a bigger picture? Glad it worked for you on the first shot. I'm still trying to get the energy to build myself a nice ladegaard.

25th April 2008, 07:46 AM	#4
jonnywolfet diyAudio Member Join Date: Dec 2005 Location: london UK	i would also very much like to see bigger images. your implementation of the compass is interesting, what role does it peform specifically? so that i can rip off your idea?

26th April 2008, 02:17 PM	#5
johnmarkp diyAudio Member Join Date: Apr 2004 Location: Wisconsin	I uploaded images to this page: http://webpages.charter.net/rustysdad The compasses allow for VTA and tracking angle adjustments. Plus the anti skate can be set by changing the space between them. Notice the small wire to hold them together.

28th April 2008, 03:38 PM	#7
jonnywolfet diyAudio Member Join Date: Dec 2005 Location: london UK	EC8010, i wanted to e-mail you about those scans, but it seems that you have that option turned off in your profile. i am very interested in seeing those designs. thanks. johnmarkp, thanks for taking the time to upload those pictures.

17th May 2008, 04:04 PM	#10
jonnywolfet diyAudio Member Join Date: Dec 2005 Location: london UK	EC8010, i would still love to see those scans if at all possible.

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