Your right it would be a small nightmare to make..I've an idea would it be possible to make a Linn type mounting collar with a specified diameter bore?Quote:
Originally Posted by speedy.steve
I don't want the scoupe in it as pictured but i do want side entry grub screw. I could try get one to work from! Only requires three tapings undeside for fixing to deck.
http://i12.photobucket.com/albums/a2...SIN/Collar.jpg
Looks reasonable.Quote:
Originally Posted by Andre
Something to work from would be good to get the underside tappings in exactly the right place.
Brill i'll see if i can locate one..Quote:
Originally Posted by speedy.steve
The sad thing is that you couldn't give LVV arms away not that long ago, and the base plate was the same as the Ittok one. I don't know why, but the LVV now sells for more than the LVX quite often - £100 or so.. Madness IMO
Herewith & attached a recent pic of my Techie 1210 with special heavy brass c/weight by speedysteve for my massive re-bodied Denon 103.
I've had the c/w a while and it does an excellent job .... but the brass colour just increasingly irritated me! ... such a sharp contrast with everything else on the deck.
So for a couple of £ on good ol' fleaBay I picked up a small jar of silver chrome paint .... ah, that's better! :)
[Ackcherly - the silver paint job hasn't come out well with the camera flash - the actual beastie looks better than that].
http://i262.photobucket.com/albums/i.../cwtchrome.jpg
Mr Coco being a clever sort of chap who needed a big CW for his Alphason / IO lump:) did some research as to metal densities and came up with Tungsten being good and dense. Bit hard to work Tungsten perhaps so a Tungsten / Copper alloy was found.
According to the Coco metal density bible, densities are:-
75% Tungsten 25% Copper – Density 14.75
Tungsten Alloy – Density 16.9
Tungsten 99.95% - Density 19.3
Molybdenum 99.95% - Density 10.22
Steel is 7.8ish and brass is 8.5ish. So the copper/tungsten is about twice as much.
Here is a first weight made up for my arm (12" wand on PL-71 arm base & SPU Silver Meister cart).
Here is the comparison with the lash up I was using before - moves the mass much further in!
Slightly pink copper look that will dull as it slowly oxidises.
Moving the mass in is apparently a good thing to do - reduces the inertia and looks better not having a lump hanging over the end...
https://uploads.tapatalk-cdn.com/201...e4b8fd742c.jpg
Looks great Steve. I'd forgotten you are doing these - I need to sort something for my SME 3009 S2 Improved now I am running a Sumiko headshell, currently lashed up with two 50p pieces and some white-tack - it should be a fairly straightforward job, just a cylindrical weight with a thread and then a threaded piece:
Basically this is the standard one, and it needs to be heavier. Is that something you would be able to do? (And rough cost - PM if you like.) Cheers!
Here is a CW for Mr Coco. He wanted 240g which would be rather large in brass or SS.
This is to balance his IO electromag cart...
He found Tungsten - I said isn't that rather hard to work? So Tungsten copper alloy was the trick, being pretty heavy - just 10cm of it at 41mm dia weighed 2.4kg!
Here is the new weight vs the Alphason ~ 100g one.
Note the inner nylon sleeve which presumably acts as a dampening. The grub actually presses the nylon tube onto the
CW arm stub.
The slight salmon tinge is quite nice and fades away a bit with some weathering.
https://uploads.tapatalk-cdn.com/201...30d0caf6d6.jpg
Here is a brass CW for AOS member naimless.
120g to replace the lost CW for his PL-71.
Handy that I have a PL-71 to test it on.
https://uploads.tapatalk-cdn.com/201...6e9fe3b004.jpg
Alex, I don't mean to stand on Mr Speedy's toes, but don't SME themselves do a heavier screw-in counterweight for the "improved" 3009S2? I'm sure Steve could make you up something special though as long as he knows the thread pitch needed.Quote:
Originally Posted by Alex_UK
Can't you do what they did with the Syrinx PU2 with the additional Mass ring, this would be the best way for obvious reasons.Quote:
Originally Posted by Alex_UK
Yes, they do, but based on the price of the standard one it would be at least £50 delivered inc. VAT. I had/have bought one off ebay for £20, but the seller has been an f'in nightmare, took ages to send it, and then when it came it wasn't the heavy (140g) one at all, but a standard one at 108g! So now looks like I will have to go back to the drawing board I suspect. To be fair, the 50ps white-tacked to the end hardly notice anyway... I may just find a suitable cover instead. (Been trying various platic bottle tops eg. fabric conditioner, one of which may actually work ok trimmed down and sprayed silver!)Quote:
Originally Posted by DSJR
Don't know that arm Andre, but did think that maybe Steve could just machine a sleeve or "cup" that fitted around the current weight, adding the extra 32g or so that I need. Having just Googled Syrinx PU2, I think that is basically the same idea - thanks.Quote:
Originally Posted by Andre
The Syrinx was slightly different, as the mass ring fitted over the whole lateral bearing assembly, giving asymetric inertia - more lateral inertia than vertical with ring fitted.
I wish SME would re-consider their spares pricing structure. It's not as if dealers have huge margins on their products either I understand ;)
Hi DaveQuote:
Originally Posted by DSJR
Thought youd be along to say that :lolsign: , your correct of coarse. I was just thinking about doing the same but fixing it to the weight instead, save machining cost aswell id have thought
Latest weight
A 150g in Tungsten copper alloy for a SL-1210 for a chap in Italy.
Rather interesting idea - 3 extra holes for grub screws to add / remove weight!
Unfortunately he had to wait a while as the belt on my lathe broke and I was waiting for a new one to arrive before I could finish the piece.
https://uploads.tapatalk-cdn.com/201...cf138ec70b.jpg
Hi Steve, you certainly do a very neat job :)
I might need a new weight machining for my Aiwa AP2600 which is fitted with a standard arm. That may one day change.
I guess i'll find out when i fit a Sumiko headshell & a modified Denon DL103 :eyebrows:
Now from what i gather you don't trust the standard adjusters & you like to directly connect the counterweight (though possibly via a nylon bush?) to the arm proper?
If that's the case & i work out what mass i need, if i measure the arm with a micrometer would you be able to machine a new counterweight for me or would you need other information?
Thanks in advance :)
It depends on the stub arrangement. My PL-71 arm has a damped stub and a weight carrier with spiral adjuster on the stub - weights just need to sleeve over that and grub in.
Other arms are simply counterweight grubbing on to arm stub like Rega.
It was the Alphason arms that had a nylon inner sleeve with the grub acting on the nylon to clamp through to the stub so I copied that arrangement.
Making a a spiral screw to work like the commercial arms have is beyond my DIY set up so it's choose from one of the above.
I think there is definitely something to be said for damping the stub or the CW in some way on some arms.
If you know the weight and outer and inner diameter needed I can calc the length to get that weight. Brass it has to be as I don't want to machine SS and the Tungsten copper alloy is only a special order and will be a lot more expensive.
Latest work - a Rega R200 12" conversion.
https://uploads.tapatalk-cdn.com/201...822846ce32.jpg
First remove the old butt plug and cable
https://uploads.tapatalk-cdn.com/201...d4b1fba09b.jpg
Wand fitted & wired with Silver Litz
https://uploads.tapatalk-cdn.com/201...e856a02da7.jpg
Then a counterweight
https://uploads.tapatalk-cdn.com/201...01d867bcaa.jpg
and a VTA adjustable base (the original was plastic and you had to add or remove bits making it very crude)
https://uploads.tapatalk-cdn.com/201...913f84f760.jpg
Cardas din plug
Awaiting the 90deg angle socket to finish the project.
https://uploads.tapatalk-cdn.com/201...74672a91d8.jpg
Nice job :)
Regards D S D L
Then it was just to make up the Cardas socketed lead (also Litz Silver
https://uploads.tapatalk-cdn.com/201...ac8646c935.jpg
https://uploads.tapatalk-cdn.com/201...b0fee516c0.jpg
Set up and test with a couple of carts
Note the target weight for the CW was a normal weight headshell and cart but it handled the Sumiko and SPU Royal N fine with the CW a little farther out than I would recommend - did sound good!
https://uploads.tapatalk-cdn.com/201...600e1fa08f.jpg
https://uploads.tapatalk-cdn.com/201...90a7a66bd0.jpg
Nice job steve..
looks real nice :)
Oh no Steve, you've really got me thinking now....... How easy is it to fit the variable height pieces? The plastic spacer has good and bad about it and is the main weakness I think and I'd love to be abe to adjust the playing height ;)
Hehe, fiddlers paradise!Quote:
Originally Posted by DSJR
I can't PM speedy.steve. Are you still offering this service?
Hi Scott,
Welcome to AoS :)
New members are required to post a minimum of five times on the forum before their PM facility is activated. This is to prevent instant spamming by any trolls.
However, in between the five posts minimum posting period, visitor messages can be sent to whomever you wish.
Furthermore, all new members are asked to pop into the welcome area and introduce themselves to our community, outlining their system and music tastes, so please do so on your next visit - cheers! :cool:
Marco.
Ah. I noticed that I was able to PM you, so assumed that the block was specific to speedy.steve. I'd overlooked that you are the site owner, and so any new-user PM limitations probably don't apply. I'll be back... :)
Cool, Scott - no worries :)
Marco.
Have sent you a pm skriefal - Happy to make you up one.
Latest weights.
One for Finland for a SL-1210
https://uploads.tapatalk-cdn.com/201...726310ff25.jpg
One for Oxford for PL-71
https://uploads.tapatalk-cdn.com/201...8786853084.jpg
It's a perfect fit. Many thanks to Steve!
Great.
Quote:
Originally Posted by HdS
I found this page through Google. The rig I've been building is a massive 18g AT-LH18 headshell with a Denon 103 on a KAB 1200. The poor counterweight can't take it, even with the auxiliary weight added! Are you still in the counterweight business, I hope?
I've sent you a message
Quote:
Originally Posted by cesrig
Dear Steve,Quote:
Originally Posted by cesrig
My requirements are similar to Cesrig's.
I also have a 18g AT-LH18 headshell with a Denon 103 cartridge.
The only difference is that my turntable is a Technics SL1210M5G with the stock tonearm.
Are you able to fashion a suitable counterweight for me based on your experience for your other customers?
Please PM me as I am also a newbie to this Forum.
Dear Cesrig,
Sorry to tap into your post. ;)
I also googled my way and ended up here in this lovely Forum.
Hmm, I can't edit my prior posts in this Forum.Quote:
Originally Posted by Lord Soth
Dear Steve,
Please ignore my above-mentioned request.
I've decided to give my Denon Cart and AT Headshell to another audiophile friend of mine.
The above combo is just not meant for a stock Technics tonearm.... :doh:
I've decided to get an Audio Technica cart instead. This will save me all the needed upgrading pain.
:cool: (Cheers!)
Hi Fred, you can edit them but the option evaporates into the ether after 24 hours ;)Quote:
Originally Posted by Lord Soth
That's my counterweight there! Now fitted to the Pioneer and all set up nicely. The weight we calculated is spot-on. Many thanks to Steve - and sorry I didn't thank you earlier.
Here are couple more...
210g for a Jelco
https://uploads.tapatalk-cdn.com/201...d556de322b.jpg
204g
https://uploads.tapatalk-cdn.com/201...8a2b8bf5fb.jpg
180g offset
https://uploads.tapatalk-cdn.com/201...5d306d2bc2.jpg
The 210 gram for a Jelco is mine, I only asked Steve to make it last night:eek:
Hi Steve,Quote:
Originally Posted by speedy.steve
I've sent you a PM
Regards,
Dave
Here it is Dave.
https://uploads.tapatalk-cdn.com/201...fe0d0b99f2.jpg
EBONY!
Started as a 5" x 5" x 2" lump.
All waxed and hard to tell what it was like.
Spun the corners off
https://uploads.tapatalk-cdn.com/201...a68a21e998.jpg
Smoothed a bit
https://uploads.tapatalk-cdn.com/201...ec3862b7d0.jpg
Then a bit more and and as a quick test with some oil on to see how black it really goes
Pretty dark
https://uploads.tapatalk-cdn.com/201...1cd590c19a.jpg
Lots more turning and smoothing to go but it is going to look all right I think.
Hehehe... Not just ANY old SL-1210, boyo, but the main man's one! :eyebrows: ;)
Looking good so far, Steve. I love the depth of colour it's got in the last picture, after having been oiled - gorgeous! :stalks:
I have a good feeling about this armboard, both in terms of sonics and aesthetics! Looking forward to seeing further pics of progress - you're doing a great job so far, mate :cool:
Marco.
Nice work :) Watch out Elf 'N' Safety don't try to track you down with all those belts everywhere :D
Just kidding ;) I have to think of everything before I switch on my bench saw, I'm sure you do the very same Steve ;)
hehe - it's a 1940's Southbend lathe. What is H&S?
Why would you put your fingers anywhere near the belts when it's on?
Yes the table saw is much scarier - One of the technicians at our school (we had some serious kit there) chopped his thumb clean off on the table saw - Gold only knows what he was trying to do - I can't imaging putting my thumb anywhere near the blade - there are more imaginative ways to prod wood through than that!
I believe in the Darwin awards:-)
Exactly, I'm on your side of the fence :eyebrows:Quote:
Originally Posted by speedy.steve
Looks like ebony has excellent sonic properties, otherwise they wouldn't be using it to make armtubes for these babies:
http://www.da-vinci-audio.com/#/tonearm/
;)
Marco.
Hi Steve,
Try and bring out the natural colour of the wood as much as possible :)Quote:
Then a bit more and and as a quick test with some oil on to see how black it really goes...
Marco.