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Post by karma67 on Dec 18, 2021 17:43:51 GMT
my panzerholz board arrived mid week and today the postman delivered some bearing grade torlon.
Ho Ho! Whats the plan? im going to have a bash at making the spindle thrust cap. |
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Post by rexton on Dec 18, 2021 20:32:19 GMT
Didn't you do something with the JVC? Did it make any difference?
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Post by karma67 on Dec 18, 2021 20:34:54 GMT
not me,i dont own a JVC
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Post by rexton on Dec 18, 2021 20:46:08 GMT
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Post by karma67 on Dec 19, 2021 8:10:07 GMT
Didn't you do something with the JVC? Did it make any difference? yes it did,it made a big difference to the noise floor which in turn let more detail through . Angus made me some bearings and he also did a thrust pad in torlon. Im keen to try myself this time round. You should try some in your crossley.  |
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Post by rexton on Dec 19, 2021 9:40:01 GMT
Incidently, it's "Crosley" not Crossley  . This is probably more my level of TT !!!!!! |
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Deleted
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Post by Deleted on Dec 19, 2021 11:58:12 GMT
This is probably more my level of TT !!!!!! I think I have seen that some where else recently? (Looks at Rexton Crossly). |
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Post by sq225917 on Dec 19, 2021 12:57:29 GMT
Crosley, lol, shots fired
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Post by rexton on Dec 19, 2021 13:36:17 GMT
(Looks at Rexton Crossly). Neat pun! I have no retort.......yet! |
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Post by karma67 on Dec 31, 2021 11:34:29 GMT
the plinth build started today,as always a template needed to be made first.  |
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Post by antonio on Dec 31, 2021 11:45:13 GMT
Well done in making a start.
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Post by gninnam on Dec 31, 2021 11:51:35 GMT
Well done in making a start. +1  |
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Bigman80
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Posts: 16,398
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Post by Bigman80 on Dec 31, 2021 12:10:05 GMT
the plinth build started today,as always a template needed to be made first. Any veneer going on the Panzer? |
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Post by karma67 on Dec 31, 2021 13:54:52 GMT
No Oli,this will be sprayed satin black. it will have sides to it as well but i want to get it up and running first and see how it sounds. So on to the next step and router out the panzerholz,easier said than done if you've ever used the stuff  /  and voila!  I've got to drill the holes next but that tomorrows job,i also need to decide if im going to do a small chamfer or round over the edge's. |
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Bigman80
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The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,398
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Post by Bigman80 on Dec 31, 2021 14:18:42 GMT
No Oli,this will be sprayed satin black. it will have sides to it as well but i want to get it up and running first and see how it sounds. So on to the next step and router out the panzerholz,easier said than done if you've ever used the stuff / and voila! I've got to drill the holes next but that tomorrows job,i also need to decide if im going to do a small chamfer or round over the edge's. Excellent. Looks good! |
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Post by gninnam on Dec 31, 2021 15:03:25 GMT
Chamfer at the minimum I would say - coming on nicely |
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Post by sq225917 on Dec 31, 2021 17:58:14 GMT
What's the interface between motor unit and plinth, any material or just dropped in?
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Post by karma67 on Dec 31, 2021 18:47:01 GMT
What's the interface between motor unit and plinth, any material or just dropped in? just dropped in si |
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Post by sq225917 on Dec 31, 2021 22:17:35 GMT
Worth tinkering with little rubber pads and one hard contact point, try various locations.
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Bigman80
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The HiFi Bear/Audioaddicts/Bigbottle Owner
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Post by Bigman80 on Dec 31, 2021 23:41:11 GMT
Doesn't that defeat the object of putting it Panzer?
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Post by sq225917 on Dec 31, 2021 23:56:46 GMT
Oli, What do you think the point of the panza is? To isolate from the ground up, or to act as a sink from the top down? Or a bit of both at different frequencies, amplitudes and different locations?
I don't know the answer, I suspect its rather complex. I also suspect the interface between underside of the motor unit and top of panza isn't engineering flat.
So constraining the contact point/s and defining a specific route to ground, ( that you can position at the point of most noise, closest to centre of mass) could be a goer.
If it were mine I'd weigh each corner of the motor unit in turn by placing a support under one corner, on a rigid support and then a strain gauge under the opposite corner to work out if there is a significant weight offset from the centre. If there is I'd put this heavy corner on a hard point and place two 'soft' points half way along one side from the opposite corner. Three points, no rocking.
Then I stethoscope the Sh#t out of it next to the arm mount, and rinse repeat.
Gotta be worth a go.
At some point I'll get round to doing that labyrinth cut out idea i had on my own plinth, between motor and chassis.
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Bigman80
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The HiFi Bear/Audioaddicts/Bigbottle Owner
Posts: 16,398
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Post by Bigman80 on Jan 1, 2022 0:31:14 GMT
Oli, What do you think the point of the panza is? To isolate from the ground up, or to act as a sink from the top down? Or a bit of both at different frequencies, amplitudes and different locations? I don't know the answer, I suspect its rather complex. I also suspect the interface between underside of the motor unit and top of panza isn't engineering flat. So constraining the contact point/s and defining a specific route to ground, ( that you can position at the point of most noise, closest to centre of mass) could be a goer. If it were mine I'd weigh each corner of the motor unit in turn by placing a support under one corner, on a rigid support and then a strain gauge under the opposite corner to work out if there is a significant weight offset from the centre. If there is I'd put this heavy corner on a hard point and place two 'soft' points half way along one side from the opposite corner. Three points, no rocking. Then I stethoscope the Sh#t out of it next to the arm mount, and rinse repeat. Gotta be worth a go. At some point I'll get round to doing that labyrinth cut out idea i had on my own plinth, between motor and chassis. Its too late to be thinking and others are better placed to think about that from am engineering POV. I'm sure Jamie will do something cool with it. Hey, he could stick four Houdini's under the corners of the motor..... 🤣 |
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Post by gninnam on Jan 1, 2022 1:33:37 GMT
I would not bother with that. The plinth should soak up the energy from the TT motor and surrounding metal work. What he needs to do is make sure this is either: a. filtered to ground using cones b. dissipated as heat/energy using springs/rubber Will be good then |
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Post by robbiegong on Jan 1, 2022 1:56:17 GMT
The interface approach that Angus champions and works to is pretty faultless in my own experience, the plinth, spike feet, acrylic type shelf, vibrapod, main shelf see here for a better view/idea audioaddictsforum.com/thread/1687/robbiegongs-systemSo glad I followed his advise |
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Post by gninnam on Jan 1, 2022 2:17:18 GMT
So, the recommended way is to ground via spikes to a base which is then ??
I assume decoupled from the rack with something squishy?
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Post by karma67 on Jan 1, 2022 9:56:13 GMT
Regarding the use of panzerholz as a plinth material,i dont have any measurement info for it(nor do i understand them) but they're out there on the web,username catssquirrel has tested samples of it and rates its propeties highly. What i can say is i've used it as armboards and plinth top plates and its just works better than the usual ply or mdf examples. This rare Sony TB-1000 plinth for the TTS-8000 interests me,its a 2 part plinth,the vintage knob site says this on it. TB-1000 and TB-2000, the official ones, are based on that of the PS-6750 : a massive SBMC piece (Sony Bulk Mold Compound) is placed on a supplementary slab of compressed wood particles, the interface between the two being four enormous rubbery cushions with a guide so as to keep the two pieces perfectly aligned. This is something i could do to the plinth for the SP10 substituting the resin top for the panzer and using vibrapods between the 2 maybe. Here's some pic of my TB-1000 plinth so you get the idea.  the separated plinth showing the rubber? 1 of the 4 pads and guides.  Regarding feet i plan to use the same as the ones i made for my other sony plinth,panzerholz cones threaded into an aluminium base with CLD discs between them and the base shelf. They work really well.  |
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Post by pete on Jan 1, 2022 12:02:16 GMT
The interface approach that Angus champions and works to is pretty faultless in my own experience, the plinth, spike feet, acrylic type shelf, vibrapod, main shelf see here for a better view/idea audioaddictsforum.com/thread/1687/robbiegongs-systemSo glad I followed his advise Where did you get the acrylic for your shelf Rob? |
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Post by robbiegong on Jan 1, 2022 12:53:47 GMT
The interface approach that Angus champions and works to is pretty faultless in my own experience, the plinth, spike feet, acrylic type shelf, vibrapod, main shelf see here for a better view/idea audioaddictsforum.com/thread/1687/robbiegongs-systemSo glad I followed his advise Where did you get the acrylic for your shelf Rob? Hi Pete, I've no idea where it was sourced as it was part of a complete service provided by Angus in regards to my SP10, so service, plinth, plinth fitting and all the isolation and platform - an A1, quality job from the man, that I can tell you |
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Bigman80
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Post by Bigman80 on Jan 2, 2022 10:35:26 GMT
Saw this earlier and I love the idea of an Aluminium block under some veneered Panzer  |
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Post by karma67 on Jan 2, 2022 11:08:08 GMT
Saw this earlier and I love the idea of an Aluminium block under some veneered Panzer yep i like the look of that too, i'd do silver sp10 tt body on black panzer on brushed aluminium sub plinth. hmmm you've got me thinking! |
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. This is probably more my level of TT !!!!!!
