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Lenco Heaven > Lenco-centric > PTP-based Projects > It's slowly taking shape.........(Orpheus)
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Author Topic: It's slowly taking shape.........(Orpheus)  (Read 13669 times)
Rotsch
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« on: July 09, 2013, 10:35:07 AM »
Mentioned it several times before, but one have to be patient...
I've pm'd Peter for permission, to post something about it....
Only restriction was ....not to post deeper details about "how to build and any measurements" !!!
I thankfully accept that and my deepest thanks to Peter  icon_thumright hello2

Ok, it's been a while since i started to collect several things for the build....
Especially there had to be an arm.......

I decided to take a RB300 as the main arm...... (sorry for the bad shot....but you'll know that arm !!)

......rewired and waiting to be installed.....maybe a few improvements will be done....(counterweight ect.!!)

Possibly ...the Tesla arm will take it's place.....a light arm with quick response... (Peter also mounted it with an Accutex)


Here it is still originally mounted on my L450 (but i got another one...incomplete)



The Rega and the Tesla has nearly the same mounting distance 222/220 afaik.....
So it could be mounted in the same adjustable armplate......

The Micro Seiki (MA303)has a distance from 207mm afaik !!?? ....so therefore i'll make an extra board at the rear.....


Made some drawings measurings.......


A few shots from the building of the PTP-plate .....


*deleted for privacy*  cool

Still not ready........but "It's slowly taking shape...."  laugh



Next step is the selection between different kind of materials for the "plinth"
I have the "ordinary" plywood.....and a 20mm alu-plate.......somekind of synthetic material........
ooooh....we'll see.....  angel

I'll keep you updated......

 wink
« Last Edit: February 25, 2015, 09:18:26 PM by Rotsch » Logged
Roger  icon_albino

"To play a wrong note is insignificant. To play without passion is inexcusable." -Ludwig Van Beethoven
itskeith
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« Reply #1 on: July 09, 2013, 10:38:04 AM »
Morning Roger,

We want more photo's and information please ...... now your just teasing  wink
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Keith
Rotsch
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« Reply #2 on: July 09, 2013, 10:43:57 AM »
Quote from: itskeith on July 09, 2013, 10:38:04 AM
Morning Roger,

We want more photo's and information please ...... now your just teasing  wink

I'm still updating the post....cause i posted it accidentaly to soon....be patient  wink

ANY further informations hints&tricks would be really appreciated !!!  Kiss
« Last Edit: July 09, 2013, 10:59:40 AM by Rotsch » Logged
Roger  icon_albino

"To play a wrong note is insignificant. To play without passion is inexcusable." -Ludwig Van Beethoven
Rotsch
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« Reply #3 on: July 10, 2013, 09:39:06 AM »
So...these will be the planned ingredients for the plinth.......  grin



Top and bottom plate (maybe two layers in between above and underneath the black )
will be made out of transparent polished "Lexan" .......
http://en.wikipedia.org/wiki/Lexan
Datasheet...
http://catalog.ides.com/Datasheet.aspx?I=28365&U=1&E=31507

to slightly illuminate the plinth.........  angel

Black one is somekind of softer synthetic material.....

The wood is....Guess !!!  laugh

Next night i'll probably make the first cut....which is the deepest....  shocked  laugh


To be continued...................
« Last Edit: July 10, 2013, 10:31:58 AM by Rotsch » Logged
Roger  icon_albino

"To play a wrong note is insignificant. To play without passion is inexcusable." -Ludwig Van Beethoven
Rotsch
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« Reply #4 on: July 12, 2013, 11:12:56 AM »
Last night i cutted the main layers ......Top/bottom/middle...
You can see the marked points , where the MA303 (upper left) and the RB300 (right side) will be mounted....
See the cut out for the idler-arm slider ....a lil bit bigger..have some hidden plans with it ...  cheesy
Although....plan was/is to power the motor through an inverter.....but it's better to have a "Plan B" if somfin goes wrong  wink










A workmate's coming by and says... shocked....."That'll be a BIG job"  undecided .... i said.....YUP !! ....
We're just at the beginning.......  laugh

This night i'll cut the LEXAN-sheets and thinking about the "arm-boards" ....
I imagined to build them round and eccentric...to change the P/S distance if needed....but we'll see....

There'll be definitely more to come.........  wink
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Roger  icon_albino

"To play a wrong note is insignificant. To play without passion is inexcusable." -Ludwig Van Beethoven
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« Reply #5 on: July 12, 2013, 11:23:16 AM »
Hi Roger,
That's looking good  cool
Could you do me a favour and accurately measure the mounting distance of the tesla arm on your L450? I believe the 222mm stated somewhere is not right, but I have never had the chance to check it on an actual turntable.
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Peter

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Rotsch
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« Reply #6 on: July 12, 2013, 11:40:40 AM »
Quote from: reinderspeter on July 12, 2013, 11:23:16 AM
Hi Roger,
That's looking good  cool
Could you do me a favour and accurately measure the mounting distance of the tesla arm on your L450?
I believe the 222mm stated somewhere is not right, but I have never had the chance to check it on an actual turntable.

Hi Peter..
Yes, it IS  STOP ....mm !!  moment.... Spindle is 7mm.....P/S is .... icon_scratch.....219,5 mmm !!!!!
Just like the "baerwald" suggested distance for the RB300 !!!  cheesy
Measured it once again......it is 219,5 !!!!!
Thanks for pointing me in that direction !!!

I'm really curious to hear the arm at the "clone" !!
At the 450 it is really a "lightfood" IYKWIM ....quick responds and agility....
But the plinth/electronics/underplatter ect of the 450 is a f*** sh**  laugh
Therefore i'll slaughter and dispose this one and implant the arm to the new deck....
Anyone interested in a L450 plinth !??  grin

But ..methinks...i've to enlarge the cutout at the idler wheel section...  undecided
We'll see.........
"This is the beginning of a great adventure...." .......or even a BIG "Baustelle"  laugh

Keep you updated......

PS: I still don't have or find a spare headshell for the Tesla..... angry
The day will come.......  azn
« Last Edit: July 12, 2013, 12:02:32 PM by Rotsch » Logged
Roger  icon_albino

"To play a wrong note is insignificant. To play without passion is inexcusable." -Ludwig Van Beethoven
Wout
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« Reply #7 on: July 13, 2013, 02:01:38 AM »
Peter, the instruction manual is on vinylengine.
It's in Czech but numbers and images are universal.

Mounting distance: 220mm +/-0.15
Eff. length: 235mm
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Wout
Rotsch
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« Reply #8 on: July 13, 2013, 03:09:09 AM »
Quote from: Wout on July 13, 2013, 02:01:38 AM
Peter, the instruction manual is on vinylengine.
It's in Czech but numbers and images are universal.

Mounting distance: 220mm +/-0.15
Eff. length: 235mm


Hi Wout !!
As Peter said...
Quote from: reinderspeter on July 12, 2013, 11:23:16 AM
Hi Roger,
That's looking good  cool
Could you do me a favour and accurately measure the mounting distance of the tesla arm on your L450?
I believe the 222mm stated somewhere is not right, but I have never had the chance to check it on an actual turntable.


Measured it this morning THREE TIMES !!
And Peter is right with his assumption that 222mm is the wrong mounting distance !!
At my L 450 the distance is exactly 219,5 mm !!!!  wink

Want piccies ???   smiley
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Roger  icon_albino

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Rotsch
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« Reply #9 on: July 13, 2013, 07:50:51 AM »
Quote from: Rotsch on July 13, 2013, 03:09:09 AM

Want piccies ???   smiley


Here we go......
Looks a li bit amateurish,but i don't have three hands to hold the caliper (that i used yesterday)
and take the photos......

Pivot-center......


Point at the OUTSIDE of the spindle... 223mm !


Spindle is 7mm ..................


............so you have to subtract half of the diameter ....3,5mm

223-3,5 = 219,5 !! Et voila !

@Peter:
First i even trust the datas at vinylengine....thanks for the hint !!

@Wout: Forum says....you're the King and i'got to tell you 503 !!  !!??  shocked
Quote
Something went wrong here. Please try again or PM Wout and tell him he is the King of Bugs.
Oh, and don't forget to tell him the error: 503 - Server Error - no image uploaded.


 laugh

" A great weekend" to you all !!  wink
 
« Last Edit: July 13, 2013, 08:57:57 AM by Rotsch » Logged
Roger  icon_albino

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« Reply #10 on: July 13, 2013, 11:54:45 AM »
Great Roger, thank you for doing the measurements. So we finally know now that it was originally mounted at 219.5mm.
It doesn't end there though...
I use one, and at first had it mounted at 222mm. It was impossible to align to Bearwald, I have it at 218mm now and that is still impossible to align without filing out the cart mounting slots in the headshell and twisting the cart in the headshell. I guess they used some "fantasy" alignment scheme.
The Acutex I use in it is very very sensitive to this and definitely didn't work properly in the original set up.
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Peter

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« Reply #11 on: July 13, 2013, 02:20:04 PM »
That is looking great Roger- that's going to be a beautiful table.   cool
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Scott

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« Reply #12 on: July 14, 2013, 12:19:46 AM »
Hi Roger,
I believe you!
Like I said: the official Tesla P1101 instruction manual says 220mm (not 222mm) so I'd say the Lenco factory wasn't too far off.  laugh
Overhang 15mm +0.5
Offset angle: 22°

But Peter is right, it still doesn't add up. Closest with standard inner and outer groove radius is Stevenson.
Overhang: 15.55
Offset angle: 22.17°

Quote from: Rotsch on July 13, 2013, 07:50:51 AM
@Wout: Forum says....you're the King and i'got to tell you 503 !!  !!??  shocked
 laugh
" A great weekend" to you all !!  wink
Yeah, I am the King of Bugs. But this time it wasn't me. Thanks Roger.   laugh cool
And a great sunday to you too.
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Wout
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« Reply #13 on: July 16, 2013, 02:51:36 AM »
Quote from: rfgumby on July 13, 2013, 02:20:04 PM
That is looking great Roger- that's going to be a beautiful table.   cool


We'll see, Scott  wink
Just the first faltering steps....  Roll Eyes

I'm still looking for an "armbord-solution" ...
I find this thread...and it's a lot of inspiration...
http://www.lencoheaven.net/forum/index.php?topic=4341.msg69658#msg69658

but...I would appreciate some more/other suggestions.......  cool
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Roger  icon_albino

"To play a wrong note is insignificant. To play without passion is inexcusable." -Ludwig Van Beethoven
itskeith
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« Reply #14 on: July 16, 2013, 04:43:03 PM »
Hi Roger,

Great link thanks. Haven't seen that post before and most useful.

Have an idea and will post it there.  smiley
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Keith
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