Post by Owen Y on Jan 23, 2017 7:52:37 GMT 12
You may recall the restoration I did on my nephew's early vintage Planar 3. With the 4.5mm thick felt mat & with the Rega Arm Height Spacer fitted, there was the problem with the RB202 arm counterweight hitting the acrylic lid. So, I made up a couple of black-painted 5mm MDF spacer blocks to lift the rear of the lid a bit when it's down - not too conspicuous...  
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Post by Owen Y on Jan 23, 2017 7:57:49 GMT 12
Now, with a new cartridge, a Sumiko Pearl in the wings to replace the Rega Carbon fitted, the problem is worse, as (i) the Pearl's elliptical stylus needs more precise VTA & (ii) the Pearl is a significantly taller cartridge....  VTA needs to come up a bit (0.7mm washers added to the Rega arm spacer which has only 2mm ht increments). A new, thinner Rega mat is on order. We may have to look at a smaller diam, RB300-style c'weight on the RB202 arm.
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Post by Owen Y on Jan 23, 2017 8:18:34 GMT 12
The Pearl fitted - the lid is OK when arm is on arm-rest, but needs to be off when arm is down on the record. (The Planar 3's glass platter is 12mm thick.) 
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Post by Deleted on Jan 23, 2017 9:04:57 GMT 12
Easier to get a custom lid fitted? Otherwise could you modify the rear of the plinth to raise the height of the hinge and then place rubber 'rests' at the front of the table?
If you approach a plastics firm directly - you can get lids done cheap I believe...
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Post by Graham on Jan 23, 2017 9:33:17 GMT 12
The Reverend Johnny H is correct.
I get my dust covers custom made by Cambrian Plastics in Henderson. Should cost $100 - $150 depending on size etc.
The original el cheapo plastic hinges are bound to break so I would replace them at the same time.
Cheers
Graham
PS - I can't get 'Fat Bottomed Girls' by Freddy Mercury out of my head !!!!
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Post by Owen Y on Jan 24, 2017 13:00:38 GMT 12
Thanks guys, not my TT, but that may be the Final Solution 
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Post by Owen Y on Jan 25, 2017 6:47:28 GMT 12
Further on the lid problem - I saw that a RP3 owner in Oz has simply slotted the screw holes vertically, on the lid hinge blocks & moved them up ~5mm. Fairly easy & tidy.
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Post by Owen Y on Feb 1, 2017 16:48:05 GMT 12
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Post by Citroen on Feb 1, 2017 19:02:52 GMT 12
And as he says they still run fast, and with the white belt even faster.
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Post by Owen Y on Feb 1, 2017 20:10:27 GMT 12
And as he says they still run fast, and with the white belt even faster. Yes, as someone once explained to me, a thicker drive belt means faster platter speed, because of the slightly increased rotational diameter & thus increased gearing - because this effect is greater on the small diam pulley than on the larger sub-platter wheel... 
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