New Solid Aluminium Platter for the SL1200

[Mike_New]

Hi Folks,
Rather than high jack the present thread in which I have posted some details of the new platter, I thought that it would be more appropriate to start another one which caters for those specific people who are interested in the new platter.

I have included an image of what is now the agreed production design. The black band around the periphery is the anti-resonance Neoprene ring. You can see the two holes for lifting bolts now included. These have been threaded 8mm and I would suggest that all is need is to fit two 8mm x 35mm socket head bolts. The holes are threaded 12mm deep for adequate lifting security. The top surface of the platter is 300mm in diameter.
The platter shown weighs 11.5lbs and sits 1mm higher than the standard one, although this will vary from deck to deck. This unit is destined for a Canadian customer.

The design assumes that the customer will need to swap out his magnet assembly into the new platter. This is very straight forward as an 8 pole pulse generator ring has been fitted to the platter and pre-aligned for correct rotation direction and phasing.

The new platter assumes the use of an external power supply as the existing transformer and power board will fowl it. Also you will require to increase the braking power by adjusting the pot. On my test rig the platter stops in ¾ of a turn from 45rpm, not bad eh!!