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Thread: Fantastic (upgrade-tweak)for spindle

  1. #1
    Join Date: Sep 2009

    Location: San Francisco Bay, USA

    Posts: 18

    Default Fantastic (upgrade-tweak)for spindle

    Hello fellow Techies,
    I'm new here and this is my first post.I've been following this forum for about a year now with much admiration for all your passion and enthusiasm for the hobby.
    I want to share a significant upgrade with the community, which I learned from Kevin of KAB.
    The tweak involves damping the spindle and coupling the thrust plate to the plinth. This is done by using a small cube of collapseable wax which is inserted between thrust plate and plinth. The results are fantastic! Images float farther out of the speakers, the sound is more relaxed without any loss of dynamics. I honestly had to check to see if the speed was correct.
    Kab feels the stock bearing is fine by evidence of its test of time. I'm sure there will be a great new bearing developed soon , but for now this is a no brainer must do.
    Kevin says this wax can be found at a graffic arts store. He thinks it's called stationers wax. Brilliant!

    Stan

  2. #2
    Join Date: Jan 2008

    Location: Wrexham, North Wales, UK

    Posts: 110,089
    I'm AudioAl'sArbiterForPISHANTO.

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    Hi Stan,

    Welcome to AOS! Where are you from?

    Thanks for sharing the tweak. I can't comment on its efficacy as I haven't tried it. If Kevin recommends it though it must be worth doing.

    It'll be interesting to hear what Dave Cawley thinks - particularly as he has a bearing mod all of his own which I believe is imminent for release

    Marco.
    Main System

    Turntable: Heavily-modified Technics SL-1210MK5G [Mike New bearing/ETP platter/Paul Hynes SR7 PSU & reg mods]. Funk Firm APM Achromat/Nagaoka GL-601 Crystal Record Weight/Isonoe feet & boots/Ortofon RS-212D/Denon DL-103GL in Denon PCL-300 headshell with Funk Firm Houdini/Kondo SL-115 pure-silver cartridge leads.

    Paul Hynes MC head amp/SR5 PSU. Also modded Lentek head amp/Denon AU-310 SUT.

    Other Cartridges: Nippon Columbia (NOS 1987) Denon DL-103. USA-made Shure SC35C with NOS stylus. Goldring G820 with NOS stylus. Shure M55E with NOS stylus.

    CD Player: Audiocom-modified Sony X-777ES/DAS-R1 DAC.

    Tape Deck: Tandberg TCD 310, fully restored and recalibrated as new, by RDE, plus upgraded with heads from the TCD-420a. Also with matching TM4 Norway microphones.

    Preamps: Heavily-modified Croft Charisma-X. LDR Stereo Coffee. Power Amps: Tube Distinctions Copper Amp fitted with Tungsol KT-150s. Quad 306.

    Cables & Sundries: Mark Grant HDX1 interconnects and digital coaxial cable, plus Mark Grant 6mm UP-LCOFC Van Damme speaker cable. MCRU 'Ultimate' mains leads. Lehmann clone headphone amp with vintage Koss PRO-4AAA headphones.

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    Speakers: Tannoy 15MGs in Lockwood cabinets with modified crossovers. 1967 Celestion Ditton 15.


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  3. #3
    Join Date: Apr 2008

    Location: Cheltenham U.K

    Posts: 412
    I'm John.

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    Hi Stan. Any chance of some pics of this tweak? Could you describe it in more detail?
    Last edited by jonners; 05-10-2009 at 21:07. Reason: Added a bit more.

  4. #4
    Join Date: Apr 2009

    Location: Sheffield

    Posts: 2,027
    I'm Confused.

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    Wonder if a little blob of BluTac would serve the same purpose? - less messy, less likely to break up into the bowels of the Techie and much easier to put in and take out.
    Easy to try.
    Cheers,
    DaveK.

    My System:
    Power: Belkin PF40, Custom.hifi.cables Hydra and DC PSUs.
    Sources: Self built HTPC with Xonar ST sound card, NAD T585 multi disc player, Sony BDP-S350, Squeezebox Touch, Techncs SL1210 (mod'd) + Nagaoka MP30, Thomson Sky HD box.
    Amps etc.: 2 x Mini-T amps, MF-X10D Valve buffer clone, StanDAC 7520/Caiman (mod'd).
    Speakers: Mission 774s with added super tweeters
    Cables: best I can afford and likely to change except Homar's RF attenuated co-ax's and Mark Grant USB and HDMI cables. I also like silver i/cs and speaker cable.

  5. #5
    Join Date: Apr 2008

    Location: Cheltenham U.K

    Posts: 412
    I'm John.

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    Wax is slippery, BluTac sticky - not a good idea I think

  6. #6
    Join Date: Sep 2009

    Location: San Francisco Bay, USA

    Posts: 18

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    Hi guys,
    thank you Marco. I'm in the San Francisco Bay Area.
    Sorry no pictures, should have taken some. What I meant to say is that the wax is a compressible type. I used an approximately 1 by1/4 inch square in the well, finger seated it and alternately screwed down.
    Kab will have some announcement of this soon.

    Stan

  7. #7
    Join Date: Nov 2008

    Location: Dartmouth in beautiful Devon UK

    Posts: 1,244

    Question

    I think this is likely to damp the bearing and blu tack would be probably better?

    Stan, have you performed the modification yourself ? and exactly what material did you use ? and where did you get that material from ?

    Regards

    Dave

  8. #8
    Join Date: Jan 2009

    Location: Norwich

    Posts: 2,820
    I'm Hugo.

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    This sounds perfectly logical to me, and I would not be surprised if Dave Cawley has already been looking at ways of securing the bearing assembly more firmly to the alloy chassis.

    In my professional world, we used to use beeswax for securing accelerometers to equipment for vibration measurements. Beeswax has a very benign resonant characteristic, unlike blu-tak, adhesive tape and that sort of thing which act as the spring in a good-old-fashioned mass-spring system. I have a block of beeswax somewhere and feel a bit of an experiment coming on! It will make the Techy smell nice, if nothing else!

  9. #9
    Join Date: Apr 2009

    Location: Sheffield

    Posts: 2,027
    I'm Confused.

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    Quote Originally Posted by jonners View Post
    Wax is slippery, BluTac sticky - not a good idea I think
    Hi John,
    You may well be right - I assumed (always dangerous ) that both bits rotated so 'sticky' would not be a problem - silly me!!! .
    Cheers,
    DaveK.

    My System:
    Power: Belkin PF40, Custom.hifi.cables Hydra and DC PSUs.
    Sources: Self built HTPC with Xonar ST sound card, NAD T585 multi disc player, Sony BDP-S350, Squeezebox Touch, Techncs SL1210 (mod'd) + Nagaoka MP30, Thomson Sky HD box.
    Amps etc.: 2 x Mini-T amps, MF-X10D Valve buffer clone, StanDAC 7520/Caiman (mod'd).
    Speakers: Mission 774s with added super tweeters
    Cables: best I can afford and likely to change except Homar's RF attenuated co-ax's and Mark Grant USB and HDMI cables. I also like silver i/cs and speaker cable.

  10. #10
    Join Date: Apr 2008

    Location: Cheltenham U.K

    Posts: 412
    I'm John.

    Default

    Hi Dave

    From reading Stan's second post I would conclude that the wax is not in contact with any moving parts (is that correct Stan?), in which case BluTac would do no harm. However Shuggies beeswax idea sounds convincing and I've got some, but maybe I'll let him try it first...

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