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Audio and Video Talk
Vinyl
INFO wanted: SABC Mark3 TT
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<blockquote data-quote="Steerpike" data-source="post: 68411" data-attributes="member: 807"><p>Having removed the rotor, I now see the origin of The Big Bang! I don't think it was anything falling in there - it would have had to be something sharp that was forcefully poked in - piercing the insulation; or just old age. I see it's date stamped April 1976. Quite a major winding burnout - not anything as simple as resoldering a single strand.</p><p></p><p>That cylinder between the motor and the chassis I see now is ONLY a humongously robust bearing, with an eqally huge reservoir of oil. To relieve the motor bearing of having to take the great thrust of those unsprung idler wheels. That does make the choice of motors very wide - not having to worry about motor bearing specs. 1500 RPM it seems, which is not rare.</p><p></p><p></p><p></p><p>I still have much to do... and the SP10 has to get primary attention (which will make Shonver happy).</p></blockquote><p></p>
[QUOTE="Steerpike, post: 68411, member: 807"] Having removed the rotor, I now see the origin of The Big Bang! I don't think it was anything falling in there - it would have had to be something sharp that was forcefully poked in - piercing the insulation; or just old age. I see it's date stamped April 1976. Quite a major winding burnout - not anything as simple as resoldering a single strand. That cylinder between the motor and the chassis I see now is ONLY a humongously robust bearing, with an eqally huge reservoir of oil. To relieve the motor bearing of having to take the great thrust of those unsprung idler wheels. That does make the choice of motors very wide - not having to worry about motor bearing specs. 1500 RPM it seems, which is not rare. I still have much to do... and the SP10 has to get primary attention (which will make Shonver happy). [/QUOTE]
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Audio and Video Talk
Vinyl
INFO wanted: SABC Mark3 TT
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