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Audio and Video Talk
The Vintage Audio Section
Rebuild a Thorens E50 Motor
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<blockquote data-quote="handsome" data-source="post: 1179106" data-attributes="member: 772"><p>According to analoguedept.com: “The easiest way to accomplish a proper alignment between upper and lower bushings is by assembling the motor without firmly tightening the 4 bolts that hold the assembly together. Leave the nuts just barely loose enough to allow shifting position at both upper and lower case ends. This allows one to move one case end and the other by hand. The object is to arrive at an alignment that allows the longest spin-down time when the rotor is spun between thumb and fore-finger. Greater than 10 seconds is the goal. By hand. when this is achieved, tighten the 4 bolts and do the spin test again. You are done when the four bolts are tight (not too tight) and the spin test results in the same 10 seconds or greater spin down times. The goal is for the rotor to turn as freely as it possibly can.”</p></blockquote><p></p>
[QUOTE="handsome, post: 1179106, member: 772"] According to analoguedept.com: “The easiest way to accomplish a proper alignment between upper and lower bushings is by assembling the motor without firmly tightening the 4 bolts that hold the assembly together. Leave the nuts just barely loose enough to allow shifting position at both upper and lower case ends. This allows one to move one case end and the other by hand. The object is to arrive at an alignment that allows the longest spin-down time when the rotor is spun between thumb and fore-finger. Greater than 10 seconds is the goal. By hand. when this is achieved, tighten the 4 bolts and do the spin test again. You are done when the four bolts are tight (not too tight) and the spin test results in the same 10 seconds or greater spin down times. The goal is for the rotor to turn as freely as it possibly can.” [/QUOTE]
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Audio and Video Talk
The Vintage Audio Section
Rebuild a Thorens E50 Motor
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