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Post by frankb on Jul 12, 2020 23:47:20 GMT
I'm doing a ground up resto on rather rough W2300S. I'm at the point where I'm trouble shooting mech and sound problems. I'm kind of stumped on a very noticeable WOW effect problem. It does it with every record I play on it. I have replaced the 4 turntable rubber motor mounts with ones I got on Ebay. I have a test record with a strobe disc glued on it that when I have it playing reads about 1% slow. If I lift straight up on the back of the turntable motor (side opposite the rubber mounts) with about 5 to 7 pounds of pressure - compressing and bending the rubber mounts, the speed goes up to 1% fast and the WOW is completely eliminated! Something tells me the rubber mounts are too hard and stiff or too big but I'm not sure what they should be like since the originals that were on it were really rotten. I also have new drive O rings on it. Anyone have to deal with this? Would the motor mounts from Victory Glass or Stamann be any different or softer? Thanks for any help.
-Frank Benner
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Post by Ron Rich on Jul 13, 2020 0:13:41 GMT
Hi Frank,
Are the new mounts you have metric, or, SAE threads-?- Statmann's are metric, and better, IMHO. I assume you have oiled the motor, turntable and the drive areas --- Ron Rich
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Post by frankb on Jul 13, 2020 3:16:54 GMT
The rubber mounts have SAE thread. Motor and turntable have been cleaned & lubed. Also adjusted the TT motor worm to pinion backlash as per the service manual.
- Frank
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Post by Ron Rich on Jul 13, 2020 12:31:50 GMT
Hi Frank,
I used the metric type--found them far superior-- Just my 2 cents worth ! Ron Rich
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Post by frankb on Jul 18, 2020 21:16:32 GMT
Yesterday I took the TT motor and brackets off again. Took everything apart for the 4th time and noticed the belt pulley which is set screwed to the pinion gear shaft wasn't on the shaft absolutely as far as it could go - giving the shaft about 1 to 1.5mm of side to side play. Loosened the set screw, pushed the pulley onto the shaft as far at it would go without binding and tightened. Put everything back together so that the worm gear was precisely centered under the pinion gear. All seems to be good now! I hope it stays like that. Now I have to figure out why none of the letters coils want to fire. Were working before I took the TT motor off. Good gosh these Wurlitzers are awfully finicky! I've been in this hobby for 30 years now, this is the first Wurlitzer I've worked on, my 9 other jukes are all Seeburgs and AMI's. What a terribly over engineered fussy/finicky machine!
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