Sign in   |  Join   |  Help

Search

  • Re: Beogram 3000 motor

    I used this post as a guide: https://forum.beoworld.org/forums/t/30994.aspx Good luck. I hope yours goes better than mine. I still have not fixed the speed problem, which is always the same: starts at a normal running speed, but slowly speeds up over the course of an hour. I think motor replacement is the only option for my particular turntable.
    Posted to The Workbench (Forum) by scorron on Wed, Oct 16 2019
  • Re: Beogram 3000 motor

    Thanks, Nick! I actually have the reverse problem: motor performs at a near-normal speed as soon as it is turned on, but then speeds up over the next 20 - 30 minutes. I can adjust the speed to 33 RPM when cold, but by the time the turntable has run for a while, it is running quite fast, according to the strobe, anyway. I will check the coil resistance. I'm not opposed to rewinding a motor, if I must. Appreciate the perspective. The fellow on Vinyl Engine is of the opinion that it is a rotor problem
    Posted to The Workbench (Forum) by scorron on Wed, Sep 11 2019
  • Re: Beogram 3000 motor

    I played the Beogram 3000 again last night, and according to the strobe, it is still running slow at startup (when cold) but speeding up gradually over the first 15-20 minutes. I have read that this was a problem even when the motors were brand new - is that correct? Has anybody found a solution other than motor replacement? The my ear, the speed is steady and consistent from one moment to the next, but over time it definitely speeds up considerably. That's a little annoying, but I guess I can
    Posted to The Workbench (Forum) by scorron on Tue, Sep 10 2019
  • Re: Beogram 3000 motor

    [quote user="Dillen"] Wrong oil. The motors were fine when new. Where did you read anything else? At some point B&O issued a tech note about their stock of replacement motors getting old (decades), and that they could no longer guarantee, that the motors would run out of the box without servicing. That was because their replacement motors was produced at the same time as the Beograms in which they were used, and the oil in the bearings dry out regardless of use. Martin [/quote] I respectfully
    Posted to The Workbench (Forum) by scorron on Tue, Sep 10 2019
  • Re: Beogram 3000 motor

    I used this oil: https://www.schaefferoil.com/moly-spindle-oil.html Does it look like it has the appropriate additives? I obtained a small quantity of the oil from a sewing machine repair shop. They find it has the qualities they need for long term operation and lubrication of the electric motors. I appreciate your advice and followed it exactly. Thank you.
    Posted to The Workbench (Forum) by scorron on Tue, Sep 10 2019
  • Re: Beogram 3000 motor

    Thanks again for the advice. I built a small vacuum chamber using a hand pump vacuum brake bleeder and a 1/4” brass nipple epoxied into a mason jar lid. It held -25 inches of mercury for 16 hours until bubbles stopped coming out of the bearings. I used a sewing machine/spindle oil. Beogram is back together and running well. I just hope it continues to do so this time.
    Posted to The Workbench (Forum) by scorron on Mon, Sep 9 2019
  • Re: Beogram 3000 motor

    Thank you for the advice, Martin. I will try again on the motor bearings. Regarding the speed selector lever, mine was bare copper, so I glued a piece of felt to it, then oiled the felt. Is this an acceptable solution in your opinion? Thanks, Sean
    Posted to The Workbench (Forum) by scorron on Fri, Sep 6 2019
  • Beogram 3000 motor

    I recently acquired a Beogram 3000 (type 5228, built in 1974) with a motor that barely turned. Using instructions from this forum, I disassembled, cleaned, reoiled and the motor turned normal speed. In fact, it seemed to work perfectly for a few weeks, and now it is having speed problems again. I've read just about everything posted on the subject online, on this forum and others. Has anybody solved the motor problems that plagued these turntables? I ordered a rebuilt SP12 (not cheap) and now
    Posted to The Workbench (Forum) by scorron on Thu, Sep 5 2019
  • Re: Beogram 3000 motor

    Thanks for the quick reply. I didn't have any handy way to pull vacuum, but I heated the bearings to several hundred degrees in synthetic 10w30 oil (I figured if it's good enough for my Volvo 240...), after I soaked them in acetone. I also degreased the felt and soaked in the same oil. I could rig something up to pull a vacuum, I suppose. I didn't go nuts on the switch contacts, but thank you, I had no idea they were platinum. Most switches I've seen of this type had a small silver
    Posted to The Workbench (Forum) by scorron on Thu, Sep 5 2019
  • Re: Beogram 3000 motor

    I'll give the food saver a try. What about Zoom Spout turbine oil? Do you think that is the right quality? I can't find specs on it. What if the bearing were treated like solid bronze? I was thinking of using a jewelers saw to cut an oil channel in the bearing, but that would be a last resort. Thanks again, Sean
    Posted to The Workbench (Forum) by scorron on Thu, Sep 5 2019
Page 1 of 1 (10 items) | More Search Options
Beoworld Security Certificate

SSL