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Cleaning the Capstan Rubber Rollers

Discussion in 'Tape' started by Old_Tech, Feb 13, 2009.

  1. pustelniakr

    pustelniakr Silver Miner at Large Staff Member Super Mod Moderator Subscriber

    Messages:
    7,666
    Location:
    Tucson, AZ
    Not challenging your use of cleaning fluid, but 200 proof alcohol of any kind is a limit to be approached, but not economically achievable. Alcohol is too hydrophilic. Everclear is 190 proof where it may be sold at that concentration.

    Enjoy,
    Rich P
     

     

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  2. kfalls

    kfalls Super Member

    Messages:
    1,106
    Location:
    Dennison, Illinois
    +1 on the S-721H. We have 12 Studer A807 player in use for archiving. We don't use alcohol because we're concerned the operators will use it on the heads which can cause the adhesive to deteriorate. The stuff is expensive @ $60/qt, but it's all we use.
     
  3. JoeESP9

    JoeESP9 ESL's & tubes since 83

    Messages:
    16,628
    Location:
    Philadelphia PA
    Something I learned from an HP LaserJet tech is to use unscented dye free Dawn detergent to re-vitalize rubber. Apply liberally, let it soak in for a while and wipe of. It cleans and softens rubber. He used it on Laserjets for business and commercial use.
     
  4. JoeESP9

    JoeESP9 ESL's & tubes since 83

    Messages:
    16,628
    Location:
    Philadelphia PA
    An HP printer tech clued me in to what he uses to clean and re-vitalize the rubber feed rollers on commercial printers. It's fragrance and dye free Dawn detergent. Apply liberally and let sit for a few minutes before wiping off. I've tried it and it works quite well.
     
  5. Mark_71

    Mark_71 Member

    Messages:
    96
    Location:
    Bethesda, MD
    I used to use alcohol, but I do worry about that damaging the rubber, cause I know it can. Once I managed to screw up a Technics RS-B100 pinch roller w/ alcohol. It caused slipping. Then I tried some MG rubber renewer and that seemed to make things worse. Eventually used a Caig RBR, another rubber renewer, and with just two light applications - voila, worked like a charm. That's the only one I use now if I have a problem rubber part. Before that I just use some luke-warm water and a q-tip to remove dirt - seems harmless enough.
     
  6. vga911s

    vga911s Well-Known Member

    Messages:
    567
    Location:
    Calif.
    This has been covered pretty well so I will just add that using Naptha( old school wick lighter fluid) will bring old harden glazed, dirty rubber, back to life, removing the layer of dirt and hardened rubber. extending the time you have in between replacement .
    A word of caution; You will remove rubber using this chemical so be aware that the outside dia of the roller pinch roller will be decreased over time.
     
    Last edited: Mar 24, 2017

     

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  7. danj

    danj modern primitive

    Messages:
    5,176
    Location:
    Somewhere in Oregon
    I still have about 1/3 of a bottle of TEAC rubber cleaner/conditioner that I purchased in 1974. I use it sparingly when alcohol doesn't do it, knowing the TEAC stuff always will. It's main problem is its smell, which is AWFUL and should only be used with adequate ventilation. My bottle is so old that the original deep pink of the fluid is now almost brown (too much sun?)
     
  8. vendo81

    vendo81 AK Subscriber Subscriber

    Messages:
    1,844
    Location:
    California
    I also use the Teac cleaner/conditioner that came in the Teac kit. I bought the kit at least 25 years ago. Works well and it states that it doesn't contain alcohol. I don't notice a bad smell at all with it but another bottle I had did and I tossed it out 5 or so years back.

    Rubber cleaner.jpg
     
  9. rob Brandt

    rob Brandt Active Member

    Messages:
    205
    Without reading through all of this, do any of you use pure denatured alcohol on the heads and metal parts? I do. I then wash the rollers with Dawn dish soap to clean the rollers. That's all. works well for me.
     
  10. Zenith4me

    Zenith4me AK Subscriber Subscriber

    Messages:
    91
    Location:
    Near Seattle, WA
    I just tried some Caig RBR on my Marantz 5025B and it seems to work fine. The rubber looks like new.

    Carter
     
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  11. danj

    danj modern primitive

    Messages:
    5,176
    Location:
    Somewhere in Oregon
    The 1970s bottle even states on the rear label "Avoid fumes. Use only in a well ventilated area." As for the later formula, I don't know. The early stuff was a translucent pink but I've also seen it a translucent brown - the color of beef broth. I do recall that some time after I bought my bottle (1974, in the Navy Exchange at Subic Bay) that TEAC issued a warning and changed the formula. The pink stuff was harsh and could make one sick if not well ventilated. I always use it with windows opened and a fan blowing. The odor is like a combo of turpentine and gasoline.

    Despite having bought this at the Exchange in the Philippines, the label says USA. It's so old the pink color is long gone.
    IMG_2369.JPG
     
    Last edited: Aug 7, 2018

     

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  12. skywavebe

    skywavebe Tascam Repair

    Messages:
    131
    Location:
    Bensenville, IL
    Well as many opinions as 7 pages. Well I was working at Teac and we used Denatured alcohol as obtained at a hardware store all the time and it cuts through oxide much better than Iso does. The rubber cleaner we used extensively was found out to have color, mineral spirits in small quantities and then Naphtha at 97%. So I went out and got Naphtha at the Ace
    hardware and have been using it for years now. I work on decks 12-14 hours a day 7 day a week at my own business so I have good experience using these chemicals.
    The alcohol is used for cleaning while the Naphtha is used for reconditioning to take shine off and old rubber. The Naphtha is suppose to remove rubber so don't clean until the black is gone or you will be at the bearing. In bad rollers with nicks in it or cracks or hardness there is no other choice than to send the roller to Terry. He is no secret and does a fine job every time plus they are guaranteed for 10 years. I have had at least 100 rollers done by his service in Sparta MI.

    The Rubber cleaner was suppose to be blue and the pink was the head cleaner. The Rubber cleaner was made by a company called Rawn in Spooner, Wisconsin. The blue color is photoreactive and if left in the sun will turn a dark green. Color does not affect it's function.
     
    Last edited: Nov 18, 2018
  13. Wolfman181

    Wolfman181 Member

    Messages:
    92
    I am using good old professional studio grade Audio 456. Stuff does wonders for my cassette deck rubber parts and I am sure it will do as well for the RTR I just bought today. 2 oz bottle lasts for ever guys. Made for pinch roller cleaning and all kinds of stuff like belts, turntable parts and printer stuff. Anything rubber. I have heard of guys using it on car parts and belts too. I got it on Epray.
     

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