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Softening old rubber parts

Discussion in 'Australia' started by Beet, Sep 23, 2020.

  1. Beet

    Beet adventurer

    Joined:
    Nov 26, 2005
    Oddometer:
    3,330
    Location:
    VIC. AUSTRALIA
    Ideas - softening old rubber parts like carby to air box etc. The ones that once where soft but now with age are not so. Thanks in advance
    #1
  2. Brute

    Brute Melbourne , outer east .

    Joined:
    Dec 6, 2007
    Oddometer:
    1,682
    I`ve heard if you soak it in CRC in a zip lock plastic bag and leave it for a month or so it becomes all nice and supple again .
    #2
  3. jimroid

    jimroid Long timer

    Joined:
    May 14, 2013
    Oddometer:
    1,201
    Location:
    Pisgah Forest,N.C./USA
    I have soaked rubber parts in Armor All. Worked decent.
    #3
  4. ozcruiser

    ozcruiser Been here awhile

    Joined:
    Aug 9, 2017
    Oddometer:
    987
    Location:
    Coffs Harbour
    I read brake fluid works at softening rubber but never tried It out.
    #4
  5. Packo

    Packo Packo

    Joined:
    Jul 27, 2015
    Oddometer:
    36
    Location:
    Adelaide, SA. Australia
  6. mickd

    mickd crash test dummie

    Joined:
    Apr 10, 2007
    Oddometer:
    2,505
    Location:
    sunshine coast,australia
    if you only want it soft just long enough to say put it on a carbie,heat it up with a heat gun or put it in hot water, but for long time :hmmmmm
    #6
    Spanky McKanky likes this.
  7. neppi

    neppi Long timer

    Joined:
    Mar 9, 2017
    Oddometer:
    1,140
    Location:
    Tauranga, New Zealand
    Wintergreen Oil! They’ll be like new!
    #7
    shinyribs, buckscreek and RowBust like this.
  8. GTinAus

    GTinAus nutsplitter

    Joined:
    Jan 17, 2006
    Oddometer:
    1,568
    Location:
    Uralla
    +1 on Wintergreen oil (methyl salicylate). Just have to put up with the smell, it is the major smelly ingredient in Deep Heat rub.

    We used to wipe it on our tyres at hillclimbs and sprints to increase traction (till they banned it).
    #8
    shinyribs likes this.
  9. neppi

    neppi Long timer

    Joined:
    Mar 9, 2017
    Oddometer:
    1,140
    Location:
    Tauranga, New Zealand
    The problem with Wintergreen oil here downunder is the price. In The States you can buy it for like dime a gallon; down here you’ll buy it in those ridiculous 2ml essential oil bottles for $17 (numbers from the top of my dome).

    I once found it online (still in NZ) in a bigger bottle, but it was like $75 for, dunno, 1/2 liter or so.
    #9
  10. GodSilla

    GodSilla I did that.

    Joined:
    Sep 21, 2006
    Oddometer:
    12,960
    Location:
    GodSowncountry Australia
    Armor-All, apparently. A good soaking.
    #10
    wombbatt likes this.
  11. K88

    K88 Adventurer

    Joined:
    Mar 14, 2008
    Oddometer:
    46
    Location:
    Melbourne, Australia
    Methyl salicylate is $5.69 for 100ml at Chemist Warehouse.
    #11
    richo360 likes this.
  12. Happy Snapper

    Happy Snapper GOMOB.

    Joined:
    Feb 14, 2009
    Oddometer:
    4,068
    Location:
    Brisbane, almost heaven!
    Used it on slot car tyres in the 60s
    #12
  13. KLEaner

    KLEaner Been here awhile

    Joined:
    May 15, 2006
    Oddometer:
    641
    Location:
    Western, NSW, AU
    Lather in vaseline and seal in ziplock bag for a week or so... seems to work for most rubbery stuff...
    #13
  14. shinyribs

    shinyribs Thumpers for life

    Joined:
    Sep 24, 2011
    Oddometer:
    6,215
    Location:
    The South
    Another vote for wintergreen oil. I've used in on old CB 750 carb boots that were so hard I couldn't seat the carbs in.

    You only need an ounce or two in a gallon of water. Then you boil your parts in the mixture.

    I sold that bike, but after 3 years and 40k miles the boots were still soft, so it's a lasting result.

    Don't boil it indoors though. The smell is very overpowering. It's hang around for months.
    #14
  15. Guano11

    Guano11 Stop me if you've heard this one....

    Joined:
    Mar 26, 2007
    Oddometer:
    1,954
    Location:
    Pacific NW
    [​IMG]
    #15
  16. GordyOZ

    GordyOZ Been here awhile

    Joined:
    Feb 10, 2013
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    786
    Location:
    Submarine Town
    #16
    OldDog likes this.
  17. crash n bern

    crash n bern Long timer

    Joined:
    Mar 5, 2007
    Oddometer:
    1,844
    Location:
    Brisbane Oztrailia
    I had some tyres from an old Meccano set that were crumbling. I soaked them in brake fluid and most of them came good. A couple were beyond saving. I heard that putting them in the dishwasher with one of those power bombs works too.
    #17