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  1. #1
    Join Date
    Aug 2002
    Location
    west coast of Scotland
    Posts
    1,900

    Default Stainless steel in aluminium

    My whisker poles piston hanks seize up in a matter of days if not used as the stainless steel binds to the aluminium casting on the ends...
    Iím getting fed up having to used a hammer and drift to remove and clean them and have tried greasing and oiling them to no avail.
    Is there some other gunk out there that will stop the sticking?

  2. #2
    Join Date
    Jun 2013
    Posts
    3,202

    Default Re: Stainless steel in aluminium

    Tefgel is supposed to be the best for this.
    If found in the Brexit forum, please return to the real world.

  3. #3
    Join Date
    Oct 2004
    Location
    Devon
    Posts
    2,202

    Default Re: Stainless steel in aluminium

    ACF-50 is great or corrosion block grease.
    quicKutter rope cutter, shaft and rudder bearings
    www.h4marine.com

  4. #4
    Join Date
    Jul 2002
    Location
    Home: Kent. Boat: Chichester
    Posts
    43,184

    Default Re: Stainless steel in aluminium

    Quote Originally Posted by wully1 View Post
    My whisker poles piston hanks seize up in a matter of days ........................
    Is there some other gunk out there that will stop the sticking?
    McLube Sailkote
    https://www.harken.co.uk/productcate...spx?taxid=4065

    but if you have not done so already try a PTFE spray from Toolstation
    https://www.toolstation.com/ptfe-spray/p63929

  5. #5
    Join Date
    Aug 2002
    Location
    west coast of Scotland
    Posts
    1,900

    Default Re: Stainless steel in aluminium

    Cheers all, I have some ACF 50 so will try that first.

  6. #6
    Join Date
    Apr 2009
    Posts
    5,468

    Default Re: Stainless steel in aluminium

    Quote Originally Posted by wully1 View Post
    I’m getting fed up having to used a hammer and drift to remove and clean them and have tried greasing and oiling them to no avail.
    Hopefully the other posts have given you a permanent solution. In the meantime, hot water is good at freeing up s/s and aluminuim bits corroded together. Just boil up kettle and pour the water over the offending item. Keep toes out of the way.

  7. #7
    Join Date
    Oct 2004
    Location
    Devon
    Posts
    2,202

    Default Re: Stainless steel in aluminium

    Another useful tip for stuck salty stuff like zips is to get some citric acid from a home brew shop. Make up a strong solution and it dissolves the salt and after a few applications the zip will work like new. It doesn't harm the fabric or the zip.
    quicKutter rope cutter, shaft and rudder bearings
    www.h4marine.com

  8. #8
    Join Date
    Nov 2011
    Posts
    46

    Default Re: Stainless steel in aluminium

    Duralac is worth consideration

  9. #9
    Join Date
    Jul 2018
    Location
    Bewdley, Worcs
    Posts
    343

    Default Re: Stainless steel in aluminium

    Quote Originally Posted by doraymefa View Post
    Duralac is worth consideration
    Hmm ... it is a thick sticky coating, I don't think it would work well in a sliding fit pin.

    Duralac is also one of the worst offenders for "yacht tax" ... a 25ml tube as typically sold in chandleries is about a tenner ...a 1 litre pot as typically sold to the trade is ... about £35

    https://www.silmid.com/sealants/join...pound-1lt-can/

  10. #10
    Join Date
    Aug 2002
    Location
    west coast of Scotland
    Posts
    1,900

    Default Re: Stainless steel in aluminium

    Quote Originally Posted by rszemeti View Post
    Hmm ... it is a thick sticky coating, I don't think it would work well in a sliding fit pin.

    Duralac is also one of the worst offenders for "yacht tax" ... a 25ml tube as typically sold in chandleries is about a tenner ...a 1 litre pot as typically sold to the trade is ... about £35

    https://www.silmid.com/sealants/join...pound-1lt-can/
    Ive tried Duralac... good for it’s intended purpose as a jointing compound but not so good for something that’s meant to move or come apart - in my experience.

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