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Thread: Uhhhh

  1. #1
    RC Racer
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    Uhhhh

    Yeah 8(
    Cleaning grease isnt easy without brake fluid

    That stuff is all rust


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  2. #2
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    Quote Originally Posted by LargeCar1999 View Post
    Yeah 8(
    Cleaning grease isnt easy without brake fluid

    That stuff is all rust


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    Now i have a trashed diff and no rear diff

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  3. #3
    RC Qualifier Calebs0615's Avatar
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    Wd40 will take that surface rust off.

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  4. #4
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    Quote Originally Posted by Calebs0615 View Post
    Wd40 will take that surface rust off.

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    Its a sad day because i dont have wd40

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  5. #5
    RC Qualifier GotNoRice's Avatar
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    I'm curious what you were doing that allowed so much water or moisture into the diff housing. I've never had rust in there, even when driving through shallow rivers and mud puddles.
    Last edited by GotNoRice; 09-07-2020 at 07:28 PM.

  6. #6
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    Quote Originally Posted by GotNoRice View Post
    I'm curious what you were doing that allowed so much water or moisture into the diff housing. I've never had rust in there, even when driving through a shallow rivers and mud puddles.
    Degreasing

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  7. #7
    RC Qualifier GotNoRice's Avatar
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    Quote Originally Posted by LargeCar1999 View Post
    Degreasing
    All that rust is just from trying to clean it?

    91% rubbing alcohol IMO. Gets rid of grease quick and then evaporates almost instantly.

  8. #8
    Marshal Double G's Avatar
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    Quote Originally Posted by GotNoRice View Post
    All that rust is just from trying to clean it?

    91% rubbing alcohol IMO. Gets rid of grease quick and then evaporates almost instantly.
    While I agree, around here any kind of rubbing alcohol is a hot commodity... I've always used paper shop towels to clean.
    The Super Derecho

  9. #9
    RC Qualifier Calebs0615's Avatar
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    Yep. Use wd40 and a tooth brush to aggitate. And wash it off with alcohol. Brandy new.

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  10. #10
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    Quote Originally Posted by Double G View Post
    While I agree, around here any kind of rubbing alcohol is a hot commodity... I've always used paper shop towels to clean.
    I do have alcohols

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  11. #11
    RC Qualifier Calebs0615's Avatar
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    Quote Originally Posted by LargeCar1999 View Post
    I do have alcohols

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    Do you have any dark soda or pop? Rootbeer Pepsi Coca Cola Dr Pepper may work.

    Soak just the part you want clean in a cup of dark soda. Im not sure what it'll do to bearings...

    Pepsi and Cola work the best in my opinion but i have used rootbeer and dr peper one time.

    Soak that park in soda for about a day or so. Pull it out. Scrub it clean with an old tooth brush or something with a decently stiff brissle.

    Clean it off with alcohol.

    WD40 instead of soda will probably work better. And much faster.

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  12. #12
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    Unless you have a rust-specific remover, the only good option you have with no side effects is white vinegar. Soak it in straight white vinegar. Let it sit for 30min or so. Then brush with brass brush (not steel and not steel wool).

    The secret to scrubbing off rust off of another metal is to scrub with something softer than the metal but harder than the softened rust layer. Since that is a steel gear, use brass or copper brushes - fairly common in most garages.

    I personally soften with vinegar then scrub with a special pad I use - Big 45 Frontier, but most people won't have that pad, although you can get it off amazon.

    Although you know it now, anytime you degrease a metal part, always make sure to protect it back again with oil or yes, it will rust especially fast.

    Water displacing oil, like Kroil or WD40, will keep it from rusting again but it is super thin and doesn't hang around long. Use a good quality oil for long term.
    Last edited by halygon; 09-08-2020 at 11:49 AM.

  13. #13
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    Oh and if you want a fun science experiment, boil the rusted parts (take the diff apart first), in distilled water for 15min, the rust will turn black. Then you can brush it off directly with a fine metal (brass or superfine steel) brush. This is called rust-bluing and actually if done over and over again, will build a rust-resistant layer of non-active oxidization on the part.

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