Dot Brake Fluid

Discussion in 'Observed Trials Discussion' started by BrettM, Jan 20, 2004.

  1. BrettM

    BrettM New Member

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    Ok so I got the new Avid Juicy Sevens for front and rear. I'll do some reviewing of those when I get the time. Both of them need the lines cut down and thus re-bled. I have the choice between two different numers of dot (I forget the numbers.) Would one be at all stiffer or thinner or better feeling or anything over the other?

    If I were to guess it was 4.1 and 5 maybe? I've never delt with dot fluid before.
     
  2. AndyT

    AndyT New Member

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    I'd run the 4.1...


    At least thats what me other DOT brakes liked.


    I think.



    Maybe it was dot 3, if there is such a thing...


    ok I'm no help, sorry.
     

  3. Pancho

    Pancho New Member

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    I have no idea how those particuar brakes work, but with both Magura HS33s and Hayes discs (the two hydraulic systems I have experience with) just because you cut the line doesn't necessarily mean you have to re-bleed. If done carefully you can just cut them and re-attach them. You can also catch the fluid in the line that you cut, and drop a little bit into the caliper if needed to keep air bubbles to a minimum. Then again I am the worst mechanic in Colorado, and I always have brake problems, so just ignore me...
     
  4. AndyT

    AndyT New Member

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    aaaaaahhahha pancho


    Maybe thats why your brakes never worked. :)
     
  5. BrettM

    BrettM New Member

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    Thats what I figured Pancho. My Louise and Martas were like that. I read some paper it came with on cutting them and it says they have to be re-bled tho. So I guess a bike store may get to touch my bike. I'm not impressed...
     
  6. Coramoor

    Coramoor New Member

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    Bleeding is so easy... If you have the tools of course. Doesn't avid sell a bleed kit?
    And the manual should state which fluid to use. If you have a choice between 4.1 and 5 choose 5 because it is more heat resistant.
     
  7. thetart20

    thetart20 TartyBikes

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    But more prone to ingress of water... and youre never gonna get heat in trials.

    4 gets my vote, thats what I usually use :Wavey:
     
  8. oicdn

    oicdn Look at my member...

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    Dot 3 exists..LOL, it's what most of today's cars use. I hope you're not putting DOT4 or 5 in your cars brake system, LOL. Brake fluid doesn't mix too well....
     
  9. BrettM

    BrettM New Member

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    I can't use dot 3. Only dot 4 or 5.1. Just wondering if there would be a different feel between 4 and 5.1.
     
  10. thetart20

    thetart20 TartyBikes

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    None whatsoever.
     
  11. Sethbomb

    Sethbomb New Member

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    I don't know about the euro fluid 5.1 (I've heard it's different than normal DOT5) , but DOT5 has silicon in it, and as far as vehicles go IT CAN NOT MIX! Your system takes DOT4 or DOT5, not either one.
    I don't know the "Juicy" system, but typically a system takes one or the other NOT EITHER. I do know that DOT 5 is nice to work with cause it doesn't eat paint like DOT4 does, but it's supposed to not be compatible with DOT 4 seals..............
     
  12. Fast Fashion

    Fast Fashion Youth in Asia?

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    i run DOT 4. you are a dumbass.
     
  13. Elan

    Elan steve french

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    jeeze... who cares? put the shit in your brake and ride it.. blah
     
  14. Pancho

    Pancho New Member

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    Hey, I'm team mechanic, sooo yea... take that...
     
  15. BrettM

    BrettM New Member

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    Im getting tired of saying this but my brake says I can use either 5.1 or 4. So for the couple people who keep telling me I can't well I can.

    Apparently theres no diff in feel tho. So my question is answered and thanks.
     
  16. WhiteRavenKS

    WhiteRavenKS Well-Known Member

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    you can use either 4 OR 5.1 just never ever both at the same time. if you ever were to switch, flush out the system really really well.
     
  17. Elan

    Elan steve french

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    like an enema
     
  18. ty

    ty shizzle dizzle

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    hahahahaahah
    good work elan
     
  19. Kartoffel

    Kartoffel New Member

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    Do not use DOT brake fluid in Magura rim brakes. It will ruin them.

    Plain mineral oil only.
     
  20. WhiteRavenKS

    WhiteRavenKS Well-Known Member

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    this is about avid juicy brakes not pooguras