Promax Hornets Bleed Kit

dmorton
dmorton Posts: 244
edited October 2012 in MTB workshop & tech
I have a set of Promax Hornet brakes on one of my bikes.

They share the same pads as Avid Juicy's..... just a thought, is it possible that the Avid bleed kit will work with the Promax's too?

Comments

  • dmorton
    dmorton Posts: 244
    just add a bit more:

    Avid Bleed Kits come with DOT 5.1 (I already have one of these and Avid brakes on other bikes)

    Seems Promax brakes need DOT 4....
  • nicklouse
    nicklouse Posts: 50,675
    link to brakes?

    fluid makes no difference.

    other than Dot5 and mineral.
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  • dmorton
    dmorton Posts: 244
    http://www.leechi.com.tw/index.php?language=en&mod=2 HORNET (DSK-907)

    DOT is temperature rating right?
  • nicklouse
    nicklouse Posts: 50,675
    dmorton wrote:

    DOT is temperature rating right?
    what do you mean?

    re the brakes the answer is no as the Hornets have two different threads while the avids use the same thead.

    see the topic in the FAQs about making your own bleed kit
    along with this

    http://www.google.co.uk/url?sa=t&rct=j& ... 8Q&cad=rja
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
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  • dmorton
    dmorton Posts: 244
    nicklouse wrote:
    dmorton wrote:

    DOT is temperature rating right?
    what do you mean?

    DOT relates to the brake fluid boiling point. Seems DOT 3, 4 and 5.1 are compatible with each other. DOT 5 isn't. http://www.opieoils.co.uk/pdfs/tech-articles/Brake-Fluid-Explained.pdf

    Cheers for the info, I'll look into making my own kit
  • lpretro1
    lpretro1 Posts: 237
    DOT refers simply to 'Department of Transport' - the application originally being for cars. DOT 4 and DOT 5.1 can be mixed - boiling point is different so mixing them reduces the boiling point towards the lower performance of the DOT 4.
    DOT and Mineral fluids CANNOT be mixed. DOT 4 & 5.1 are a synthetic poly alkalene glycol ester material. DOT 5 is silicone based so quite different and cannot be used. DOT 4 can readily be bought cheaply from automotive stores. DOT 5.1 you'll probably need to get from a cycle store so is more expensive.
  • mrmonkfinger
    mrmonkfinger Posts: 1,452
    lpretro1 wrote:
    DOT 4 and DOT 5.1 can be mixed - boiling point is different so mixing them reduces the boiling point towards the lower performance of the DOT 4.

    IIRC, DOT4 does not absorb water so easily as DOT5.1, so more suited to day-to-day applications.
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  • The Rookie
    The Rookie Posts: 27,812
    Except as bikes run sealed systems water absorbtion is a none issue......

    OK they are MEANT to run sealed systems, if it leaks then it's not!
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • bennett_346
    bennett_346 Posts: 5,029
    The Beginner wrote:
    Except as bikes run sealed systems water absorbtion is a none issue......
    Its when its in the tub that it absorbs the water.
  • dmorton
    dmorton Posts: 244
    Looks like all I'd need to do the Promax's then is a pair of nipples.....

    Got the syringes, hoses and fluid

    Anyone know where I can get nipples with the correct threads?
  • The Rookie
    The Rookie Posts: 27,812
    bennett_346 wrote:
    The Beginner wrote:
    Except as bikes run sealed systems water absorbtion is a none issue......
    Its when its in the tub that it absorbs the water.
    Only if your pot leaks, again if it doesn't NONE issue!
    Currently riding a Whyte T130C, X0 drivetrain, Magura Trail brakes converted to mixed wheel size (homebuilt wheels) with 140mm Fox 34 Rhythm and RP23 suspension. 12.2Kg.
  • bennett_346
    bennett_346 Posts: 5,029
    The Beginner wrote:
    bennett_346 wrote:
    The Beginner wrote:
    Except as bikes run sealed systems water absorbtion is a none issue......
    Its when its in the tub that it absorbs the water.
    Only if your pot leaks, again if it doesn't NONE issue!
    Which most do, plus once you've opened it it's exposed to moisture rich air permanently.
  • dmorton
    dmorton Posts: 244
    The Beginner wrote:
    Except as bikes run sealed systems water absorbtion is a none issue......

    In theory that's true but nothing is ever 100% water tight. For this very reason brake fluid in cars is advised to be changed every 2 years, regardless of mileage covered. The brake fluid will absorb moisture over time.

    Any thoughts on nipples?
  • nicklouse
    nicklouse Posts: 50,675
    dmorton wrote:
    The Beginner wrote:
    Except as bikes run sealed systems water absorbtion is a none issue......

    In theory that's true but nothing is ever 100% water tight. For this very reason brake fluid in cars is advised to be changed every 2 years, regardless of mileage covered. The brake fluid will absorb moisture over time.

    Any thoughts on nipples?
    but car systems are not closed.
    "Do not follow where the path may lead, Go instead where there is no path, and Leave a Trail."
    Parktools :?:SheldonBrown
  • dmorton
    dmorton Posts: 244
    nicklouse wrote:
    but car systems are not closed.

    Because they have a fluid reservoir?

    Don't some MTB brakes work in this way too?

    Still if the bike brake fluid is sat in a tub with a closed lid in your shed that's similar to it being sat in you car's brake fluid reservoir, i.e. a tub with a lid?

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