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  1. #1
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    ? about bleeding vs burping

    when would i do one vs the other, or does burping work fine most of the time

    so this...How to burp disc brakes - YouTube

    vs this..AVID Bleed Procedure - YouTube
    2010 GT Avalanche Expert

  2. #2
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    I'm not really sure what the deal with that "burping" junk is. If there is air in the system that is close enough to the lever to bubble out of the master cylinder it will do it automatically during operation. There's no need to open the reservoir to do that. There's also no need to open it like they did to even bleed those brakes. The large screw is the bleed port and that's the only one you need to use.

    You can't even do this with new Avid brakes because they don't have traditional open top reservoirs with timing port designs. They use a reservoir in a diaphragm, with a tapered cylinder bore so that the master cylinder bore is larger than the piston's seal at the beginning of the stroke, to take the place of the timing port.

    Just bleed the usual way for your brake system.

  3. #3
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    ok, thanks
    2010 GT Avalanche Expert

  4. #4
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    quick Q

    so my brakes need a bleed, 6 weeks old and getting a bit soft, is there a good bleed instruction set somewhere that's proven? unlike a car i cant see a reservoir to bleed the traditional way so do you bleed back to front? force fluid in from caliper through to lever end?

  5. #5
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    What kind of brakes do you have? Different brakes have different procedures.

  6. #6
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    Quote Originally Posted by Cotharyus View Post
    What kind of brakes do you have? Different brakes have different procedures.
    mine are tectro HDC 300's. only had the bike a few weeks so i reckona bleed is needed as they've gone soft...

  7. #7
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    I'm not sure why you would need to bleed them in just 6 weeks, but that's what it sounds like you need.
    A bad day of cycling is better than a good day at work

    Work Truck - Dassault Falcon 7X

  8. #8
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    Quote Originally Posted by Cleared2land View Post
    I'm not sure why you would need to bleed them in just 6 weeks, but that's what it sounds like you need.
    i'm assuming that the air is from the initial build and its settled to find a spot within the system where its causing the sponginess or something similar....?

    i'll get a kit and bleed em, looks like they're not massively expensive.

  9. #9
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    They're Tektro brakes. If you're going to ride bikes with hydro brakes, get a bleed kit and learn how to use it. Ultimately, I think you'll find the Tektro brakes a bit less than desirable. They may be a good candidate for upgrading.

  10. #10
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    yeah.. first bike with hydro and for the first few trips i was thinking "wow" and soon started to think "this back brake creeps when i stop on hills......"

    i'll bleed and get some decent pads in them, then most likely upgrade at some point!

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