Bleeding hydraulic brakes after 1 year - worthwhile?

Discussion in 'Parts 'n Stuff' started by Binaural, Jan 3, 2018.

  1. Tubbsy

    Tubbsy Super Moderator

    I'll get around to it one day. Maybe trailside.
  2. @link1896 I've noticed that SRAM no longer even include the degassing step in their bleed procedures, do you notice much difference in the results when you vacuum bleed?
  3. link1896

    link1896 Eats Squid

    Yep, vac bleeding Guide RS or RSC , it makes a rear brake feel like a non vac bled front, eliminates a lot the sponginess. Makes a front lever feel rock hard and super responsive. The flip side to this, you're still left noticing the rear plastic lines swelling under pressure.

    I work with dot fluid, my whole fleet of bikes use guides so no way I can afford to jump ship, but I still hate dot fluid. It's horrendous crap.
  4. Yes, I had to replace a rear brake line just this week and despite a token effort couldn't find anyone selling braided lines for Guides, specifically S4 caliper but I don't think that there is a difference in the banjo anyway.
  5. Oddjob

    Oddjob Eats Squid

    Uberbike sell a universal kit but they only have a very limited stock of line colours.

    Goodridge kits are here

    Sent from my SM-G900I using Tapatalk
  6. wkkie

    wkkie Likes Bikes and Dirt

  7. Oddjob

    Oddjob Eats Squid

    Hmm. Maybe just google tweeks cycles goodridge.

    Sent from my SM-G900I using Tapatalk
  8. link1896

    link1896 Eats Squid

    URL works fine for me.

    Kit 111 is what you want for Guides I believe. I think I will be ordering some.
  9. Thanks, I did see those but as I'd had a nasty encounter with a stick and wanted to get the bike back up and running without delay I decided to stick with MTB direct, I'd just wrongly assumed that braided lines would be more commonly available.
    Let me know how the upgrade goes Link, I'd be interested in your thoughts.
    Last edited: Jan 14, 2018
  10. urallwrong

    urallwrong Likes Dirt

    Here's someone that thought the 1 year mark was a good bleed interval...
    1 Year Mark.JPG
    My crappy phone camera can't do it justice.
  11. stirk

    stirk Wheel size expert

    Looks like coffee! I'll be doing a pair that are 26 months old....... So will post a pick IMG_20180203_171911.jpg
    Last edited: Feb 3, 2018
  12. wkkie

    wkkie Likes Bikes and Dirt

    I'm going to do a full flush of a mates m800 Saint brakes that I used to own. They haven't had a full bleed for almost 10 years. They haven't had a super hard life, but should still be interesting to see the soup the comes out. Hopefully I'll remember to take some photos!
  13. Fruitbat

    Fruitbat Likes Dirt

    Damn... until I saw these pics I was happy with a "if its working don't mess with it" approach. Looks like I will be dropping into Supercheap on the way home for some DOT fluid...
  14. So I realise that DOT fluid is the devil and will eat through paint like a rabid teenager with the munchies would through your pantry, but what about the Avid/SRAM DOT compatible grease... is it corrosive as well?
  15. urallwrong

    urallwrong Likes Dirt

    No. The specificity is more about its interaction with DOT compatible rubber bits.
  16. Flow-Rider

    Flow-Rider Eats Squid

    If you've ever ridden through water on a hot day with glycol based Dot fluid, it will be totally fucked.
  17. Mr Crudley

    Mr Crudley Eats Squid

    This is a great thread folks. I'm contemplating a bit of brake maintenance finally.

    Is there any magical special sauce added to the Avid Dot 5 fluid or any old Dot 5 from the local auto emporium will do fine?

    Sent from my F5121 using Tapatalk
  18. Flow-Rider

    Flow-Rider Eats Squid

    I don't think avid run Dot 5, Dot 5 is silicone based. You can use Dot 4 and Dot 5.1, auto stuff is no different from the gen Avid stuff.
  19. link1896

    link1896 Eats Squid

    Not so sure about SRAM's dot compatible grease, request a MSDS if you want to see what's it's ingredients are, but the Castrol Red Rubber grease, which is used for every brake rebuild in the world thats automotive, is not at all corrosive, it's highly refined mineral oil derived.
  20. Flow-Rider

    Flow-Rider Eats Squid

    *(petroleum jelly) / vasolene, without the red dye.

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