Frankenbrakes and brake improvement discussion

Discussion in 'Downhill & Freeride' started by Udi, Sep 2, 2015.

  1. mykel

    mykel Turbo Monkey

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    :stupid:

    I also have the Avid Pro bleed kit.
    I have used it for years with both DOT and Mineral oil with the original o-rings.
    No problems ( just jinxed myself didn't I :disgust:)

    Just remember to clean thoroughly after every use.
     

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  2. Udi

    Udi RM Chief Ornithologist: “I Brake for Birds”

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    I swap the o-rings when i bleed a brake with different fluids yeah, it only takes 10 seconds to swap one (only really need to do plunger) and o-rings are cheap.

    I've been using my kit for 4 years now so I'm not sure if it's changed, but select the most expensive option here ($30us), should be the right one. Don't get the cheap ones, the good one has 2-piece threaded fittings for the hose on both ends (alloy at syringe, stainless at tip) which is awesome. Little hint, I put a drop of blue loctite on the metal threads between the plunger handle and shaft to stop it coming loose in regular use (there's a metal insert in the handle too!).

    That's the mineral oil version, if you search you can usually find the DOT also, they just change all the o-rings I believe.

    For anyone wondering, Trickstuff use the same system and bleed attachments as Formula.
     
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  3. rideit

    rideit Bob the Builder

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    Do you nerds have a 'favorite' 180mm rotor these days? Curious what the current group think consensus is these days.
     
  4. johnbryanpeters

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  5. rideit

    rideit Bob the Builder

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    An ice tech coffee can?
     
  6. StiHacka

    StiHacka Compensating for something

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    I like the new SRAM rotors a lot.
     
  7. kidwoo

    kidwoo Celebrating No-Pants Day

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    I usually get the round ones. Definitely silver. You're gonna want that.
     
  8. rideit

    rideit Bob the Builder

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    I figured you for carbon.
     
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  9. Jm_

    Jm_ Turbo Monkey

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    I'm smitten for the ice-techs, they really do seem to give some significant resistance to fade/overheating. I think some of that technology is pushing the boundaries.
     
  10. toodles

    toodles Turbo Monkey

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  11. kidwoo

    kidwoo Celebrating No-Pants Day

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    Definitely silver. You're gonna want that.
     
  12. Nick

    Nick My name is Nick

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    Anyone know if there is anything special about Formula mineral oil, or if there are appropriate substitutes?
     
  13. Bike078

    Bike078 Monkey

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  14. kidwoo

    kidwoo Celebrating No-Pants Day

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    Maybe udi ran a taste test. The fact that I've been using them with shimano calipers with no ill effects makes me think you could conversely run shimano oil instead which thereby suggests they are interchangeable.

    #deepscience
     
  15. Nick

    Nick My name is Nick

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    Thanks.
    I've been holding off on trimming these brake lines until I can get the right threaded bleed nipple thingamajig. Figures I should have some fluid on hand too. Tons of shimano red stuff in the garage.
    Yesterday's ride was the first time I've felt critical of these Cura vs Saints. Not sure if the lever shape, or the throw/feel, or a combo. Or maybe I brake too much. Anyone's guess really ....
     
  16. kidwoo

    kidwoo Celebrating No-Pants Day

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    I don't like the levers either. I mostly don't like the fact that you can't adjust them close to the bar. I pulled they lever off the assembly and bent one set back in a vice which definitely made it better. But yeah....shimano levers.

    You can use an avid fitting I'm pretty sure. If you can't find those I have some extra formula ones I could mail you.
     
  17. Mo(n)arch

    Mo(n)arch Turbo Monkey

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  18. Nick

    Nick My name is Nick

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  19. mykel

    mykel Turbo Monkey

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    If one only considers the effect of the additional caliper area.

    In the real world, I will leave it to the real boffins.
     
  20. toodles

    toodles Turbo Monkey

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  21. Udi

    Udi RM Chief Ornithologist: “I Brake for Birds”

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    Does anyone have the MC piston diameter for the Cura and Cura4?

    Because the important thing is the ratio between master and slave, having over 9000mm pistons at the caliper means nothing if you also have over 9000mm at the lever.
     
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  22. kidwoo

    kidwoo Celebrating No-Pants Day

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  23. Dogboy

    Dogboy Turbo Monkey

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    Cura 4 has 18mm pistons. Allegedly...
     
  24. Nick

    Nick My name is Nick

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    yea, I read that someplace.

    @Udi ... is there a way to determine without disassembling the MC?
     
  25. Jm_

    Jm_ Turbo Monkey

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    Took them 3 years to develop those rotors? Just looks like shit stamped out of steel.
     
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  26. StiHacka

    StiHacka Compensating for something

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    It took a while to arrive at their desired riding condition 3.14159.....
     
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  27. kidwoo

    kidwoo Celebrating No-Pants Day

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    18mm is the slave piston.

    He's asking for the MC piston in the lever.

    I've got four of the things sitting at my house doing nothing. I'll pull one apart. It just hasn't been of burning urgency to me because I have good working brakes and don't really care where the leverage is of something I have no plans of using. But I'll do for you guys. Because you deserve it.




    in september
     
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  28. slimshady

    slimshady Turbo Monkey

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    They had to wait for the Avid memories to fade:



     
  29. toodles

    toodles Turbo Monkey

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  30. StiHacka

    StiHacka Compensating for something

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    Watch out. I've tried to order the $30 kit from that seller and he just sent me a picture of one of the lesser kits with a question "How about this one?".
     
  31. Nick

    Nick My name is Nick

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    Generic bleed kit in hand, I trimmed the lines and bled for the first time.
    Brakes perform better and FEEL better after the bleed. I think Formula overfill them from the factory. They're dialed now.
     
  32. Udi

    Udi RM Chief Ornithologist: “I Brake for Birds”

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    Sounds like the 100 lurkers who saw my link beat you to the punch.
    There's a bunch of other kits the same on alix if you search (I think EZ bleed), bit of a gamble but I find if there's high star ratings and some user reviews they're usually safe. Don't blame me if it sucks.
     
  33. Bike078

    Bike078 Monkey

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    The link I posted above in my question to you are EZ bleed and costs around $23 (PHP 1,200) but can be had for less from the same site. I might give it a try.
     
  34. Udi

    Udi RM Chief Ornithologist: “I Brake for Birds”

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    By all means - I just figured using alix was scary enough for most people, your site looked so dodgy that I closed it within seconds of clicking (and no pics loading, my adblocker seemed to disapprove).
     
  35. Bike078

    Bike078 Monkey

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    Hahaha. Everyone and their mother uses lazada in this country because they also have a cash on delivery option and a lot of people don't like using credit cards. Sorry if I gave you a scare.
     
  36. Sandwich

    Sandwich Pig my fish!
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  37. Happymtb.fr

    Happymtb.fr Monkey

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    Udi is having a hard time now since a guy rode down his local tracks on a BMX... :cray:

    Everything he knew about wheelsize, disc brakes, suspensions, geometries and so on is gone. :shout:
    Get well soon @Udi ! :wave:
     
  38. Electric_City

    Electric_City The orangutans are loose!

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    Ahhhh, the "Avid squeal". I was unaware that Avid made bmx rim brakes!

    I thought Avid/Sram patented that sound like Harley patented theirs?
     
  39. Udi

    Udi RM Chief Ornithologist: “I Brake for Birds”

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    @Sandwich don't get those, good thing you asked actually. They expand under lever pressure and quite hard to get a firm bleed (even though they claim they're stiffer, they're not). Just get any normal black hose - Formula, or any Avid/SRAM with the same fittings - most Juicy ones work.

    @Happymtb.fr It's my friend, he's (much) faster on a DH bike. ;)
     
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  40. Sandwich

    Sandwich Pig my fish!
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