Blue spot

Discussion in 'Brakes' started by baloo681, Nov 13, 2017.

Help Support VMAX Motorcycle Forum by donating:

Tags:
  1. Nov 13, 2017 #1

    baloo681

    baloo681

    baloo681

    Member

    Joined:
    Oct 15, 2017
    Messages:
    13
    Likes Received:
    0
    Location:
    leeds
    Hi got hold of some blue spots calipers. Do I really need to upgrade master cylinder.had conflicting advice
     
  2. Nov 13, 2017 #2

    Fire-medic

    Fire-medic

    Fire-medic

    Well-Known Member

    Joined:
    Mar 25, 2011
    Messages:
    8,661
    Likes Received:
    13
    Location:
    Miami Florida
    No your stocker is fine. Assuming you are referring to R1/R6 calipers.
     
  3. Nov 13, 2017 #3

    one2dmax

    one2dmax

    one2dmax

    Well-Known Member

    Joined:
    Apr 6, 2006
    Messages:
    14,600
    Likes Received:
    8
    Location:
    Derby Kansas
    The monoblock R1 calipers aren't much of an upgrade for the 93-07 forks (for which they are direct fit). They don't increase pad surface area and piston volume isn't much different either. The main advantage is the different pad type they typically come with. The downside is that the hose connection is 2" higher and 90 degrees rotated. The stock line length fits but bunches up so a -2" shorter line kit fits better. The gold versions are aluminum pistons with anti-stick coating and operation is a lot smoother with them.

    To get an upgrade I would suggest a consideration for the Sumitomo calipers (6 piston) though they aren't as "pretty".
     
  4. Nov 20, 2017 #4

    caseyjones955

    caseyjones955

    caseyjones955

    Well-Known Member

    Joined:
    Jun 11, 2015
    Messages:
    2,170
    Likes Received:
    1
    Location:
    Black Hills, South Dakota
    Seans 100% right IMHO, I got the R6 calipers for my Venture and briefly entertained putting them on the Vmax instead, but they just dont appear to offer much over the factory calipers after measuring pistons and figuring how much actual gain I would get over the stock calipers. The Venture really needed them, you guys should see the shitty brakes Yamaha put on the gen1 Ventures. They are linked and have two different size calipers. not ABS, just linked! LINKED!!! :ummm: Also the bikes not even 30 years old yet and I ALREADY HAVE TO REPLACE CALIPERS!!:clapping:

    I went to Brakecrafters and noticed they had no Vmax stuff on the website so I called Mark and he did have all the stuff on hand. It was at my house two days later, pretty nicely priced for non-Chinese parts too, in fact I'm pretty sure Mark wont sell Chinese stuff. The riding season is pretty much over so I'll do the work over the winter and we'll know after the first thaw how well the freshly remade cylinders and HHs stop the beast. My expectations are high, I have read that a healthy stock Vmax brake system works quite well when equipped with HH pads.
     
  5. Jan 27, 2018 #5

    Kopperhed

    Kopperhed

    Kopperhed

    Active Member

    Joined:
    Jul 27, 2008
    Messages:
    29
    Likes Received:
    0
    Location:
    Tornado Alley

    don't need to, works fine with stock master, will stop on a dime with good braided lines & good pads. the master swap to the 14mm smaller master is to give more lever travel & "feel"....... the stock 5/8" bore master pushes more fluid per whatever increment of travel, so less "feel", it grabs quick, does not require alot of effort.

    Another consideration when switching master cylinders is "how much other shit do I have to re-arrange to make this fit?" No other master cylinder will keep the mirror in the exact same spot, and it may not snug up to the switch housing as well.




    The R1/R6/FZ1 calipers are made from a solid block of metal, instead of 2 halves bolted together like the stock calipers, to reduce/eliminate flex, equalling more squeeze.




    Per some reading on R1/R6 forums, there are different advantages & disadvantages to the steel piston blue spots (R1/R6/FZ1) vs. the alloy piston gold spots (R1 SE?). In any case, either one is an improvement over the stock calipers.

    Need I say more ?
     

    Attached Files:

    Last edited: Jan 27, 2018
  6. Jan 27, 2018 #6

    MaxMidnight

    MaxMidnight

    MaxMidnight

    Well-Known Member

    Joined:
    Dec 1, 2007
    Messages:
    1,616
    Likes Received:
    2
    Location:
    Cumbria, England.
    To get the best out of blue spots you do, IMHO, need to change the master cylinder.

    This is due to how the lever ratio (how much an input force is amplified to provide a greater output force) changes depending on which m/c the calipers are paired with.

    The R1 has a 14mm dia. M/C which gives a lever ratio of 33.5 with the blue spots.
    This is slightly more than the Max set-up with the early @ 32.7 & later 32.8.

    Couple blue spots with the Max M/C the lever ratio drops to 26.0 which will give a more wooden or dead feel to the brakes and a result greater effort will be required.
    This is what I found when I fitted b-s's.
    Changing to a 14mm m/c transformed the brakes.

    Additionally I suspect that the blue spots are stiffer so more of the input pressure is transmitted to the pistons.
    I've not experimented with friction material so can't comment on what difference that will makes.
     
  7. Jan 27, 2018 #7

    Redbone

    Redbone

    Redbone

    Well-Known Member

    Joined:
    Jun 19, 2007
    Messages:
    9,518
    Likes Received:
    2
    Location:
    Brimley in Michigan's U.P.
    I've really like the 6 piston calipers I run on my '92's m/c. I have Sean's adapters, SS lines and run HH pads which results in a 2 fingered operation for all the braking and more that I need running sticky Shinko Verge radials (On 18" Carrozzeria wheels).
    I do run a 4 piston silver dot rear underslung on a 3" longer braced swingarm (Sean's) actuated by the stock rear m/c which has good enough feel and I have only ever locked it up under really hard braking or when I intentionally tried to lock to feel where the lockup point was.
     
  8. Nov 12, 2018 #8

    jdeitz1979

    jdeitz1979

    jdeitz1979

    Well-Known Member

    Joined:
    Apr 22, 2015
    Messages:
    791
    Likes Received:
    0
    Location:
    Auburn
    What’s the brake arm used in the blue rod mod for the rear?
     
  9. Nov 13, 2018 #9

    one2dmax

    one2dmax

    one2dmax

    Well-Known Member

    Joined:
    Apr 6, 2006
    Messages:
    14,600
    Likes Received:
    8
    Location:
    Derby Kansas
    It's a custom made part if you want to use a 4 piston setup. I usually keep these on hand for both top mount and bottom mount. Also for 280mm or 298mm rotors. It also includes the brake bar.
     

    Attached Files:

Share This Page

arrow_white