R100GS Nissin 4-piston caliper conversion

Discussion in 'Airheads' started by Solo Lobo, Apr 7, 2005.

  1. HPMGuy

    HPMGuy Been here awhile

    Joined:
    Mar 17, 2006
    Oddometer:
    265
    Location:
    Mid-California
    I finished one piece last night and trial fit it on my bike. I should have the rest of them machined in the next day or two, then they will go out for black anodize. I have found the fasteners in zinc plating, and should see them here in a week. If all goes as expected, the adapters will be ready to ship within two weeks.


    Black anodized adapter, with all necessary hardware (zinc plated): $35 + $2.50 USPS Shipping = $37.50



    [​IMG]


    [​IMG]


    [​IMG]
  2. HPMGuy

    HPMGuy Been here awhile

    Joined:
    Mar 17, 2006
    Oddometer:
    265
    Location:
    Mid-California
    Thanks to Back of Beyond we know the piston diameters for the 4 pot calipers, but....

    Does anyone know the piston diameters for the 6 pot Tokico?

    I am trying to decide which will work best with my existing 13mm master.

    Thanks.
  3. Solo Lobo

    Solo Lobo airhead or nothing

    Joined:
    Mar 16, 2004
    Oddometer:
    9,514
    Location:
    Shoreline, WA
    Beautiful work !:thumb
  4. datchew

    datchew Don't buy from Brad

    Joined:
    Aug 1, 2005
    Oddometer:
    7,409
    Location:
    Remember the Alamo!

    Ah... thought he was talking of something else. On my GS, and on the fiche, it shows a runner part like this (similar to on your cars as I mentioned earlier) that connects at the front fender through the grommet and then is a steel line to the caliper.

    I'm interested to see if he has a special type of master cyliner. Otherwise, you can just run a brakeline as I described and use the banjo bolt to attach each end of it.
  5. datchew

    datchew Don't buy from Brad

    Joined:
    Aug 1, 2005
    Oddometer:
    7,409
    Location:
    Remember the Alamo!
    looks nice HPMguy!
  6. richarddacat

    richarddacat I can't be satisfied

    Joined:
    Nov 22, 2006
    Oddometer:
    3,955
    Location:
    Heart of Tennessee
    Without disassembly, it appears to me to be 27.0mm.

    Excellant work :thumb pm me when you're ready to ship and paypal will be on it's way.
  7. JoeK.

    JoeK. Adventurer

    Joined:
    Apr 15, 2005
    Oddometer:
    36
    Location:
    Cuomo's Fiefdom
    Looking thru my notes, the 6 piston Tokico I have stashed uses 27.05 mm pistons.

    :clap HPM, the adapter looks great, been waiting 3 years to have some one make them available. I might even finish the PD Classic this year at this rate.

    :clap Long over due to thanks to Solo since I pestered him for the drawing 3 years ago. Three friends, a toolroom supervisor, manufacturing tech and engineering aide all promised the adapter. Good thing I wasn't holding my breath

    Big Joe
  8. Solo Lobo

    Solo Lobo airhead or nothing

    Joined:
    Mar 16, 2004
    Oddometer:
    9,514
    Location:
    Shoreline, WA
    ......sure doesn't feel like three years...
  9. Stagehand

    Stagehand Imperfectionist

    Joined:
    Oct 6, 2004
    Oddometer:
    30,326
    Location:
    Shawangunks

    dood youre in my backyard :deal or I'm in yours :lol3

    <--rosendale
  10. Zebedee

    Zebedee Been here awhile

    Joined:
    Jan 3, 2004
    Oddometer:
    862
    Location:
    ... I was born a ramblin' man
    :tb

    Just let me know how much the shipping is to Aussie ...
  11. inxanadudidkublakhan

    inxanadudidkublakhan Adventurer

    Joined:
    Jun 26, 2007
    Oddometer:
    18
    Hi, Could you confirm that I'm on the list for two please.

    Thanks

    Rob
  12. no5s

    no5s Terror at 2 mph

    Joined:
    Oct 24, 2004
    Oddometer:
    364
    Location:
    Oceanside
    HPMGuy, looks great! Let us know when and how you want the funds.
    Thanks, Doug
  13. Stagehand

    Stagehand Imperfectionist

    Joined:
    Oct 6, 2004
    Oddometer:
    30,326
    Location:
    Shawangunks
    BMW FarkleWerks -- a division of HPM Industries :lol3
  14. bmwblake

    bmwblake upside down parker

    Joined:
    Mar 3, 2004
    Oddometer:
    3,274
    Location:
    nashville, tn
    my guy wasn't interested in a small run, at least not at a price that would beat HPMguy's deal.
  15. HPMGuy

    HPMGuy Been here awhile

    Joined:
    Mar 17, 2006
    Oddometer:
    265
    Location:
    Mid-California
    Thanks Big Joe and Richarddacat! It looks like the 6 piston is right in the range for a 13 mm master, with a ratio of 25.98:1 (Nissin 4 24.33:1, and Stock BMW 27.27:1)


    International first class: $6 ("Delivery varies"....I really don't know what that means, but it is airmail......not the slow boat.)

    Priority International: $21 (6-10 days)



    I have you on the list for two pieces, thanks.



    Payment can be by personal check, or paypal. (I don't take credit cards at this time.) I will let everyone know when they are ready to ship, payment can be sent at that time.




    I like it!!!!! :D
  16. soyanarchisto

    soyanarchisto Long timer

    Joined:
    Sep 1, 2005
    Oddometer:
    4,191
    Location:
    Sunny PDX
    Count me in for one too please.


    Where are you guys sourcing your calipers? I just looked on ebay and there was like one Tokico and two Nissins and none were less than $40. Not that I think thats outrageous but I am a cheap bastard (I ride a BMW afterall) and have a limited farkle budget.
  17. richarddacat

    richarddacat I can't be satisfied

    Joined:
    Nov 22, 2006
    Oddometer:
    3,955
    Location:
    Heart of Tennessee
    must have gotten in before the rush, got mine on eBay for .99 cents, shipped for 14.95. :trp
  18. Solo Lobo

    Solo Lobo airhead or nothing

    Joined:
    Mar 16, 2004
    Oddometer:
    9,514
    Location:
    Shoreline, WA
    just search for "caliper" or "brakes" in the japanese section... most sellers don't post nissin or tokico and post the bikes make/model...
  19. Renegade6

    Renegade6 Been here awhile

    Joined:
    Feb 23, 2004
    Oddometer:
    820
    Location:
    Ft. Riley, KS
    Sign me up for one as well.
  20. cgoodwin

    cgoodwin Adventurer

    Joined:
    Sep 17, 2006
    Oddometer:
    96
    I have a CNC mill waiting.....