An Unholy Union V: DRZ forks on an Airhead

Discussion in 'Airheads' started by Ras Thurlo, Jun 28, 2014.

  1. hunterkey

    hunterkey Been here awhile

    Joined:
    Sep 22, 2013
    Oddometer:
    167
    Location:
    Portland, OR
    oof! looking good! I have an extra r100r front wheel, so I may have to steal your idea. I'd love dual disc up front on my pd.
    The Patagonia Kid likes this.
  2. The Patagonia Kid

    The Patagonia Kid gnarly adventurer

    Joined:
    Feb 6, 2007
    Oddometer:
    725
    Location:
    SOUTHERN CALIFORNIA, Thousand Oaks.
    Go for it!
    For the GSPD ... have you tried the 18" with stock forks ?
    Do you have the stock caliper or a 4 piston Brembo like attached picture?
    To make the 18" wheel work you need to make an spacer to compensate and align caliper / rotor. :-)

    BB 1.JPG
    jjwithers likes this.
  3. The Patagonia Kid

    The Patagonia Kid gnarly adventurer

    Joined:
    Feb 6, 2007
    Oddometer:
    725
    Location:
    SOUTHERN CALIFORNIA, Thousand Oaks.
    Will send you a PM with answer.
    jjwithers likes this.
  4. hunterkey

    hunterkey Been here awhile

    Joined:
    Sep 22, 2013
    Oddometer:
    167
    Location:
    Portland, OR
    I haven't! But I do love having a 21 up front. I already have the 4 piston brembo, but it's been milled to work with the single disc. I have a second one of those too.... I also have a complete r100r front end with two 4 piston brembo's, so I gotta figure out what works ha
    The Patagonia Kid likes this.
  5. The Patagonia Kid

    The Patagonia Kid gnarly adventurer

    Joined:
    Feb 6, 2007
    Oddometer:
    725
    Location:
    SOUTHERN CALIFORNIA, Thousand Oaks.
    Another run today to Scotts in Montrose ...
    Had to change the flat plate and get a stepped down 5 mm, that way seems everything is going to work out. Last item is the big chromed dust cover washer that needs to be worked on the lathe to remove material and make it fit.
    Pictures with the regular bearing dust cover.
    :-)
    Steering stabilizer bracket 13.jpg Steering stabilizer bracket 14.jpg Steering stabilizer bracket 15.jpg Steering stabilizer bracket 21.jpg
  6. Motopsychoman

    Motopsychoman Not a total poseur Supporter

    Joined:
    Jun 2, 2013
    Oddometer:
    5,563
    Location:
    Oaklandish
    This is great. If I decide to take the damper plunge you'll have already worked out and documented all the issues! Thx.
    The Patagonia Kid likes this.
  7. The Patagonia Kid

    The Patagonia Kid gnarly adventurer

    Joined:
    Feb 6, 2007
    Oddometer:
    725
    Location:
    SOUTHERN CALIFORNIA, Thousand Oaks.
    Hope it helps!
    :-)
  8. The Patagonia Kid

    The Patagonia Kid gnarly adventurer

    Joined:
    Feb 6, 2007
    Oddometer:
    725
    Location:
    SOUTHERN CALIFORNIA, Thousand Oaks.
    Today was a very productive day. The goals were many ...
    Of course, I needed the collaboration of my longtime friend (genius) Jeff E; he knows how relentless I can be and every time I show up to request his help (welding and just about anything), we are up to some kind of challenge! Many thanks for helping me and putting up with my craziness.
    Dust cover washer / ring needed to be worked on the lathe to remove 9 mm of the side wall.
    Dashboard stainless steel key holders needed welding to the plates.
    Bolts for the handle bar risers / clamps needed more thread to fit the way I wanted them to. Bar riser supplier original size, 10 mm 1.5 thread 100 mm long. I wanted more thread and less length then I will cut them at 80 mm long.
    All done
    Suspension steering system already completed to be swapped onto the GS soon; should go on without that many glitches.
    Next will be calculating the length to have the brake lines made.:y0!


    Steering stabilizer bracket 23.jpg Steering stabilizer bracket 25.jpg Steering stabilizer bracket 27.jpg Steering stabilizer bracket 28.jpg
    photorider likes this.
  9. Crazybrian

    Crazybrian Resident Moose

    Joined:
    Apr 24, 2008
    Oddometer:
    660
    Location:
    South Jersey Sands
    Which stabilizer clamp is that from?
    The Patagonia Kid likes this.
  10. The Patagonia Kid

    The Patagonia Kid gnarly adventurer

    Joined:
    Feb 6, 2007
    Oddometer:
    725
    Location:
    SOUTHERN CALIFORNIA, Thousand Oaks.
    I made it up using what I believe was a Yamaha YZ clamp that a friend gave me.. have a look at page 82. :-)
  11. The Patagonia Kid

    The Patagonia Kid gnarly adventurer

    Joined:
    Feb 6, 2007
    Oddometer:
    725
    Location:
    SOUTHERN CALIFORNIA, Thousand Oaks.
    This is what I did. Chopped the tube holder part for the pin and modified the ring, also used a lathe to get the precise ID. Hope it helps. :-)
    Steering stabilizer bracket 29.jpg Steering stabilizer bracket 30.jpg
  12. The Patagonia Kid

    The Patagonia Kid gnarly adventurer

    Joined:
    Feb 6, 2007
    Oddometer:
    725
    Location:
    SOUTHERN CALIFORNIA, Thousand Oaks.
    Here we go again ... finally today put together the front end to test components.
    The way I thought it out / designed is to be somewhat easy to decide on different set ups. One caliper brake system (right or left side) or double rotors. For that particular reason also chose 2 independent / individual brake lines; worse case scenario carrying a short banjo bolt for the master either side caliper can be removed.
    In this picture assembled with the 18" wheel, 19" and 21" also possible.
    Also this time I chose a different brake line vendor, competitive pricing even with the shipping from England. Lines have the fittings separated and you just put them together.
    Hope next time I post pictures is already on the GS ... that will probably be an entire work day. :dirtdog

    Double rotor set up 6.jpg Double rotor set up 11.jpg Double rotor set up 12.jpg Double rotor set up 13.jpg
    RJB (holland) likes this.
  13. Motopsychoman

    Motopsychoman Not a total poseur Supporter

    Joined:
    Jun 2, 2013
    Oddometer:
    5,563
    Location:
    Oaklandish
    Next time https://www.venhillusa.com/
    They're in Texas. The same outstanding stuff. I've been ordering custom brake lines from them for about 10 years now. I typically get parts in 3 days from placing the order.
    Also, their black banjos and bolts will rust. Wax them after you get it all assembled.
    The Patagonia Kid likes this.
  14. dino2000

    dino2000 No Bad Daze

    Joined:
    Dec 18, 2003
    Oddometer:
    1,462
    Location:
    Sacramento,Ca.
    Does anyone have a STOCK top triple for an R100gs?
  15. kdstalker

    kdstalker Been here awhile

    Joined:
    Oct 20, 2014
    Oddometer:
    204
    Location:
    France
    "R100gs STOCK top triple" ? Are you referring to this museum piece!? We all joined the Holland sect community :ricky
  16. dino2000

    dino2000 No Bad Daze

    Joined:
    Dec 18, 2003
    Oddometer:
    1,462
    Location:
    Sacramento,Ca.
    if there was supposed to be a pic there, yes, I need one. Was hoping to find one in the US.
  17. AntonLargiader

    AntonLargiader Long timer

    Joined:
    Aug 28, 2003
    Oddometer:
    6,714
    Location:
    Charlottesville, VA
    Assuming you mean for your '89, yes I have one. PM me. FWIW they are different from '91-on.
  18. dino2000

    dino2000 No Bad Daze

    Joined:
    Dec 18, 2003
    Oddometer:
    1,462
    Location:
    Sacramento,Ca.
    PM sent
  19. Motopsychoman

    Motopsychoman Not a total poseur Supporter

    Joined:
    Jun 2, 2013
    Oddometer:
    5,563
    Location:
    Oaklandish
    Prutser, all of your earlier fine photos and mechanical drawings seem to have gone away and now all that appears is this
    [​IMG]
    Did the site who was hosting your earlier drawings drop you? I was hunting for the Brembo caliper hanger drawing.

    Be well and stay healthy!
  20. Motopsychoman

    Motopsychoman Not a total poseur Supporter

    Joined:
    Jun 2, 2013
    Oddometer:
    5,563
    Location:
    Oaklandish
    FWIW, this inexpensive 320mm DRZ/RM rotor fits and seems to work quite well. It also is quiet with Brembo HH pads.

    IMG_20200804_130006703.jpg

    Not bad for $99 USD from eBay.
    The Patagonia Kid likes this.