Yamaha forks on a BMW F650GS Dakar

Discussion in 'Thumpers' started by skibum_1260, Oct 23, 2008.

  1. JDRadman

    JDRadman Moto Head

    Joined:
    Jun 22, 2006
    Oddometer:
    195
    Location:
    In the Heartland
    Important note to anyone wondering about the bearing discussion and the different sizes. The BMW can and does use the same size top and bottom bearing. They can do this because of the rather complex (read expensive) adjustment method. The Yamaha needs a larger bearing at the bottom so it slides over the stem and seats firmly on the bottom of the the stem on top of the bottom triple clamp. Then the smaller top bearing can fit tightly over the top of the stem. I don't believe there are any real "load" based reasons for the larger OD on the bottom bearing.

    Just a foot note to the discussion for those that haven't torn into their bike yet.

    Rad
  2. Aries71

    Aries71 Adventure seeker

    Joined:
    Dec 5, 2008
    Oddometer:
    29
    Location:
    Carrying Place, Ontario
    Hey guys, for those that have done this mod aka JDRadman and NOTMYBIKESMODELNAME, do you find your DAKAR side stand to be long enough? My bike was "blessed" with the lowered suspension :boid, so I need to get my side stand lenghtened, same with my center stand.

    Also if you have some measurements of a DAKAR side stand that would be great.

    Cheers
  3. JDLuke

    JDLuke Ravening for delight

    Joined:
    May 3, 2007
    Oddometer:
    8,644
    Location:
    New Jersey
    Oooh, that's a good point! I'll get to do some cutting and welding on the sidestand when I install my kit.
  4. notmybikemodelname

    notmybikemodelname KOTW is a myth!

    Joined:
    Mar 5, 2008
    Oddometer:
    7,274
    Location:
    I'm in jail Dad, and I like it here.............
    Mine started as a Dakar, so it's long enough....barely. At least that's what my wife tells me:huh I'm looking at aftermarket stands because the bike does lean a little too much and it has fallen over in some soft stuff. But I was on it and drunk, so that might explain it:freaky ................and I actually forgot to put the kickstand down.............did I mention I was drunk as well?
  5. tbarstow

    tbarstow Two-wheelin' Fool

    Joined:
    Jul 9, 2007
    Oddometer:
    3,530
    Location:
    Viva Lost Wages!
    Just keep leaning it against the fences we come across, like you did at the top of the Saddlback in the fog!
  6. notmybikemodelname

    notmybikemodelname KOTW is a myth!

    Joined:
    Mar 5, 2008
    Oddometer:
    7,274
    Location:
    I'm in jail Dad, and I like it here.............
    Ah yes, after the infamous 4pm Friday to 9am Saturday alcohol infested Two Mountain Full Moon Ride. That was a good time:clap .

    List of other things I leaned my bike against recently:

    2008 MErcedes BEnz 500 class
    Myriad rocks
    A portapotty
    Dirt
    Other motorcycles
    Gas pump

    The list goes on and if I also list the stuff I leaned it against while I was stopped, it gets much larger.
  7. WayneC

    WayneC Long timer

    Joined:
    Oct 3, 2008
    Oddometer:
    2,824
    Location:
    Sydney, Australia
    A 20 to 25mm plastic sidestand extender which enlarges the base of the stand works quite well & is replacable & easier than cutting & welding the stand

    Just remember to put it into gear when parking on a slope if you go down this path or the beast will take a small nap on the footpath as mine did one day
  8. JDLuke

    JDLuke Ravening for delight

    Joined:
    May 3, 2007
    Oddometer:
    8,644
    Location:
    New Jersey
    Easier, schmeazier. I'm gonna melt me some metal! :thumb
  9. Aries71

    Aries71 Adventure seeker

    Joined:
    Dec 5, 2008
    Oddometer:
    29
    Location:
    Carrying Place, Ontario
    Bump, just want to keep this one alive.

    How's everybody doing with their project?

    I'm at a stand still with mine, the fancy Applied Racing triple clamp that I had for my forks turned out to have hairline cracks in the lower and upper; good thing I noticed them before installing them, could have been interesting on the trails if they snapped on me!!!:huh So now I'm just waiting for a new set to come in, probably a week or so.

    JDLuke, did you extend your sidestand yet? if so how long did you make it?

    Cheers
  10. JDLuke

    JDLuke Ravening for delight

    Joined:
    May 3, 2007
    Oddometer:
    8,644
    Location:
    New Jersey
    I'm working *slowly* on this one. I found myself in a funding crisis this Winter, so all I have coming for now is the axle and bracket, which I figure was a special, one-time deal. I'm now waiting on the shipment. All the other bits and pieces I'm putting off for another couple of months. Stupid orthodontics.

    So my bike is still stock in terms of suspension and side-stand, and will remain so for months to come. It is possible that I will not do the actual build until next Winter, since I commute on the bike daily.
  11. farkleface

    farkleface ridin dirty

    Joined:
    Nov 6, 2008
    Oddometer:
    122
    Location:
    seattle
    I Received the hanger, axle and brakeline from JDRadman and they are fantastic. He did a great job of designing and fabricating this stuff. I have also been annoying him over the phone with a zillion questions and he never even hangs up on me.
    This is what I have done so far:
    • electrical is done. converted ignition to toggle switch, new headlight because rock did the other one in, new sealed battery so the bike will start, fixed heated grips -now that it is not cold anymore.
    • mounted triples and found out my ebay friend sent me junk bearings, so I am waiting on a new set.
    • front fender is almost installed.
    • wheels went to woodys for a little winter vacation and they are sweet.
    • needed new sprockets and chain
    • still waiting on the forks that were sent out to get seals, progressive springs and shortend 1" (maybe now I have time to paint the body panels?? getting sick of the white) any ideas where to get new dakar decals?
    still need to switch the brake cable, mount the forks when they show up and go for a ride!
    someday I hope to post some pictures
  12. JDLuke

    JDLuke Ravening for delight

    Joined:
    May 3, 2007
    Oddometer:
    8,644
    Location:
    New Jersey
    My axle and caliper bracket arrived today. They are beautiful and I am in love with them.
  13. tmotten

    tmotten Lefthand ride Dutchy

    Joined:
    Jun 28, 2006
    Oddometer:
    2,502
    Location:
    Calgary
    Have I missed seeing a photo of these?

    :lurk
  14. JDLuke

    JDLuke Ravening for delight

    Joined:
    May 3, 2007
    Oddometer:
    8,644
    Location:
    New Jersey
    I can put up a photo of the parts tomorrow afternoon.:thumb
  15. Aries71

    Aries71 Adventure seeker

    Joined:
    Dec 5, 2008
    Oddometer:
    29
    Location:
    Carrying Place, Ontario
    How much were they if I may ask? I haven't heard from JDRadman so i'm thinking I missed out on the deal, PM'd him a couple times but no luck.

    Can you post some pics?


    Cheers
  16. JDLuke

    JDLuke Ravening for delight

    Joined:
    May 3, 2007
    Oddometer:
    8,644
    Location:
    New Jersey
    OK, fellas here we go:

    The axle and bracket are machined out of stainless steel. The axle cleverly adapts the larger diameter of the holes in the fork by having a thicker section at one end, and having the 'nut' at the other end serve the same purpose.

    Now the pictures:
    [​IMG]

    [​IMG]
    [​IMG][​IMG]
  17. JDLuke

    JDLuke Ravening for delight

    Joined:
    May 3, 2007
    Oddometer:
    8,644
    Location:
    New Jersey
  18. mattomoto

    mattomoto 2 wheels rule

    Joined:
    Apr 24, 2005
    Oddometer:
    1,129
    Location:
    In the shadow of Long's Peak, CO
    Those pics don't do the parts justice Luke! (jk- pics are great) I got mine yesterday- holy s**t that is some nice machining!!! :clap :clap

    I am taking photos as I install and will post them soon.

    You the man Jim. The parts are soooo nice. :freaky Thanks again!

    Matto
  19. JDLuke

    JDLuke Ravening for delight

    Joined:
    May 3, 2007
    Oddometer:
    8,644
    Location:
    New Jersey
    Hehe. You're right, they don't. I find myself just sort of... fondling them. :lol3
  20. farkleface

    farkleface ridin dirty

    Joined:
    Nov 6, 2008
    Oddometer:
    122
    Location:
    seattle
    I put mine on display above the freplace for everyone to enjoy. Even the wife likes em (kinda)