The GO-SPORT adventure!

Discussion in 'Some Assembly Required' started by tobiism, May 26, 2016.

  1. tobiism

    tobiism Been here awhile

    Joined:
    Jun 28, 2011
    Oddometer:
    347
    Location:
    Chandler AZ
    Starting on adjustable height double shear lower shock mounts
    20181122_171256.jpg
    20181122_174801.jpg
    #61
    JagLite and villageidiot like this.
  2. tobiism

    tobiism Been here awhile

    Joined:
    Jun 28, 2011
    Oddometer:
    347
    Location:
    Chandler AZ
  3. k-moe

    k-moe Long timer

    Joined:
    Jun 27, 2012
    Oddometer:
    6,423
    Location:
    100ยบ W
    You're not just changing the height, you're changing the shock angle.
    Was any math done regarding the effective spring rate at each position?
    #63
  4. tobiism

    tobiism Been here awhile

    Joined:
    Jun 28, 2011
    Oddometer:
    347
    Location:
    Chandler AZ
    Nope, not even a little bit. I'm going with what looks good to my eye lol. I don't even have any idea if these Springs will work. I'm going to have the front and rear done by the local suspension guys when the bike is at full weight and ride height that works for me
    #64
    CopyCat and JagLite like this.
  5. villageidiot

    villageidiot Long timer Supporter

    Joined:
    Apr 29, 2010
    Oddometer:
    10,549
    Location:
    Orange County, CA
    I love the look of the multi hole lower shock mounts, but I would have done a couple things different

    -left more meat between holes
    -cut the seam of the tube out when I made the piece.
    #65
  6. tobiism

    tobiism Been here awhile

    Joined:
    Jun 28, 2011
    Oddometer:
    347
    Location:
    Chandler AZ
    All good points! I didn't even think about cutting out the seam! All I was concerned about was making sure it didn't interfere with the holes I was drilling. Sometimes that seam can make your drill bit wander when drilling through. Well it didn't take me that long to make maybe I'll make a second set.
    As far as the meat between the holes I thought about that but I didn't want the space between the adjustment holes to be too far. We will see how it holds up.
    #66
    smolt, JagLite and villageidiot like this.
  7. villageidiot

    villageidiot Long timer Supporter

    Joined:
    Apr 29, 2010
    Oddometer:
    10,549
    Location:
    Orange County, CA
    my general "rule" is to make sure the fasteners flat washer OD is on solid metal and not covering a hole. just something to think about.
    #67
    AK650, JagLite and tobiism like this.
  8. tobiism

    tobiism Been here awhile

    Joined:
    Jun 28, 2011
    Oddometer:
    347
    Location:
    Chandler AZ
  9. Scubawerx

    Scubawerx Scubawerx

    Joined:
    Dec 19, 2012
    Oddometer:
    657
    Location:
    North Georgia
    It keeps looking better.
    #69
    tobiism likes this.
  10. tobiism

    tobiism Been here awhile

    Joined:
    Jun 28, 2011
    Oddometer:
    347
    Location:
    Chandler AZ
    Well she has finally left the garage supporting her own weight. I decided to go with a single shock mount that is double shear. The shock mount will get boxed in a little more this is just preliminary stage. I will be removing the stock upper shock mount bolts and fabricating a double Shear top mount as well. Wheelbase is 64 in
    20181214_144906.jpg
    20181214_144839.jpg
    20181214_145348.jpg
    #70
    Pezz_gs, AK650, layzrider and 4 others like this.
  11. Luke

    Luke GPoET&P

    Joined:
    Aug 25, 2004
    Oddometer:
    4,973
    Location:
    Beaverton, OR
    Man, that sure looks good. Lean and mean.

    And you're going to love that long wheelbase when you hit a big hill. Up or down.
    #71
    madrider5150 and tobiism like this.
  12. joenuclear

    joenuclear Still here....

    Joined:
    Mar 16, 2007
    Oddometer:
    10,076
    Location:
    Fort Smith, Arkansas
    ^ BTT
    #72
  13. madrider5150

    madrider5150 Riding somewhere

    Joined:
    Oct 15, 2013
    Oddometer:
    1,025
    Location:
    PNW
    So Ive been seeing these double sheer mounts now on the baja sportsters biltwell and carducci- also the original SC3 has lower double sheer mounts. This kinda concerns me for my single mounts on the swingarm especially now with 17.5" rear shocks. Im no engineer and my swingarm was done by a pro shop that does land speed bikes and Im not going to be motocrossing the thing yet it does kinda concern me. Have you looked into this much?
    #73
  14. tobiism

    tobiism Been here awhile

    Joined:
    Jun 28, 2011
    Oddometer:
    347
    Location:
    Chandler AZ
    I've been talking with Bill as they were building the frijole 883 biltwell racer and double Shear definitely seems to be the way to go.
    #74
  15. tobiism

    tobiism Been here awhile

    Joined:
    Jun 28, 2011
    Oddometer:
    347
    Location:
    Chandler AZ
    Well I've gotten a lot of work done on the bike since last time. The original frame I built for this had some fabrication that I wasn't too happy with in the rear so I tore it down and rebuilt it the way I wanted it. The upper front half of the frame still needs additional bracing in the neck, backbone, downtube area. Finished the oil tank today. It is mounted with rubber isolation mounts as will the gas tank.
    20190509_152853.jpg 20190509_152955.jpg 20190509_153002.jpg

    The headlight is just thrown on there for shitz and Giggles. What I will actually have up there is a veetical fork mounted oil cooler and 2x 3" LED projection lights.
    #75
    AK650, scot_douglas, JagLite and 3 others like this.
  16. JagLite

    JagLite Long timer Supporter

    Joined:
    Jun 17, 2010
    Oddometer:
    7,344
    Location:
    Anchorage Alaska
    Lookin' good! :thumb
    You have a lot of point load in the middle of the swingarm where the shocks mount, are you planning to reinforce it?
    I think you must be, when you do the steering tube to down tube and top tube and other parts of the frame.
    Depending on how hard you ride it offroad, it might be a problem. :hmmmmm

    I'm glad you moved the shock mounts forward, that will help balance the travel front and rear.
    I've wanted to build a dual sportster for many years but decided the only part I would use from the sportster would be the engine.
    So your build is very much what I would have built so I enjoy following along. :beer
    #76
    AK650, villageidiot and tobiism like this.
  17. tobiism

    tobiism Been here awhile

    Joined:
    Jun 28, 2011
    Oddometer:
    347
    Location:
    Chandler AZ
    I have been kicking around ideas on how to reinforce the swingarm. I had thought about a long shock mount that spans about 5in of the swingarm. I'm glad you brought it up because I probably will do it.

    Decided to do a high mount two into one exhaust
    20190512_151939.jpg
    20190512_151917.jpg
    20190512_145937.jpg
    #77
    AK650, scot_douglas, Webman and 6 others like this.
  18. tobiism

    tobiism Been here awhile

    Joined:
    Jun 28, 2011
    Oddometer:
    347
    Location:
    Chandler AZ
    Progress is still ongoing. Here is the brake caliper bracket I made for the Nissin caliper I'll be using.
    Tools used were a router(with rounding and straight bits) , portaband, drill press, and files.
    Last thing I need to do to it is get another router bit with a rounded end so I can machine out the stress riser at the transition.
    20190526_154356.jpg
    20190526_154454.jpg
    20190526_154407.jpg
    #78
    AK650, Webman, joenuclear and 3 others like this.
  19. tobiism

    tobiism Been here awhile

    Joined:
    Jun 28, 2011
    Oddometer:
    347
    Location:
    Chandler AZ
    Lengthened the swingarm another 2 in because it just wasn't going to have great travel numbers. So now it's lengthned 3" total and I think I should get about 8 to 9" of travel. Maybe haha. Holy crap I can't wait to get this thing into the suspension shop and get everything tuned and on the trail. After the chassis is finished up I will yank the engine and get the cams reinstalled and I'm thinking about the @rekluse_motorsports auto clutch setup. This big heavy bike would definitely benefit from not having to worry about stalling at low speeds.
    20190526_203023.jpg
    20190526_203017.jpg
    20190526_203034.jpg
    #79
    JagLite and madrider5150 like this.
  20. tobiism

    tobiism Been here awhile

    Joined:
    Jun 28, 2011
    Oddometer:
    347
    Location:
    Chandler AZ
    Got the new double Shear lower shock mounts made to help spread the load along swing arm.
    20190526_213307.jpg
    #80
    JagLite, FR700, AK650 and 3 others like this.