Dual Sport Trailer assembly thread

Discussion in 'Some Assembly Required' started by The Cheat, Jan 13, 2006.

  1. MrBracket

    MrBracket Been here awhile

    Joined:
    Aug 19, 2009
    Oddometer:
    263
    Location:
    Springfield, Oregon
    Is this not the same as running through the center of the axle? The chain adjuster bolt is connected to a block that encircles the axle inside the swingarm.

    It is true, if the trailer was to suddenly pull, like it getting hooked up on something while riding, it would try to pull the axle backwards. If something didn't break, it could cock the wheel inside the swingarm because the chain would stop one side from pulling back. I have not had this happen. I imagine the alum plate I made would crack in half before damaging the chain adjuster.
  2. MrBracket

    MrBracket Been here awhile

    Joined:
    Aug 19, 2009
    Oddometer:
    263
    Location:
    Springfield, Oregon
    No such thing as dumb questions, I just don't know all the answers.... The shocks were sized by what was availiable and trial and error. I started with a mountain bike shock and it was too soft, went to this mini motorcycle shock and it works great. Watch the videos I posted, you can see that the trailer suspension absorbs the bumps quite well. The shock spring rates are only one part of the equation, how you mount them makes a big difference. On a swingarm for example, the can be mounted very close to the pivot point, or far from the pivot point like older motorcycles were made. The distance makes a huge difference on the load the shock sees.
  3. ag_streak

    ag_streak Tiene Ruta Cuarenta?

    Joined:
    Aug 9, 2006
    Oddometer:
    3,238
    Location:
    Heart of the Chattahoochee
    Now that I think about it, you're absolutely right. The force would be the same as on the through-axle design. The axle could move on/in the swingarm adjustments unless the axle bolts are nice and snug to prevent it. I never thought of that until I looked at the picture of the block you made and thought about the force pulling on the axle inside the swingarm...

    Yeah, some positive device to hold the axle from sliding would be ideal, but I agree, it's probably not a problem as long as you are diligent in keeping the axle nut tightened to spec. The axle to swingarm interface is designed to hold some pretty serious forces!
  4. Dblarrow

    Dblarrow Been here awhile

    Joined:
    Aug 15, 2007
    Oddometer:
    125
    Location:
    Kila, montana
    Thanks! Look forward to hearing some user testimony.


  5. MrBracket

    MrBracket Been here awhile

    Joined:
    Aug 19, 2009
    Oddometer:
    263
    Location:
    Springfield, Oregon
    The wheels came in today via UPS!!!

    [​IMG]

    Hope to make some good progress next week on the trailers. Been building welding fixtures and collecting materials....
  6. Wlfman

    Wlfman Long timer

    Joined:
    Sep 6, 2011
    Oddometer:
    1,295
    Location:
    TN/AL
    :clap:rayof:clap
  7. ben2go

    ben2go Moto Flunky

    Joined:
    Jun 23, 2011
    Oddometer:
    4,006
    Location:
    Upstate SC USA
    Sweet wheels and shocks.Are you going to replace those tire with DOT approved tires?
  8. MrBracket

    MrBracket Been here awhile

    Joined:
    Aug 19, 2009
    Oddometer:
    263
    Location:
    Springfield, Oregon
    No, i may offer a DOT tire in the future.
  9. subybaja

    subybaja Long timer

    Joined:
    Jul 18, 2007
    Oddometer:
    2,893
    Location:
    Anchorage (Spenard)
    I'll bet that they're WAY under-loaded compared to that wheel's original application. Undriven with no brake, they'll probably rot off before they wear out!
  10. Wlfman

    Wlfman Long timer

    Joined:
    Sep 6, 2011
    Oddometer:
    1,295
    Location:
    TN/AL
    Mr Bracket

    How long is the rod you are using to go thru the axle for that style mounting? I'm trying to see if I can make it a Dual Purpose Dual Sport Trailer. My street bike has a hollow axle so if I can use it on both :evil
  11. duanew1

    duanew1 In my Pajama pants

    Joined:
    Dec 17, 2008
    Oddometer:
    763
    Location:
    Huntsville, AL
    This was my intention when I was designing mine that I never made. I know that the axle on my Z1000 is at least an inch wider than my dual sport (WR250R). I was thinking that I was going to have to make two mounting hitches to switch between. I wish that I had a spare $500 laying around. I would have purchased a prototype.
  12. MrBracket

    MrBracket Been here awhile

    Joined:
    Aug 19, 2009
    Oddometer:
    263
    Location:
    Springfield, Oregon
    The rod is 3/8" in Diameter and the axle needs to be between 10-1/2" to 11-1/2" overall length. I may make other sizes in the future, but that width fits many common dual sport bikes.... DR650, DRZ400, KLR650 (with special hitch), many KTM's, newer Husabergs, WR250R/X....
  13. Wlfman

    Wlfman Long timer

    Joined:
    Sep 6, 2011
    Oddometer:
    1,295
    Location:
    TN/AL
    OK. My street bike axle is about 13"

    Cant wait to get this thing :ricky
  14. MotoBoss

    MotoBoss Bad Influence

    Joined:
    Apr 15, 2009
    Oddometer:
    3,965
    Location:
    Mid South Indiana
    MrBracket you need to put your website link in your sig line for easy access and add all the video's...............................just say'n

    How 'bout falling over. Have you "crash" tested the connections yet? Riding two track and falling are pretty common and I wonder how the connection at the motorcycle hold up through repeated (several) dumps.
  15. MrBracket

    MrBracket Been here awhile

    Joined:
    Aug 19, 2009
    Oddometer:
    263
    Location:
    Springfield, Oregon
    Honestly, I have not crash tested it.. Crashing is one of those things we all want to avoid, especially after we add custom components to our bikes. But we all accept the fact that it is going to happen, we just don't know when or how. I really don't know how I'd "crash test" the trailer?? Most of my crashes were different..

    Just like pulling a trailer with an automobile, you need to be more aware while driving. You need to allow extra time for stopping and take turns a bit wider. Just like adding bags and racks to your bike, crashing with a trailer may result in a bit of a "yardsale".... It all depends on the crash. Of course, if anyones trailer was to get damaged, I would be fair in helping to get it repared and back on the trail.
  16. rw4x4van

    rw4x4van East Coast Rider

    Joined:
    Nov 20, 2004
    Oddometer:
    561
    Location:
    NJ
    Nice Job:clap

    What wheel are you using now....


  17. MrBracket

    MrBracket Been here awhile

    Joined:
    Aug 19, 2009
    Oddometer:
    263
    Location:
    Springfield, Oregon
    They are pictured a few posts back. They are a 14" motorcycle wheel. The tire is 2.5" wide.
  18. mpanther

    mpanther KotW - Just Ride!

    Joined:
    Apr 16, 2008
    Oddometer:
    1,036
    Location:
    Las Wages
    I think by "crash test" he is asking, have you dropped your bike or fallen over while riding off road?
  19. rw4x4van

    rw4x4van East Coast Rider

    Joined:
    Nov 20, 2004
    Oddometer:
    561
    Location:
    NJ
    Thanks......lookin' forward to the progress
  20. bete

    bete misguided adventurer

    Joined:
    Mar 22, 2008
    Oddometer:
    580
    Location:
    kansas Flint Hills
    Didnt see prices on your web page, and to lazy to read all the post. Do you have a price list? Thanks, and PS; this a great idea. bete.