Dual Sport Trailer assembly thread

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

  1. jesusgatos

    jesusgatos fishing with dynamite

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    Was just thinking that a steering stabilizer of some sort might be a pretty nice addition to a trailer. Might help tame the wag...
  2. thatboatguy

    thatboatguy That Boat Guy

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    Any time Nick,

    BTW Here is the back deck and cargo pod hack I did on the KLR. I'm going to narrow the box to something reasonable and put a hinge and latch on it. I re-purposed an old life raft pod for that one. Also makes a handy place to bolt down a... er hmm... [​IMG].

    There are some flying photos on our blog at The Further We Go. Still somewhat on topic as there's some early bike loading attempts. And slightly embarrassing that I was a mechanic on an expedition motorcycle without the means to deal with a flat tire... Never again!

    George
  3. oPAULo

    oPAULo jack of all terrain

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    Well what's the latest? Anyone putting miles on their trailers?:ear


    I just did a 360 mile weekend of back roads, gravel roads, dirt roads and trails.
    It did awesome on the trails. No complaints there.
    Around town and back roads. Awesome.
    Overall it passed and I'm happy with it but,
    This was the first time on fresh gravel roads with a loaded trailer. It was quite a
    handfull at times. MX tires with 25psi didn't help matters but I could really feel
    that 110 lbs. back there swaying behind. Straight line was ok up to 50 mph but
    cornering was sketchy. 30 mph and below was manageable. If I could get in the
    tracks with no loose gravel I could cook along pretty good.
    On the highway sometimes it would fishtail between 55 and 60. Not all the time
    but once it started I couldn't stop it. Kinda like a VERY slow headshake. It was
    not at all scary but annoying.
    I'm going to replace the 35 year old bearings and bushings. Upgrade to taper
    bearings in the head tube. Get some shocks with some damping and change the
    angle of the shocks to make it softer as I think the bouncing is a lot of my
    problem in the loose gravel. Maybe even a steering stabilizer.

    When I would rock the trailer I noticed the right mount was rocking where it
    seats against the small end of the axle allowing some flex. I made a bushing
    that slips over the axle nut and seats against the axle washer. I added a plastic
    washer for the trailer to pivot on. This added some stiffness but I think I still
    need to triangulate the forward mounts with longer gussets.
    [​IMG]

    A few from the weekend. We hauled a boat load of stuff in and on the trailer.
    It was awesome.
    [​IMG]
    [​IMG]
    [​IMG]
  4. DakarNick

    DakarNick Swabee

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    I haven't done much on mine lately. The coil spring I bought (only $25) is way too heavy duty for my trailer so back to the drawing board on that.

    I have some gas shocks that I may be able to use but not sure yet... They're strong but I don't know if they'll hold up to the constant cycling.

    I bought some angle and more tubing so hopefully I'll make some progress in the next few days.
  5. Eddieb

    Eddieb Long timer

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    Whats the length and width of the bed area?
  6. theWolfTamer

    theWolfTamer Lupie on a Mission

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    I read on singlewheel.com some one else built a swt and had to lengthen the tongue to stabilize their trailer at speed. Of course it's a street trailer but still here's what he said:

  7. oPAULo

    oPAULo jack of all terrain

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    Hey thanks for the info and the link!
    I was already considering a longer tongue because the box will just barely touch the license plate in the deep ditches. Now I have two reasons.:D
  8. ben2go

    ben2go Moto Flunky

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    Another thing that causes wag is slack in the hitch joints and flex in the hitch mount.
  9. DakarNick

    DakarNick Swabee

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    The coil spring I bought was way overkill so I decided to buy a cheap mountain bike at a pawn shop and use the coil from that. I also added two gas shocks. Not sure if it will all work but it's worth a try.

    [​IMG]

    [​IMG]

    [​IMG]

    My bed is removable in case I decide to change it. Two pieces of angle create a channel that slips over the "backbone" tube.

    On
    [​IMG]

    Off
    [​IMG]

    Eddie, the upper bed is 45.25"x25".

    Overall length from vertical (side to side) pivot to rear of tire is 97".

    Axle of bike to axle of trailer is 101".
  10. TouringDave

    TouringDave Tri Moto Veritas

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    Brilliant efforts guys! :clap
  11. lonewolf97

    lonewolf97 Long timer

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    Here is my trailer project. It was a jet ski trailer I had converted to carry my 97 dr650. Now I'm going to pull it with the same dr. I'm already pulling it with my roadking. All I need is to build a hitch for the dr. I'm looking at the subframe under the rear fender. It looks strong enough for an aluminum plate to be bolted to it in the same mounting holes the plastic mud guard was. That would allow the hitch to be installed/removed in just a few minutes. My game plan is to pull the trailer, set up base camp then remove the hitch for trail riding.
    [​IMG]
    [​IMG]
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    [​IMG]

    Sent from my Galaxy Nexus using Tapatalk 2
  12. MrBracket

    MrBracket Been here awhile

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  13. griffo1962

    griffo1962 Long timer

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    Does this mean it will be a much smaller package to ship ie cheaper?? and do you have plans for fitment to a KLX250?

    thanks

    g
  14. blacktruck

    blacktruck Been here awhile

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    I used to have a trailer for my Venture Royale. It was a pretty good sized trailer and the extra space meant it was usually too full. It pulled very well but that was a big bike with lots of power. I'm in the market for a KLR and think that a small trailer would be better than some of the overloaded bikes I've seen in their RR. I'm looking for ideas or input. Is this a feasible idea for a KLR? I would plan to travel light and one up but this would allow me to keep the weight off the bike and give me a few cubic feet of storage. Does anybody make a hitch or small trailers like that? I'm overseas so still in the planning stages at thhis point. Just looking for ideas here and hoping to pull the trigger on it when I'm done here.
  15. jgas

    jgas Stoogely Adventurerer

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    I've been thinking about doing this for years but my fabrication skills are in the infancy stage. I've taught myself to weld steel fairly well and sometimes I can even use a tape measure without mistakes. Gotta have the right amount of beer. Fabrication and waterskiing requires beer for me. 2 beers, I get better. 3 beers makes me reliable. Fewer mistakes than sober that is. 4 beers and I start quickly going downhill. The trick is after 3 beers, to drink at the exact rate that keeps me working better, not worse. It's an art in itself.

    If I did this, the trailer would have to be built for me to lay down on, stable, narrow, and tough. It would need to be close to the bike so I could turn around without unhooking on roads and wide trails. My goal would be to pull it behind my DRZ in all but the hardest singletrack. I would need to be able to pull it into some really tough spots without crashes or breaking it. My dream trailer would be long enough for me to use it for a camper after I unloaded it. Maybe have a small lightweight rack that I could drape a tarp over and lay inside of for camping, then take it apart or fold it all up for riding. It would need to have a lightweight detachable frame that could be put together to lay on for sleeping and stay off the ground. The frame could theoretically be mounted lengthwise or crosswise to the trailer. My ideas far outstrip my ability! I would like to have a brake on the trailer, and I think that one wheel would be better than two, maybe with outrigger tires like training wheels that only touched the ground when going slow or turning around.

    If someone could build this and market it cheaply it would make a fortune! Or sell easy to use plans for the do it yourselfer. Some of the ones I've seen here look great but I'd want to somehow try various ones before copying one to make sure it worked for my uses. I'm probably the only idiot that would even try to ride singletrack with a trailer, but it sure would be cool! I have seen bicycle trailers that hardcore off road guys pull with Mtn bikes. One guy has ridden all over Colorado pulling a trailer with a bicycle.

    Has anyone tried pulling the trailers from the top of the bike, attached to the subframe or rear rack area? This would put the trailer at an upward angle so that it wouldn't drag, give it cornering clearance, and bring the trailer tire/tires closer to the bike. It would also keep the trailer from being affected by the swingarm moving up and down. On most bikes the subframe/rack area would have to be modified to hold up to the stress, but that would be pretty easy compared to designing the trailer I'd think?

    Anyone thought of making the trailer tire, (the singletired ones), so that the tire/wheel actually leans with the bike? It would keep the trailer tire's contact patch constant and the trailer should follow the bike better.
  16. oPAULo

    oPAULo jack of all terrain

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    Go back and read through the thread. All single wheel trailers lean with the bike.
    As far as sleeping in it, that would be a big trailer. Just throw a fold up cot and tent in the trailer.
    Here's mine going through some mean stuff.
    <iframe width="420" height="315" src="http://www.youtube.com/embed/-k-DjnjvxPc" frameborder="0" allowfullscreen></iframe>
  17. Danger4u2

    Danger4u2 KX500 is Danger4u2

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    Attaching at the axel provides unsprung weight to the bike. Any attachment to the bike subframe or frame will be sprung weight. I would think a low unsprung weight would be more stable off road, not changing the weight bias of the suspension fore and aft.
  18. dwayne

    dwayne Silly Adventurer

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    The trade off is that your rear suspension setup is reliant on the weight of whatever is hanging off the shock, which would now include the "tongue" weight of the trailer. In the world of high performance unsprung weight is far worse than sprung weight, as it compromises the ability of the rear wheel to track over bumps because of added inertia. However subframes are usually not designed for the kind of loads discussed and move the weight higher up on the bike.

    If I had the skills I would find a way to hook the trailer to the footpeg mounts. It keeps the weight sprung, at a low, central point on the bike, better bias the front/rear loading etc.

    The trade off is this method would be slightly heavier, more complicated, and less flexible in terms of moving the mount from one bike to another,
  19. blacktruck

    blacktruck Been here awhile

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    I'm in complete agreement with you. In my opinion there should be a way to mount the hitch portion to the frame somewhere. I looked at the moto mule website. I like the idea of the single track but not keen on the axle mount. Need to rethink this for me a little. I've even seen a couple of the two wheeled trailers that looked pretty good but you now have to add some for width. I've pulled a two wheeled trailer with a bike before but it was a touring bike so you didn't really worry about the width or going in to a corner too hot and flipping the trailer. Has anybody ever made a regular hitch for the KLR or does this need to be invented too? I would just like to find some way to reduce the actual weight carried on the bike.
  20. GHO100

    GHO100 Crazy George

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    Has anyone considered using a mover's hand truck as a body for their trailer?

    [​IMG]

    Like pictured above, but laid flat.

    Remove the standard wheel and add your own, say from a 50cc scooter attached with a shock and hingepoint.

    Only thing left to figure out would be the hitch attachment to the bike?

    :ear