Homemade single wheel trailer - Coffin Style
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Thread: Homemade single wheel trailer - Coffin Style

  1. #1
    Senior Member imabass's Avatar
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    Default Homemade single wheel trailer - Coffin Style

    Coffin trailer started as a thought and then I put it down on paper. Now it is in process of building.

    Using 1x2 steel tubing for the frame.
    2x2 steel tubing for the toung
    Yokes and U joint from farm supply
    Plan to skin it with pine.
    building coil over shoks from old fork spring, 100# shock absorbers, and square tubing. Will cover it with bicycle tube to protect the shock seals.
    using 10 inch scooter wheel
    homemade swingarm that is hinged with brass bushings like the 70's hond swingarms were made.
    Homemade VTX hitch from 1/2 plate. Welded it to the sub frame.










    I had a few hours to work on the trailer. As you can see I am almost done with the frame. I need to finish out the swing arm. I need to find the correct size tubing and bushings that I should be able to get at the parts store. i will also have to make the spacers. I put this on the scales and it currently weighs just under 75 pounds. I am hoping to finish it out for a total of 140-150 range or possibly less.







    Need help posting video from youtube...

    http://youtu.be/b-HqEQ4Yhcc?hd=1
    Last edited by imabass; 04-22-2011 at 06:30 PM.
    Check out my other home at www.SOHC750.net. Home of the CB750 SOHC ( 1969-1978 ) Choppers, Bobbers, & Cafe Racers.


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    Senior Member joe low's Avatar
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    LOOKING interesting so far ........keep us posted

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    Very impressive.
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    Senior Member pappy in MN's Avatar
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    very cool. will you offset the tire mounting bracket? with a spacer on the non-rotor side of that wheel, the tire is off-center. might that cause a pull to one side, or uneven tire wear?
    Pat H 04 1300 S
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    Senior Member enduro's Avatar
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    This guy sells them made out of actual blemished coffins. Note the arm hanging out the back.

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    , Smitt
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    Senior Member imabass's Avatar
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    Quote Originally Posted by enduro View Post
    This guy sells them made out of actual blemished coffins. Note the arm hanging out the back.


    That was my first plan. I found a couple by placing a wanted ad on craigslist. I found one that was used for only $400.
    Check out my other home at www.SOHC750.net. Home of the CB750 SOHC ( 1969-1978 ) Choppers, Bobbers, & Cafe Racers.


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    Senior Member imabass's Avatar
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    Quote Originally Posted by pappy in MN View Post
    very cool. will you offset the tire mounting bracket? with a spacer on the non-rotor side of that wheel, the tire is off-center. might that cause a pull to one side, or uneven tire wear?

    Yes I need to make new spacers. I originally made them and had it centered then I rebuilt the swing arm to a slightly different width so i need to make all new spacers for the swingarm and the wheel. This was just for the initil test
    Check out my other home at www.SOHC750.net. Home of the CB750 SOHC ( 1969-1978 ) Choppers, Bobbers, & Cafe Racers.


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    Senior Member cruiser7734's Avatar
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    Quote Originally Posted by imabass View Post
    That was my first plan. I found a couple by placing a wanted ad on craigslist. I found one that was used for only $400.
    Used? that is just scary

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    Senior Member Xman/qc's Avatar
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    It look like easy to handle empty but if you put load in it ? In a tight area did it still easy to handle ?

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    Quote Originally Posted by enduro View Post
    This guy sells them made out of actual blemished coffins. Note the arm hanging out the back.

    That just ain't right....

    But I guess you could use it instead of a tent... probably be a lot more comfortable than sleeping on the ground... but again... that just ain't right!


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    Senior Member heffly's Avatar
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    Sicka$$ Yankees. Geez I just cant see pullin that, hell I am trying to stay away from one dont need it following me,,lol

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    How will the hitch keep the trailer from tipping over?

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    Senior Member imabass's Avatar
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    Quote Originally Posted by pcdavis View Post
    That just ain't right....

    But I guess you could use it instead of a tent... probably be a lot more comfortable than sleeping on the ground... but again... that just ain't right!
    That was my thought. Just take the gear out and cover it with a tarp and get a good night rest. It would be like a camper for the bike. The one that I found that was used was for display of bodies that were being creamated. Just hanging out in there for a couple of hours before going in the furnace.
    Check out my other home at www.SOHC750.net. Home of the CB750 SOHC ( 1969-1978 ) Choppers, Bobbers, & Cafe Racers.


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    Seasoned Member VTX1300cnME's Avatar
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    I see the one wheel having issues when loaded. Issues when parked, and issues when towing, if the load shifts. .

    I dunno. . seems like two wheels might be a better plan. Would you be able to maybe set two wheels set a foot or two apart under the frame?

    If you stay on the one wheel track, I'll be curious how it turns out. I'm clearly not engineer material, cuz it seems like it'd fail to me. . unless I'm missing something. . .
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    Senior Member imabass's Avatar
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    Quote Originally Posted by smooth View Post
    How will the hitch keep the trailer from tipping over?
    Its all in the U joint. This is a U joint for a tractor PTO shaft. Example the drive shaft that would hook up a mower to the back of the tractor.




    Check out my other home at www.SOHC750.net. Home of the CB750 SOHC ( 1969-1978 ) Choppers, Bobbers, & Cafe Racers.


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    Senior Member texasmike's Avatar
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    i've seen a guy around here that has one thats a smoker he takes it to partys and bike rallys and does the cookin on it pretty cool'
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    Very impressive. The best of luck to you on that build, I can't wait to see it when it is all complete and how well it handles for you.

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    That's an interesting concept four your trailer... never seen one up close. Didn't really understand the u-joint concept until the picture. With the u-joint 'fixed' the trailer will lean exactly like the bike. Cool! I wonder how it affects the feel of the bike since when you lean you are forcing the trailer to lean as well... I wonder if you will even notice it??? Hmmm... Will the tail ever wag the dog?

    Please keep the pictures coming!

    Will you have some 'kickstands' or such to keep it upright when unattached to the bike? Something to assist with hooking it up? I bet that could be a struggle trying to slide the hitch in with the trailer leaning to match the bike. Might not be an issue at all... just thinking out loud.


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    Senior Member imabass's Avatar
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    Quote Originally Posted by pcdavis View Post
    That's an interesting concept four your trailer... never seen one up close. Didn't really understand the u-joint concept until the picture. With the u-joint 'fixed' the trailer will lean exactly like the bike. Cool! I wonder how it affects the feel of the bike since when you lean you are forcing the trailer to lean as well... I wonder if you will even notice it??? Hmmm... Will the tail ever wag the dog?

    Please keep the pictures coming!

    Will you have some 'kickstands' or such to keep it upright when unattached to the bike? Something to assist with hooking it up? I bet that could be a struggle trying to slide the hitch in with the trailer leaning to match the bike. Might not be an issue at all... just thinking out loud.
    Not sure yet until i try it out. more of trial and error since its all homemade and I have never used one before. From what I have read, people love the one wheel trailer since it leans and tracks behind the bike well it is ideal for curves vs the tradition 2 wheel trailer.
    Check out my other home at www.SOHC750.net. Home of the CB750 SOHC ( 1969-1978 ) Choppers, Bobbers, & Cafe Racers.


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    Senior Member SCteach's Avatar
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    That is a pretty cool design that you have going. My only question is why didn't you use aluminum instead of steal? I also am curious about the loads you add and the concern for balance with only one wheel. Seems like a lot of wieght/torque to the bike where connected when standing it up from the side stand as well. What kind of cover will you have for the wheel since it is inside and can kick up road debris onto your items inside.
    Last edited by SCteach; 04-23-2011 at 02:48 PM.
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    Senior Member kodiak536's Avatar
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    Question My thoughts exactly...

    Quote Originally Posted by SCteach View Post
    That is a pretty cool design that you have going. My only question is why didn't you use aluminum instead of steal? I also am curious about the loads you add and the concern for balance with only one wheel. Seems like a lot of wieght/torque to the bike where connected when standing it up from the side stand as well. What kind of cover will you have for the wheel since it is inside and can kick up road debris onto your items inside.


    When you complete this project, what would you estimate the total weight of the trailer will be unloaded?

    What capacity(carrying load) would you expect fully loaded?

    With what looked to be a 2" steel square tubing for frame, I'm guessing that the gas mileage will take a substantial hit in your wallet when it's fully loaded???

    Good concept regardless

    I've been toying with the trailer idea for a while and I'm sure to monitor your progress and the results on the road.

    Keep us posted all the way

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    Senior Member drtrider's Avatar
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    Quote Originally Posted by SCteach View Post
    That is a pretty cool design that you have going. My only question is why didn't you use aluminum instead of steal? I also am curious about the loads you add and the concern for balance with only one wheel. Seems like a lot of wieght/torque to the bike where connected when standing it up from the side stand as well. What kind of cover will you have for the wheel since it is inside and can kick up road debris onto your items inside.





    Same question I was going to ask.
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    Senior Member Philscbx's Avatar
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    For one wheel, I'd want very low CG, boat bottom shape.
    Anything acting top heavy like a loaded wheel barrel, is it going
    to take me down at a stop sign?
    Now fight both machine and trailer back up?
    Maybe air assisted landing gear to get vertical?

    Aluminum canoe shortened & chrome molly hardware sitting an inch
    off the ground is one I might do with motorcycle wheels with brakes.

    Hope the best, and way more guts than me.

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    Senior Member Classic Rider's Avatar
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    I'm just wondering whether one little scooter wheel is going to be sturdy enough for the weight and stresses? Guess we'll find out.

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    How are you going to beef up the bike suspension ? That trailer is looking good, but I'll bet it will top out at over 350 lbs. unloaded.
    SNUSH

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    Senior Member Fla.Cableguy's Avatar
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    Really killing me, want to see how this works out. Lots of different views. , Smitt
    Lot's of time and money. I trust no one's wrench, but my own. Avon Monster Club, Black Out Club, Mat Black Fastest Color....Pay it forward .

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    Senior Member Kealii's Avatar
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    I think this is a very good idea in thinking out of the box. Yes, i'm very curious to find out how it handles. The one wheel tracking while moving is a good idea because it'll be in the same plane as the bike, but i wonder about the mechanics in weight balance while stopped, lateral weight shift and counter balance and steering in a turn.
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    Senior Member imabass's Avatar
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    It is currently about 100 pounds. including wheel, suspension, and tounge. It was 84 pounds before adding the tounge. My dad has a high $ digital scale in his garage that I used. Weight was a concern when i was building. I built it from the thin 1x2 steel tubing because it was free and for me it is a lot easier for me to weld steel vs aluminum. I am expecting it to weigh about 130-140 pounds complete.

    I will add a lightweight track down both sides on the inside to secure the goods. I will cover the trailer with pine. I am leaning towards using pine flooring and planing it down fairly thin. The finishing it in a waterproof varnish. My dad has a full wood shop so woodworking tools and experience is no problem. Plan to attach the boards to the steel frame with some countersunk stainless fasteners.

    The scooter tire is rated for 330 pounds. I will likely replace it with a regular trailer tire.

    I am not expecing to pull heavy loads with this even though I think it could easily handle it. The widest section i will fill with sleeping bags, pillows, etc because that area will cause the most torque when leaning the bike in turns.

    There are a few places that make one wheel MC trailers and they have a hefty price tag.
    Check out my other home at www.SOHC750.net. Home of the CB750 SOHC ( 1969-1978 ) Choppers, Bobbers, & Cafe Racers.


  31. #30
    Senior Member snush's Avatar
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    Quote Originally Posted by Kealii View Post
    I think this is a very good idea in thinking out of the box. Yes, i'm very curious to find out how it handles. The one wheel tracking while moving is a good idea because it'll be in the same plane as the bike, but i wonder about the mechanics in weight balance while stopped, lateral weight shift and counter balance and steering in a turn.
    One wheeled trailers are nothing new. I've had one for 10 years now. Mine is about the size of a 30 gal. garbage can. Frame is made with 1X1 steel and a fiberglass body. It weighs in at about 75 lbs. empty.
    www.uni-go.com When we get to our motel, I just un hitch it and roll it right into my room.
    SNUSH

    I don't sweat the petty things,But I do pet the sweaty things.

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