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Old 08-18-2010, 02:32 PM   #301
EvanADV
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this thing looks AWESOME. nice work.
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Old 08-30-2010, 08:38 PM   #302
S.t.t.G.
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hmmm....
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Old 10-24-2010, 04:48 AM   #303
JoeyBones
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Just came across THIS link on the Carolina Riders site. This guy used an old scooter frame and I think he may be on to something.... Wouldn't take much to dual-sport it a little...
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Old 10-24-2010, 12:43 PM   #304
Danger4u2
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Hey, Joe would you copy and post a picture please, you have to join the site to view the pictures. I'm on too many forums to join one just to see pictures. Thanks.
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Old 10-24-2010, 03:55 PM   #305
JoeyBones
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Quote:
Originally Posted by Danger4u2
Hey, Joe would you copy and post a picture please, you have to join the site to view the pictures. I'm on too many forums to join one just to see pictures. Thanks.
Will do when I get home tonight. Pretty cool approach...
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Old 10-24-2010, 04:16 PM   #306
dwayne
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Quote:
Originally Posted by JoeyBones
Just came across THIS link on the Carolina Riders site. This guy used an old scooter frame and I think he may be on to something.... Wouldn't take much to dual-sport it a little...

You need to be a member to see the photos...
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Old 10-25-2010, 02:45 AM   #307
JoeyBones
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Sorry about that folks - didn't realize you had to join to see photo's. So here they are.... In short, he bought a used, junked scooter for $20, cut away everything that he didn't need (which was a lot, of course), then welded up a body-framework. With that framework "skinned", the swingarm re-attached and a "tongue" added, he says he has about $250 in the whole thing... He does say he's going to put higher-grade bearings in the back wheel to handle the higher speed.







Kinda fitting that there's an Airstream in the background of that last shot...

In any case, I think this is a cool idea and could easily be expanded upon to include the rear shock, remove the rear brake disc, etc (hard to tell in the pics but it looks like he did NOT carry over the suspension?).
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Old 10-25-2010, 08:04 AM   #308
slimjim503
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i pulled this from MN to OH [IMG][/IMG][IMG]

slimjim503 screwed with this post 10-25-2010 at 08:14 AM
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Old 10-25-2010, 08:43 AM   #309
tomatocity
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Quote:
Originally Posted by slimjim503
i pulled this from MN to OH [IMG][/IMG][IMG]
Looks like a very nice simple trailer. What are you using for a rear wheel on the trailer? I would like to see how you connected to the swingarm.
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Old 10-25-2010, 10:20 AM   #310
dwayne
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Has anyone seen trailers using the footpegs as the tow points?
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Old 10-25-2010, 07:50 PM   #311
reed523
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Here's another approach from a leftover motorcycle. It is still a work in progress. Some days i think i'm on the right track...some days i think i need to scrap the whole deal.

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Old 10-26-2010, 12:05 PM   #312
dwayne
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Quote:
Originally Posted by reed523
Here's another approach from a leftover motorcycle. It is still a work in progress. Some days i think i'm on the right track...some days i think i need to scrap the whole deal.


I like a lot of the concepts there, which do find to work well, and which are challenges?
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Old 10-26-2010, 12:21 PM   #313
ag_streak
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Quote:
Originally Posted by dwayne
I like a lot of the concepts there, which do find to work well, and which are challenges?
I humbly suggest that although the weight of two bikes is modest, the COG is relatively far from the contact patch, which gives the mass of the load "leverage" over the hitch, and therefore, the bike..

In the same vein, I encouraged another poster to eschew trying to design a one-wheeled trailer for a kayak. A two-wheeled design would manage the weight and balance better.

So look at the BOB-style (bicycle-trailer) in the picture above. It keeps the COG real low and close to the tire/wheel. Everything it carries isn't much above the tire. "Mass centralization".

Reed, does it sway a bit?
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ag_streak screwed with this post 10-26-2010 at 12:27 PM
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Old 10-26-2010, 12:50 PM   #314
dwayne
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Quote:
Originally Posted by ag_streak
I humbly suggest that although the weight of two bikes is modest, the COG is relatively far from the contact patch, which gives the mass of the load "leverage" over the hitch, and therefore, the bike..

In the same vein, I encouraged another poster to eschew trying to design a one-wheeled trailer for a kayak. A two-wheeled design would manage the weight and balance better.

So look at the BOB-style (bicycle-trailer) in the picture above. It keeps the COG real low and close to the tire/wheel. Everything it carries isn't much above the tire. "Mass centralization".

Reed, does it sway a bit?
so if you moved the load lower and possibly fwd, do you think you have a feasible design? Do you feel the front up attitude of the trailer might play a role in stability of this rig?

I am interested in the hitch design specifically, low mount to the pegs and the use of the U-joint.
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A "Day" of Dirt Biking Rockies East Slopes
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Old 10-26-2010, 03:35 PM   #315
reed523
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I suspect ag streak has it nailed. I have only pulled it empty at this point but it does develop some sway at about 50mph. I still need to eliminate a little slack in the hitch joint (u joint is solid but there is some slack in receiver portion)-also, the starter bike was a 20 something year old bike and the tire is in bad shape with an obvious flat spot. It does seem heavy side to side with the bicycles on it. My design was focused on keeping tongue weight down, but i suspect the high CG may be too big to overcome (unless i get a wing to tow it!).

I'm having some computer issues right now. I'll try to post more pics later of the hitch assembly.
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