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This project took about five hours and a few hand tools.
It will take one lounge chair with aluminum frame members and arm rests.
Webbing was needed from the lounge chair and a regular lawn chair.
You will also need a couple of discarded bicycle wheels, a hack saw, drill, screwdriver, pop-rivet tool and pop-rivets, a spring and a small bolt and nut.
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After dissassembling the chairs select two U shaped tubes that have matching end widths.
These will become the outer frame for the trailer.
Flatten the last four inches of each tube end such that the flats are verticle.
Overlap the flat end and clamp, drill and pop rivet to create the outer frame.
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Cut a second set of tubes to create the inner wheel supports.
These will need to be cut both in length and width to fit inside of the outer frame.
Cut the arm rests to serve as tie structures for the ends of the tubes.
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Clamp, drill and pop rivet the flattened ends of the inner wheel supports in the same manner as you did the outer frame.
Make sure that the inner wheel supports are the proper length to fit snuggly inside to the outer frame.
Adjust the location of the inner wheel supports for a 3 1/2 inch spacing where the wheel axles will fit.
Clamp, drill and pop rivet sections of the arm rests to the ends of the tubes to tie them all together.
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Final frame layout.
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Use the foot end support from the lounge chair to build the trailer tongue.
Use another piece of the arm rest to fasten in the tongue.
Make sure to have three, four or five pop rivets on both sides of the tongue since there will be a great amount of shear force on these rivets.
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To make the trailer tongue flatten the end of the tongue and drill a 1/4 inch hole.
Take another piece of metal and bend it into an L.
Drill and cut a slot in one side of the L such that you can slip it onto the rear axle of your bike.
I made the slot angle down and to the rear of the bike axle.
Drill another 1/4 inch hole in the other side of the L piece.
Use a 1/4 inch bolt thru the hole in the tongue and the hole in the L and place a spring between the two parts.
Tighten the nut on the bolt to compress the spring.
This can be adjusted to limit the sloppiness of the coupling while still letting the trailer move freely with respect to the bike.
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Fasten the used webbing into the frame with enough slack to create a trough for your stuff.
Drill the frame and use the original screws.
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One idea for the trough is to use the webbing layout.
The webbing worked ok but not great.
Some items would slip thru the webbing and fall out of the trailer.
I am going to change this out to a continuous piece of cloth or maybe just make a continuous cloth liner.
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