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Bamboo Trailer 01 Bamboo trailer 01 Welcome Innovative design Places that need a bike trailer The trailer’s innovative for 4 the most, often have the least reasons. capacity to build or buy them. 1) The plans are free to Carry Freedom developed the Document Notes distribute. Bamboo trailer to allow anyone the ability to build a strong This is a work in progress, so 2) Its simple. The trailer can be adaptable trailer from anything. appologies for all mistakes and made with very simple tools and omisions. The ultimate aim is skills. These plans allow a builder to have a document that can be to make a trailer from most followed and understood by most 3) Its flexible. The trailers materials, with pinned joints, and people irrespective of language length width strength and no bending or welding. Whether you culture or literacy. This of materials can be varied.. make it from titanium or bamboo, course will take a lot of time this is a stiff light trailer. It feedback and help. 4) Its strong. The trailer can be varied it in width length strength to weight ratio is near and strength, and made to fold. Copyright of this document perfect. belongs to its creator Carry We are developing this project as Freedom. Copying or reproducing These Instructions a non profit venture. These free this document in whole or in part plans are funded by profits from without our prior writen permision These instructions main aim is our western trailer sales. is prohibited, with the exception to provide, basic layout and of peer to peer distribution. sequences. It does not cover the Any help in developing funding detail of how to do things as and circulating this project is Peer to Peer distribution is techniques will vary depending on welcome. exchange of this document between the tools you have to hand and the two private individuals, and is materials you are using. permited on the understanding that the document will be distributed intact and no money changes hands. © Copyright 2005 of Simple City, all rights reserved. Visit www.CarryFreedom.com for more. innovating trailers General Notes 02 The Bamboo Trailer top set of spokes could be re- Solid Load Bed This trailer is special because placed by a flat load bed. The most obvious step to making no tubes need bent or welded, and the trailer useful is to replace all joints may be simply pinned or The difficult bits the top four spokes with a flat lashed. At one extreme this trail- The wheels are supported from each load bed. Onto this most things er can be made out of eight pieces side by brackets attached to the can either be lashed or bolted. of green wood or bamboo lashed to- four frame tubes running front It is worth reading our Y-Frame gether, at the other titanium and to back. These brackets should be instructions to see how our box Kevlar pinned together. Either way attached so they have flat plates QR works as this can be copied for you can have a very respectable facing parallel to each other with use on the Bamboo trailer. stiff light trailer. Variations slots cut in for the axle stubs. in width length and strength are Each wheel is supported by a ver- Fabric load bed easy; it will take any load you tical slot and a horizontal slot The spokes can support a sim- have. Hitch it behind a donkey if allowing the ability to adjust the ple load bed made from fabric, or you lack a bike, or make it fold/ wheels so they both are point- rope could be woven between the collapse if you lack space. ing in the same direction and not spokes to create a load bed. The touching the frame. Attach these load bed is best supported by the Construction plates securely or else you will lower spokes. If it is being woven You’ll need eight lengths of ma- have no end of problems. between the spokes a single cord terial capable of withstanding should be woven in a spiral to bending and compression, tubing This trailer hitches to the bike form the warp, then four separate or angle iron are ideal. You also at the bikes left hand rear axle triangular panels can be woven need eight “spokes” that are good stub. This is the most efficient, with the weft running from the at taking tension. These could be and the strongest place to hitch a load bed edge to centre. wire, chain, or steel strip. The trailer. (See our Trailer science exoticists amongst could use Kev- pdf for an explanation). Cut Down Barrel lar. Two bike wheels and a hitch Remove the brace wires from the will also be useful. The Purpose? centre and fill the void with an If anyone can build a trailer out old barrel, cutting some form of Seven tubes are pinned or bound of practically anything with hard- access hatch into it. together where they cross to ly any tools that can do anything, create the basic frame shape that then a whole new world opens up. Lifting Handles looks like a 6. This structure can The places where bikes are most The frame beam over hangs can be distort like a parallelogram, or essential are the very places extended to create lift handles. warp like a sheet of paper. with the least capacity to fab- At the simple level this provides ricate them. This trailer allows a useful grips to lift the trail- The Clever Bit what bikes there are to do a more er over obstacles on washed out With the addition of the eight useful job; from acting as ambu- roads. There is no reason not to spokes and the last tube this lances to carrying food to market. extend the inside right wheel pole floppy structure transforms into a Furthermore the building of these and shortening the outside left stiff light structure reminiscent trailers provides local jobs, and pole to create two long poles run- of a square bicycle wheel. helps invigorate the local econo- ning forward. These are ideal for my. Carry Freedom will be distrib- hitching to an animal thus turning Imagine the square load area as uting plans for it through chari- the trailer into a cart. the rim of a wheel, with 8 spokes ties such as World Bicycle Relief. connecting from its corners to a Four Wheeler central hub. Trueing these con- The Potential A second trailer can be hitched trols how square and flat the For the foolhardy the central tube onto the back of your first trail- trailer frame is. The arrangement can be extended to create a mast er, to create a four wheel trail- can be dished to make it flatter on for a land sail, and there are er. This is probably best done by the load side than the underside. plenty of options left for the extending the left inside wheel Four spokes stops the structure more practical amongst us. beam forwards and hitching this from parallelograming while the to the rear of the front trailers addition of another four and the inside wheel beam. hub stops the frame warping. The © Copyright 2005 of Simple City, all rights reserved. Visit www.CarryFreedom.com for more. innovating trailers Parts List 03 TWR Aft Right TWL T3 B3 T7 T4 B2 T2 B5 B2 T8 T6 T1 T5 B3 Left H3 H1 B1 B1 H2 B4 Fore B1 B5 Beams, from metal or wood. T1 T8 Spokes from wire chain or rope. H1 H3 Hitch Brackets from sheet metal. TWR & TWL Trailer wheels, from old bike. WB1 & WB2 Wheel Brackets, from sheet metal. NB. You will also need materials for making a load bed, and to join all the parts together. © Copyright 2005 of Simple City, all rights reserved. Visit www.CarryFreedom.com for more. innovating trailers Glossary 04 Measure, Bolt, Cut, Paint/Mark, Drill, M1,M2,M3,... B1,B2,B3,... C1,C2,C3,... P1,P2,P3,... D1,D2,D3,... T1 T8 H1 H3 Action/ WB1 & WB2 Measure Chain Detail Zoom Wire/ rope Good Bad Caution Metal Strip B1 Object Rod Proceed Beams B1 B5 Wood Metal B © Copyright 2005 of Simple City, all rights reserved. Visit www.CarryFreedom.com for more. innovating trailers Making Holes 05 Beam to Beam D1 P1 1. 2. 3. 4. 5. 6. P2 B1 D2 Beam to Plate 1. 2. 3. P1 D1 B1 NB. Always mark the entry side of any hole, with paint or a marker. This will be more accuratly positioned than the exit hole. When joining two beams the entry holes should be touching. © Copyright 2005 of Simple City, all rights reserved. Visit www.CarryFreedom.com for more. innovating trailers Bolting Options 06 Long Bolts(All). Short Bolts(Metal). Studs & Bindings (Wood & Bamboo). 1. 2a. 2b. The stud locates the two beams, while the binding prevents them separating. Alternatively the two beams can be notched rather than pegged with a stud. © Copyright 2005 of Simple City, all rights reserved. Visit www.CarryFreedom.com for more. innovating trailers Wheel Brackets 07 NB. D4 should be the same diameter as the trailer wheels axle. 4 of. B D1 2B D4 C1 D2 B *AA* D3 C2 4B Where.. 2B B WB2 NB. Most sheet dimen- WB1 2 of. sions are measured rel- 2 of. *AA* ative to the depth of the main frames beams. *AA* C3 C3 H2 WB1 WB1 H1 2 of. 2 of. NB. You need two types of wheel bracket. One with a Vertical axle slot, the other with a horizontal axle slot.
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