Hacker Public Radio

HPR3178: Finishing the Recumbent Bicycle


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Websites:
recycled recumbent: https://sites.google.com/site/recycledrecumbents/home
cj hoyle milk crate tutorial: https://youtu.be/MvBx_74FzUk
Gallery:
1 - Bending Tools
This is how I clamped up the conduit bending tool in the trusty workmate. In this configuration you can bend the tube to specific angles and make sure the bends stay in plane. The goal here is to create two side rails that are identical. The seat webbing is sewn on to these rails.
2 - Needed weights
This photo shows some more of how the bending jig was set up. Those are counter weights needed to keep the jig on the ground while the tube is being bent.
3 - Seat rail plans
Mr. Carson provides pdf files that you can print out to be used as templates to match your bends.
4 - Marking tubes
5 - Sighting down tube
6 - Using marks
7 - Help with angles
8 - Matching to plans
Pictures 4-8 show the layout of the tubes and how the marks are used to ensure you make mirror image rails for the seat.
9 - Matching sides
10 - Seat backs
11 - Drilling fish mouths
12 - Seat backs ready for trimming
13 - Finished seat backs
14 - Jigging up
Pictures 9-14 outline the steps in fabricating the seat backs. The seat backs tie the rails together and are where the clamps that connect the seat to the frame grab the seat. This part of the construction can be overwhelming if you don't take it one step at a time. I had to constantly remind myself that building the bike was not a race but a journey, take your time and enjoy each little milestone. The last picture is the seat frame jigged up and ready for brazing.
15 - Seat stay one
16 - Seat stay two
The seat stay was at first glance very intimidating. This piece connects the back of the seat down to the frame, supporting the upper part of your body. Its made of many parts, but all they are is cut up pieces of steel rod and threaded rod that ar
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