Author Topic: RETROFIT A5, BD, Metolius, etc (A5 design) ledges  (Read 450 times)


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RETROFIT A5, BD, Metolius, etc (A5 design) ledges
« on: September 15, 2020, 08:04:10 PM »
The full size D4 8-piece frame could be customised and retrofitted to any of the ledges built in the past 30 years with the A5 design bed (corner eyebolt supports, webbing center support).

Frame specs: 
1.375" 0.058" and 1.125" 0.083" tubing (for double).
8: D4 1.375"/1.125" joiners

The main new idea is to make all sections same length using a combination of curved and straight sections, use the D4 hybrid diameter frame concept to make the areas of greatest stress bigger tubes, and to create a compact package when folded.  The initial disclosure of this idea (applied at patent office) is here and can offer tips on how to design the frame parts (4 bent, and 4 straight) for optimal strength, deflection, and folding characteristics.

video of frame here;
« Last Edit: September 16, 2020, 03:08:13 AM by Deuce »