SunSail 09 Measuring for the Tubing

 

Field Measurements.

 The measurements as taken on Friday Feb 28th. 

Modified Measurements.

Suggested modifications 01. Notice the front and middle ribs are the same.

Misalignment of poles from field measurements

This parallel projection from the rear shows that the bends/corners don't line up. The ends also land at different positions on the boom. We just need to verify these measurements to correct the model to match the boat. Currently the middle rib is the shortest. I don't think that was intended.

Modified alignment 

This image shows modifications to align the rib height and how they contact the beam. (red dots)

Rear Rib alignment and support from field measurements

A new rib attached to the rear stanchions could support the bimini and provide space to board the boat comfortably. (shown in yellow) The rear bimini rib (not highlighted) should coincide with the same center point. (red dots) The two ribs are redundant for the 87cm section...     There is a lot of redundant tubing in this design. See the next image instead.

Modified Rear Rib and support

Backstay pole (shown in yellow). 136cm. Qty 2. There may be a slight bend for alignment. This is a much lighter, more efficient replacement for the previous hoop design shown above.

Notes:

1. The vertical poles slide over the horizontal (top) poles with friction clamps to adjust height.
2. What should the extra length for item 1 be?  (30cm?)
3. The rear rib will need a tensioning ability. If straps to the deck aren't sufficient because of the sharp angle and short distance, a pole extending from the boom may be required, intersecting the rear rib at the center line.
4. The rear ribs at the center line will need a coupling, a telescoping tube with a 4deg bend. 
5. 
   

All parts must fit into these two storage compartments when disassembled.