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 Installing the Main/Mast Beam and notes on the back web of the back beam
   This is the backbone of the boat. If this isn't right there is nothing that is right so.... I lofted and assembled and laminated the bulkhead halves last instalment and now to mount. First I checked to make sure the fit was good. I needed enough room under them for the uni schedule that was to come and I wanted them to be as close to the hull/shear panels as possible without actually touching them. I did not want them to distort the shear line.
   Very little to do... a quick sand on the centre joint and that was about all.
  After tracing around the edges of the panels, I also marked the outside line of the uni. The clamps on the shear are holding some timbers along the shear to preserve the fair curve. Thanks to Craig for that tip!
   Now organise the materials and a wetting surface.
   The first couple layers I staggered slightly to spread the load.
   And then go to work.... the first layers were wetted on the plank but after those I wetted in place.
   The first layers extend down to the middle of the keel panel and subsequent layers are slightly shorter.
   Working quickly... place the cloth neatly....
   as above
   and wet....
   And work the unidirectional tape..! I started in the centre and worked outwards pulling with one hand to tighten the strands and consolidating in with the other hand.
   Notice the loops to the right..
   pull with the gloved hand... and bring the roller back... and I got it.
   all the loose spots I found along the way piled up on the corner... so same treatment.
   pull and roll....
   and away they go...
   And more and more... the plans called for 8 layers of uni and a couple of light DB in between. But I didn't have enough faith in that and I've seen problems in these plans before so.... 14 layers all up.
   There is 12 layers of 850 gr X 150mm uni. The plans call for 8 layers of 1000 gr or 800 gram uni, depending on which part of the paragraph you read... no kidding. Thats why I ran heavy... just making sure my total was over the highest number. But this isn't done yet.
   This shows how it was below..
   Now fit the bulkhead. The fit was perfect.
   Now organise the taping with the normal 750 tri ax. I had my peel ply set in precut sections as well.
   This is looking down at the bridge deck from the top of the bulkhead. The centre 'seam' is prepared for taping and I have used the same glue mix, not just Q-cell bogg, to fillet the joint and the edge of the mound of uni already in place. I then applied the 750 tri ax tape to each side of the bulkhead and then on top of that, I wetted a length of uni, folded in half lengthwise and laid it down on top of what you see here. So a double layer that buried in the tri ax tape on top of the uni schedule that was already in place... overkill anyone? Using the peel ply over all this left a very smooth surface. Little to do but paint after this.
   Nice to have something to keep the lot straight.

 I didn't have photos of the taping schedule applied to the top of the main beam but suffice to say... another eight layers of staggered length like that on the under side. Only difference is that I couldn't wet any of this in place. I had to wet on my plank and place it. The plans showed conflicting info on this. The illustrations clearly showed the tape interrupted in the centre by the platform that is to be part of the mast step. (yellow arrow)

I felt a little suspicious of this when I did it so I installed 6 layers under the platform (red arrow) that I buried into the rest of the tape up to where the blue arrow is. BTW.. I used 12 layers all up instead of the 8 in the plans.

This area is supported by other work that seemed OK but... it was nagging at me. Malcolm Salisbury came over for a look and he bagged the interruption as a weak spot right away.... hmmm...

   That did it then.. I cut away some of the platform and cleaned up the surfaces, and laid in another 12 layers of uni extending from 3.2 metres to just 1 metre to build up the overall thickness toward the centre. I cut back some of the old uni near the platform too, to avoid a sharp transition of strength.
   I went from 40mm on the original thickest spot to over 55mm in the centre. I feel better!
   Now organising the back web of the back beam. Not much new here so mention only briefly. It also had a heavy uni schedule under it and I did it similar to the main beam.. that is way more than called for.
   On this beam the bulkhead sits on the edge of the tape instead of centering.

 Now.. the passageway is to be edged with uni all around. This one had me concerned.. seemed like a dangerous job. How the hell do you keep the shit from falling out while you work? It turned out not as bad as I thought.

The plans called for a heavy uni tape rolled up and covered by a layer of light DB tape to stiffen the passageway.

I prepped by wetting the near surface with resin and mixed up some glue and covered the inside edge with it. I didn't want to chance air getting trapped under the rolled up uni.

   So... Measured the uni and DB, wetted the uni and away we go.... yeeh hah!
   I found the approximate centre of the wet uni and dry DB and clamped it with a welding clamp, one of those indispensable tools...

 And started working around toward the bottom. I used some staples from a staple gun... which I found to be unnecessary after the fact.

Make sure to keep the uni dead on the bulkhead! don't let any air get behind it because it is very difficult to go back and try to correct.

   Work steady... and quickly as you can but don't panic.
   The lower you go the easier it is... like politics!
   and the other side...
   almost there...
   GEEEZZZ... I think it's going to work!
   I found out that the curves eat up the DB tape. You need to measure quite a bit of excess. But no worries, I spliced in another piece.
   And then pulled the dumb staples. Never used them again and I've done several of these uni reinforced passageways since.
   It really paid to stay with it until the epoxy was getting firm. The closer it got the easier it was to tidy it up and smooth the surface and get out those little air pockets. I think the tack to take with these is to just get the shit up there and tidy it up later.

 Since then I did the chain plate bulkhead and that was a mean one and a lot of tape! But no worries. I even did the little bulkhead behind it the same way just cause.... It does make the bulkhead very stiff!


And the cabin you see is the future home of The Coastal Passage. The whole damn reason for this project.