3/9/13 - Floors Completed

The snow keeps piling up here in Duluth... another 8" outside of the shop this week and its snowing again at the moment... they're forecasting 4 to 7 inches today.  Meanwhile out in the shop I've completed the floors and mounted them on the building jig.  I used some angle brackets to help secure them.  I took my time and mounted them being mindful that they were square to the back bone, plumb, and level... a very important step.  I snapped a centerline along the backbone and aligned the center of each floor along this center line... another important step.  Even with the brackets they seem to be a little precarious balancing along the backbone.  I was initially worried about this, but I think that once I get the keelson mounted, those floors will become quite stable, so I'm not going to concern myself with it.  

One note though concerning Dave Carnell's floor dimensions... I chose to ignore his dimensions for the depth of the keelson edge (along the limber hole) on each of the floors.   Instead I chose to use his dimensions for the width of the floor and added one inch to allow for the thickness of the keelson.  Then from the center line I measured over one inch (half the width of the 2" wide keel) and made a point there.  Then I struck a line from that point to the point where the bottom edge meets the chine edge.  It seems obvious that the plane along this line needs to overrule the thickness of the keelson edge at the limber hole.  Instead I think it best to just let lie the resulting dimension at the thickness of the keelson's edge (along the limber Hole).  For most of the floors the dimensions specified was correct or very close, but floor number three was off by a full ¼" (narrower).  

To be specific, the plans call for ⅝" on floor #3 at the thickness of the keelson edge at the limber hole. But if you layout to the ⅝" dimension, the over all width of the floor at the center results in 6¾" (including the thickness of the keelson), but it is suppose to be 7".  Instead, if you layout by measuring to a 7" center width (as it ought to be) and then over 1" (half the width of the keel), and setting a point there, the resulting dimension at the the edge of the keelson at the limber hole is ¾" not ⅝".  But more importantly, an even plane is established from the point where the chine edge meets the bottom edge, right up to the edge of the keel.

Just to be clear on terminology, I'm calling the part that Dave refers to as the "keel" as the "keelson" and I'm calling the part that Dave refers to as the "shoe" as the "keel".  I believe that this is the proper terminology.  

coolboats