The idea of relocating the outboard to inside the lazarrete with outboard well was explored;
-Advantage, centered flow over rudder would provide better directional control under power.
-Disadvantage, increased drag under sail, infilling original prop and prop cut out gained about 1/2 knot (10% of hull speed, and external outboard prop with well cut-out would at least loss that 1/2 knot and probably more with turbulence from the open well costing another 1/2 knot, an external outboard bracket permits lifting the prop from the water flow and less drag.
The current full batten balanced lug has produced a very well balanced boat under sail, and finger tip control of the rudder, altering hull drag at stern will impact on that balance.
More to come over the next few months to be migrated from September posting, with in water testing spring 2015. The outboard will also be fitted with a high thrust (elephant ear prop)
|Transom beam made from (3) 10" PVC trim boards pvc glued together and fiberglassed in place with pvc interior transom filler and fiberglassed plywood lazzarete floor.|
|6hp Tohatsu on outboard bracket on port transom beam|
|Transom beam old growth hemlock backer|
|Inside lazzarete starboard side, longer outboard bracket mounting bolts with compression sleeve extensions, to be fiberglassed in place.|
|Not pretty yet. Chopped strand fiber glass structural fill to port side transom beam and external through bolt compression sleeves.|
|2nd layer chopped strand fiberglass, to be sanded then base filler epoxy, then sanded then finish filler epoxy, then sanded, then paint.|
|Port transom beam|
|Final layer of structural fiberglass sealed with penetrating epoxy to mounting bolts on transom beam in lazarrete|
|Outboard bracket installed|