Well, I have made a symbolic start in cutting out the keel. To hedge my bets I am making a ‘sandwich’ with 6mm balsa in the middle with 1mm ply on each side. This will enable me to build in the slot for a 6mm tube if I subsequently decide that twin props are not practical, for example, not having sufficient room due to the shape of Vic’s hull which he had to estimate. Until I have planked the hull I cannot be certain where the twin shafts will be located.
The idea of the ‘doublers’ is taken from Dave Milbourn’s Fairey kit builds. If I don’t need it, the slot can simply be filled in which is easier than trying to cut it after the hull has been constructed.
I will commence planking along the keel to help keep it rigid and straight. The guwhales along the top of the bulkheads should take care of the upper hull alignment. The bulkheads will be initially cut from ply, the centres cut out and the resulting frames faced with 6mm balsa to provide a good chamfered glue surface to attach the planks.
Well, that’s the plan…
Colin