Speedwell - auxiliary ketch
The boat was made deck down using the two shelf principle. A number of bulkheads were shaped and glued on, then the 'shelf' glued in place. For those not familiar with this method, the 'shelf' is a horizontal member that takes the approximate form of the boat at the water-line. A vertical keel member was shaped that fills the whole space from shelf to keel. Bulkheads were then glued between the shelf and each side of the keel piece. Sheet balsa was then attached except at the bows where a solid block was used.
The sides of the boat were prepared, then covered with two layers of doped tissue before painting.
A piece of galvanised sheet was bolted to the keel piece to form the keel, and a lead weight later bolted on.
A Kako No4 electric motor was mounted on the underside of a hatch with direct drive to the propellor via a simple coupling. Batteries were two lots of 5 U2s (D cells in today's terminology), and I made a pendulum switch that turned the motor on when the yacht was becalmed and upright. Steering was with a simple Braine type gear made from an old school set-square.
Masts and spars were simple dowel, and the first set of sails were made by Mum using old bedsheets.
Taking Speedwell sailing was quite an exercise in itself. I made a box to mount on the rear carrier of my bicycle, and cycled around 8 miles to reach a boating pond on Wanstead Flats. Sometimes it arrived in one piece !
Fast forward 40 years and after a move north of 200 miles and Speedwell had not only survived, thanks to that box, but had been given a new set of sails, this time blue.
More later.😉