Piercing Insights – Part 1
We are receiving many questions about the pros and cons of so-called wave piercing bows. There seems to be much debate among sailors, partly fuelled by unsubstantiated claims from manufacturers.As our regular followers and clients know, at Carbonicboats we do not make dogmatic proclamations about what our products will do. Instead we explain the reasoning […]
Production Line
Some more images of Katana Marblehead tooling coming together nicely…
Busy Times
Progress continues on RM tooling preparation in the workshop. In the office the A Cat design is approaching completion. R10R and IOM developments are in the pipeline and consultancy work continues on aerospace projects.
Wax On… Wax Off
Progress on Katana RM tooling: Plugs/patterns have been delivered, now preparations begin for taking female moulds.
In the Metal
Katana appendage tooling machined directly as female moulds from solid metal… The fin incorporates additional drought so it will be suitable for larger boats such as 10 Raters. It can also be adapted for classes with restricted drought such as the IOM. The lower Reynolds Numbers characteristic of IOM class boats makes it advantageous to use the top part […]
Shiny
Progress continues at pace on Katana M hull and deck tooling… Images courtesy Alex Kryger, Aptec Composites.
Katana Deck Layout
As work continues on tooling, the new deck shape is now visible. A good opportunity to share the thinking that led to the chosen layout. Initially a dedicated RC tray moulding was designed with the aim of locating the mass of winch, batteries and servo as low in the boat as possible and close to […]
Katana Tooling Takes Shape
From virtual to reality. The magic is being worked by Aptec Composites. Images courtesy Alex Kryger. Hull plug/pattern (above) and deck plug (below) machined ready for surface finishing. Notice the bonding flanges for mast tubes and centreboard case, as well as all deck features, integrated in the tooling to ensure accuracy and repeatability. The mould flanges […]
Katana Marblehead Tooling
Some images of the mould files ready to cut. In the case of hull and deck, male patterns will be machined to replicate the finished outer surfaces. Composite moulds will then be taken from the patterns which also incorporate the mould mating flanges. The finished moulds will be made such that they can be closed […]
Katana Marblehead Design – Foils
Marblehead foil design presents an interesting challenge because the maximum permitted draft is extremely generous. In most monohull keelboat classes, maximum draft is well short of the crossover where additional righting moment gained becomes outweighed by hydrodynamic and structural considerations. For most classes, draft can therefore be regarded as fixed (always go to maximum). In […]