Centreboards and Ruders Home › Forums › Development & Design › Boat Construction › Centreboards and Ruders This topic has 2 replies, 1 voice, and was last updated 19 years, 5 months ago by heymacaulay. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts December 2, 2005 at 1:42 pm #6741 heymacaulayKeymaster Ryan, Quite a number of SA boats are running Balsa Core Rudders, not sure about C-boards. Macca Hazelgrove at Yachtcraft makes them, and some make their own. An alternative to Balsa is Palownia, almost as light. Willy . . . December 13, 2005 at 11:06 am #6742 heymacaulayKeymaster Hi all, Using this lighter weight material, does this make the overall strength of the board less. Cheers Ryan kirk – 1546 – Skinny 😈 Author Posts Viewing 2 posts - 1 through 2 (of 2 total) The forum ‘Boat Construction’ is closed to new topics and replies.