I went with wider 7mm boards to try and reduce spring back after unclamping. The thicker laminates put up a fight when tightening them down.
The layup is molded to the lower more gentle curve. The top asymmetric curves will need to be cut with a bandsaw later.
The beams run athwart the main hull as shown in the picture. There will be a block lashed to each end.
Task time: 7 hours
Total project time: 260 hours
Judging by the photo and your comments the beams are made up of ten laminations of 7mm douglas fir, so they are roughly 70mm X 70mm?
ReplyDeleteThat seems rather thin - are they going to be reinforced with CF or glass?
The beams get tapered down on the ends. The widest part ends up about 76 x 40. There are 9 layers of carbon over the fir.
ReplyDeleteDo you mean the WIDEST part or the NARROWEST part ends up 76 x 40?
ReplyDeleteThe widest is 76 x 40 mm.
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