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FreeB offsets


wd0d

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Everyone,

 

I need some help.  I have purchased and read both of Jeff's books and have downloaded the FreeB offsets.  I thought I had figured everything out and was ready to go, but then I noticed something that I couldn not understand.

 

The offsets for the second frame from the bow (there are only 4 frames) has the following measurement for the center deck beam - 10".  The measurement for the third frame back, which would be the frame that supports the aft edge of the coaming, has a center deck beam measurement of 12 15/16". 

 

I have not built a sof kayak before, so I am sure that there are things that I do not grasp at an intiutive level, but it seems to me that the aft edge of the coaming should rest on a frame that is lower than the frame that supports the forward edge of the coaming.  Even if I were to eliminate any pitch in the aft deck, the gunwale measurement for the aft edge frame is still higher than the top of the forward edge.

 

What am I missing?

 

Thanks for your help.

 

Bob

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Jeff,

 

More basic than that.  Somehow I overlooked the paragraph on page 26 of your first book regarding where 0,0,0 actually is.  I kept thinkiing that it was the bow end.  Went back and reread the section, my bad, its the aft end.  Now it all makes sense.  Seems like I have been a little bass ackwards my whole life.

 

Thanks,

 

Bob

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  • 3 weeks later...

I'm still waiting for my copy of your book to arrive Jeff so I don't know the ins and outs of drafting but the measurements are for the outside of the boat, correct? Are the corners of the measurements where the stringers, keelson, and gunwales go? That being said I would have to put the stringers and keelson in position perpendicular to the surface of the skin and the ribs below that point would have to be at least 1 inch thick. Is there a rule of thumb for how to shape the areas between the ribs? How far up the side of a rib should they go?

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Ah, my copy of Jeff's second book arrived yesterday and answered all my questions. Thanks for the detailed "step-by-step" how to draft section Jeff!

I do have a question about FreeB's stern draft. It seems to show the line of the tail edge of the boat but doesn't show the complete shape of the stern piece. Do I make up my own ideas with regards to the stern's final shape?

Richard

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Jeff is right.

I have lot of small boat building experience, including lofting.

FreeB takes some knowledge and judgement.

If it is your first boat, I would highly recommend buying plans from Kudzu Jeff. They are very inexpensive.

Then, when you're more comfortable, finish your FreeB.

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