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bow and stern stringer attachment


flynfysh

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being one of those guys who reads 3/4 of the instructions in skim mode I realized that with 99% of my Vardo frame done that I had attached the bow and stern stringers in a different manner than I see many others on this forum have.

 

After I had sawing and fitting I glued (with Titebond III) the ends of stringers to the bow/stern plywood and then lashed one side stringer to the opposite side stringer (picture) . I have noticed other builders drilled holes through the stringers and lashed them closer to the bow/stern, do you think that is necessary or do you think my way will work?post-5556-0-03555000-1457394615_thumb.jpg 

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I think you'll be fine. I've done it much the same many times. If you had not used glue then I would say that you would be better off lashing right on and thru the stem pieces.  

   I don't care to use glue on these boats in places I can avoid it so I drill and peg the stringers to the stems as well as lashing.  The main thing is to get a good attachment to the stems to keep things from shifting.

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A SOF hull is some what flexible when finished.  This is actually a good thing, it is part of why it is so resilient.  Glue joints do not like to be flexed or twisted.  It might be that the bow and stern joints for the stringers move so little that glue will work fine.  It has been proven over an again that lashing works  and stands up to flexing for a really long time.  The only glue I use on a SOF boat is the 2 or 3 components that make up the bow and stern and for laminating the combing (but that is a different subject).  It is more for convenience that I glue the bow and stern assemblies as it keeps them exactly in position to each other while lashing.  If the joinery of these pieces is close then after lashing the glue becomes unnecessary.

 

My suggestion at this point would be to add lashings as Jeff describes in his books, plans, manuals and videos.  Then if the glue fails it won't really matter.

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  • 2 weeks later...

So, I tried to take a picture to put up but it didn't show much. Instead I made a sample frame and covered it and then kept raising the temp on the iron. I was going to continue until I melted the fabric but, I was finally at full heat on the iron and the fabric still hadn't melted so I used that setting on the kayak. The fabric tension felt much better after that so now I'm painting it ...I'll send a pic when the paint job is done.

 

BTW starting on a second kayak (paid the second fee) this one for the girlfriend...the second frame almost done.

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Have another question, what wood do you guys out there use for the laminated coaming? On the first Kayak I used red cedar but it seems a little soft. I have some beautiful red cedar that I got from an old time boat builder 16" x 1 3/4" x 17' no knots, it's great for stringers.

 

Even though I live in a rain forest the supply of wood here is limited and there is only one lumber store (not a chain) in town and shipping from outside is very expensive. The wood available at the lumber store is..pine, fir, mahogany,or oak..there is a possibility of yew from a guy here who builds traditional bows.

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To laminate, the fir or oak would work, I think. You can also steam some green wood. Yellow cedar might be available green to you, and it's pretty nice. Also, you may be able to steam green yew. That would be cool.

You should try to find somebody that has a mill. There's a type named after your state, after all...

If you can't find good wood for a coaming, consider Jeff's plywood coaming. It's a viable option.

Ironically, the reason these type of boats exist in the first place is the people up there in frozen land didn't have trees. They did have bone, driftwood, and access to large hides, though...

Good luck.

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  • 2 weeks later...

the fabric did get bounce-a-dime tight and I've almost finished the paint work (one coat more).  It's now hanging in my living room to cure awaiting final (hopefully artistic) painting. I looked for other woods for the next coaming but may have to go with the red cedar again and find a harder coat or more coats of varnish. 

almost painted.JPG

post-5556-0-82812900-1459617611_thumb.jpg

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As I have stated before on this forum, the choice of spouses can make an enormous difference.

Mine, for example knew what she was in for when she met me.

It was not at all an issue to build an outrigger canoe in our old living room.

It is also okay to ride a skateboard in the house.

Wrestling is, however, sadly, absolutely banished to the outdoors. Break one irreplaceable vase...

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the second kayak is all framed and the tung oil is drying. I am about to laminate another coaming and was going to buy a clear fir 2x4 to cut and use...but...I read in another woodworking forum that kiln dried wood doesn't bend well. For my first kayak I use red cedar that I got from the stock of an old boatbuilder who cut and air dried his own lumber. I traded some flying for (4) 1 3/4" x 16" x 16' rough saw red cedar boards that I planed and cut and used both for my stringers and my laminated coaming. The only problem I had was the cedar seemed soft for the coamin.

 

Back to my question..what is your experience of bending air dried vs. kiln dried lumber

post-5556-0-04692500-1459817523_thumb.jpg

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I bought a 2x2x8 clear(well almost) fir board yesterday cut it into 3/32 strips and then tried to bend it with the heat gun method around my jig for laminating a coaming for my second Vardo...abject failure...the wood cracked even around the larger bend, For curiosity I continued and it broke twice trying to go around the smaller bend.

 

I was going to give up but, after a Scotch, decided to try again and to wet it down. I took it outside and hosed it down and this morning tried again....success, at least with the first strip. I'm going to count my blessings for now, let that strip dry and go fishing for the rest of the day...wish me luck...maybe I'll catch a steelhead or two. 

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