why douglas fir?
Printed From: CorrectCraftFan.com
Category: Repairs and Maintenance
Forum Name: Boat Maintenance
Forum Discription: Discuss maintenance of your Correct Craft
URL: http://www.CorrectCraftFan.com/forum/forum_posts.asp?TID=13272
Printed Date: November-17-2024 at 1:20pm
Topic: why douglas fir?
Posted By: newoldboat
Subject: why douglas fir?
Date Posted: April-07-2009 at 11:41pm
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I am doing a stringer repair on my 90 SN and the only douglas fir I can find in SW Florida is christnas trees. I don't think the resin will bond well with all the pine needles and bark! Everyone around here sells southern pine and I am wondering if it will work the same-I'm no expert at wood so any help would be greatly appreciated.
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Replies:
Posted By: SNobsessed
Date Posted: April-08-2009 at 12:53am
I have heard pine is rot prone.
Someone suggested micro-lam (beam material) a while back. This might be a good choice if you can't get Doug Fir.
Then there is Coosa board, which is high tech!
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“Beer is proof that God loves us and wants us to be happy.”
Ben Franklin
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Posted By: BuffaloBFN
Date Posted: April-08-2009 at 10:19am
I think Jody(Fl Inboards) said he was getting fir in Tampa. Check the thread on stringer cost.
As I understand it, fir is preferred for
-strength to weight ratio
-adhesive properties
-straight grain
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http://correctcraftfan.com/diaries/details.asp?ID=2331&sort=&pagenum=12&yrstart=1986&yrend=1990" rel="nofollow - 1988 BFN-sold
"It's a Livin' Thing...What a Terrible Thing to Lose" ELO
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Posted By: 8122pbrainard
Date Posted: April-08-2009 at 10:27am
Joe,
Are you looking at lumber yards or "home centers"? You may want to look for some high end hardwood type suppliers - they will sometimes carry the Doug Fir as a select grade. That's where Greg (buffalo) found it.
The biggest problem with SYP is it's tendency to twist, cup and bow when it's dried. If you can find some nice straight pieces and make sure the moisture content is below 8% meter reading (the lower the better) then it is a alternate. I don't feel the rot issue will be a problem IF you carefully do this project using CPES, epoxy resin and seal all screw/bolt holes with CPES and 5200. All lag bolt holes must have generous pilot hole as SYP likes to split.
I was the one who mentioned the LVL (micro lam). I've never heard of anyone using it but to me, it sure sounds like it would be a very good alternate to solids. The only drawback is it's thickness. It's 1&3/4" instead of 1&1/2". You would need to compensate slightly to maintain the dimension between the stringers.
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/diaries/details.asp?ID=1622" rel="nofollow -
54 Atom
/diaries/details.asp?ID=2179" rel="nofollow - 77 Tique
64 X55 Dunphy
Keep it original, Pete
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Posted By: KFD14
Date Posted: April-08-2009 at 1:23pm
I hate to say this but I guess I must feel fortunate. The lumber yard here priced a 2x8x20 doug fir at $18.00. I am guessing that being close to the source has a lot to do with it.
I don't know how one would ship such an item, but I'd be willing if someone wanted to do the research. I'm in Idaho.
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%20http://www.correctcraftfan.com/diaries/details.asp?ID=4380" rel="nofollow - 83 2001 SN
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Posted By: WakeSlayer
Date Posted: April-08-2009 at 2:19pm
I had thought Jody said that too, Greg.
Seth, you are most defnitely in the right place. Where is Hailey in relation to Sandpoint? I have a cabin north of there.
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Mike N
1968 Mustang
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Posted By: KFD14
Date Posted: April-08-2009 at 2:32pm
Hailey is a couple of miles south of Sun Valley - the ski resort. We are in what is referred to as south central.
Sandpoint is nice. We used to have a place at bayview. Is your place on Priest Lake?
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%20http://www.correctcraftfan.com/diaries/details.asp?ID=4380" rel="nofollow - 83 2001 SN
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Posted By: JDiggs
Date Posted: April-08-2009 at 4:00pm
Your going to have to go to some places that cater to boats and high end lumber dealers and it's going to be pretty expensive. $125 min for main stringers probably
Im going with Southern Yellow Pine #2 for mine due to cost and having to go to Pensacola to get Doug Fir. Honestly, the Pine is stronger and in my opinion if you coat it in epoxy or CPES you arent' going to have the rot problem. I may be wrong, but only time will tell now I guess.
I would have preferred to go back with Doug Fir, but getting a working boat at the lowest cost was my top priority. So I'd recommend using Fir if you can. Call around to places around the coast
On the LVL, stuff is strong and is put together with waterproof glue, but I think it would be a MOFO to work with.
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Posted By: jdkenyon
Date Posted: April-08-2009 at 4:10pm
KFD, we are definitely in a good spot if we need fir for stringers. Even the box stores have it here. I am down in Twin Falls.
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http://www.correctcraftfan.com/diaries/details.asp?ID=1955 - 94 Ski Nautique
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Posted By: WakeSlayer
Date Posted: April-08-2009 at 4:16pm
I am the other way north. I am just over the eastern mountain range of Priest. Idaho is my favorite place in the world. Always extra happy to meet members from there.
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Mike N
1968 Mustang
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Posted By: newoldboat
Date Posted: April-09-2009 at 1:10am
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I checked box stores and local lumber yards for fir. One place said they could have it shipped in for $60 for a 2x8x12 so $18 is a great price. I am thinking of just using the driest SYP that I can find. I am going to use CPES so I hope it will be sufficient. I am ready to start cutting and treating the stringers so the SYP will have to do. If this boat isn't in the water by June my wife may kill me. If I suddenly stop posting in june you may have to alert the authorities.
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