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lakedog55
Gold Member Joined: November-11-2010 Location: Lake Weir Fl Status: Offline Points: 835 |
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Posted: December-02-2010 at 1:58pm |
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Is the foam structural? I have removed the floor and foam, after reading several post, and a couple of soft spots, The wood appears to be good for the most part. All of the lags for the motor mounts tighten and hold real well, I am going to make a couple of test holes to see if they are still good, With the problems the foam creates it seems better to back without it, but I am no boat engineer. Any suggestions?
Thanks Mike |
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Lakedog55
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21184 |
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What boat do you have? The foam is certainly structural in the newer boats (2001 hull and forward) and the argument could be made either way on the older stuff. Some of the smaller boats would probably be fine without it, but the larger ones (our BFN for example) would oilcan pretty badly without the foam.
I have 2 suggestions: 1) If foam is removed, something should be put back in place to strengthen the structure in its absence. On our BFN, we put in ribs every foot or so. 2) If youve gone through the trouble of removing the floor and foam, replace the stringers while youre in there. Its clear youve got some degree of rot going on and its much easier to address it now while its apart. |
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lakedog55
Gold Member Joined: November-11-2010 Location: Lake Weir Fl Status: Offline Points: 835 |
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The boat is a 1986 SN. I need to pull the motor is what you are saying and do it once and forget about it. oh so much work and so little time.
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Lakedog55
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lakedog55
Gold Member Joined: November-11-2010 Location: Lake Weir Fl Status: Offline Points: 835 |
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When I do the stringers can I use yellow pine? It is very available>
Thanks Mike |
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Lakedog55
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Keeganino
Grand Poobah Joined: October-27-2009 Location: North Carolina Status: Offline Points: 2063 |
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Douglas Fir is the wood to use. |
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"working on these old boats may not be cost effective but as it shows its what it brings into your life that matters" -Roger
1973 Skier |
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gun-driver
Grand Poobah Joined: July-18-2008 Location: Pittsburgh, Pa Status: Offline Points: 4127 |
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Like Tim said if you go the route without foam then you need to put in addional support for the floor. It also ties the sides of the hull to the bottom and mains.
This is what I did in my '85 I left access for water to escape and allow air to flow to help dry things out. |
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lakedog55
Gold Member Joined: November-11-2010 Location: Lake Weir Fl Status: Offline Points: 835 |
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That is way cool, do you need a winter break in Florida? Does anyone have a drawing of what the stringers are look like. On the sides you added what looks like a cat for the floor to res on, what did you use to set the stringers and other wood. The whole fiberglass lay up thing is a mystery to me. Is there anywhere to go for more advice. I will definetly be going without foam, What thickness plywood did you use? Why the fir?.
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Lakedog55
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lakedog55
Gold Member Joined: November-11-2010 Location: Lake Weir Fl Status: Offline Points: 835 |
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One more question How far do the main stringers extend toward the bow, I cut my floor out exactly where you did. And have managed to get the batterey box out but not the vents any tips I will try and post a picture
Thanks Mike |
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Lakedog55
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lakedog55
Gold Member Joined: November-11-2010 Location: Lake Weir Fl Status: Offline Points: 835 |
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trying the picture again
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Lakedog55
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Keeganino
Grand Poobah Joined: October-27-2009 Location: North Carolina Status: Offline Points: 2063 |
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I went through the same thing last year and asked all of the beginner questions. I started the thread 73 Skier Restoration and set out to document my entire rebuild. There are over 200 pics and the CCF community poured their heart into 25 pages of suggestions and ideas. The below threads are what got me started.
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"working on these old boats may not be cost effective but as it shows its what it brings into your life that matters" -Roger
1973 Skier |
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Keeganino
Grand Poobah Joined: October-27-2009 Location: North Carolina Status: Offline Points: 2063 |
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The stringers end at the airbox. To draw the new ones your best bet is to remove them in a way that you can use them as a template. All that is covered in the threads above. The more you read the clearer the process will become.
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"working on these old boats may not be cost effective but as it shows its what it brings into your life that matters" -Roger
1973 Skier |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Keegan,
Thanks for doing all that searching! I agree that no book is needed. It's all here at CCfan! |
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malibud
Gold Member Joined: July-08-2009 Location: north carolina Status: Offline Points: 613 |
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I am in the same boat my stringers are good 85 ' 2001 but would like to get the wet foam out it seems like a lot of work and expense to replace stringers when they are still good any way around this? hat about spraying in closed cell like Icyene ?
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TRBenj
Grand Poobah Joined: June-29-2005 Location: NWCT Status: Offline Points: 21184 |
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The misconception is that theyre still good... just because they look ok doesnt mean theyre dry and rot free. Its already a lot of work and expense to go in and dig the foam out, then replace the floor and carpet. If you only do that without adding floor/hull support to replace the strength of the foam, then you'll actually be making the boat worse, not better. Doing the job twice (once half assed, then again to do it right) is not recommended if youre concerned about time and money. Do it once and do it right- or dont bother at all. |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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I agree with everything Tim has said. Do a stringer job now before it comes back to haunt you. |
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Keeganino
Grand Poobah Joined: October-27-2009 Location: North Carolina Status: Offline Points: 2063 |
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Tim actually gets credit for this list. He posted it on page 1 of my thread just as I was getting started. I have pasted it into a few beginner threads now as the same old questions I had to ask keep coming up. It takes a lot of reading and planning to take on a rebuild if you do not have any experience. I know from experience. |
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"working on these old boats may not be cost effective but as it shows its what it brings into your life that matters" -Roger
1973 Skier |
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lakedog55
Gold Member Joined: November-11-2010 Location: Lake Weir Fl Status: Offline Points: 835 |
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Okay I am going to make preps to pull the motor, do I need to make any measurements before beginning . I am going to pull one stringer at a time and ask a bunch of questions in between, I will use or try and use the same materials you guys are using, Will a microlamb beam or lvl work in place of the fir?
Thanks Mike |
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Lakedog55
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Keeganino
Grand Poobah Joined: October-27-2009 Location: North Carolina Status: Offline Points: 2063 |
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I took pages of measurements before I started the demo work, but did not use them much to be honest. It is easy to see where the stringers go down because there will be a groove that they fit into so the placement is not really an issue. There will be a definite line that shows the floor height all the way around the hull so here again you have a good visual indicator.
My boat did not have an engine cradle so the most critical measurement for me was the engine placement. From transom to tranny mounts and from log to tranny coupler were about the only measurements I used. I mocked up the floor in cardboard before cutting the plywood. |
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"working on these old boats may not be cost effective but as it shows its what it brings into your life that matters" -Roger
1973 Skier |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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Mike,
After some have had problems finding the Doug Fir, I suggested using LVL. We actually have one member who is using it but I haven't seen him post for awhile. I'll see if I can find it (or you can try too) by doing a search. He posted some pictures too. A couple of cautions though. Order it without the weather coating or if that is a problem, make sure you do some aggressive sanding on the faces with the belt sander. Also, do to it being thicker, make sur you offset the extra to the outside so the distance between the mains is the same. |
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8122pbrainard
Grand Poobah Joined: September-14-2006 Location: Three Lakes Wi. Status: Offline Points: 41045 |
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lakedog55
Gold Member Joined: November-11-2010 Location: Lake Weir Fl Status: Offline Points: 835 |
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Thanks for all of your guys help, The reading has been most interesting. We need a video. Anyway my question is what height of timber do you guys use? The talles measurement I have came up with is around 6 1/2, But that is with Glass on it and in the boat. I am wanting to order my wood so I have it. I also want to get a qoute on the lvl on monday.
Thanks Mike |
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Lakedog55
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Keeganino
Grand Poobah Joined: October-27-2009 Location: North Carolina Status: Offline Points: 2063 |
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The skier took 2x8s for the mains and 1x6 for the secondaries. The SN is bigger so I would assume that the stringers would be at least this tall.
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"working on these old boats may not be cost effective but as it shows its what it brings into your life that matters" -Roger
1973 Skier |
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lakedog55
Gold Member Joined: November-11-2010 Location: Lake Weir Fl Status: Offline Points: 835 |
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Has anyone glued up there own lvl using 3/4 inch ply? I got a qoute for the fir for my secondaries and mains and a little extra for around 340.00 Does that sound okay?
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Lakedog55
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lakedog55
Gold Member Joined: November-11-2010 Location: Lake Weir Fl Status: Offline Points: 835 |
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When I pull this stringer deal off can I be upgraded to at least a groupie?
Mike |
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Lakedog55
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Keeganino
Grand Poobah Joined: October-27-2009 Location: North Carolina Status: Offline Points: 2063 |
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Plywood will have some grain running in the weakest possible direction. For that reason it is not considered a good material for making stringers. For $340 I would just go with the DF so you don't have to reinvent the wheel and have to wonder how well it is going to work. |
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"working on these old boats may not be cost effective but as it shows its what it brings into your life that matters" -Roger
1973 Skier |
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Keeganino
Grand Poobah Joined: October-27-2009 Location: North Carolina Status: Offline Points: 2063 |
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Just a few more posts and your status will upgrade |
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"working on these old boats may not be cost effective but as it shows its what it brings into your life that matters" -Roger
1973 Skier |
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lakedog55
Gold Member Joined: November-11-2010 Location: Lake Weir Fl Status: Offline Points: 835 |
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Okay guys The material is ordered no turning back now
order consisted of 2@2x8x14 1@2x8x8 offset for motor cradle 1@2x6x10 instead of installing a gap in the rear of the secondary 6@1x6x12 for secondary and other 1 2x4x8 for something ( will use this for banging my head on repeatedly) If anyone is in Florida I found a a local company out of Leesburg, wood is supposed to be vertical clear Douglass fir purchase was made for $340.00 Will post pictures when wood arrives. Thanks Mike |
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Lakedog55
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eric lavine
Grand Poobah Joined: August-13-2006 Location: United States Status: Offline Points: 13413 |
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measure twice
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"the things you own will start to own you"
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lakedog55
Gold Member Joined: November-11-2010 Location: Lake Weir Fl Status: Offline Points: 835 |
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Eric,
I hope I measured correctly. If not I will have some wood for sale at a very reasonable price. Mike |
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Lakedog55
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eric lavine
Grand Poobah Joined: August-13-2006 Location: United States Status: Offline Points: 13413 |
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I gotta set of bunkbeds for my children, I had to cut 3 pieces of plywood to hold up the mattresses, measured, cut them and went to fit them.....mf, 2 were an inch to long and the other was an inch to short...one of lifes mysteries
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"the things you own will start to own you"
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