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Re: Reinforcing a boat for a trip
By:lc
Date: 8/10/2010, 4:43 pm
In Response To: Re: Reinforcing a boat for a trip (Paul G. Jacobson)

I was going to cut the bulkheads out to do the work and add them back in after the work was done. It was suggested in a previous post that glassing the outside might make more sense so I might not do this. I would like to move the front bulkhead closer to my feet though to buy a little more storage space.

: Cutting out the 'partitions'--we call them 'bulkheads'-- would be a
: really bad idea. They provide a lot of the bracing and strength
: that your boat has. They also create watertight compartments or
: air chambers which are vital safety features on your boat.
: Removing them defeats your purposes, and poses a safety hazard.
: . Think of them acting on the hull and deck like spokes on a
: bicycle wheel. Removing the spokes to lighten a wheel only works
: for people who can replace them with some high--tech invention.
: For everyone else the wheel falls apart.

I could be wrong. I thought it was in the 44-47 range though.

: Frankly, I doubt a plain 18' fiberglass kayak weighs just 40
: pounds, but I digress.

Nice analogy, makes sense.

: Simply adding layers of glass cloth and resin to the inside of the
: boat is a lousy way to reinforce it or stiffen it. Ever carry a
: 4x8 sheet of 1/4" plywood? If you hold it flat it will sag
: considerably under its own weight. Flip it on edge, though, and
: it doesn't sag at all. Same idea applies here, but more so.
: Apply a flat layer of new glass cloth and it is under 1/10"
: thick. That doesn't do anything to add stiffness. It adds
: weight. Use the same amount of glass, but orient it so it forms
: ribs or a honeycomb, or is corrugated (like the folded middle
: layer of paper in a piece of cardboard) and now you have some
: stiffness.

I was thinking of just adding a few layers of flat glass along the keel line. I was only looking for scratch protection with this.

: What kind of keel strip? Are you thinking of a couple layers of
: flat glass running along the keel line? That adds some scratch
: and dent protection in the most likely area to get scratched but
: does little to increase stiffness. It doesn't weigh much.

Big help, Thanks! I'll have to read the reply a few more times to digest it all though.

: Just some ideas here for you. Hope this helps.

Seems like I might need to spend considerably more time thinking about this idea. It sounds like it might be outside my abilities. Better to find that out now though!

Thanks!

Messages In This Thread

Off Topic: Reinforcing a boat for a trip
lc -- 8/9/2010, 10:25 pm
Re: Off Topic: Reinforcing a boat for a trip
Scott Baxter -- 8/11/2010, 9:06 am
Re: Reinforcing a boat for a trip
Paul G. Jacobson -- 8/10/2010, 2:26 pm
Re: Reinforcing a boat for a trip
Brian -- 8/12/2010, 12:30 am
Re: Reinforcing a boat for a trip
Bill Hamm -- 8/12/2010, 4:00 pm
Re: Reinforcing a boat for a trip
Brian -- 8/13/2010, 12:12 am
Re: Reinforcing a boat for a trip
Paul G. Jacobson -- 8/13/2010, 8:52 am
Re: Reinforcing a boat for a trip
Brian -- 8/13/2010, 6:50 pm
Re: Reinforcing a boat for a trip
Paul G. Jacobson -- 8/14/2010, 7:41 am
Re: Reinforcing a boat for a trip
Brian -- 8/15/2010, 11:54 am
Re: Reinforcing a boat for a trip
Bill Hamm -- 8/15/2010, 1:26 am
Re: Reinforcing a boat for a trip
Brian -- 8/15/2010, 11:56 am
Re: Reinforcing a boat for a trip
Bill Hamm -- 8/16/2010, 12:50 am
Re: Reinforcing a boat for a trip
Brian -- 8/13/2010, 9:55 am
Re: Reinforcing a boat for a trip
Bill Hamm -- 8/13/2010, 12:48 am
Re: Reinforcing a boat for a trip
Brian -- 8/13/2010, 9:38 am
Re: Reinforcing a boat for a trip
Bill Hamm -- 8/14/2010, 1:55 am
Re: Reinforcing a boat for a trip
Brian -- 8/13/2010, 6:42 pm
Re: Reinforcing a boat for a trip *PIC*
Paul G. Jacobson -- 8/17/2010, 2:03 pm
Re: Reinforcing a boat for a trip *PIC*
Brian -- 8/21/2010, 8:14 pm
Re: Reinforcing a boat for a trip
Mike Savage -- 8/22/2010, 6:40 am
Re: Reinforcing a boat for a trip
Bill Hamm -- 8/22/2010, 12:32 am
Re: Reinforcing a boat for a trip
Brian -- 8/21/2010, 10:14 am
Re: Reinforcing a boat for a trip
Paul G. Jacobson -- 8/21/2010, 5:00 pm
Re: Reinforcing a boat for a trip
Bill Hamm -- 8/22/2010, 12:30 am
Re: Reinforcing a boat for a trip
dave g -- 8/22/2010, 2:11 am
Re: Reinforcing a boat for a trip
Mike Savage -- 8/22/2010, 6:47 am
Re: Reinforcing a boat for a trip
dave g -- 8/22/2010, 10:00 am
Re: Reinforcing a boat for a trip *PIC*
Paul G. Jacobson -- 8/15/2010, 6:57 pm
Re: Reinforcing a boat for a trip
lc -- 8/10/2010, 4:43 pm
Re: Reinforcing a boat for a trip
dave g -- 8/22/2010, 2:07 am
Re: Reinforcing a boat for a trip
Bill Hamm -- 8/10/2010, 5:16 pm
Re: Off Topic: Reinforcing a boat for a trip
Bill Hamm -- 8/10/2010, 10:10 am
Re: Off Topic: Reinforcing a boat for a trip
lc -- 8/10/2010, 4:31 pm
Re: Off Topic: Reinforcing a boat for a trip
Bill Hamm -- 8/10/2010, 5:14 pm
Re: Off Topic: Reinforcing a boat for a trip
Brian Nystrom -- 8/10/2010, 9:57 am
Re: Off Topic: Reinforcing a boat for a trip
lc -- 8/10/2010, 4:50 pm