Lag Bolts of Mass Destruction

[guyrj33]

I don't think those lag bolts are Stainless, they look more like galvanized steel to me.

[maxingout]

Originally Posted by stnick

i sure would want to know why the stringers were damp .Im a replace the stringer guy ! take no chances at sea !
Put a deflated basket ball under the engine and blow it up ! when it rises remove the mount and saws-all the stringer out replace and reglass with Roving and mat paint white and re install the mount. May have to move the basket ball 4 times . But sure does the job !

I like the basket ball idea!

[Cpt Pat]

Originally Posted by Jim Cate

Hi Dave,

At any rate, you have now identified one non-arguable advantage of cats over monos!!

...Unless the cat capsizes, then the engine is as much a loose canon as in a monohull, and hopefully there'd be no one in its way as it plummets toward nadir.

Granted, in a cat, a capsize at sea is often an "end of life" event for a cat, so the engine crashing through the cabin would only be one on a long list of irresolvable problems. You're SOL regardless.

There is more roll in a cat when it takes large swells abeam due to the lack of ballast, there is just as much sideways sway-force in a seaway in a cat as in a mono, and as much or more yaw force as the hulls alternately slam into swells and the boat yaws - unrestrained by the lack of a deep keel. All three forces would try to toss the engine sideways. The consequences of having the engine slide sideways off its mounts would still not be good.

Has anyone considered substituting with titanium bolts? They're expensive, but you don't need many of them. Titanium is as close as you can come to corrosion-proof "unobtainium."

[billknny]

Originally Posted by stnick

i sure would want to know why the stringers were damp .Im a replace the stringer guy ! take no chances at sea !
Put a deflated basket ball under the engine and blow it up ! when it rises remove the mount and saws-all the stringer out replace and reglass with Roving and mat paint white and re install the mount. May have to move the basket ball 4 times . But sure does the job !

Better yet, when you install the new stringers, glass them in tight, and use through bolts in epoxy sealed holes to install proper galvanized steel frames to mount the motor on. Problem solved--forever.

Remember, in a properly designed stringer, the wood is there as a mold for the glass which is what actually supplies the strength. The wood could rot away, and the integrity of the hull doesn't change. Instead of wood you can make a fine stringer with a cardboard tube. Of course there is nothing left for the lag screws....

[a64pilot]

I don’t have lag screws, my stringers are solid glass, with nut plates, so machine bolts are used.
I don’t like lag screws holding an engine, although the bolts holding my mast base in are lag screws, screwed into solid glass though, no wood.

If I were to replace stringers, I don’t think I would go back with wood.
I’d build them up outside of the boat, and glass them in.
Boat load of work though.

[Quadrille in JB]

Originally Posted by maxingout

Refit complete finally.

We had to delay our departure because I had some surgical adventures. The refit on my body is nearly complete. Hopefully!

Dave,
I was wondering where you were on this adventure. Are you still in FP? Hopefully you are recovering well.
I’m the guy with the 34’ O’Day who helped you procure your Sunpower PV panel.
Bill

[JPA Cate]

Originally Posted by maxingout

Interesting. Do you have pictures of the shackle arrangement?

Sorry, Dave, no pictures. What it is is a piece of 7 x 7 wire, hand swaged in a circle over the top of each mount, around the bed member and back to itself.

Ann

[maxingout]

Originally Posted by Quadrille in JB

Dave,
I was wondering where you were on this adventure. Are you still in FP? Hopefully you are recovering well.
I’m the guy with the 34’ O’Day who helped you procure your Sunpower PV panel.
Bill

I am on the mend after 3 surgical adventures. Sometimes you have to get a refit on your body and on your boat at about the same time.

We plan to set sail after hurricane season is over.

We are hauled out at FP and the solar panel is great.

[maxingout]

Originally Posted by JPA Cate

Sorry, Dave, no pictures. What it is is a piece of 7 x 7 wire, hand swaged in a circle over the top of each mount, around the bed member and back to itself.

Ann

Thank for the description. I like having multiple options to. Solve problems.