Aluminium I-Beams on Dingy deck

[TommyB]

Are these Aluminium I-Beams on Dingy deck Factory or installed at some other point in time
They seem a little over kill for a dingy, unless at one time there was something else installed up here
they run the entire length and then the side pieces at the aft are welded to the long pieces.

Then another piece attached at the aft end to increase the length / height so dingy motor does not hit deck
Wondering if I can pull all this junk off. Probably 4/500lbs of I beam up here

 

[luckydave215]

If that really is aluminum it probably weighs less than 50 pounds for the whole assembly.

 

[TommyB]

If that really is aluminum it probably weighs less than 50 pounds for the whole assembly.

I'll find out 2morrow when I start redoing top deck.
Any idea as to why it's up there like that. Spread the load?

 

[MarioG]

Looks like someone wanted to spread the load. Way overkill. BUT, if you plan on putting a good size tender up there, keep in mind that unless there are supports of some kind ie: support polls below, you might cause the dinghy deck to flex or sag. Which may explain why you have all of that metal up there.

 

[Artzco]

I have the same roof deck and my dinghy mounts are bolted to the surface. i have a 12' Avon with 40hp and with all that weight, there is no sign of sagging or flexing after all the years. I looked at a number of these 52 CPMYs and they all had the chocks mounted same as mine. I attached a couple of pictures of mine. I would check closely since there may have been a problem that was being solved with those I beams or they were trying to extend the dinghy mounting area further back.

 

[TommyB]

I have the same roof deck and my dinghy mounts are bolted to the surface. i have a 12' Avon with 40hp and with all that weight, there is no sign of sagging or flexing after all the years. I looked at a number of these 52 CPMYs and they all had the chocks mounted same as mine. I attached a couple of pictures of mine. I would check closely since there may have been a problem that was being solved with those I beams or they were trying to extend the dinghy mounting area further back.

You may be right, looks like they moved the dingy way aft, and also noticed that there are some flat looking nylon bushing things on the rails also. They are about 12" long or so forward of the dingy chock, wonder if they had a jet ski or something else heavy mounted up here.

 

[TommyB]

Removed that rail to rebed it. Man what a mess.
Seems that it was stuck down to bare fiberglass with some type of what appears to be some form of rubberized gunk. Some of it was still flexable but most had turned rock hard.
Took a grinder to get it off.
Some of it was razor thin, and other places it was 3/4" thick



Wish I could figure out what this rubber junk is


While up there, decided to fix a spongy place in the deck


and the reason there is those long places of bear fiberglass, someone gut the entire length of that rail, and bedded long strips of backing plate.
1/4 alum runs the entire length and breath of this beast of a cradle

Guess that way, they could put through bolts into that plate anywhere. just drill and tap it

 

[TommyB]

New cell core added and glassed back in.
All that rubber what-ever crap has been ground / fien tool off.
New glass laid over the that old simi wetted out old glass. Off course after grinding it away to get to good glass

 

[jim rosenthal]

Nice work, but a shame you had to go to all that trouble.

 

[TommyB]

Slowly getting there.
Bottom of rail was stripped and I used this 2 part epoxy based protector on it
http://www.alexseal.com/exterior/protective-primers/cor-spec-primer-135

Still working on getting it patched and fair to my liking. Some low spots and such, but don't think anything on a boat is level so not going to fill it in with fairing compound.
Once I get paint / primer / non-skid on it, no one will notice but me,
Deck is big up there, it's like 14x20 or some such wasted space.

 

[TommyB]

some good weather, so made some process

 

[TommyB]

be real glad to get it back together.

looks funny without arch and canvas

 

[TommyB]

in case your wondering what happened to the chock / big arsed aluminum rail thing
fit perfect in the fly bridge