Steve;
I would look into the reason you have too keep "snugging them", and
there's reason to look at the burried nuts. Sounds like a plywood core
that's rotten.

Backing plates won't help if the center is soft.

Jim

sel1 wrote:
Hi all,

I want to put on backing plates for all the stuff attached to the transom
(exhaust ports, swim platform, steering arms etc). Through continually
snugging them, the previous owner has burried a couple of nuts through the
glass! I am really new to all this but the first thing that comes to mind is
reaction between two metals. If I use stainless bolts, could I use aluminum
for backing plates or maybe I should use something else, or maybe I
shouldn't do this at all?

Still asking and not able to answer much yet.

Thanks, Steve

On Sun, 12 Dec 2004 03:54:43 +0000, Jim wrote:

[moved top-post down below OP]

sel1 wrote:
Hi all,

I want to put on backing plates for all the stuff attached to the transom
(exhaust ports, swim platform, steering arms etc). Through continually
snugging them, the previous owner has burried a couple of nuts through the
glass! I am really new to all this but the first thing that comes to mind is
reaction between two metals. If I use stainless bolts, could I use aluminum
for backing plates or maybe I should use something else, or maybe I
shouldn't do this at all?

Still asking and not able to answer much yet.

Thanks, Steve



Steve;
I would look into the reason you have too keep "snugging them", and
there's reason to look at the burried nuts. Sounds like a plywood core
that's rotten.

Backing plates won't help if the center is soft.

Jim


This is good advice. But to answer one of the original questions, I
don't think there is any problem with corrosion between aluminum
backing plates and stainless hardware. For one thing, you will be
putting some kind of sealant in the hole, and this sealant will
probably end up mostly insulating the aluminum from the stainless.
And for another thing, it will take a long time (20 years?) for there to
be enough corrosion on a 0.125" backing plate to worry about.

--Mac

On Sun, 12 Dec 2004 03:54:43 GMT, Jim vaguely
proposed a theory
.......and in reply I say!:

remove ns from my header address to reply via email



I would look into the reason you have too keep "snugging them", and
there's reason to look at the burried nuts. Sounds like a plywood core
that's rotten.

Or maybe a bad design that has a foam core with not even "pads"
between the glass where there are pressure plates.

Backing plates won't help if the center is soft.

Which can apply with foam. Same problem occurs. It's best to have
solid "pads" at pressure points, even with backing plates on top.
---
Only worry about the things you can control.

Then you have stuff all to worry about!

Top posting versus bottom posting, let me explain, scroll down:

Old Nick wrote:
On Sun, 12 Dec 2004 03:54:43 GMT, Jim vaguely
proposed a theory
......and in reply I say!:

remove ns from my header address to reply via email




I would look into the reason you have too keep "snugging them", and
there's reason to look at the burried nuts. Sounds like a plywood core
that's rotten.


Or maybe a bad design that has a foam core with not even "pads"
between the glass where there are pressure plates.


Backing plates won't help if the center is soft.


Which can apply with foam. Same problem occurs. It's best to have
solid "pads" at pressure points, even with backing plates on top.
---
Only worry about the things you can control.

Then you have stuff all to worry about!

There, see? You has to scroll down to read what you could have read
without moving your cursor and scrolling.

I don't know why you said "vaguely
proposed a theory . . ."

Saying to check the reason for the loose bolts isn't exactly vague. I
know about how today's powerboats are made, and I'll bet he's got some
rot in a piece of structural plywood.

If that's the case, backing plates will not fix it.
Jim

On Sun, 12 Dec 2004 18:10:49 GMT, Jim vaguely
proposed a theory
.......and in reply I say!:

remove ns from my header address to reply via email

Top posting versus bottom posting, let me explain, scroll down:

Old Nick wrote:
On Sun, 12 Dec 2004 03:54:43 GMT, Jim vaguely
proposed a theory
......and in reply I say!:

remove ns from my header address to reply via email




I would look into the reason you have too keep "snugging them", and
there's reason to look at the burried nuts. Sounds like a plywood core
that's rotten.


Or maybe a bad design that has a foam core with not even "pads"
between the glass where there are pressure plates.


Backing plates won't help if the center is soft.


Which can apply with foam. Same problem occurs. It's best to have
solid "pads" at pressure points, even with backing plates on top.
---
Only worry about the things you can control.

Then you have stuff all to worry about!

There, see? You has to scroll down to read what you could have read
without moving your cursor and scrolling.

So are you arguing for top or bottome posting?

If you had top posted and I had half a brain and had followed the
thread, I could have read your reply without having to scroll. And if
you had trested the post _correctly_ and removed half the crap from
previous posts before you started your bitching, then I would not have
had to scroll.


I don't know why you said "vaguely
proposed a theory . . ."


You tell me how to run the Web, then take exception to a stock joke
headline?


Saying to check the reason for the loose bolts isn't exactly vague. I
know about how today's powerboats are made, and I'll bet he's got some
rot in a piece of structural plywood.

If that's the case, backing plates will not fix it.

No. And I agreed. Sheeeeesh! Bad hair day guy!
---
Only worry about the things you can control.

Then you have stuff all to worry about!

On Sun, 12 Dec 2004 18:10:49 GMT, Jim vaguely
proposed a theory
.......and in reply I say!:

remove ns from my header address to reply via email

_Partial_ understanding of your post. I did not bottom post. You
should not have had to scroll to read what I had to say. If you did
them sort out your news reader. I extracted what I thought was cogent
and interleaved my comments. I do this sometimes, and top post mostly,
also often removing a lot of the previous material.

I believe that bottom posting is the "correct" way anyway, although I
disagree with it.

In the end if it's done with a bit of thought it all works. Even if it
doesn't work..let it go!

Top posting versus bottom posting, let me explain, scroll down:

---
Only worry about the things you can control.

Then you have stuff all to worry about!

Some people hate top posting. I appreciate it when I don't have to
scroll through a bunch of stuff I've already read.

Don't know why they want the reply at the bottom.

But, we were talking about backing plates. . .