Transducer Install Help

[Wayne'sWorld]

I have an '85 200 CCP with an old Hummingbird Wide 100 depthfinder on board.  My transducer is leaking badly.  Someone posted a link on the site showing the procedure to epoxy a block of wood to the inside of the hull for mounting.  I think the original post may have come from the Mako website but a search over there and a search on this site comes up zero.  Could someone repost?  Here's the problem in pictures...


Here's a shot from the top.  The wooden shim that was originally installed with the transducer to mount it perpendicular has rotted.  


Here's an angle shot on the mounting location in the hull.  The fiberglass work does not provide a smooth finish for mounting.


Previous owner shaped a wedge to match the 20 degree deadrise.  Wood is still solid but it was mounted to the hull with what looked like plumbers putty.

I'll probably deep six this depthfinder in the next year or so.  Right now I just want to mount it so it doesn't leak.  Let me know if you can help out because comments are always appreciated.  Any CCP owners can just reply to say hello.  I know you're out there!

Wayne

[GoneFission]

Cut some starboard to match the wood, seal it with 5200 caulk, and seal it down.  You could also use a through-hull transducer available from Humminbird for deep-V hulls:

http://store.humminbird.com/humminbird- ... 061-1.html

Welcome to the site - it's great to get another CCP fan!

[Wayne'sWorld]

Thanks, GF.  It's good to hear from you and I appreciate your input.  

Is there anyone else who knows of the post I am seeking?

[slippery73]

I probably wouldn't use starboard as the 5200 won't bond to it very well. Starboard is to slick for material to be glued to it. If its temporary just use a block of wood and resin it or cover it with 5200.

[Wayne'sWorld]

As I'm mulling this over, I keep thinking about the fact that I'll be wanting to take this off the boat next year.  It comes to my mind that the task is to make this watertight, yet temporary enough for the replace.  After all, the next model I buy might require a different application.

I'm going to use a combo of GF and Slippery's posts.  The temporary wooden block this remaining season, then look into one of those 20 degree hull transducers for the new unit next year.  

Thanks for listening.  It's put me on a track of thinking that I'm comfortable with!

[DOCREED]

Actually you dont NEED a thruhull transducer.
i transom mount would work just as well if properly installed.
I have a 25 CCP with a transom mount and I have a solid bottom lock at 44 knots.

[Wayne'sWorld]

I hear you Doc, but I've got a hole in the hull from the existing transducer and I might as well make use of it.  Here's how I solved the problem.  I sanded the block of wood bare.  Turns out it's a piece of teak that looks real solid.  I cleaned up the transducer so that it is all shiny brass.  I coated the piece of teak with 3M 4200 and carefully clamped it to the transducer.  Let the whole thing set up dry.

Next, I took a piece of composite deck material I had laying around, shaped it to a 20 degree wedge, scuffed the hull interior with a light sanding, wiped it down with vinegar, let dry and 4200ed the sucker to the hull (drilled hole in wedge first).  I know this material can't sit in water indefinitely, but it will do for the remainder of the season.

Final step, I coated the other side of the teak with 4200, eased it into place, had my son hold it it place then hopped in the boat and tightened the nut.  I'll be testing it out on 9/1 after most of the shoob's go home (no offense) running out of Corson's Inlet on the high tide.

One last thing, to anyone who has a CCP, you know how difficult it is to reach the hull through those stern storage covers.  I found out that you can wedge a good portion of your upper body into this access, at least one shoulder and your head.    Still, it's an armstretcher of a reach!

[compcrasher86]

I am curious how it looks. You think you could post a picture or two?

[GoneFission]

"anyone who has a CCP, you know how difficult it is to reach the hull through those stern storage covers. I found out that you can wedge a good portion of your upper body into this access, at least one shoulder and your head"  

Been there; done that!  And I got stuck one time at a weird, turned angle and it took a few minutes to figure out how to get my arm out!    

Sounds like you've got a good plan to get through the season - I bet it will last more than that if you want!  

Now, let's go fishin'!

[DOCREED]

If you are a professional basketball player wit looong arms its easy to work on CCPs

Unfortunatly I'm not.