Shoot through hull transducer install

steveinak

Admiral
Joined
Sep 1, 2011
Posts
5,069
Likes
2,527
Location
Piker Central
Boat Make
31 BHM
I'm installing a M-260 shoot through the hull ducer on the boat. I can't get to the spot i want it to go without cutting up my deck so i'm going to mount it in a temporary spot until next season when i'm going to cut in a rope locker and will be able to get to the spot i want to mount it in. So do i use a good grade of silicone to make the seal for the tank or should i use something like 42 or 5200? I know if i use 5200 what a PITA it will be to try and get it loose but i don't want the tank to leak either.
 

steveinak

Admiral
Joined
Sep 1, 2011
Posts
5,069
Likes
2,527
Location
Piker Central
Boat Make
31 BHM
Thanks Travis. OK now on to problem #2, boat isn't sitting level(side to side) ducer tank needs to be cut so it sits level/square with bottom of boat so do i just scribe a line on the tank using a piece of 1/2 0r 3/4" plywood for the guide or do i have to use a level to get the tank sitting level and then scribe the line on the tank bottom?? It doesn't look to off by much but trying to see bottom at 100 fathoms every degree off will add up. I'm a dumb shit when it comes to figuring out angles and how to scribe them.
 

F/V First Team

Admiral
Joined
Jan 10, 2012
Posts
6,146
Likes
2,466
Location
Narnia
Website
www.otisenterprisesmarine.com
Boat Make
Northern Bay 36 - Modified
just grab yourself a pair of dividers and have at it. check to see how your vessel is sitting on the trailer or where you have it, look to see where the bubble is in your level and duplicate it with your box. scribe to fit. anything can be used so long as it is parallel and doesnt change on the different sides
 

steveinak

Admiral
Joined
Sep 1, 2011
Posts
5,069
Likes
2,527
Location
Piker Central
Boat Make
31 BHM
Alright here's what i did today & i'm waiting for any replies before i cut the tank

Leveled up the boat on the trailer side to side, checked the level on the deck in a few spots and they all were very close so i'm thinking good enough
P5100427.jpg

clamped a level to the transducer tank leveled up the bubble and scribed my line for the cut so this should give me a squared up transducer, right???
P5100423.jpg

P5100427.jpg

P5100423.jpg
 

steveinak

Admiral
Joined
Sep 1, 2011
Posts
5,069
Likes
2,527
Location
Piker Central
Boat Make
31 BHM
Correct

Easy right?
Yeah with your help, thanks Travis. Now on to the cutting of the tank, mark it all around and trim with a jigsaw?? Should i try and set the angle of the cut to lay flush with the hull? or just let the sealant make up the difference??
 

F/V First Team

Admiral
Joined
Jan 10, 2012
Posts
6,146
Likes
2,466
Location
Narnia
Website
www.otisenterprisesmarine.com
Boat Make
Northern Bay 36 - Modified
A hack saw works pretty good on the ends for starting your cut, then just follow it with the jig saw, or if you're handy with a grinder cut it square and bevel it that way. A belt sander works well too.
 

steveinak

Admiral
Joined
Sep 1, 2011
Posts
5,069
Likes
2,527
Location
Piker Central
Boat Make
31 BHM
A hack saw works pretty good on the ends for starting your cut, then just follow it with the jig saw, or if you're handy with a grinder cut it square and bevel it that way. A belt sander works well too.
Ok i've got a good sized belt sander, that sounds like i can do the least damage if i'm off a bit on the angle. I was thinking bandsaw if i set up a good jig to hold the angle but sanding off a little bit at a time is a better idea.
 

steveinak

Admiral
Joined
Sep 1, 2011
Posts
5,069
Likes
2,527
Location
Piker Central
Boat Make
31 BHM
Luckily your area looks pretty straight forward and reasonably flat with no compounding angles. Belt sander should work out just fine.

yup thats what i think i'll use, thanks again for all the advise, remember if your ever up this way i owe ya some fishing time.
 

FVSD

Lieutenant Commander
Joined
Nov 5, 2011
Posts
244
Likes
67
Location
Biddeford, Maine
another way to get the angle right is to just flip the box over and draw a straight line using the level.
 
Top Bottom