Mounting depth finder transducer. - SailNet Community

   Search Sailnet:

 forums  store  


Quick Menu
Forums           
Articles          
Galleries        
Boat Reviews  
Classifieds     
Search SailNet 
Boat Search (new)

Shop the
SailNet Store
Anchor Locker
Boatbuilding & Repair
Charts
Clothing
Electrical
Electronics
Engine
Hatches and Portlights
Interior And Galley
Maintenance
Marine Electronics
Navigation
Other Items
Plumbing and Pumps
Rigging
Safety
Sailing Hardware
Trailer & Watersports
Clearance Items

Advertise Here






Go Back   SailNet Community > On Board > Gear & Maintenance
 Not a Member? 
  #1  
Old 04-16-2010
davidpm's Avatar
Senior Member
 
Join Date: Oct 2007
Location: Madison
Posts: 3,621
Thanks: 159
Thanked 35 Times in 28 Posts
Rep Power: 7
davidpm is on a distinguished road
Mounting depth finder transducer.

The manual says it has to be mounted within 10 percent vertical. The bottom of the hull has no accessible part that is shaped that way.

The old transducer was set in a 5" square wedge shape of wood mounted on the outside of the hull, very ugly.

My thought is to remove the wood, wrap the new transducer with plastic and hold in place temporarily in the proper orientation even if it is not flat on the hull and mix up some thick epoxy and fill in the space making a large wedge shaped washer of epoxy.

I donn't like the idea that it is sticking below the bottom of the boat and could be sheered off if grounded just right but it does have to be mounted vertically.

Any other ideas besides an interior mount in that special goop.
Reply With Quote Share with Facebook
  #2  
Old 04-16-2010
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 9 Times in 9 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
That's actually not a bad way to do it. A block of PVC cut to fit the hull would work too. You could also mount the transducer inside the boat, provided the boat has a solid fiberglass (not-cored) hull. This has the added benefit of avoiding drilling a hole in the boat's bottom.

To check, use a plastic baggie filled with water and try the transducer in various spots on the hull in the bilge. Once you find a spot that gives a clear signal... glass a 4" PVC tube into the spot and put a cleanout fitting on it... add the transducer to the cleanout cap and fill with mineral oil.
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook
  #3  
Old 04-16-2010
Senior Member
 
Join Date: Jul 2008
Location: chesapeake bay
Posts: 1,942
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
scottyt is on a distinguished road
go get a piece of 4 inch pvc, take it to the boat, cut it off at an angle to match the hull. epoxy the pvc to the hull inside, then get a pvc cap that fits the pipe. mount the trasducer to the cap so it sticks down as far as you can get it. or drop it in the pipe. then fill the pipe with mineral oil and put the cap on, then tape it on with rescue tape. the nice thing about mounting it to the cap is sealing the tranducer to the cap with a "nut" on each side is easy. or you have to run the wire to the ducer thru the cap and seal it some how.

this will work if you have a solid hull, as not cored

btw the "nut" is blue

Reply With Quote Share with Facebook
  #4  
Old 04-16-2010
Senior Member
 
Join Date: Jul 2008
Location: chesapeake bay
Posts: 1,942
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
scottyt is on a distinguished road
da.m my ms paint job took too long and SD stole my thunder
Reply With Quote Share with Facebook
  #5  
Old 04-16-2010
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 9 Times in 9 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
You snooze...
Quote:
Originally Posted by scottyt View Post
da.m my ms paint job took too long and SD stole my thunder
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook
  #6  
Old 04-16-2010
Member
 
Join Date: Aug 2008
Location: Arkansas
Posts: 73
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 6
MikeAR is on a distinguished road
I've read of others effectively using plumber's bees wax, molded and placed inside the hull forward of the keel .... and the transducer is pushed into that. I was thinking of doing that eventually.
Reply With Quote Share with Facebook
  #7  
Old 04-17-2010
Barking Dog
 
Join Date: Nov 2005
Location: Boston
Posts: 236
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
KindOfBlue is on a distinguished road
Quote:
Originally Posted by sailingdog View Post
To check, use a plastic baggie filled with water and try the transducer in various spots on the hull in the bilge. Once you find a spot that gives a clear signal... glass a 4" PVC tube into the spot and put a cleanout fitting on it... add the transducer to the cleanout cap and fill with mineral oil.
Can you explain what to do with the baggie again? Does the transducer need to be wet to work? Also what does the mineral oil do?

EDIT - never mind. I just googled "transducer mineral oil" and found out why you use it.
__________________
Craig

Last edited by KindOfBlue; 04-17-2010 at 04:49 AM.
Reply With Quote Share with Facebook
  #8  
Old 04-17-2010
sailingdog's Avatar
Telstar 28
 
Join Date: Mar 2006
Location: New England
Posts: 43,291
Thanks: 0
Thanked 9 Times in 9 Posts
Rep Power: 13
sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice sailingdog is just really nice
The reason you want to test the hull with the transducer and baggie is to find a spot where the hull layup is free of voids, which can cause the transducer not to read properly.
__________________
Sailingdog

To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.

Telstar 28
New England

You know what the first rule of sailing is? ...Love. You can learn all the math in the 'verse, but you take
a boat to the sea you don't love, she'll shake you off just as sure as the turning of the worlds. Love keeps
her going when she oughta fall down, tells you she's hurting 'fore she keens. Makes her a home.

—Cpt. Mal Reynolds, Serenity (edited)

If you're new to the Sailnet Forums... please read this
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
.

Still—DON'T READ THAT POST AGAIN.
Reply With Quote Share with Facebook
  #9  
Old 04-17-2010
davidpm's Avatar
Senior Member
 
Join Date: Oct 2007
Location: Madison
Posts: 3,621
Thanks: 159
Thanked 35 Times in 28 Posts
Rep Power: 7
davidpm is on a distinguished road
Quote:
Originally Posted by sailingdog View Post
To check, use a plastic baggie filled with water and try the transducer in various spots on the hull in the bilge. Once you find a spot that gives a clear signal... glass a 4" PVC tube into the spot and put a cleanout fitting on it... add the transducer to the cleanout cap and fill with mineral oil.

Good tip to make sure a good spot is selected. I doubt if their is anyway to do this if the boat is on stands though.
Reply With Quote Share with Facebook
  #10  
Old 04-17-2010
Barking Dog
 
Join Date: Nov 2005
Location: Boston
Posts: 236
Thanks: 0
Thanked 0 Times in 0 Posts
Rep Power: 9
KindOfBlue is on a distinguished road
Just checking. This method with the PVC and mineral oil is to mount a through hull transducer without going through the hull?
__________________
Craig
Reply With Quote Share with Facebook
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools

 
Posting Rules
You may post new threads
You may post replies
You may post attachments
You may edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Depth Gauge or Fish Finder... krozet Gear & Maintenance 6 03-12-2010 10:53 PM
Depth finder question?? gwp Gear & Maintenance 10 01-12-2009 06:32 PM
What type depth finder do you have? gwp Gear & Maintenance 11 10-25-2003 11:04 AM
Installing Depth Finders Tom Wood Gear and Maintenance Articles 0 03-01-2002 07:00 PM
Depth Finder Problems gcall Gear & Maintenance 1 09-06-2001 03:38 PM


All times are GMT -4. The time now is 10:22 AM.

Add to My Yahoo!         
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
SEO by vBSEO 3.6.1
(c) Marine.com LLC 2000-2012