new humminbird fish finder install

Exotic4x4

Petty Officer 2nd Class
Joined
Jul 19, 2011
Messages
118
Hi all, purchased a new humminbird 560 single beam for my Larson 170 all American, boat currently doesn't have one, so here's my question if anyone has came acrossed this before, I was thinkin about mounting my transducer in hull style vs on the back of the transom..is there disadvantages doing this?? Also according to my instructions it sounds like I have to have a different transducer if I mount it inside the boat...is thus true? Would also like to thank iboats for my new taylormade bimini top that came U P S. Yesterday :)
 

Exotic4x4

Petty Officer 2nd Class
Joined
Jul 19, 2011
Messages
118
Re: new humminbird fish finder install

Well that answers that question! That link is 10X better than my instructions on a 300$ fish finder...now the question is...how much is "minimal loss" on the in hull glue on vs screwed to transom

Anyone done this both ways?
 

Exotic4x4

Petty Officer 2nd Class
Joined
Jul 19, 2011
Messages
118
Re: new humminbird fish finder install

After reading the full directions I'm going to mount it on the transom, it says in hull mounting requires me to allow enough water in the boat to cover the transducer, I don't want ANY water in the.boat. thanks for the great link though M H Hawker
 

MH Hawker

Vice Admiral
Joined
Jul 13, 2011
Messages
5,516
Re: new humminbird fish finder install

no big thing , and from what I understand on the loss thats mostly due to air bubbles in the expoy thats used as a glue.
 

rfdfirecaptain

Petty Officer 1st Class
Joined
Aug 17, 2008
Messages
314
Re: new humminbird fish finder install

I have used the "through hull" application before, but I purchased a different transducer that Hummingbird recommends for V-bottom boats. From the top it looks like a hockey puck with an attached wire. From the side you can see that the bottom is beveled. The beveled cut is for V-bottom boats and it ensures that your transducer is pointed close to perpendicular toward the bottom. I never noticed this unit worked any better or worse than transducers I’ve had mounted in the water. According to Hummingbird the trick is to mount it correctly. “Correctly” means not only aiming it perpendicular toward the bottom, but also seating it in a nice bed of adhesive and ensuring there are no air pockets in the adhesive. Good Luck with your project.
 

UncleWillie

Captain
Joined
Oct 18, 2011
Messages
3,995
Re: new humminbird fish finder install

The operative words in the instructions are "Slow Cure Epoxy".
5 Minute Epoxy or Polyester Glass Resin are not good choices.
Use 45 Minute or 1 hour epoxy. Available at most Hobby Shops.

Sand the hull to form a good bond.
Slow Cure Epoxy is a lot thinner/runnier than the 5 minute type.
Form a dam around the area with modeling clay to prevent it running all over the place.
Mix the Epoxy slowly to avoid mixing in a lot of air.
Now pour the epoxy in the dam and it let it set for 10-15 minutes for the air bubbles to float to the surface.
Position the Transducer in the puddle, Tape it in place.
Don't touch the tape for 12 hours.
Wait 24 hours to try it out.

The water technique is a temporary trick to test the position.
 
Top