Thread: Humminbird 858cdi Depth Reading Problem

Make sure the screws you use to mount the transducer to the mounting board are NOT longer than the board is thick. You'll have holes in your boat that you don't want. Had a buddy went to all the trouble to mount the board then punched holes in his boat with the screws!

Originally Posted by Wiskers

Make sure the screws you use to mount the transducer to the mounting board are NOT longer than the board is thick. You'll have holes in your boat that you don't want. Had a buddy went to all the trouble to mount the board then punched holes in his boat with the screws!

Roger that

Originally Posted by KAG

Thank you so much for the input, it helps a lot.

This is just me.....I would think a world leader in fishing electronics would kind of have this worked out with transducer placement. Especially on the spendy versions of electronics. I mean I know there are many different boats but not that many truly different Hull designs.......

I am just going to let the boat sit until the mounting plate gets here on Wed and then I will move it farther down towards the live well fill screen. I will seriously look at doubling up the mounting plate.

I wonder if some of the synthetic decking boards would work for a mounting plate if was cut down???....I mean its water proof and synthetic composite. You can get a long piece of 5/4 material for what a small mounting plate costs.

Maybe a sticky needs to be made of just correct transom mounted transducer placement photos with boat make, model, and electronics.

Like this:

Lund 2012
1825 Explorer
Deep V Aluminum
Humminbird 858CDI

...............just a thought

Good idea KAG. Maybe you can get the site Admin to set this up. The closest I have seen to this are the installation photos on the UnOfficial Humminbird Side Imaging Group web site.

There are not that many different main hull designs but there are many different variations within each. Example: Aluminum deep-vee hulls come in a variety of dead rise angles, some are welded, some riveted, some have lifting strakes, trim tabs, various sizes of motors, kicker motors, and on and on. Generally the best area to mount the transducer is as low and centered as possible while also not causing any water flow issues for propeller or the motor’s cooling water intake. That ‘general’ area varies quite a bit for each boat hull and even if the hulls are the same it can vary by how the boat is set up and loaded. I do wish there was a one place fits all installation location – it would sure make it easier on us as well as our Customers!

Even tho we often seem to get overwhelmed with stickies I have to agree that this is a good idea for this particular subject. If someone will make a sample post covering all important install information AND pictures of their installation I will set up the sticky. Please PM me when this is done so I will see it sooner.