transducer question

Post by **fish on!!** » March 7th, 2006, 3:56 pm

I have a transom-mounted transducer for my depth finder. Whenever the boat is on plane the depth readings go crazy. Giving depths of 500-1000 ft. I know that these depths arent likely in the lighthouse area. I am pretty sure that the interference is caused by water passing over the welds on the bottom of the boat. I have tried to adjust the positioning of the transducer but it doesnt work. Any ideas of how to get around this problem?

Post by **Fighting Conch** » March 7th, 2006, 4:10 pm

I get the same problem on my 13 foot whaler - once I come up to speed the depth finder wipes out. I've moved the transducer around but apparently the cavitation is too much.

Post by **snook** » March 7th, 2006, 4:34 pm

you may want to think about epoxying it in a clean place inside your bilge, you may loose a little of your sensitivity but it wont quit reading... i positioned my transducer in my castnet boat in this fashion eliminating the snag situation and still had plenty of sensitivity to locate those big ol blacks of mullet. just a thought.

Post by **tin can** » March 7th, 2006, 5:55 pm

Most transducers won't shoot through an aluminum hull.

The bottom surface of the transducer should be located away from any strakes or steps, 1/8" below the bottom of the hull, with the trailing edge of the transducer 1/8" to 1/4" lower than the leading edge.