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Monday, 21 May 2012 00:00

Lowrance Transducer Scupper Mount

Written by  Darrell Olson
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(18 votes)

Lowrance has introduced to the kayak fishing community what should be considered the ultimate transducer mounting system for sit-on-top fishing kayaks. With the “Transducer Kayak Scupper Mount” the transducer is totally submerged in the water. This guarantees maximum sonar signal return sensitivity, producing the absolute clearest underwater returns of structure and fish possible.

According to Lowrance, this transducer mounting system works with any Lowrance HDS, Elite, Elite DSI, Mark, Mark DSI and X-Series fishfinders. It fits all Lowrance 200 kHz and Downscan ImagingTM  Skimmer® transducers.

The mounting system is compatible with the following scupper dimensions:
•    Circumference: 1” to 1.5” (2.4 to 3.8 cm)
•    Depth: 1.5” – 9.25”(4 – 23.5 cm)

My problem with this mounting system was using the scupper holes of the Jackson Cuda. The depth of the holes was not the problem, but the shape was. The scuppers of the Cuda are approximately 1.25” X 2”,which does not fit the compatibility descriptions . The deep channels on the bottom of the Cuda would also allow the transducer to be mounted below the curvature of the Cuda hull, providing protection for the unit.

So, I had to figure out a solution, which is actually pretty simple for any Cuda. My answer was to obtain a 2” flat washer with a 1” opening, and about 2” of a  pool noodle (~2.38” diameter). Add the washer to the bottom plastic part that sits on the top of the assembly. The purpose of the washer is to re-enforce this part when tightening the mounting system together. Without the washer this plastic part will just bend. Then the finished cover will not clip to this part.

Now take the 2” piece of the noodle, and carve the approximate shape of the scupper hole. This will be added to the assembly just above the foam circle. Run the transducer wires through the pool noodle.

Pool Noodle

Washer  Top Part


Now all you have to do with these additional parts in place is to follow the very simple instructions that Lowrance provides with this product.

finished top view 1030

completed transducer 1029

About the Author: Darrell Olson is an avid Hunter / Fisherman. While living in England he was recognized as the 1981 Master Angler from the Rod & Gun Clubs of Europe.

Read 19110 times Last modified on Sunday, 20 May 2012 20:10


# striperyak 2012-05-21 14:49
This is an awesome product. I have one installed on my WS Tarpon 120 for my Lowrance Elite 4. Two Thumbs Up!!!!
# scarri3r 2012-10-28 20:33
striperyak .. I'm about to purchase this scupper mount for my Tarpon 140. Does it make a differerence which scupper hole to use ? I need my 2 rear scuppers for drainage with my live bait well. I was thinking of using the Tallon Elite Socket to mount my GPS. I'm a little confused on how the transducer connects to the GPS . I don't see any wires on the video that shows how to install the scupper mount. Any advice you have is welcomed. Thanks!
# scyakangler 2012-07-04 13:58
I have the Urban Camo Jackson Cuda. Can you provide pics of your setup? In particular, the Fishfinder setup.I have the Lowrance Elite 4 DSI and need to figure out the battery and FF configuration.
# capthowe 2012-09-07 19:03
Thanks for the great description of mounting the transducer for a mark 4 lowrance with the Lowrance kit. I have tried many other options and none were as good as this one. I am installing mine in the morning.

Thanks againfor your idea
# capthowe 2012-09-09 12:21
I installed the scupper yesterday and found that I have to trim the sides where the nut and bolt attaches the transducer to the mount and buy a shorter bolt to make it fit up into the scupper hole tight. I am awaiting for my new transducer from Lowrance as the first on read 60 ft at the shallow end of my pool and 26.4 feet at the deep end of the pool. My pool depths range from 3.0 feet to 6.5 feet. Their customer service is not what it used to be when I used to test products for them.
# mdelprin 2013-02-27 13:30
Would this product work with any brand of transducer? I have a Humminbird PiranhaMax 180 and a transducer that looks a lot like one of the one you have pictured. It looks like it would be a much easier solution than what I was planning to build for my JK Cuda 12. I especially like the top cap that protects the bend in the wire as it drops down into the scupper and prevents it from getting pinched.
# Yak Chum 2013-11-12 10:48
Or you could make your own!

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