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Losing return @ 30kts.

Old 07-21-2013, 05:40 AM
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Default Losing return @ 30kts.

I'm running a 27' Contender with a pocket mounted transducer to a Furuno 585. Speeds above 30kts cause me to lose any bottom return. Will the flush mounted SS264 transducers do any better? Also, I fish a lot of wrecks in the 200-300ft range. Does the 20 degree tilt element work okay with a 24 degree deadrise in deep water.
Old 07-21-2013, 05:48 AM
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Which transducer do you have today?

If you have TM260 this can, as other transom mounts, be a bit difficult to position optimally. SS264 and the other tilted element transducers will at most boots give excellent performance at all speeds if they are installed correctly.

20 degrees tilted element is for 16 to 24 degrees deadrise, so SS264-20 will work fine.
Old 07-21-2013, 06:35 AM
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My current transducer is a pocket mounted older 600W Airmar. Works okay. Looking to upgrade and get returns above 30kts if possible.
Old 07-22-2013, 03:52 AM
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youre going to have a tough time getting it to read at 30 knots consistently especially in deeper water. if you tweak it a little as youre running you can probably get it to read better like turn the gains up or the frequency. My chirp ducer will read bottom up to 27 knots in several thousand feet but if i go much faster will go in and out. you just start to create too much air going over the face at those higher speeds especially if its choppy at all.
Old 07-22-2013, 06:01 AM
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Thanks Bradv. I called Gil from Semperfishing and he really cleared up a lot of misconceptions I had about using my FCV585 and how to get the most out of it. I guess I could have read the manual closer about editing the screen but it was easier calling Gil.

Gil setup a friend's boat with flush mount Airmar's. We both have the same boat but after running a day with him, his 585 screen was much clearer and the returns were a lot better at high speed. I never fished on his boat before but I did checkout his setup at the dock last year. It wasn't until I fished with him for the day offshore that I really saw the difference these transducers made.

Although a bit pricey, I'm going to switch to the Airmar SS264N pair. If they work on my boat as nice as I just got to see his FCV585 coupled with these transducers on his boat, I will be a happy fisherman.

Unfortunately however, my wife will not let me fish on his boat anymore.
Old 07-23-2013, 04:14 AM
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You are likely getting air under the transducer. Water gets directed various ways under a boat from lifting strakes, steps, etc. Air gets mixed into this water and sounders don't like air. Figure out whether you are getting clean water flows with no air crossing your transducer face when running at speed. If any air whatsoever is mixed in, you have to install the transducer in an area where it will get a clean laminar flow of water.
Old 12-09-2013, 09:03 PM
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Picked up on this in response to something niggling me in the back of my head.

Am looking at installing a pair of SS264s on a 24 deg deadrise boat - 25 foot.

On and off trailer so B260 / B270 no good.

Given that the elements are tilted at 20 deg and it is a 24 deg deadrise hull does that mean it will be shooting off to the side to some degree and is there any way this can be compensated for without major work on installation ?

Steve
Old 12-09-2013, 09:26 PM
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Originally Posted by igfafly View Post
Picked up on this in response to something niggling me in the back of my head.

Am looking at installing a pair of SS264s on a 24 deg deadrise boat - 25 foot.

On and off trailer so B260 / B270 no good.

Given that the elements are tilted at 20 deg and it is a 24 deg deadrise hull does that mean it will be shooting off to the side to some degree and is there any way this can be compensated for without major work on installation ?

Steve
Yes, it will be 4 degrees off and shoot at that angle. This is not going to be a problem worth worrying about though. The tilted element if installed properly will give you excellent performance even with 4 degrees offset.

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