Lowrance Structure Scan and Transducer

[tom_20000]

Hi guys, I've read a few threads on the forum but they seem to be specific to inboards. I have a lss-2 transducer and a standard transducer to mount on the transom. Does any one have any experience on best positioning?

I understand they're better mounted on the starboard side but I have drain trunk there. Port side I have a sliding jack plate I could use but I believe the transducers need to be 1ft apart, and i believe it may be a little flimsy to use the plate with a 1ft spreader bar. Anyone got any experience or advice please?

Cheers tom

[jeffstevens763@g]

here you go Tom

cheers

[tom_20000]

Thanks Jeff, do we think the drain trunk will provide too much interference?

[jeffstevens763@g]

never did on mine tom cheers

[diver 1]

I'd put it on the SB side to the RHS of the elephants trunk centred below the flat part of the chine rail if that makes sense.

I've the same unit and done this on my RC 585 which appears to have similar hull to yours (without elephants trunk) works fine.

May I add that I simply stuck my transducers on with 3M VHB sticky pads - I have 3 transducers - Lowrance, Raymarine and Garmin all within a few inches of each other.

I was told I would get loads of interference and none of them would function properly, also I didn't want to drill loads of holes in my transom whilst trying to find optimum position.

I cleaned the transom with Acetone, lightly abraded the transducer mounting surfaces with wet and dry then acetone to remove any grease or slime, then stuck them on with the VHB pads. Bearing in mind the transucers are very large - especially the Raymarine one and the rib has been at sea (airbourne) in very rough conditions, and deliberately been run onto sandy beaches etc amazingly after 600 miles all 3 transducers are still solid and sticky pads are holding.

I don't get any interference and amazingly all 3 worked perfectly in most conditions from the start so no need to change positions.

If you do need to move them just warm up the sticky pad by pouring boiling water over it and they peel off leaving no residue or damage to the transom.

Sorry dont have any pics

[jeffstevens763@g]

pic of mine Tom i had two one shoot through in the bilge sump and this one for my side scan.hope that helps

cheers

[diver 1]

6 IN 1 Mounts 3M VHB Adhesive Sticky Sticker Pads for GoPro Go Pro UK STOCK C1H1 | eBay

These things cut to size, although I now note you can buy A4 sheets of this stuff and cut to whatever size you want using scissors. Its very strong bond

[tom_20000]

Cheers guys, i will be mounting them tomorrow hopefully.

@diver 1 - did you mount yours to the transom of flat against the hull? I have the Lss-2 and a downscan transducer also.

[jonp]

Mine is fixed directly to the bottom of the boat ( no bracket used) then in Lowrance menu the left right function needs to be flipped. This position gives the cleanest image of both sides and is recommended by Lowrance tec fishing team.

I've run sidescan this way on my last three boats without any problems.

Not so good if you regularly beach a boat but neither are brackets with transducers.

Jon

[tom_20000]

Originally Posted by jonp

Mine is fixed directly to the bottom of the boat ( no bracket used) then in Lowrance menu the left right function is flipped. This position gives the cleanest image of both sides and is recomended by Lowrance tec fishing team.

Not so good if you regularly beach a boat but neither are brackets with transducers.

Jon

Wondered how you coped with the axis been flipped, makes sense now. Will have to see how that position interferes with the trailer.

Cheers!

[diver 1]

Mine are mounted on the transom using sticky pads.

Another method to first check correct position is to screw the transducer to a long piece of 1" square timber and clamp this to the top of the transom using G clamp(s) so that the transducer is positioned where you think it should work. Test it and if it doesn't read well keep adjusting it by loosening the G clamp and moving slight increments until you get a good reading at all speeds.

Then (at home) mark the position. Remove timber, drill and fit as per normal.

As for me I think I'll carry on with the sticky pads for now. I'm liking the idea of 8 less holes in my transom.

[tom_20000]

Mounted up this weekend and took the boat out on Sunday, unfortunately didn't get chance to check the plotter before the engine had an issue. Seems where i've mounted the LSS-2 though may need changing, it was creating a huge 2m high spray of the SB side when on plane :-/, looked like a jetski lol

[Chris]

Tom, bear in mind you would normally use structure scan at displacement speeds so you can happily mount it so it is above the bottom of the transom.

[jeffstevens763@g]

Tom

If you have set it per instructions it should be ok if it's dipping down you will get spray just make sure it's level if it's below the hull it's on a kick up bracket so will clear the hull if you run around. As Chris says you will use at 3-6 mph for good scan results and will return depth at speed.

Cheers

[jonp]

I had the same issue which drove spray at the engine intakes. You can either fix to the underneath of the hull or make ( or buy ) a spray cover to fix over the top of the transducer.

Ive made a few out of an old leaking plastic fuel can. This was how I had before fixing it directly to the boat, which gave a much cleaner image of both sides of the boat.

Jon

[tom_20000]

May try mounting it directly to the hull. Im taking the boat down to Cornwall this weekend for a week so will try and have a fettle while im down there :-D

[Johnscubanut]

Bonded our transducer into the splaswell, works very well!

[Johnscubanut]

I did mean splashwell! lol

[Last Tango]

Originally Posted by jonp

I had the same issue which drove spray at the engine intakes. You can either fix to the underneath of the hull or make ( or buy ) a spray cover to fix over the top of the transducer.

Ive made a few out of an old leaking plastic fuel can. This was how I had before fixing it directly to the boat, which gave a much cleaner image of both sides of the boat.

Cool solution

I'm just thinking something a bit more solid to stop the wean standing on the transducer climbing into the boat

[Nos4r2]

Originally Posted by Johnscubanut

Bonded our transducer into the splaswell, works very well!

An LSS-2 transducer?