Lowrance Sidescan Transducer Installation Help!

Just acquired one of the Lowrance HDS units with sidescan. Really, really need some help with the sidescan transducer installation on a Pathfinder 2200(22’). The boat has a notched transom where the motor is inset about 9 inches, not a flat transom. On top of that, it has a stepped transom to allow shallow water running. Bottom line is if I mount the transducer on the starboard side the motor will block the cone angle. If I mount it under the step, I have to drill holes in the hull(not good in my opinion). Just wondering if there is anyone out there that has had this opportunity to screw up or do it right. Any help appreciated!!!

Ice Blue Pathfinder 2200
“Kemosabe”
<’}}}><

Take a picture of the back and bottom of your boat and post it. I just put one on my cape horn. Mine is simrad but it’s the same thing. It is really cool!

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2004 Cape Horn 31
twin yamaha 300 hpdi’s

Cape Horn 24OS Sold!
twin 150 Optimax

I don’t want to be rich,
I just want 1 dollar more than I can spend!

Brianh,thanks for the pics. The step on my boat looks similar to yours but doesn’t extend all the way across the transom. It’s sort of a notched step. I really like the way you ran the wire through the transom. Very clean…Where did you get that the hardware to seal around the wire and what size hole did you have to drill??

Ice Blue Pathfinder 2200
“Kemosabe”
<’}}}><

I had to drill a 1" hole to get the plug thru the transom. That’s why I used the “Cable Clam” to cover the hole and make it look a little better. I used 4200 silicone behind the cable clam to seal it. The cable clam isn’t really made to be used below the waterline but I used it mainly to cover up the big hole.

2004 Cape Horn 31
twin yamaha 300 hpdi’s

Cape Horn 24OS Sold!
twin 150 Optimax

I don’t want to be rich,
I just want 1 dollar more than I can spend!

Don’t ever think I’ve seen a cable clam before but I’m gonna check into it…thanks again.

Ice Blue Pathfinder 2200
“Kemosabe”
<’}}}><

brian
your install looks great, however, drilling a 1" hole below the waterline, then putting a 1/4" wire in that hole and filling with sealant is a disaster in the making.
if that sealant fails, you have a large hole in your hull. there is way to much unreinforced area between the hull and the wire for the sealant to be reliable. the cable clam is definately offering some reinforcement, but not enough for my tastes, especially on an boat built your some serious offshore conditions. I hope it works for you, but that would make me VERY nervous.

www.teamcharlestonmarine.com
www.joinrfa.org

To all, thanks for all the input, I finally got the transducer installed…first off my step is not as extreme as brianh’s so I glued 4x5 piece of 1/2" marine plastic to the vertical surface of the step with 4200. I decided not to drill through the transom so I ran the wire along the upper horizontal part of the step and up the outside of the transom and through the steering cable hole. Looks like it’s gonna work just fine. I mounted the transducer high enough so it is not in the water when on plane. Again, thanks guys!

Fishing is a perfectible art, in which never the less, no man is perfect!!</font id=“size1”>

Ice Blue Pathfinder 2200
“Kemosabe”
<’}}}><

quote:
Originally posted by chris V

brian
your install looks great, however, drilling a 1" hole below the waterline, then putting a 1/4" wire in that hole and filling with sealant is a disaster in the making.
if that sealant fails, you have a large hole in your hull. there is way to much unreinforced area between the hull and the wire for the sealant to be reliable. the cable clam is definately offering some reinforcement, but not enough for my tastes, especially on an boat built your some serious offshore conditions. I hope it works for you, but that would make me VERY nervous.

www.teamcharlestonmarine.com
www.joinrfa.org


Then please explain to me what everbody does to get the transducer plug through the hull. My previous boat (CapeHorn 24) had a transom transducer as well. The po had simply filled the hole up with some type of white silicone and put one of those stainless clamshell vents over the hole. I never had any problems with it. I had to replace the transducer and I put it back like it was.

I don’t want to run the cable up the outside of the hull to get above the waterline. It looks like crap.

I’m open to suggestions.

2004 Cape Horn 31
twin yamaha 300 hpdi’s

Cape Horn 24OS Sold!
twin 150 Optimax

I don’t want to be rich,
I just want 1 dollar more than I can spend!

“I don’t want to run the cable up the outside of the hull to get above the waterline. It looks like crap.”
either that or get a thru hull transducer.
as for your current setup, anything to reinforce the sealant, so all the water pressure isnt pushing just on the sealant

www.teamcharlestonmarine.com
www.joinrfa.org

The cable clam does reinforce and protect the sealant. Short of hitting something and knocking the cable clam off, I don’t think there’s anything to worry about.

What I don’t understand is why doesn’t somebody make something that inserts into the hole after drilling it to seal the hole up?

quote:
Originally posted by chris V

“I don’t want to run the cable up the outside of the hull to get above the waterline. It looks like crap.”
either that or get a thru hull transducer.
as for your current setup, anything to reinforce the sealant, so all the water pressure isnt pushing just on the sealant

www.teamcharlestonmarine.com
www.joinrfa.org


2004 Cape Horn 31
twin yamaha 300 hpdi’s

Cape Horn 24OS Sold!
twin 150 Optimax

I don’t want to be rich,
I just want 1 dollar more than I can spend!

brian
how does teh cable clam offer support to the sealant, other than a couple little flaps of rubber?
from a liability point of view, if a customer wanted me to do an install like you have, i wouldnt be willing to do that.
im thinking some kind of “T” shaped plug in several pieces with a hole down the middle and a 2piece “washer” that fits over and gets sealed and screwed to the boat.

we need an engineer and manufacturer

www.teamcharlestonmarine.com
www.joinrfa.org

Brianh, I’m with chrisv, those fittings are through deck fittings, not through-hull fittings. They are not meant to keep the ocean out of your hull, mainly just rainwater and spray. You need to get that hole plugged up ASAP!

'06 Mckee Craft
184 Marathon
DF140 Suzuki

Here are a few pictures of the materials used and how it was installed. I really do feel good about this install. The hole was completely filled with 3M 4200 sealant. The base of the clam is screwed to the boat, The hole in the black piece of rubber is drilled smaller than the cable providing a extra tight squeeze on the cable. Then the outer shell which is wedge shaped goes over the black rubber and progressively gets tighter as the screws are tightened.

2004 Cape Horn 31
twin yamaha 300 hpdi’s

Cape Horn 24OS Sold!
twin 150 Optimax

I don’t want to be rich,
I just want 1 dollar more than I can spend!

The cable clam is not designed for installation below the waterline. It says on the product card that it is for deck or bulkhead pentrations. Through hull transducers install just like thru hull connections with a threaded body. Having a penetration in the hull like that will be problems down the road.

My strong suggestion is that you route the cable up the transom and blank that hole with a proper thru hull fitting.

Iain Pelto
Sea Hunt Triton 160 w/ 90 ETEC “JB3”
Native Manta Ray 14

I agree with hairball, chris and tigerfin. No flippin way would I install that fitting below the water line, not on my boat or yours. I couldn’t sleep at night worrying about it and neither could my insurance company:smiley:

Capt. Larry Teuton
Cracker Built Custom Boats
Small craft surveying and repair

That boat easily costs more than my house. That plastic crap is going to cause you to have a real bad day. If you don’t beleive us, contact the manufacturer of your boat and that fitting and ask them. They will both tell you the same thing we’ve been telling you.

'06 Mckee Craft
184 Marathon
DF140 Suzuki