Transducer position effecting ride

karrick

Petty Officer 1st Class
Joined
Oct 12, 2003
Messages
259
I obtained a depth finder at a garage sale and installed the 'ducer on the transom. I noticed as I ran the boat, I had a large "rooster tail" shooting up where it was mounted. I had it mounted so it hang about an inch below the hull. The little voice in my head tells me that was wrong. My question is could that provide enough drag to pull the boat to the side and/or not allow the boat to plane out as it should?<br />Thx
 

flashback

Captain
Joined
Jun 28, 2002
Messages
3,987
Re: Transducer position effecting ride

Karrick, I think you may be a little low with the setting, but that being said, I don't think a tranducer is big enough to cause any significant drag in any position..... :p
 

LubeDude

Admiral
Joined
Oct 8, 2003
Messages
6,945
Re: Transducer position effecting ride

Ive seen this before, (not much you can do about it other than trying to raise it a little), but it shouldnt cause problems with planing out unless you have it mounted too close to the engine and its causing air to get to the prop.
 

karrick

Petty Officer 1st Class
Joined
Oct 12, 2003
Messages
259
Re: Transducer position effecting ride

I was planning on raising it this weekend for trial #2. If raising it doesn't work, I'll remove it for the next check. I'll report next week. <br />thx
 

ThomWV

Senior Chief Petty Officer
Joined
Dec 19, 2003
Messages
701
Re: Transducer position effecting ride

You're way to deep. Raise it up so that the end closest to the centerline of the boat is about 1/8" below the hull and the the other side will be longer, depending on what the deadrise-aft of your hull is. Generally if on the deep side you're not much over about 3/8" or a half at the very most, you'll be OK. I immagine it shot up quite a rooster tail like it was.<br /><br />There are indeed transducers what will effect handeling. Ask those guys who are using a B260 with the high speed fairing block on a small boat what effects they are seeing. These things are slowing down 20-something foot boats with twin outboards by 3 or 4 mph on the top end. You hang one of them on one side or the other and the boat will try to go around in big circles on you. These things come in a transom mount too, but I really can not immagine anyone actually bolting one on the back of their boat. As for the much smaller transducers that generally come with fish finders, if yours comes from a manufacturer who packages them that way, they present relatively little drag and you shouldn't even know its there.<br /><br />Thom
 

jmeydenbauer

Seaman Apprentice
Joined
Sep 21, 2003
Messages
47
Re: Transducer position effecting ride

Thom is right, mount it 1/8" below the hull on the side closest to the keel. Also, keep it level or tilted slightly at the rear.
 
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