spray from transducer

[Bushrider]

If this is not the appropriate forum, I will be happy to re-post.
I have an 18" PROcraft bass boat. Last summer I replaced one of my fish finders. The new transducer, mounted on the transom, is larger than the old one was, but is essentially the same shape and in almost the same place. While under power, the new transducer sends a giant spray of water right at the engine. I am sure it does no harm, but water ends up all over the back of the boat. Is there something I can buy or make to mount just in front of the transducer that would cut through the water first and eliminate or reduce this problem?
Any advice appreciated,
David

 

[Bondo]

Re: spray from transducer

Ayuh,... It sounds like ya mounted it too Low,...
Raise it Up abit...

 

[Bushrider]

Re: spray from transducer

Thanks,
David

 

[NYBo]

Re: spray from transducer

Would this be a Humminbird unit? The transducers are notorious for this, and there is a piece of rubber that comes with the unit that goes between the transom and the transducer itself to eliminate the spray.

 

[ufm82]

Re: spray from transducer

Or you could replace the transom mounted 'ducer with a shoot-thru unit and eliminate the transom headache altogether. Did it on my current boat and don't know why I never did it before. It reads at all speeds, never gets weeds hung up on it, never gets kicked up by debris and never gets whacked by anything by the stern. My finder came with a transom mount unit- my dealer let me swap that for a shoot-thru. MUCH better.

 

[Cadwelder]

Re: spray from transducer

Or you could replace the transom mounted 'ducer with a shoot-thru unit and eliminate the transom headache altogether. Did it on my current boat and don't know why I never did it before. It reads at all speeds, never gets weeds hung up on it, never gets kicked up by debris and never gets whacked by anything by the stern. My finder came with a transom mount unit- my dealer let me swap that for a shoot-thru. MUCH better.

Yep thru hull is the only way to go.....no holes in your transom to leak either.

 

[mlrman]

Re: spray from transducer

Yep thru hull is the only way to go.....no holes in your transom to leak either.

do these work with both aluminum and fiberglass hulls?

 

[Cadwelder]

Re: spray from transducer

Yes..... some say the metal interfers with the sonar, but I know plenty of guys in my club that have them epoxied to the hull and they work fine.

 

[Bushrider]

Re: spray from transducer

Thanks for all the feedback. It is a Humminbird - after posting yesterday I picked up a thread in the electronics forum and I see that this is a pretty common issue for them.
David

 

[H20Rat]

Re: spray from transducer

since its a hummingbird, this won't apply, but... On my lowrance with the 'skimmer' transducer, I had alot of spray until i mounted it DEEPER. The transducer itself is a very aerodynamic torpedo shaped thing, and having it half in/half out caused it to spray. once I had it deep enough that water went over the top the spray quit.

As far as shoot thru hull transducers, you won't get accurate temperature readings with those. Just something to think about if that is important.

 

[jimmy spy.]

Re: spray from transducer

My transom mounted transducer on my boston Whaler does this, i've tried meesing with the angle but it hasnt helped. The spray goes straight back, almost like a rooster tail, so i just tell people its sposed to be lik tht. i'd lik to get a thru hull, but i dont know how to mount it, or if it wud even work, in a foam filled boat lik my whaler

 

[Cadwelder]

Re: spray from transducer

As far as shoot thru hull transducers, you won't get accurate temperature readings with those. Just something to think about if that is important.

Very true on the temperature.....I should have mentioned that. I use the temp gauge on the troller motor transducer while fishing.

 

[WIMUSKY]

Re: spray from transducer

Thanks for all the feedback. It is a Humminbird - after posting yesterday I picked up a thread in the electronics forum and I see that this is a pretty common issue for them.
David

Interesting. My Humminbird does the same thing.. I thought it was because I took their mounting advice and mounted it 15" or so out from the prop. Previous transducers were mounted much closer. I have a 728 and it didn't come with a rubber spacer as mentioned earlier. Water hits the side of the motor and a roostertail, but doesn't come in the boat... I just live with it........

 

[Jlawsen]

Re: spray from transducer

If this is not the appropriate forum, I will be happy to re-post.
I have an 18" PROcraft bass boat. Last summer I replaced one of my fish finders. The new transducer, mounted on the transom, is larger than the old one was, but is essentially the same shape and in almost the same place. While under power, the new transducer sends a giant spray of water right at the engine. I am sure it does no harm, but water ends up all over the back of the boat. Is there something I can buy or make to mount just in front of the transducer that would cut through the water first and eliminate or reduce this problem?
Any advice appreciated,


David

Theses transducers are known as skimmers and that's how you set them up. The bottom of the skimmer should be even with the bottom of the boat. However, on a v-hull it's tough to figure out just where that point is while still managing to keep it level so it shoots straight down. I always start by mounting them with the outer most edge level with the bottom and the adjusting slots centered on the mounting screw/bolt. I start with the back end of the transducer kicked up 1 notch above level. From there I can usually adjust them to eliminate the side spray but it often takes a couple of trial runs. It seems there is always some speed where the spray is persistent but I've learned to just live with that if I have to.