xb2003 question

[Mad-optiMax]

Just got a new Lowrance with dual frequency transducer; where is best place on transom to mount bracket? With my other GPS unit(Garmin), bracket was alot smaller and no problem to mount opposite side of speedo pick-up. Is there a space between gas-tank and hull for short screws if I go higher? Ain't drilling till I'm 100% sure will work. If somebody could post pictures I would be greatful!

 

[scott mann]

transducer

I drilled and tapped my jackplate and mounted my transducers there. Send me an email and I'll send you a pic.
scootertrash@cox.net

 

[jimmyb]

FYI, if you mount on the jackplate, you will only be able to use the transome mounted transducer at off plane speeds... on plane it will be out of the water.

However, i dorked around for about 1 year trying to get a transom mount transducer to work on my allison while on plane... after breaking a transducer or two, i gave up and figured the transom transducers werent up to the task of living during an 80+ mph shutdown... hehe


I am running a humminbird 987c on my boat. The big side imagine transducer is mounted on the jackplate, then i have a shoot thru hull mounted in the transducer tray in the boat. I have a transducer switch that allows me to switch between the two transducers and i can read depth at speeds up to 50-55 with the shoot thru hull

 

[Mad-optiMax]

I guess thru-the-hull is the best solution except you get no surface temp reading which does come in handy. Considering just taking off speedo-pickup since it never stays popped down anyway; and mounting in that area since its a little larger. That is what makes me think there is small space between gas tank and transom.

 

[Blueally XB21]

Just an FYI guys. I use the built-in well area for the thru hull transducers in my Allison with a surface temp readings and I also have a surface temp reading on the trolling motor transducer which has direct water contact. They read with in a 1/2 degree with each other. I was suprised they where that close but I guess the conductance of the water contacts transducer well area of hull and keeps the hull close to the water temp. If I understand it correctly, the builtin well area section on allisons do not have the core material so the temp of the hull in that area will be very close to the same as the water temp.

Just my .02 worth. Hope it helps.

Harvey

 

[jimmyb]

depending on the unit you have, you can get a seperate temperature sensor. Humminbird makes one, that you can easily mount anywhere on the jackplate...

http://www.humminbird.com/retail/category.asp?catalog_name=Humminbird&category_name=Temperature+Sensor&Page=1


dunno about other brands though

 

[Mad-optiMax]

Harvey, are you able to maintain good sonar contact with bottom while on plane? With my Garmin 168 mounted off transom; 25-30 mph was about it and still get good reading

 

[froggy]

I have a PinPoint in the dash and the transducer in the Allison "bucket". I get a clean reading to 75 mph then it disappears.

froggy

 

[Mad-optiMax]

Where's the best spot on a xb for shooting thru the hull? Other side of center rib opposite pump? Does spot have to be sanded smooth first? Or is there a tray under gas tank?

 

[jimmyb]

the tray is under the livewell... you get to it thru the little access panel behind the bench seat (if you have a bench seat)

 

[Blueally XB21]

Mad-Optimax, I can read well up to 70+ MPH. With that said, the XB21 hull is different than the XB2003 hull. My brother-"out"-law had a 2003 that read okay at 60ish MPH. You can mount the transducer with a "thin layer" of silicon just as a test, if it works mounted with silicon it will work much better when you mount it permanent with epoxy in the same spot. Just a thought...

Good luck,
Harvey

 

[Mad-optiMax]

Guys, thanks for all good responses to questions! I never would have thought to look under livewell. Probably once you hit 60-65mph that part of pad is too far out of water for transducer; and just start getting surface clutter.

 

[jimmyb]

i dont know what you guys are seeing on sonar returns running at 60! hehe

if you realize that the water is too shallow, well you better not shut down!

 

[fishnfireman]

Garmin also has a seperate temp. sensor.

Don't feel to bad if you can't keep a signal thru the hull at faster speeds.
Both of my Allisons would lose it above 50