1kw transom mount
Submitted by 81macca on Sun, 2009-11-01 07:25
Have fitted a 1kw transom mount for my Furuno sounder but am having touble with the large unit throwing a rooster tail into the air. Have put the unit in just abpout every posssible position but having no luck. The sounder reads clear to about 34knt but sends this rooster tail about 8 foot in the air. Originally i thought the unit was too low but have moved it near on out of the water but still no joy. Any tips would be great, have heard of a splash cover anybody seen these?
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I actually fish.
Ashram
Posts: 134
Date Joined: 23/10/09
Picture
Do you have a photo of the transducer on your transom to have a look at? Is it the kick up bracket style or the peg leg looking mount?? Mind you getting 34knots and a clear picture is a good result. I have heard of people constructing a splash guard to stop the water going on the outboard but I have never come across them as an off the shelf item.
Cheers Rhyss
81macca
Posts: 270
Date Joined: 02/07/09
Dead camera
Dont have any pictures but is the stainless bracket with the brake away washer set up.
I actually fish.
Ashram
Posts: 134
Date Joined: 23/10/09
Yep I know the one. The
Yep I know the one. The bracket may need wedging out on the transom but personally I think getting that picture at that speed is a good result and dont want to see you fiddle around and get a bad picture in the end. Next time you are out get your mate to drive and have a look over the back and see where and why the water is pushing against the transducer. You might be able to rectify it then. Sometimes its even a skin fitting just changing the water shape and causing the hassle.
Good luck
81macca
Posts: 270
Date Joined: 02/07/09
Have tried placing wedges
Have tried placing wedges and have looked over the back seems have tried everything but the splash guard. Best position i have had is that high up that on a plane the braket is out of the water, tells me maybe its the bracket sending the water up not the transducer. Any other brackets? (is on a trailcraft 6.10)
I actually fish.
Simon C
Posts: 801
Date Joined: 01/05/07
no solution mate - just weld
no solution mate - just weld a plate above it to deflect it out of the motor. Mine sends a huge roost at speed but still reads at 30knots. Really it is like a big trim tab so anytime you are having something that big in the water it will throw up a spray!
Ashram
Posts: 134
Date Joined: 23/10/09
Peg Leg
There is one that allows you to pull it up and down. You use your existing transducer and screw it to the bottom of the bracket which looks much like a prosthetic leg. I'm not sure if that will sort the problem though. I have seen more of this type of bracket kick up a rooster tail than the kick up bracket.
I think on the trailcraft they put a bracket to attach your transducer and bracket to it might be that welded bracket that is giving you the grief.
dan from Styx Marine might be able to help you out. he used to work for trailcraft and now builds his own. he is a FW member (daniel_hughes ). Try dan for some ideas.
Cheers
alfred
Posts: 3097
Date Joined: 12/01/07
The tranny needs to be
The tranny needs to be behind a skeg or step. If it is at the V it will have to be set lower to get a good reading, but will throw a tail. This is set just 3mm lower then the skeg line and gets a solid reading at WOT with no rooster tail.
alfred
Posts: 3097
Date Joined: 12/01/07
Quick fix is a 2 liter soda
Quick fix is a 2 liter soda bottle and cable ties. Just cut the neck so you have half a funnel this will mount over the tranny cover, up the gap between it and the bracket. I am willing to bet the water is coming from between the tranny and mounting bracket.
Tony Halliday
Posts: 2500
Date Joined: 14/06/07
I have a few in my pics of my set up
I have a few in my pics of my set up in my gallery,
http://fishwrecked.com/image/tranducer-installed
http://fishwrecked.com/image/tranducer-bottom-view
http://fishwrecked.com/image/1-kw-trannie-set
thats a 1kw commercial transducer connected to a Furuno 585, ( now sold the unit, cause an upgrade is on it's way... :-)..)
I have it offset from the motor, about 30cm max and runs clear of the bottom of the hull and in the clear water.
I have not done more than 20 knots with my tub, but don't get any rooster tail at all.
if you look at the bottom of my unit, it has been cleanly bridged to the hull.
You may want to make up a small allie type flare to ensure that the water can not come up between the hull and the front leading edge of you transducer.
I think the guys are right in saying the water is coming up where a vacuum is being formed by gap.
Tony Halliday: ~Meals on Reels ~
It takes a strong fish to swim against the current. Even a dead one can float with it
"It is always in season for old men to learn." Aeschylus (525-456 BC)
"In a mad world only the mad are sane." Akira Kurosawa (1910-1998)
81macca
Posts: 270
Date Joined: 02/07/09
Cheers thinking of fabing a
Cheers thinking of fabing a new bracket. Yeah do think its coming from gap between tranny bracket and hull.
I actually fish.
Faulkner Family
Posts: 17182
Date Joined: 11/03/08
def the gap ,had the same
def the gap ,had the same prob but mine was a 600 wat transducer. found it was sitting just a fraction too low in the water, good luck with the fix
RUSS and SANDY. A family that fishes together stays together
mytime
Posts: 8
Date Joined: 19/11/09
Hi Alfred, May I ask what
Hi Alfred, May I ask what kind of motor you have on your boat or the boat you have pictured? The reason I ask is because I have the same Transducer and bracket as you but I was told to install mine on the Starboard side of the boat because of the rotation of an outboard prop. Mine seems to be working ok with my Furuno 585 but because it's all new I'm still learning to read it... and now seeing the picture your've posted I'm questioning whether I have my Transducer positioned properly.
till
Posts: 9358
Date Joined: 21/02/08
He has a verado and it spins
He has a verado and it spins in the same direction as most. Convention has people putting them on the right side of the motor, but the left works too.
alfred
Posts: 3097
Date Joined: 12/01/07
Till is right, it is a Verdo
Till is right, it is a Verdo and it spins in the conventional direction. Normal instructions suggest it should be placed on the starboard side due to prop wash. I have it on the port side only because I know it is in a "clean wash" area on my hull. On the port side it will second as a lifting tab. Due to the prop rotation, that side of the hull will be lower when the motor spins.
fishcrazy
Posts: 1235
Date Joined: 27/01/07
left
had mine mounted on left side never had a prob