affects on transducer

couple of pics

could the shape of my hull affect the perfomance of the transducer at speed?

 

 

 


STEVE231's picture

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PM sent.

Sun, 2010-09-12 12:17

PM sent.

grayzeee's picture

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  is that hull shape

Sun, 2010-09-12 13:51

 

is that hull shape designed to trap an air pocket???

looks like it could create probs.

are you having difficulties at speed??

 

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fisho-ron's picture

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yes mate, losing quality pic

Sun, 2010-09-12 14:34

yes mate, losing quality pic at speed, getting about 15knts at good pic and 18+ starts to show block images

just dhu it's picture

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stepped hull

Sun, 2010-09-12 14:07

that stepped hull is going to create a lot of interference across the transducer with air bubbles. you shpuld show some pictures from behind the motor to ee where else it could mount , otherwise get a through hull unit

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I just stuck my trancducer

Sun, 2010-09-12 14:13

I just stuck my trancducer in the hull with silicon works
perfect at all speeds.

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fisho-ron's picture

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paul, i was told by a pro

Sun, 2010-09-12 14:36

paul, i was told by a pro fisherman that through hull loses about 30%of quality, have you noticed a change or is it a bigger tranny?

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I have a Haines Signature

Sun, 2010-09-12 15:53

I have a Haines Signature with SVDH hull that is quite similar in shape as your boat.I had similar problem and ended up having to put the tranducer right out to the side of the boat.I also have another transducer firing through the hull [two sounders] and have swapped the transducers around quite a bit and have found some difference in levels of detail but not really that much difference

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looking at the hull shape i

Sun, 2010-09-12 14:36

looking at the hull shape i think an in hull mount like Paul said would be your best option.

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Paul G's picture

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I have not yet been out

Sun, 2010-09-12 14:56

I have not yet been out deaper than 25m but it is clearer now than it was on the back of the boat .We pick out edges and caves in 20m no problem the other dayI dont fish deeper than 40-45m most time.Same trancducer 50-200 600khz

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fisho-ron's picture

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geez paul that is very

Sun, 2010-09-12 15:25

geez paul that is very interesting that you have not lost anything.

so i wonder if what they say, is it people guessing or making assumptions that it will lose qaulity?

 

before i play with the tranny to much i have changed some settings on my 10 and will give that a go.

it still shits all over my navman, i just always want more!!more and more!!! will it ever stop?

cheers

ron

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Ron if you just unclip your

Sun, 2010-09-12 15:57

Ron if you just unclip your transducer and put it in a plastic bag inside your hull you need to hold it in place . I was amazed at how just in a bag it worked fine.I have even a one point cut and joined the cable for the transducer .I have a furuno 7000f,and a small lawrance.

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just to clarify i have a

Sun, 2010-09-12 16:00

just to clarify

i have a flat bottom hull and i lose pic at speed unless it's a mirror out there.

sure , it'll pick up the bottom/depth when doing 20 + knots , but it will keep losing it as you hop and jump over the chop. nature of the beast with the transom mount IMO (someone may have found the g spot on their transom , but not me Wink)

if i'm sounding to try and find ground/fish then it's 10 knots max for me.

i don't know if people are expecting the quality of return when travelling at 35 knots as they get at 5 knots.

could be chasing rainbows

 

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Will be interested to hear

Sun, 2010-09-12 16:50

Will be interested to hear your results Ron. My transom is the same and tend to fade to black on the sounder at 10 knots.

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just found this on ebay,

Sun, 2010-09-12 16:54

just found this on ebay, says it is a 600watt 50/200 that gets glued to the hull, with ajustable  from 2-22 degree hull

LOWRANCE P79 50/200KHZ IN-HULL TRANSDUCER LOWRANCE P79

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No your not going to pick

Sun, 2010-09-12 16:55

No your not going to pick out the finer detail at speed .I will just see a slight rise or drop and wack in a mark then next time go check it out ,Will pick up schools at speed.I could not find right spot for the furuno but ther lawrance will work at any speed in all conditions on the transom .

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fisho-ron's picture

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paul, mine is the hds10, at

Sun, 2010-09-12 16:59

paul, mine is the hds10, at high speed it loses color, and the pic goes to block type figures, the depth remains good.

i have changed some settings and will try that before a new tranny

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Cammos Mine was the same

Sun, 2010-09-12 16:58

Cammos Mine was the same ,its not the transducer its the placement in my case nowhere on the transom was good for the furuno that is why I put it in the hull.

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paul, have you put it in a

Sun, 2010-09-12 17:05

paul,

have you put it in a wet box or just glued straight to the hull?

another story was you are not supposed to run the trannys out of the water!

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Stright to the hull. The

Sun, 2010-09-12 17:12

Stright to the hull. The info I got came from a guy in the buisness .When you think the transducer face is all that is in the water when traveling along ,so one would think if the face is set in silicon it would be the same thing.I'll post some pics of placement and pics of picture next time on the water showing different speeds.The only thing is if the silicon lets go you need to clean transducer face and stick it in again .

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Nothing flash .the one in

Sun, 2010-09-12 17:30

Nothing flash .the one in the middle was stuck in with epoxy before I got the boat

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fisho-ron's picture

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if it works it works. if

Sun, 2010-09-12 17:37

if it works it works.

if mine is not better with the change in the settings, thats what i will try,

talking with steve231 he is getting the same reading going slow or flat out with the hds10

i always thought the shape of my hull would interfear with the trannys,

 

when you try it a bit more let us know how it goes

cheers paul

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no worries

Sun, 2010-09-12 17:39

no worries

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through hull transducer

Sun, 2010-09-12 17:52

Guys buy pvc drain pipe from bunnings which ever size suits your transducer glass the tube in stick the transducer down on a  solid bed of silicone or sika fill the area with cooking oil then screw the lid on the cooking oil works a treat does not airate  and presto job done or just buy a true through hull transducer. Nothing worse than transducers airating and not to mention the extra screw holes leting moisture in to your trannie.Wink

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tranny relocate

Sun, 2010-09-12 20:32

Ron i would be in for moving the tranny temporary as Paul said , just try a different location, as looking at the underside of the hull i cant invisage getting a good signal with the standard tranny, i had a lcx 37 with broad band unit awhile ago and bought up the similar problem before on the site ,  i assume when you mention block image you are talking pixels in a square format over your screen,  i had these and with some advice from the techs at all boats we found that it was interference from the motor ( prop wash noise) and All boats lent me another tranny which i relocated to different parts of the transom but could not get rid off the problem,   we then put a tranny on a pole and while driving along at 12 knots i put the pole over the side and watched the sounder and worked out that i  had to be at least 1mt further forward of the motor to  illiminate all of the interference anywhere on the transom it created the same fault.  i then purchased a through hull tranny and mounted well forawrd off the motor and got a clear picture.

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thanks mate, looks like i

Sun, 2010-09-12 20:43

thanks mate,

looks like i might try the one in the pic from ebay, it will be mounted about 800mm forward of the transom pretty close to the keel..

i have no other excess areas in the boat to mount it without cutting holes in the floor.

 

it must be the shape of the hull/motor casuing the prob because my navman cuts out earlier than my 10 and they are both transom mount.

 

a little while ago i had a 1kw tranny in a wet box mounted forward and that read at speed no probs.

cheers ron 

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I have the In-Hull tranducer

Mon, 2010-09-13 08:58

600w 50/200 ($160) in my Baron with a JRC FF50 and works great. I have used propolyne glycol as the prefered liquid for density, coolness and no airation. I'd love to see how it would work with the HDS unit being digital and not as the Analog JRC! If you go the In-Hull trannie make sure that where you place it there is solid F glass and no core. My Baron at the rear floor is only about 6 - 8 mm solid glass so I don't think I am losing any power from the tranni. cheers and good luck !

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gotta agree with the in hulls

Mon, 2010-09-13 09:46

I recently just had the same trouble with my transducer on a furuno 585. Took me ages to get the reading and picture right. I ended up taking it off the transom and building a wetbox for it out of structural ply. I fibreglassed the whole thing and siliconed it in the hull. Works a treat now. good picture at speed and good depth readings. I would have gone with the PVC storm drain idea but being a 1KW it wouldnt fit. An even better idea is to go with a through hull transducer, if you dont mind drilling a hole in the bottom of your bota. In hindsight, thats what I should have done.

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muppet i had a 1 kw tranny

Mon, 2010-09-13 16:49

muppet

i had a 1 kw tranny in a wet box a few months ago, but i sold it with the comercial sounder i had. was not suitable for the hds10.

not to keen on drilling holes in the hull so i think i will go with the black one pictured in this post, it is a wet box type, comes already made just need to glue in for$170 delivered.

i will leave the one on the back and see what the differances realy are, i am getting good pics now, just have to go slow.....me and slow dont work!!!!

will be fitted in the next few weeks and i will ost the results with some pics.

cheers

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How fast can ya really go

Mon, 2010-09-13 19:02

How fast can ya really go anyway sounding? if ya going to quick your already 200m past the mark when you see anything good on the screen!

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hey samo thats the good

Mon, 2010-09-13 19:43

hey samo

thats the good thing about the hds, you can drag the screen back, find the nice spot you seen and ping a mark and go straight back to it.

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20knots is the speed i

Mon, 2010-09-13 19:10

20knots is the speed i travle around most of the time ,and I have found plenty off ground at this speed.

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fisho-ron's picture

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ok the very impaitent person

Tue, 2010-09-14 20:52

ok

the very impaitent person i am and wants everything now, could not wait to try the new settings out and bought the black round wet box type tranny pictured.

 

LOWRANCE P79 50/200KHZ IN-HULL TRANSDUCER LOWRANCE P79

 

will install for the weekend and post some pics asap on the differances.

cheers ron

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also to add to this. try to

Tue, 2010-09-14 21:43

also to add to this.

try to explain if you can!!

 

exactlly the same transducer (p79)

to suit lowarance/hds $380.

to suit garmin $170

identical 50/200 600watt, the only differance is the plug at the end, that is one hell of a expensive plug.

i asked the guys at the shop the same question and could not answer.