The Fishing Website : Discussion Forums : Transducer placement https://www.fishing.net.nz/forum/ Wed, 17 Jun 2026 08:20:59 +0000 Mon, 12 Mar 2018 18:48:11 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.01 360 https://www.fishing.net.nz/forum/RSS_post_feed.asp?TID=127339 <![CDATA[The Fishing Website : Discussion Forums]]> https://www.fishing.net.nz/forum/forum_images/web_wiz_forums.png https://www.fishing.net.nz/forum/ <![CDATA[Transducer placement : I think josh also does trips to...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720908&title=transducer-placement#1720908 Author: JB
Subject: 127339
Posted: 12 Mar 2018 at 6:48pm

I think josh also does trips to the regions and looks at multiple boats etc at a time. If your interested give him a bell and see if he is down your way sometimes.
It's like have a proper mechanic sort your car out]]> Mon, 12 Mar 2018 18:48:11 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720908&title=transducer-placement#1720908 <![CDATA[Transducer placement : Josh WesterThis guy is the guru...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720874&title=transducer-placement#1720874 Author: Steps
Subject: 127339
Posted: 12 Mar 2018 at 11:41am

Josh Wester
 This guy is the guru on sounders transducers...
 When we where having issues setting our transducer up.. every trip out a change position or angle, jump over board change angles heights.
We came home late one evening at the ramp. At the wash down,( I knew who he was as had been to several of his seminars) We where in front of him and without even close examination, pointed out how the transducer was not mounted well.I asked..he suggested, told him even that didnt work well....little more discussion listening to him.
 Problem solved next trip out. We could not set up the transducer 'correctly' because the older hull design floated air under the hull from the bow.
 As to  best screen settings, for what we use the boat sounder for, that was sorted at one of his seminars.. took a couple notes went home made the changes all good ever since.
 And hes a really nice guy to
 For those out of towners.. even locals.. if having issues , looking at updating .. booking a day out with him is very worth while...a learning curve way beyond you immediate needs, but very interesting....and a excellent day out on the water , good company.
 Sort of like a charter day out catch fish and learn about gps sounders in detail, in terms very easy to understand for the lay person.

I can now see bottom structure clear enough for me to note and investigate if so desired.
 Accurate repeatable gps positioning and being able to see what is on the bottom, related back to previous historical records of time of yr , tides, water temps, time of day etc gets us far more fish than actually seeing the fish... except for bait balls getting live bait and schools around the balls in open water,
]]> Mon, 12 Mar 2018 11:41:46 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720874&title=transducer-placement#1720874 <![CDATA[Transducer placement : I live down in Hawkes Bay.I&#039;m...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720850&title=transducer-placement#1720850 Author: AdAstra
Subject: 127339
Posted: 11 Mar 2018 at 9:53pm

I live down in Hawkes Bay.
I'm quite happy with what I see.
At planing speed, I am not looking for fish or any great detail.
I can now see bottom structure clear enough for me to note and investigate if so desired.
]]> Sun, 11 Mar 2018 21:53:15 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720850&title=transducer-placement#1720850 <![CDATA[Transducer placement : The disturbed band on the far...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720848&title=transducer-placement#1720848 Author: AdAstra
Subject: 127339
Posted: 11 Mar 2018 at 9:49pm

The disturbed band on the far left is the point where knowing I was near or at the wreck site, I cut the motor and came off the plane. The clear is where I was at the low speed as displayed.]]> Sun, 11 Mar 2018 21:49:54 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720848&title=transducer-placement#1720848 <![CDATA[Transducer placement : If you want it sorted asap and...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720844&title=transducer-placement#1720844 Author: JB
Subject: 127339
Posted: 11 Mar 2018 at 9:21pm

If you want it sorted asap and in Auckland, give josh wester at railed fishing a call he does onsite transducer and fish finder sorting out. He's fixed heaps. It will be transducer position or settings. It's worth a couple hundred for his time to sort.

Give him a bell on. You could be adjusting it for the next 10 trips before getting it right and he will give you a quick lesson in settings for you as well.

https://m.facebook.com/981362045224956/photos/a.985555811472246.1073741827.981362045224956/1878324498862035/?type=3&source=44
]]> Sun, 11 Mar 2018 21:21:36 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720844&title=transducer-placement#1720844 <![CDATA[Transducer placement : Looks like what mine shows -...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720833&title=transducer-placement#1720833 Author: letsgetem
Subject: 127339
Posted: 11 Mar 2018 at 7:23pm

Looks like what mine shows - that Im sure is prop wash. Does it change if you trim the motor forward or back.]]> Sun, 11 Mar 2018 19:23:23 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720833&title=transducer-placement#1720833 <![CDATA[Transducer placement : ust returned from a weeks fishing...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720830&title=transducer-placement#1720830 Author: AdAstra
Subject: 127339
Posted: 11 Mar 2018 at 5:38pm

ust returned from a weeks fishing at Mahia.
I launched from Mahia Beach and within a short space of time saw that the image on screen was unacceptably cluttered at both low speed and on the plane.
I returned and adjusted it back to previous setting. Clear image at low speed. Not so clear at high.

That evening when boat back on trailer, I made some fine adjustments to this. Trailing edge very slightly higher than front




Bearing in mind picture quality on my screen dumps is much lower than that displayed on actual screen!
These are the results.
                                                                                                      



]]> Sun, 11 Mar 2018 17:38:14 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1720830&title=transducer-placement#1720830 <![CDATA[Transducer placement : T/ducer is 440mm from keel and...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1719045&title=transducer-placement#1719045 Author: Steps
Subject: 127339
Posted: 27 Feb 2018 at 2:43pm


T/ducer is 440mm from keel and 240mm from outside of diameter of prop.
 240mm that full lock closest?
 Im 350mm from the prop if the engine is turned full lock.. about 510mm in straight ahead position.
( 2001 150hp 20" V6 johnny)
And about 500mm from center of stern.. keel finishes well up under the boat, not at the stern.

Now looking around for a suitable device to prevent any spray.
 Plastic  5L container mounted behind the transducer mounting screws Wink


To date I have not seen any neither is there any sign of salt deposits under the cowling.

you will see very little salt deposits, but will notice corrosion around plugs and stuff start.. the issue is sucking air with salt laden water into the intakes/ engine.. salt also acts as a grinding paste.. wear.

 The deposits tended to build up over a day far more on the top and sides of the engine cover.. outside.
 Couple times a yr  I wash down and dry off then mist spray lanolin aerosol the power head, inside cover to protect... Dont use crc type products , they can attack certain electrical cable insulations/ HT leads.

 My motor is a 2000 Johnson115 Ocean Pro. Can only be on the lower casing facing front!

 Thats it... pic below

I guess if I'm switching on to say input way points, I should use the stop sonar function!

yes..or bucket of water.. or dont plug the sonar connection into the back of the sounder unit.
 The transducers, my understanding is what pulls most of the current of the overall unit... lot current= heat
 Same thing applies to submersible stern lights

 One thing not covered here  is electrical interference.. running the transducer cable next to the main looms.. and issue I also looked into. I ended up separating the cable and loom from lay on the floor(about 500mm) no difference.. I think the modern transducer cabling is shielded far more superior than traditional sheilded cables.Even so mine are hanging 50/ 70mm off the main cable with cable ties up under the gunnels. Could be a very different story on big high end offshore type sounders and transducers thu

johnson 2001/ 2004  leg speedo connection.
PS irrigation capillary tube from mitre 10 fits, and the irrigation connectors also work well in joins
 knew had a pic uploaded a while back.. think its the old  2004 115 johnny
 

]]> Tue, 27 Feb 2018 14:43:37 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1719045&title=transducer-placement#1719045 <![CDATA[Transducer placement : T/ducer is 440mm from keel and...]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1719040&title=transducer-placement#1719040 Author: AdAstra
Subject: 127339
Posted: 27 Feb 2018 at 1:36pm

T/ducer is 440mm from keel and 240mm from outside of diameter of prop.

I was thinking the same re hull design.
Mine would have been built when only research vessels looking for the Titanic or anti-submarine warships carried such gear.
Now looking around for a suitable device to prevent any spray.
To date I have not seen any neither is there any sign of salt deposits under the cowling. But.........

Will look for that pick-up for speedo shortly. My motor is a 2000 Johnson115 Ocean Pro. Can only be on the lower casing facing front!
Was not aware of using sonar out of water. Heard/read a few forums. Some saying yes others saying no.
I guess if I'm switching on to say input way points, I should use the stop sonar function! 
]]> Tue, 27 Feb 2018 13:36:54 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1719040&title=transducer-placement#1719040 <![CDATA[Transducer placement : Speedo intake is 200mm from t/ducer....]]> https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1719035&title=transducer-placement#1719035 Author: Steps
Subject: 127339
Posted: 27 Feb 2018 at 12:52pm

Speedo intake is 200mm from t/ducer. I have though removed it.

More holes.Angry
 As I said above check out your engine.. if a jonny, evinrude merc.. these I know have speedo ports built into the leg for the capillary tube.
 I have no idea why these are not used.. both the after market leg and outboard legs read damn near the same as the gps.. just not in 0.1x increments.

 When re route down thru the leg/ tilt bit in pieces, choose the route well, otherwise the tilt will chop the capillary tube
Give you one guess how I know a lot of these things Wink
Your have speed on the gps/ sounder, like you not having a gauge operational just doesnt 'look right'


 That last pic has gotta work.
 If it doesnt then I would hazard a guess that you are too close to the keel,
or
the hull design, like our older design hull, pre sounder  'pre economic for joe public' is designed to pull air in and down under the hull which decreases friction, increases economy fuel efficiency power/ weight ratios.
 What hull/ boat is it?
Took months for me to figure out about the air friction thing, and only came across that talking to an old very retired marine engineer, designer.
It was then I simply dropped the transducer 'too low' knew about salt spray engine issues etc, looked around the shed, including the rubbish bins and found the 5L plastic container, mounted and started trimming.

Use the search button above , find a couple threads on this subject about 18 month 2 yrs ago.. lot good info and read the links re your settings.
We are just 2m to 55m max, so the settings are just set .. cant rem what they are except.. blue background

 Very Important: DO NOT operate the transducer out of water
]]> Tue, 27 Feb 2018 12:52:48 +0000 https://www.fishing.net.nz/forum/forum_posts.asp?TID=127339&PID=1719035&title=transducer-placement#1719035