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Jan 23rd, 2013
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Rt 188 sonar #12393583
08/20/17 05:12 PM
08/20/17 05:12 PM
Joined: Mar 2006
Posts: 1,033
Red Oak, TX
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basscaster46 Offline OP
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Red Oak, TX
Bought new ranger rt 188 problem is they mounted humminbirdtransducer behind trim tabs that are on bottom.
Sonar looses bottom contact what to do?
J D

Re: Rt 188 sonar [Re: basscaster46] #12393629
08/20/17 06:15 PM
08/20/17 06:15 PM
Joined: Jul 2011
Posts: 2,376
McKinney, TX
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David Burton Offline
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McKinney, TX
Does it lose it at a certain speed, or just sitting in the boat? Are you on the front deck when it loses?

It may be mounted a little high, but that is usually a good thing for fishing timber. I think those trim tabs are just above the water when fully planed out.


David Burton
2015 Skeeter FX 21

...and down goes PhotoBucket with the new Terms of Service... I predict they will be out of business or begging for forgiveness inside a month. 6/30/2017
Re: Rt 188 sonar [Re: David Burton] #12393649
08/20/17 06:47 PM
08/20/17 06:47 PM
Joined: Mar 2006
Posts: 1,033
Red Oak, TX
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basscaster46 Offline OP
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Red Oak, TX
Originally Posted By: David Burton
Does it lose it at a certain speed, or just sitting in the boat? Are you on the front deck when it loses?

It may be mounted a little high, but that is usually a good thing for fishing timber. I think those trim tabs are just above the water when fully planed out.

Trim tabs are two small pieces of aluminum angle welded to bottom. They should have mounted it to transom I left or right . Works just trolling around its when you get at speed it loses bottom.
Was looking around found product called stern pad sticks to transom with some kind of 3m tape supposed to be strong. Didn't really want to put a lot of holes in new boat.
J D

Re: Rt 188 sonar [Re: basscaster46] #12393658
08/20/17 07:01 PM
08/20/17 07:01 PM
Joined: Jul 2011
Posts: 2,376
McKinney, TX
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David Burton Offline
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David Burton  Offline
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McKinney, TX
Originally Posted By: basscaster46
Originally Posted By: David Burton
Does it lose it at a certain speed, or just sitting in the boat? Are you on the front deck when it loses?

It may be mounted a little high, but that is usually a good thing for fishing timber. I think those trim tabs are just above the water when fully planed out.

Trim tabs are two small pieces of aluminum angle welded to bottom. They should have mounted it to transom I left or right . Works just trolling around its when you get at speed it loses bottom.
Was looking around found product called stern pad sticks to transom with some kind of 3m tape supposed to be strong. Didn't really want to put a lot of holes in new boat.
J D


Yes, the trim tabs just skirt the top of the water and create a 'bubble hole' when running. The mount for the 'ducer should have been more inboard.

I have 3 transducers on the back of my skeeter: side scan, down scan/2d, and one mounted in hull. The depth is set to read from the in hull, but even I lose bottom when I am on pad. If you want a better option, you can move it below the mounting plate for the motor.

Last edited by David Burton; 08/20/17 07:02 PM.

David Burton
2015 Skeeter FX 21

...and down goes PhotoBucket with the new Terms of Service... I predict they will be out of business or begging for forgiveness inside a month. 6/30/2017
Re: Rt 188 sonar [Re: basscaster46] #12393672
08/20/17 07:24 PM
08/20/17 07:24 PM
Joined: Nov 2010
Posts: 4,214
Charlottesville, Va
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Wayne P. Online content
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Originally Posted By: basscaster46
Bought new ranger rt 188 problem is they mounted humminbirdtransducer behind trim tabs that are on bottom.
Sonar looses bottom contact what to do?
J D


Have the "they" install the transducer properly for that hull. No excuse for putting a transducer aft of the trim tabs--this is just ignorant.


Humminbird Helix 12 CHIRP SI, Helix 12 CHIRP MEGA SI+ GPS G3N, 1198c SI, 1198c SI, ONIX 10 SI NT, Helix 7 CHIRP SI GPS G2,
Helix 7 CHIRP MEGA SI GPS G3, Helix 10 MEGA DI+ GPS G3N, SOLIX 12 SI, 360, RC-1
Re: Rt 188 sonar [Re: basscaster46] #12393882
08/21/17 12:16 AM
08/21/17 12:16 AM
Joined: Aug 2011
Posts: 681
Between Azle & Lake Worth
FlaNative Offline
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Between Azle & Lake Worth
You may want to add a transducer mounting board so you can try different locations without drilling more holes in your transom.


Steve Raulerson
Ranger RT188
Florida Native by Birth, Texan by Choice
Re: Rt 188 sonar [Re: basscaster46] #12393886
08/21/17 12:21 AM
08/21/17 12:21 AM
Joined: Apr 2016
Posts: 542
Plano, Texas
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Nathan_Flovin Offline
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Plano, Texas
that's normal when getting speed. the transducer breaks the water so it doesn't get full contact. I know with garmin you can get a Y cable that goes to a thru-hull transducer and will read depth when the other one loses contact. I'd imagine humminbird wound have the same thing.

Re: Rt 188 sonar [Re: basscaster46] #12394320
08/21/17 11:51 AM
08/21/17 11:51 AM
Joined: Jan 2012
Posts: 1,162
Haslet, TX
Clark3 Offline
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Clark3  Offline
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Haslet, TX
Any external mounted transducer will lose bottom contact when you get on plane. You have to go thru hull to have it read while on plane


Re: Rt 188 sonar [Re: Clark3] #12401765
08/26/17 03:49 AM
08/26/17 03:49 AM
Joined: Mar 2006
Posts: 1,033
Red Oak, TX
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basscaster46 Offline OP
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Red Oak, TX
Thanks for info

Re: Rt 188 sonar [Re: Clark3] #12402138
08/26/17 03:33 PM
08/26/17 03:33 PM
Joined: Dec 2012
Posts: 5,536
Burleson,TX
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Burleson,TX
Originally Posted By: Clark3
Any external mounted transducer will lose bottom contact when you get on plane. You have to go thru hull to have it read while on plane



Not true. My center console will read all the way to 48 mph which is as fast as it will go. Not all boats are able to use a shoot thru hull. The shoot thru are mainly for bass boats and high performance boats that the fiberglass is thin enough for the transducer to shoot thru. Many center console boats have to have a thru hull or a transom mount like mine does.

Re: Rt 188 sonar [Re: basscaster46] #12402176
08/26/17 04:06 PM
08/26/17 04:06 PM
Joined: Apr 2005
Posts: 105
Kansas
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Kansas Basser Offline
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Kansas
Go over to BassBoat Central - bbcboards.net - - Humminbird Sonar/Gps. They have lots of photos for the Ranger RT 188. They are reading up to 50 mil. per hour. I have a 2013 that will read up to 40.


Kansas Basser
Re: Rt 188 sonar [Re: Clark3] #12402193
08/26/17 04:27 PM
08/26/17 04:27 PM
Joined: Jul 2014
Posts: 749
Joshua, TX
tx2va07 Offline
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Originally Posted By: Clark3
Any external mounted transducer will lose bottom contact when you get on plane. You have to go thru hull to have it read while on plane


Mine is transom mounted and doesn't lose bottom contact until around 55mph, sometimes more.

Re: Rt 188 sonar [Re: tx2va07] #12403770
08/27/17 10:03 PM
08/27/17 10:03 PM
Joined: Mar 2006
Posts: 1,033
Red Oak, TX
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basscaster46 Offline OP
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Bought a mounting plate gonna redo it . popcorn

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