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HDSI Location #11917016 11/04/16 06:40 PM
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hocdrummer Offline OP
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I mounted an HDSI transducer on my transom. Its about 1/4 inch below the bottom of the boat. Im losing bottom at speed on 2D and getting a roster tail. Where would you start? Move the ducer down or up?

Re: HDSI Location [Re: hocdrummer] #11917031 11/04/16 06:51 PM
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Wayne P. Offline
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The temp sensor end needs to be lower than the leading end to get water flow across its face.

Anytime you put an obstruction in water at speed, you will get a rooster tail---simple physics.


Helix 12 CHIRP MEGA SI+ GPS G3N and G4N, 1198c SI, SOLIX 10 SI G3,
Helix 8 MEGA SI+ GPS G4N, SOLIX 12 SI and G3, MEGA 360, MEGA LIVE TL, RC-1
Re: HDSI Location [Re: hocdrummer] #11917185 11/04/16 08:28 PM
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hocdrummer Offline OP
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Ive got the back of the ducer (the closer part to the transom) a few clicks down so it angles up a bit. Is that what you are referring to?

If you lose the bottom at speed where would you start moving the ducer?

Re: HDSI Location [Re: hocdrummer] #11917322 11/04/16 09:57 PM
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Txduckhunter Offline
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I'd buy a thru-hull for 2d and run it when I was on pad.

Re: HDSI Location [Re: hocdrummer] #11917335 11/04/16 10:20 PM
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Might want to consider a 2d user along with the hdsi transducer with a y cable. If you went with the shoot thru ducer you would have to go with the alumaducer to shoot through aluminum

Re: HDSI Location [Re: hocdrummer] #11917360 11/04/16 10:46 PM
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Wayne P. Offline
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Originally Posted By: hocdrummer
Ive got the back of the ducer (the closer part to the transom) a few clicks down so it angles up a bit. Is that what you are referring to?

If you lose the bottom at speed where would you start moving the ducer?


Did you read the Installation Guide for that transducer?

It is here, download the guide and refer to section 5:

http://www.humminbird.com/Products/XHS-9-HDSI-180-T/

If you have a stepped transom, you have go by the bottom of the hull, not the bottom of the transom that the motor is attached to.

Last edited by Wayne P.; 11/04/16 10:48 PM.

Helix 12 CHIRP MEGA SI+ GPS G3N and G4N, 1198c SI, SOLIX 10 SI G3,
Helix 8 MEGA SI+ GPS G4N, SOLIX 12 SI and G3, MEGA 360, MEGA LIVE TL, RC-1
Re: HDSI Location [Re: hocdrummer] #11918141 11/05/16 02:34 PM
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hocdrummer Offline OP
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Got it. Ill adjust the angle and re test. Thanks!

Re: HDSI Location [Re: hocdrummer] #11921057 11/07/16 03:49 PM
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Jones Trolling Motor Offline
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which boat do you have?


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