Author Topic: 999ci - why mount transducer above plane  (Read 3846 times)

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Offline aucivil

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999ci - why mount transducer above plane
« on: June 19, 2015, 10:40:32 PM »
I read a lot about mounting the XHS 9 HDSI 180 T traducer above the at-speed plane line and mounting an additional shoot-thru transducer for at-speed readings.  The transducer has sonar capabilities so why not just mount it where it can be used for at-speed sonar and low-speed imaging?


Offline bobcoy

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Re: 999ci - why mount transducer above plane
« Reply #1 on: June 20, 2015, 07:51:15 AM »
2 main reasons. To protect the expensive HDSI transducer and get better high speed readings. The large transducer is hard to get adjusted for 40 plus mph. I have done it with mine and it works up to 50 mph. I have an aluminum boat so I could not use an in hull. Bob

Offline aucivil

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Re: 999ci - why mount transducer above plane
« Reply #2 on: June 20, 2015, 09:54:18 AM »
2 main reasons. To protect the expensive HDSI transducer and get better high speed readings. The large transducer is hard to get adjusted for 40 plus mph. I have done it with mine and it works up to 50 mph. I have an aluminum boat so I could not use an in hull. Bob

I'm having trouble with installing a shoot-through-hull transducer.  Very limited access to bilge area (unless you have monkey arms).  My cruising speed is 40mph or less.  My test location (board and C-clamp) worked at higher speed for depth.     

Offline rnvinc

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Re: 999ci - why mount transducer above plane
« Reply #3 on: June 20, 2015, 02:25:23 PM »
I'm having trouble with installing a shoot-through-hull transducer.  Very limited access to bilge area (unless you have monkey arms).  My cruising speed is 40mph or less.  My test location (board and C-clamp) worked at higher speed for depth.     

It is entirely your choice if you use the stock XHS 9 HDSI 180 T for depth at high speed ...

Bob covered the possible reasons not to ... Expensive to replace the XHS 9 HDSI 180 T and difficulty in finding clean bubble free water coming off the back of the transom ...

Rickie


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