2008 21 contender ss175hw through hull transducer positioning help

Can anyone help with pictures or measurements for mounting a 1kw through hull tranny ss175hw.


Posts: 4577

Date Joined: 01/02/10

 Hey Aaron. You tried

Sun, 2017-08-27 17:47

 Hey Aaron. You tried wallrock? Either there or the hull truth. 

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Does anyone know where the love of god goes, when the waves turn the minutes to hours?

Posts: 4577

Date Joined: 01/02/10

 I'll bring a tape measure

Sun, 2017-08-27 17:47

 I'll bring a tape measure and a big holesaw. Haha

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Does anyone know where the love of god goes, when the waves turn the minutes to hours?

Posts: 68

Date Joined: 15/09/14

 Definitely will be measuring

Mon, 2017-08-28 08:50

 Definitely will be measuring twice with this one

JohnF's picture

Posts: 2836

Date Joined: 07/07/10

As close to the keel as

Mon, 2017-08-28 09:43

As close to the keel as possible and as far back as possible. Make sure absolutely no fittings, strakes etc in front of the transducer. These puck style trannies are veyr sensitive to any minor imperfection. I had hull paint on my boat, and ended up sanding it with 400 grit to remove little nicks and bumps and that made a big difference to the readings at speed. 

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Boston Whaler 235 Conquest......getting the flogging it was built for.