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Airmar P79 Placement?

Old 07-09-2014, 02:59 PM
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Default Airmar P79 Placement?

So, after experimenting with locations, I installed an Airmar P79 in what I thought was a good spot. Headed out for a shake-down cruise, and all was well to begin with during a slow cruise in flat water, but then I ended up losing bottom/depth at higher speeds and less than flat conditions.

The bilge in the Pioneer is odd, in that it has a "box" running all the way to the transom on the starboard side. That really only leaves me the port side to install the transducer, where there are two pick-up's for the live wells. The thru hulls are mounted one in front of the the other in a recessed area, with a grill over them, which is flush with the hull. I have to imagine that grill causes some serious disruption of water, so I mounted the P79 further towards the chine, rather than the keel. It's possible it was mounted over a strake.

I'm going to try it just off to the side of the keel which will completely avoid the thru-hulls (it will actually be 12"+ in front of them) and strakes, but due to obstructions, I'll have to mount it about 30" from the transom, just in front of the bilge pump switch. I can't find any information regarding placement with regards to distance from the transom. I'm thinking just off to the side of the keel, I'll have clean water flow, plus that section of boat will always be solidly in the water.

Any suggestions would be appreciated, particularly if you've already been through these iterations!

Thanks!
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Last edited by Commocean; 07-09-2014 at 03:16 PM.
Old 07-09-2014, 03:13 PM
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"Distance from the transom.."

You actually have a good bit of room to work here....the key is to have any transducer placed so that while on plane its location is still well within the "step "....or the area of clean water to hull contact etc.
Old 07-09-2014, 03:23 PM
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Originally Posted by semperfifishing View Post
"Distance from the transom.."

You actually have a good bit of room to work here....the key is to have any transducer placed so that while on plane its location is still well within the "step "....or the area of clean water to hull contact etc.
Ok, so 30" from the transom is acceptable then...I can't imagine the hull being out of the water at that specific location, unless I was being, err, uh, irresponsible...
Old 07-09-2014, 06:23 PM
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Originally Posted by Commocean View Post
unless I was being, err, uh, irresponsible...
or like this...

Old 07-09-2014, 07:26 PM
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Yeah, think I'd lose bottom in that scenario, but then find it at the same time!
Old 07-10-2014, 09:04 AM
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Put it in a bag with water first en try the best spot

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