585 fade out
Submitted by sea-kem on Tue, 2012-01-03 15:43
Guys just wondering at what speed does the picture on your Furuno 585 fade out. I'm getting up to about 10-15 knts and then it's pretty much un-readable. Does this mean I need to adjust the tranny? Or something else I can adjust on the unit itself? Cheers Andy
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Lamby
Posts: 3145
Date Joined: 04/08/09
By fade out I assume you mean
By fade out I assume you mean no bottom reading is coming back over 10knots? I assume you have upped the gain but even then that's not good, deffo have to adjust / reposition
sea-kem
Posts: 14857
Date Joined: 30/11/09
Yeah Lamby. No Bottom readout
Yeah Lamby. No Bottom readout and the pic goes fuzzy. So drop the tranny slightly? I got it positioned pretty good as per instructions 3mm below the hull.
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Lamby
Posts: 3145
Date Joined: 04/08/09
Had a hell of a time with the
Had a hell of a time with the old tranny trying to position it so I feel the pain, took a long time to sort out due to the amount of turbulent water around the stern with trim tabs etc.
Before I went with the thru hull I hung over the transom going 25knots to pick the most clear water and marked it, then it was a case of gradually dropping it down until it was right... did take a few go's & had it a bit lower than what I would of picked
sea-kem
Posts: 14857
Date Joined: 30/11/09
Good heads up Lamby, cheers
Good heads up Lamby, cheers for that. Sounds like a bit of tranny adjustment then.
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Patto 1
Posts: 371
Date Joined: 02/12/10
Gday mate.just installed a
Gday mate.just installed a 585 and shoot thru in my boat also and a tip someone gave me was to also try in auto mode aswell.if thats also giving r/s readings then its most def your tranny placement and not the settings.but im definatly no expert with my unit either
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Lamby
Posts: 3145
Date Joined: 04/08/09
great point patto
great point patto
sea-kem
Posts: 14857
Date Joined: 30/11/09
You mean gain adjustment
You mean gain adjustment Patto? If so will try that as I had it in cruising mode.
Love the West!
Patto 1
Posts: 371
Date Joined: 02/12/10
Ah if you had it in cruising
Ah if you had it in cruising mode it should read good at that speed so id be going with tranny placement..im running mine in manual at the moment using settings a fellow fishwrecked member gave me and its reading awsome in the 50s havent tried deeper yet,but when i was in shallower water was getting a solid bottom reading but with the odd gap appearing so something i gota figure out
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sunshine
Posts: 2556
Date Joined: 03/03/09
Not bragging but good to 38 knots
Professionally installed by Chivers Marine - in all honesty I caanot believe how good a picture I get even at high speed - virtually no discernable difference either on manual or auto and we generally run minimum gain. And the speed came from the GPS
Our only problem is that the transducer kicks up at high speed (standard plastic transom mount) so it does sit low in the water in clear flow
sea-kem
Posts: 14857
Date Joined: 30/11/09
Actually that's the type of
Actually that's the type of info I'm after Sunshine. At least now I know what type of readout I'm looking for.
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JohnF
Posts: 2836
Date Joined: 07/07/10
You must angle the tranny
You must angle the tranny slightly down at the rear, not parralel to the hull bottom, to stop turbulence over the surface of the tranny. This is critical to high speed readings.
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Tomcat
Posts: 614
Date Joined: 24/02/11
585
No way can't be impossible it's a furuno lol
Brucesta
Posts: 1721
Date Joined: 29/05/09
certianly not! must be a
certianly not! must be a lowrance in disguise
I installed my 585 with Airmar 258 1kw transducer and i can still see the bottom at 35knots, starts to go away a bit after that, just follows the install guide and it's working fine i like the auto idea to see if it makes it better and see how far below the hull the tranny sits and if it's pointed down a little.
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