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Dec 30th, 2023
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 Hummingbird 798 - Too highm, too low?
#6290398
06/13/11 11:38 AM
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Joined: Jan 2010
Posts: 853
Jackhammer
OP
Pro Angler
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OP
Pro Angler
Joined: Jan 2010
Posts: 853 |
Yesterday, I got to try out the new SI. It works great. Good clear pictures. However, after I get up about 15 MPH it begins to throw up a rooster tail right at the transom.
Do you think I need to tilt the transducer back a little at the rear, or what?
Jim
Diana, Texas
If Christ is not first in your life, then you're settling for second best.
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Re: Hummingbird 798 - Too highm, too low?
[Re: Jackhammer]
#6290543
06/13/11 12:53 PM
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Joined: Apr 2011
Posts: 542
Western
Pro Angler
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Pro Angler
Joined: Apr 2011
Posts: 542 |
Check the CD that came with it, I think they go over that. The CD without the manuals on it, I "think" it was to be tilted down, but.... I will look over my CD to make sure. Come to think of it, I might have seen that on one of Doug V. install videos.
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Re: Hummingbird 798 - Too highm, too low?
[Re: Western]
#6290574
06/13/11 01:08 PM
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Joined: Apr 2011
Posts: 542
Western
Pro Angler
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Pro Angler
Joined: Apr 2011
Posts: 542 |
I stand corrected, it must have been a utube video I watched.
Anyway, on the CD, Title 13 chapter2, it said "transducer should be 1/2"-1" below transom.
On the Utube video they said the transducer should be slightly tilted down in the rear. Hope that helps . If I can find the video I'll try to post the link.
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Re: Hummingbird 798 - Too highm, too low?
[Re: Western]
#6290585
06/13/11 01:13 PM
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Joined: Jan 2006
Posts: 6,253
sandjohnny
TFF Celebrity
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TFF Celebrity
Joined: Jan 2006
Posts: 6,253 |
Humminbird sells a little piece of plastic to stop that rooster tail. Its cheap.
Johnny
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Re: Hummingbird 798 - Too highm, too low?
[Re: Western]
#6290591
06/13/11 01:16 PM
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Joined: Apr 2011
Posts: 542
Western
Pro Angler
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Pro Angler
Joined: Apr 2011
Posts: 542 |
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Re: Hummingbird 798 - Too highm, too low?
[Re: sandjohnny]
#6290640
06/13/11 01:30 PM
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Joined: Sep 2009
Posts: 1,220
Allan W
Extreme Angler
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Extreme Angler
Joined: Sep 2009
Posts: 1,220 |
Humminbird sells a little piece of plastic to stop that rooster tail. Its cheap.
Johnny It should come with the plug Johnnys talking about.
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Re: Hummingbird 798 - Too highm, too low?
[Re: Allan W]
#6290769
06/13/11 02:11 PM
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Joined: May 2009
Posts: 328
Captain Chris
Angler
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Angler
Joined: May 2009
Posts: 328 |
A rooster tail and sounding should never be a problem by mounting a high speed transducer aft and up... and out of the "trough" where problems lurk....the rules have changed!
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Re: Hummingbird 798 - Too highm, too low?
[Re: Captain Chris]
#6291279
06/13/11 04:42 PM
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Joined: Apr 2011
Posts: 542
Western
Pro Angler
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Pro Angler
Joined: Apr 2011
Posts: 542 |
Oh yeah, that rubber piece! DUHHH Mine was packaged separately, almost like an after thought with it's own bag and instructions. Heres mine installed. 
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Re: Hummingbird 798 - Too highm, too low?
[Re: Western]
#6296621
06/14/11 11:40 PM
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Joined: Jan 2010
Posts: 853
Jackhammer
OP
Pro Angler
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OP
Pro Angler
Joined: Jan 2010
Posts: 853 |
Found the little plug you all mentioned. I installed it and I am 99% sure that will take care of the problem. I am getting terrific pictures and the center line of my transducer is dead at the bottom of the boat.
I had no problems with the quality of pics, just that rooster tail at above 15 MPH.
Thanks for all the help.
Jim
Diana, Texas
If Christ is not first in your life, then you're settling for second best.
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Re: Hummingbird 798 - Too highm, too low?
[Re: Jackhammer]
#6297308
06/15/11 03:12 AM
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Joined: Jan 2007
Posts: 19,722
Bobcat1
TFF Guru
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TFF Guru
Joined: Jan 2007
Posts: 19,722 |
Found the little plug you all mentioned. I installed it and I am 99% sure that will take care of the problem. I am getting terrific pictures and the center line of my transducer is dead at the bottom of the boat.
I had no problems with the quality of pics, just that rooster tail at above 15 MPH.
Thanks for all the help.
And you didn't have to spend $120 for a special mount!
Bobby Barnett
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