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Posts: 450
Location: Waconia, MN | I just had a Helix 9 DI installed and had my boat out for the first time this past weekend on Mille Lacs and everything is working awesome, but I do however have one question. I noticed that at high speed (30 MPH or higher) it seems that I my sonar loses bottom, or the graph portion becomes very faint in color and I also noticed that my depth reading went to from 14ft to 60 ft. and we all know that Mille Lacs is not 60 feet, but at slower speed its perfect, and I’m not on the DI screen at high speeds.
Any ideas?
I was thinking that maybe I need to mess around with sensitivity maybe?
Thanks
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Posts: 323
Location: Elk River, MN | The sonar won't work at higher speeds, so that will cause erratic depth readings and sonar image. If that bothers you enough you can swap out the transducer with a high speed transducer |
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Posts: 450
Location: Waconia, MN | Just finished up a chat with a HB rep and they said I should try adjusting the ducer ( tilt the ducer down a click or two) and if that doesn't work, a 2nd ducer and Y cable may be required. |
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Posts: 323
Location: Elk River, MN | Yeah basically the transducers are not the best at running at high speeds so you either have to try adjusting it so that it gets down into cleaner water or add a second ducer meant for higher speeds, or a through-hull unit. Often you might end up with a rooster tail if you have it pointed down into the water too much below the hull, but that's the tradeoff for getting accurate readings at speed |
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Posts: 548
Location: MN | You will also want to match the page (I think) speed to boat speed for best results.
Nick |
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Posts: 1096
Location: Hayward, WI | I don't think that you can add a high speed ducer to a DI unit with a y cable. SI units only. |
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Posts: 444
Location: Duluth, MN | Before you spend money and the hassle of installing another transducer ask yourself do you really need to see the bottom when going that fast. Your not really getting any valid info...and i'm betting your mostly watching your gps map for navigation so what good does seeing the bottom at 30-40 mph do.
I get that people really want to be able to see it but i'm not sure it really does any good. |
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Posts: 323
Location: Elk River, MN | That's kind of where I'm at with that too bob, I'd maybe see if you can adjust the transducer position and see if that helps, otherwise I focus more on the maps anyhow, i'm not going to see anything going 40 on sonar. |
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Posts: 450
Location: Waconia, MN | I totally agree and it’s not the end of the world, just wanted to see if I was missing anything. I made the switch from Lowrance to HB, so these are new to me. I talked with HB and the people that did the install and it also has to do with my boat being aluminum, and possibly some air getting under the ducer, and they said I could adjust it and it could help me see it a little higher speed.
My life will go on, love the units. Now I just need to figure out all the little tricks, and thank god for YouTube!
Thanks for all the info guys.
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Posts: 397
| I made the same switch from lowrance to HB and the lowrance had to be perfectly level so that's how I put the HB one. tilt the transducer down. I mounted mine level and I had the same problem. I moved so it is ever so slightly pointing down and now it reads perfect |
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Posts: 548
Location: MN | I have my transducer mounted right at bottom of hull on my Pro v.
Used a straight edge and lined up the middle of transducer with bottom of hull on starboard side.
This is away from turbulence caused by Mercury prop.
I can see bottom with DI at 30+ mph.
Sure it's not accurate the paging is set at about 4 mph.
But it does see bottom at speed.
Nick
Edited by Nick59 7/7/2016 11:35 AM
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Posts: 546
Location: MN | kjgmh - 7/7/2016 10:11 AM
I don't think that you can add a high speed ducer to a DI unit with a y cable. SI units only.
Correct. Only SI units are compatible with Y cable setups. However, you can install a transducer switch to run the DI or the high speed 2D transducer at the flip of a switch. The model is a a TS3. http://www.humminbird.com/Products/TS3/ |
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Posts: 548
Location: MN | OK disclaimer here.
I meant to say chart speed, not page speed. |
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Posts: 142
Location: Appleton, WI | Plug DI into si side of y cable and try it. Check pms |
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Posts: 450
Location: Waconia, MN | Thanks for all the info guys!
I will be messing around with the unit this weekend and hopefully get it dialed in.
Have a great weekend! |
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Posts: 546
Location: MN | PeonPETA - 7/7/2016 8:29 PM
Plug DI into si side of y cable and try it. Check pms
Y cables are designed to work only with SI transducers, not DI |
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Posts: 117
| If it’s an aluminum boat you will likely need to play with the exact position of the transducer. I had a humminbird transducer on my lund, it definitely took some time playing with the micro-adjustment to get the best readings. At higher speeds you will get a lot of feedback, and at some point you will lose the “picture” of the bottom but keep the numerical readout, then at some point you will lose even the numerical readout. My lund lost the picture in the low 30’s mph and kept the numerical readout up to about 40-ish, sometimes more if the water was exactly right. This was two different sonars, so I assume they are all at least similar. FYI, I have been told that people who use the flip-up Transducer Shield and Saver brand of stern mount can get readings at higher speeds because it has a plate that smooths the water coming to it or something like that—they make a great product so I don’t doubt that’s true—worth a call to them.
It’s true that whatever you are seeing is behind the boat and less useful, but it still allows you to easily see a rising/falling bottom and depth (without having to focus on a number) so I find it helpful to visually correlate against what I’m seeing on the chart. For this reason I think it’s worth spending the time to get it right.
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Posts: 142
Location: Appleton, WI | mtcook16 - 7/8/2016 8:54 AM
PeonPETA - 7/7/2016 8:29 PM
Plug DI into si side of y cable and try it. Check pms
Y cables are designed to work only with SI transducers, not DI
By the label you're right. However... it is confirmed, tested, and backed up by Humminbird as an option that works. Thus my statement. More info in your pm box don't want to post external links.
Edited by PeonPETA 7/8/2016 12:37 PM
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Posts: 546
Location: MN | Well, I stand corrected-you can use it to rig a DI/2D setup, as well as SI/2D, based on the new information from Humminbird. I appreciate it.
Edited by mtcook16 7/8/2016 3:32 PM
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