How low will your tranny go?
Submitted by Swompa on Thu, 2015-06-25 16:28
Third go at the transducer install on my Dragonfly.
First location had me getting ground to about 15 knots, ONLY with two people in the back of the boat, but 6 knots with one person.
Second spot (attached) had the ground up to 9 knots regardless of where people were.
Third spot is on the flat spot just to the left. It is deep down with the bottom of the base plate sitting on the bottom of the hull. I will try this setup tomorrow.
I want to get this right as I have trouble finding ground and covering distance. 10 knots is a two hour trip to Rotto.....ain't nobody got time for that.
Am I on the right track?
Image Upload:
MattMiller
Posts: 4171
Date Joined: 15/06/09
Same
a mate of mine had a similar experience try to get good readings on his Dragonfly.
I think install no.5 had it reading ok to 15-18knots.
Swompa
Posts: 3783
Date Joined: 14/10/12
Dammit, my transome will be
Dammit, my transome will be like honeycomb
z00m
Posts: 1086
Date Joined: 10/05/14
I mounted mine (Raymarine
I mounted mine (Raymarine a78) closer to the centreline of the boat and low down like you have yours in the picture and it reads ground as fast a the boat can go (been up to 26 knots so far). If you have moved yours to the 'flat bit' to the left of the above picture then you will be in disturbed water from that strake. Hope it works for you though, stranger things have happened. The only propblem I find with those transducers is it tends to catch the ribbon weed on the little 'leg'. Probably why it's not supposed to be mounted so low
dodgy
Posts: 4563
Date Joined: 01/02/10
Something else to keep in
Something else to keep in mind.... Unless your outboard is a lh rotation the transducer should be mounted on the other side.
You want the transducer to be on the props downstroke side to minimise interference.
Does anyone know where the love of god goes, when the waves turn the minutes to hours?
Swompa
Posts: 3783
Date Joined: 14/10/12
It, and all of my previous
It, and all of my previous transducers were on the starboard side though due to all the patched holes on that side, I thought it would start fresh. I have it on the port side due to a ladder onthe starboard though if tomorrow doesn't work for me I will need to do a bit of work on the back of my boat as there is more silicone in it than a bucks night stripper
Deleted
Posts: 6265
Date Joined: 26/04/14
Nylon chopping board and
Nylon chopping board and sika flex till you find the best spot no more holes in Hull. This is how I mounted my deck wash intake and has not moved a mm
m.jamo
Posts: 44
Date Joined: 15/04/14
sorry mate
just had to laugh at how many times you have moved the transducer bloody things going to look like swiss cheese.
thats why i get the pros to fit them.
Take a fish boating.
Tradewind
Posts: 756
Date Joined: 18/09/12
I've got a Dragonfly too
I've got a Dragonfly too Swompa, still haven't found the right spot for the transducer either
You're not the first person i've heard of having the same issue with this transducer either
Swompa
Posts: 3783
Date Joined: 14/10/12
6 knots......
6 knots......
catch.fish
Posts: 150
Date Joined: 12/10/11
Dragonfly 7
Mine seems to read fine up to around 20-25 knots, will sometimes lose bottom but ive noticed it seems to be related to the automatic depth setting. If it drops out for a moment the auto depth range jumps straight to 300m+ and struggles to find the bottom again as the range keeps jumping all over the place from 1m to 300m+ while it tries to regain bottom. As soon as I set the range to manual and an appropriate depth it goes straight back to reading the bottom properly.
If I leave it on a manual depth setting I also find it drops out a lot less at speed - it's like the auto depth range loses bottom for a fraction of a second and throws the whole system off or something. Was also a bit laggy at first but upgrading firmware and keeping it in the shade seems to have fixed that, nice and snappy moving through menus now.
Other than the auto depth issue Im stoked with mine. It's light years better than the Garmin I had, was a great price and have already had some awesome results being able to clearly spot fish and structure. I took it over the Lena off Bunbury and was shocked how good the downvision worked, hit it at the right angle with steady speed and was like a photo could clearly see hand rails, door frames, individual fish etc. Great sounder for the price!
I've got it mounted pretty low on transom of a haines hunter V17R, can take a pic when I get home if you like.
Swompa
Posts: 3783
Date Joined: 14/10/12
I the current position
I the current position today, I would lose depth and even when stopped, it would take 30 seconds to re-find the bottom. I even went back to make sure there was no weed on it.
I will try the keel mount ( or just off to the side) and hopefully that will do it.
petermac
Posts: 2946
Date Joined: 03/03/10
my mate with a bar
mate of mine in Phuket that has a bar has a few trannys working for him they seem to do ok ahahhaah
Bryce Day
Posts: 812
Date Joined: 01/06/15
Shouldn't take 30 seconds to
Shouldn't take 30 seconds to get a depth!
Lastchance
Posts: 1272
Date Joined: 02/02/09
Woops!
Woops, misread the Title, totally different topic to what I was hoping for!
Carry on.
sandbar
Posts: 704
Date Joined: 25/10/09
starboard
have you tried the starboard side of the transom
Dale
Posts: 7930
Date Joined: 13/09/05
I saw a tranny in Dan Murphies in Kwinana today. Had me wondering until it talked.
"Just because you are a Character, Doesn't mean you have Character."
Mr Wolf
Swompa
Posts: 3783
Date Joined: 14/10/12
Did it take long to find the
Did it take long to find the bottom?
Dale
Posts: 7930
Date Joined: 13/09/05
No way Jose.
"Just because you are a Character, Doesn't mean you have Character."
Mr Wolf
just dhu it
Posts: 1081
Date Joined: 14/05/09
Vibration
yiu need to watch out how far you drop the bracket , from the photo the bracket arm looks plastic and not that strong if you in visage how much pressure is on the arm when the boats moving especially at speed causing to much movement on the tranny face , maybe different bracket or even try setting the tranny up in the bottom of the hull in temp wet box to ensure that's the problem, then you will know if you should buy a through hull unit.
Swompa
Posts: 3783
Date Joined: 14/10/12
Thanks guys. Got 15 knots
Thanks guys. Got 15 knots out of it in flat water so I will settle with that. Sick of putting holes in my boat...