Help with Wiring Diagram

[drevil]

Hi all

I was given a trim guage the other day and was wondering if anyone had any tips for how to connect it.

Does anybody use a trim guage? Are they useful?

[smiley=2thumbsup.gif]

[peterbo3]

Hi Doc,
Where you been?
I use my trim n tilt gauge all the time. A quick glance tells you where the motor is trimmed at. Handy if you have been trolling with the motor up-prevents embarrassment caused trying to get onto the plane with too much trim out. 8) 8) 8) 8) :-[ :-[ :-[ :-[
But with the boat up & running I like to watch the tacho as I am trimming out. The revs will climb until the best trim position is reached. Too much trim & she starts to race. #:oOr you can do by ear if you like.
As for the wiring, go to i boats (US site) & use the search function. Hope this is of some use.

[drevil]

Gidday Peter. I've been around, just not posting very much. I have been in a cycle of working too much and not getting the boat out anywhere as much as I've wanted, but I seem to have that mostly behind me know. ;)

Maight be asilly questions, but why troll with the motor up? Is it for control over the troll speed?

Thanks for the info...I'll give iboats a shot.

[Lucky_Phill]

Good question, DrEvil ?

Phill

[Cloud_9]

to slow the troll ifin the motor doesn't like to idle slow
you can have revs alittle higher but go slow
harder to control the boat though

Cheers Cloud 9

[Big_Kev]

Trolling with the motor trimmed up a little will leave more of a wash pattern behind the boat.
It is at the back of this wash that you should run your lures.
From below it is suppose to resemble frightened smaller fish breaking the surface of the water.
ie; Bigger fish eat smaller fish.
As previously posted it can also help to control the troll speed bringing it down a touch also.(ie; four stroke owners do not experience this problem.dig dig).
Cheers Kev.

[Big_Kev]

READING THE WASH
Before we put the lures out, let’s slow down to an average trolling speed of about 7 knots and have a look at the Strike Zone, the area between the transom and the end of the prop wash or turbulence created by the boat hull. You can read the wash behind a boat in a similar manner to reading the water around a headland, island, reef or beach.

The features of the wash are shown in the adjacent figure. (Fig 1. Reading the Wash) Down the center is the prop wash, a very concentrated boiling confusion of white water, or so it seems. This white water is at its deepest at the transom, with the maximum depth at the props. Perhaps it is not as deep as you might have imagined, and comes very close to the surface within a few feet of the props. Although it looks like solid white water, it is quite translucent, allowing enough light to enable even small tuna to find tiny lures in the midst of it.

Along the side of the prop wash there are alleys of clearer water with little or no white water turbulence; a nice place to run a lure, as it would be very visible. Remember though that predators are used to chasing tiny baitfish that are very well camouflaged. No matter what size or colour your lure is, it will show up very clearly no matter where you run it, as will your leaders and rigging.

Notice the white water coming off the sides of the boat. This Side Wash is very shallow and almost transparent consisting mostly of surface bubbles. A lure that is run in this area is probably more visible than in any other area, as the frothy white surface will highlight the lure’s silhouette.

Every boat has a different wash format at every speed, in every sea condition and in every direction traveled. For example the wash is longer going into a current than it is going with it. To maintain the lures position you may lengthen a lures distance going into the current and shorten it going down current.

[Big_Kev]

It is possible that the wash itself may appear to be a shoal of tiny baitfish foaming the surface in a feeding frenzy, or perhaps they have come to know that the motor noise and vibration could mean a trawler dumping trash over the side resulting in an easy meal, perhaps it does attract small predators like striped tuna and frigate mackerel that search the white water for a feed or camouflage, this may in turn attract larger predators. Regardless of what we imagine the wash represents to fish the boat does not in any way scare these predators. The larger, bolder predators have even less fear and will come in so close to the transom they almost ram it as if they were attracted to it.

[Big_Kev]

Sorry; Acknowelgement to Peter Pakula "The Art of Trolling"
Cheers Kev.

[drevil]

Geez, Kev. I didn't realise there was so much to it. I would have thought the less wash & turbulence the better so you don't scare the fish away.

I would guess that, since trolling is done at a slow speed, the wash trail won't be very long. So therefore you are dropping a lure that sits only, say, 5-10 metres from the boat? I guess it depends on the fish you are chasing and how deep they feed.

Cheers... ;)

[littlejim]

hey,

anyone going to tell him how to connect the wires?
Drevil, I haven't got my manual here it's down the coast, so I can only give you a rough idea. You only mention the gauge, but obviously there has to be a 'sender' down the back on the motor that moves up and down in concert with the motor. This should have at least two wires ( plus and minus) that would connect to earth and the gauge. The plus would have to go via the ignition switch and a fuse.

This is just to get you started, best to have a circuit diagram (would be in most motor manuals) and some of our forum members will be experts at this sort of thing. (Not me.)

[Big_Kev]

Doc you will need to be more than five to ten meters from the back of the boat, though this is where you will run the bigest lure.
ie; smaller lures further back.
If you look at the bow waves coming off the back of the boat when doing six to eight knots, the distance between the waves peak to peak will be the equivelent to the length of the boat at the water line.
You will need to be about five boat lengths back for your corner lures.
I can recomend you go to the Marlin Bar and read up on the art of trolling if you want to learn more.
Cheers Kev

[aido]

it would help if dr evil said what type and size of motor he has.
he has a gauge (indicator), and if he is lucky the sender unit might
already be fitted on the leg. these are usually a plastic block mounted
on the outboard bracket that senses the leg angle via a spring loaded
arm which is part of the plastic block sender unit.
tilt the motor right up and it should be visable on the motor bracket.

i can't think though why he would have a sender unit fitted and no indicator.
but anyhow, there are usually 4 wires comming from the sender to the indicator
via the engine wiring harness. don't know why 4 wires, i would imagine the
sender is a simple potentiometer (rheostat), and that could be done with 2 wires
only, but i don't design the bloody things.
so, a quick look at the suzi has 4 wires, the yammy has 4 and looking at mercury,
they seem to get by with 2.
sure enough, it would be best to match the sender to the indicator.
mercury says a quick test with a voltmeter across the 2 wires, yellow and black/orange
should give 2.7 volts dc full up and 0.6 volts dc full down.
good luck with the diagrams. i could help with yamaha or mercury. send me a msg
if you need specifics more than this.
best regards,
aido.
disclaimer,
my advise is not guaranteed to be worth more than what you paid for it.
;D ;D ;D ;D ;D

[drevil]

Hi Aido - I have a Merc 100, about 1990 vintage.

Thanks guys for your advice, I'll check it out later this week. Interesting post, this one, we seem to have two threads going at once. The trolling one is an interesting topic worthy of its own post.

[Jackko]

Mate what is your e mail I have a diagram its in PDF format but its 240 KB dont know if I can post it here...

[drevil]

Jacko, it's shagmail@optusnet.com.au

Thanks for that.