Stator question

[boscoe99]

What are you suggesting that should be used then to recharge a battery after it has given up some electrical power to get the motor started?

If a battery is not fully charged when one wants to go boating should the battery not be used until an external charger recharges it?

I would agree with you that an outboard motor is not a battery charger. But, the electrical generation system on an outboard motor can and is used as a charging device to recharge a battery. The more current that is demanded of a battery then the more current that is needed to replenish the current withdrawn from the battery. Which is why outboard motor generators are outputting more and more electrical power.

Again, this is a strange conversation.

https://www.google.com/search?q=lead...2F%3B650%3B333

[TownsendsFJR1300]

Seems like a war on words.

No, the engine is NOT a separate "battery charger" that plugs into a 110 outlet.

However, the engine does indeed send excess electrical energy to the battery to help keep it charged.

Maybe not much in this case, but it DOES RE-CHARGE it.


Perhaps some *****ing going on...

[greasyshaft]

Seems like a war on words.

No, the engine is NOT a separate "battery charger" that plugs into a 110 outlet.

However, the engine does indeed send excess electrical energy to the battery to help keep it charged.


Maybe not much in this case, but it DOES RE-CHARGE it.


Perhaps some *****ing going on...

how does the engine send excess power to the battery? is it wireless? or perhaps through the boats hull?

[99yam40]

the point is. if you depend on you motor to charge a very depleted battery while running it may or may not fry the RR. Why take the chance of overworking the system
It is always best to start out with a charged battery and let the motor just maintain it.
Starter and T&T motors pull some juice so keep the charged battery up if possible before heading out for the day

[boscoe99]

how does the engine send excess power to the battery? is it wireless? or perhaps through the boats hull?

It sends excess power to the battery via the battery cables. The same way that your automobile and/or truck does.

Nominal voltage from a fully charged lead acid battery is approximately 12.7 volts. Voltage at the motor is zero. Turn the key on and a bit of current starts flowing from the battery to the motor. Turn the key to the start position and a whole bunch of current flows from the battery to the starting motor.

Once the motor is running the rectifier/regulator outputs 14.5 volts on most Yamaha's. The R/R is connected to the motor end of the battery cables. The higher voltage at the motor end of the battery cables, compared to the lower voltage on the battery, results in current flowing from the motor to the battery. That current, over time and depending upon the state of battery charge, will fully recharge the battery.

Simple and nifty. Oh, I am not buying the damaging the R/R part if the battery is low or depleted. The R/R puts out all of the current that it can possibly put out, all of the time. That current either flows to a battery or it is wasted in the form of heat. Thus the cooling fins on some R/R's and a heat exchanger on some R/R's.

[Mulletman]

***. We started out chasing a fuel rabbit and wound up after the energizer bunny. What I would like to know is what may be causing this engine to struggle to get up on plane? Could the stator be breaking down somehow after it warms up? And what kind of voltage does the ignition coils require to fire properly? Thanks.

[99yam40]

Did not think of that, I am used to automotive stuff as that is were I got some of my schooling many many years ago, I forget these outboard motors put out all they can all the time and just shunt off any excess voltage and current to ground.

[TownsendsFJR1300]

how does the engine send excess power to the battery? is it wireless? or perhaps through the boats hull?

Are you friggin kidding me?? How is your car battery hooked to the electrical system??? Thru the hull? Wireless??? Maybe thru electrons in the air... Jeez..


Your *****ing now, NO doubt...


Now, if you have something to contribute to the OPs issue, that'd be great.

[greasyshaft]

I'm sorry was just being a ****

[99yam40]

***. We started out chasing a fuel rabbit and wound up after the energizer bunny. What I would like to know is what may be causing this engine to struggle to get up on plane? Could the stator be breaking down somehow after it warms up? And what kind of voltage does the ignition coils require to fire properly? Thanks.

There are ways to test voltages but not much for testing for proper fuel to air ratio in the cylinders, so test what you can and the chase what you have to.

Sorry I cannot tell you what voltage has to drop to to cause problems .
But Rodbolt may

[zenoahphobic]

There are ways to test voltages but not much for testing for proper fuel to air ratio in the cylinders, so test what you can and the chase what you have to.

Sorry I cannot tell you what voltage has to drop to to cause problems .
But Rodbolt may

Thanks 99yam40 for steering back on course with your last point.

I don't understand why all this sparring, the OP wants an answer. You experts should, either tell him that particular model has poor charging,blows up stators, all of which are probably nonsense (does not charge batteries - really!) OR advise him at WHAT POINT THE FAILURE of the stator, and the subsequent discharging of the battery THE ENGINE STOPS!
,

[TownsendsFJR1300]

Ok. Thanks for some helpful advise. I've been chasing that fuel rabbit for a while now to the extent of completely draining the main tank, running on a 6 gallon tank, changing out the primer bulb and all fuel lines, cleaning vst, changing all internal filters and water seperator filter, new mechanical fuel pump. The high pressure pump maintains 38-42psi fuel pressure and all injectors cleaned and replaced. Where else could that elusive bunny be hiding?

Just a suggestion that may help. Especially if its looking fuel related and you've gone thru the system already.

Get some Yamaha "Ringfree". It a fuel system cleaner/top end cleaner. Mix it in your 6 gallon tank at 2 x's the recommended amount. It works extremly well and may help. It certainly can't hurt.. Run the engine as high a RPM (on the water) as you can and let it work. It may take some time(may not fix it at all depending on what the problem is). Sneak the throttle up slowly (see below)..


As a side note, about 3 months ago, we took my F150 out (after sitting for months-run on muffs but not underway), fishing. I opened it up to 5800 and it dropped down to 4800, no alarms...

NEVER done that BEFORE, ever.

Backed off the throttle, eased it back up to 5800, same thing. Did it one more time, took off and ran with NO more issues.

Its been out several times since then and checked, running like a top.. I strongly suspect a small piece of crap got in an injector and eventually got blown out on the third try...