Outboard alternator

[Guest]

Hi there,

Having failed to find a reasonable priced replacement inboard for my Hurley 22, I'm now considering the outboard option.

My question is: How will I charge the batteries?

As far as I know it isn't possible to fit an altenator to your average o/b.

Does anyone have such as system in place, I'd be happy to be proved wrong

Thanks
Jim

 

[Joe_Cole]

Many outboards have a battery charging output. They don't produce as much power as an alternator on an inboard engine but are OK if used with a little care. Typically they seem to produce about 6amps.

Joe Cole

 

[yoda]

Seriously look at the solar panel option. I haven't charged a battery from any other source for 2 years now, so unless you intend to run fridges and other high power equipments take the easy option and fit a small panel.

Yoda

 

[terence]

yes no probbs you can get out bord chargers for about £150-200 they charge at 2amps good luck terence

 

[andyball]

I've had an '88 suzuki 8hp and a 2001 yamaha 8 fourstroke, both came with alternators and rectifiers as std. No regulator though,but not necessarily a problem with a large enough battery bank (I had 130AH),otherwise, the regulators can be bought.

 

[Guest]

Hi,

I have a Yamaha 9.9 four stroke and it charges at 6 amps - as do the hondas. I also have two 55 watt solar panels and they give me all the power I usually need connected up to a single 110AH battery. The only time I came to grief was when I forgot to unplug the fridge! (If you can really call a peltier effect coolbox a fridge.)

I now take the same coolbox but put three 2 litre bottles of ice inside and this usually lasts about 4 days to a week, depending on how many beers I consume.

Regards


Fred

Just because you're paranoid doesn't mean they aren't out to get you.

 

[Gordonmc]

The Hurley 22 I had until last year had a Suzuki 8 in the well and charged the battery with what is described as a lighting coil. Ie. designed to power little more than a running light.

It did charge the battery, but the length of time the engine was running in getting off the pontoon and back wasn't enough to do the job. Like a previous poster I bought a small solar panel and fitted it onto the well hatch and never had any more problems. The only restriction on power available was the stowage, the stb'd cockpit locker could only take a 70amp battery. Fine for a couple of lights at night and an LED cluster anchor light. Quickly drained by a 12v cool box.

For what its worth the main problem with the o/board in the well is engine venting. With the hatch shut (to keep the noise in) the airspace fills with fumes rising from the exhaust. In choosing an engine try and get one you can adapt to take a pipe off the exhaust and vent it underwater under the transom.

Good luck.

 

[Guest]

We have a fin keeled Hurley 22 "DancingDream" on the Hamble. She has never had an inborad engine only outboards.

We presently have a 6HP Johnson, designer recommendation was 6HP-9HP, we get about 4knots with the 6HP, presume you get another knot with 9HP. You should ask for a yacht propellor, rather than standard, usually no extra cost, makes a difference, can't go astern usually without one.

We bought anew 6HP OB two seasons ago, same size as previous, 6HP a bit lighter to lift out than 9HP, we were on a river mooring.

We charge from the outboard gives 4amp charge, usually keeps battery topped up and we keep a battery charger on board so we can charge in the marina if required. Engine usually running for at least an hour every trip (1/2 hour each way to Southampton Water).

With regards to fumes, we experienced this when hatch is open , however we have done a couple of things, firstly the exhaust backpressure vent which is under the engine is now connected via a felxible hose to a bronze bulhead fitting on the transom, so no exhuast is emitted in lazerette. secondly we have also mounted an extractor in the lazerette, which we switch on when engine is ticking over an sometime exhaust bubbles up from the the main underwater exhuast causing the engine to hunt as it starts to take in exhaut fumes. we just switch the extractor on as we need it, which isn't very often. Since we have made these mod's the engine as run smoothly and quietly with the hatch closed and no fumes.

 

[Guest]

Thanks guys, I stand corrected, all advice vey useful

Now, where did I put my screwdriver.

Cheers
Jim