trick for the inverter!

Niander

Niander

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I use an inverter for running my power tools
grinder[most useful]
jigsaw
sander
etc
my inverter is only 300 w
so when i try to start the 600w grinder it starts but then the inverter shuts down but I've found that if i quickly switch off the inverter and back on [when the grinder is still spinning]again the grinder will run fine..sweet eh?

great if you dnt have a genny just power off 12v

trick for the inverter!
 
Another trick for the inverter.

After several weeks working on the boat, without being able to charge the batteries, I found the engine start battery was too low to start the engine. Also the domestic batteries were no better. So I borrowed a trolley, so that I could take the battery across the rough field to my car the next day.

I suddenly realized that if I plugged the inverter into the domestic batteries, I could use my battery charger. Worked a treat.

The reason for your success is that most motors draw more current on start up.

Philip
 
[ QUOTE ]
I found the engine start battery was too low to start the engine. Also the domestic batteries were no better.

[/ QUOTE ]In that situation I find the easiest solution is to dig out the starting handle and use that to start the engine (Bukh DV24) /forums/images/graemlins/grin.gif

No worries about flat batteries.

Plan "B" is to start the 240v genny and let the charger do its thing but I prefer the hand start method. - It's a pity the marinised tractor engines fitted to many boats today do not have a hand start facility.
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hammer.thumb.gif
"Artificial intelligence is no match for natural stupidity"
sailroom <span style="color:red">The place to auction your previously loved boatie bits</span>
 
I'm not sure I understand that.
Did you use your inverter plugged into flat batteries to charge flat batteries?
You've invented perpetual motion! /forums/images/graemlins/smile.gif
 
"It's a pity the marinised tractor engines fitted to many boats today do not have a hand start facility."


you would have to have arms like garth,i remember the days of petrol parrafin tractors and hand starting engines on combines and bailers etc,not easy,it was bad enough starting the car,but i don't supose many of you had a "car with a starting handle"
could this be a new topic for the lounge?
 
Started several ng diesel locos over the years. Easiest is crack the flywheel like whatsit then clutch the flywheel to the motor to spin and start. No room on a boat for that kind of flywheel. Praise Heaven for starter motors and ye shall render that praise by careful treatment of the batteries:-)
 
[ QUOTE ]
Does it keep working when you apply a load?

[/ QUOTE ]

If i apply to much pressure it shuts down[just be more gentle]...switch off and on again
my 5oo w jigsaw works fine.
 
Starting aid for bigger diesels - If the batteries are just too weak to get it going, I take the air filter off, put my palm over the intake and crank with what remains of the batteries. It's the same as de-compressing as there's no air being drawn in. Once it's whizzing round on freewheel, I take my hand off the intake and it fires. - just like that. (perkins 4108)
 
I think he means that neither battery had enough ooomph to start the engine, but had enough juice to power an invertor, which in turn powered a battery charger to charge up the other battery. Considereing the losses that would have occured using one battery to charge up the other, a better result would have been to emergency parallel the batteries.
 
[ QUOTE ]
"It's a pity the marinised tractor engines fitted to many boats today do not have a hand start facility."

[/ QUOTE ]

I seem to recall from my offshore days that the 'survival craft' were fitted with an hydraulic starter which was primed with a 'foot pump' I think we also used a small 'firing' charge.
From memory we would pump the system, insert a new 'charge' and trip the release, usually a foot trigger. This meant that no matter what state the batteries we could always start the craft and evacuate the platform. This was in the late 70's on the Ekofisk field so may not tally with others memories, of course I could just be wrong!
Mal
 
[ QUOTE ]
[ QUOTE ]
It's a pity the marinised tractor engines fitted to many boats today do not have a hand start facility.

[/ QUOTE ]you would have to have arms like garth,<snip>,but i don't supose many of you had a "car with a starting handle"
could this be a new topic for the lounge?

[/ QUOTE ]Why? The Bukh starts quite easily on the handle. - Dont be fooled by the avatar - I am actually a 5 stone weakling /forums/images/graemlins/ooo.gif

As for your comments about cars with starting handles - I still have one - well landrover actually- raises a few eye brows though when I pull out the starting handle and a real laugh when I take her for an MOT. /forums/images/graemlins/grin.gif
--------------------
hammer.thumb.gif
"Artificial intelligence is no match for natural stupidity"
sailroom <span style="color:red">The place to auction your previously loved boatie bits</span>
 
[ QUOTE ]
[ QUOTE ]
"It's a pity the marinised tractor engines fitted to many boats today do not have a hand start facility."

[/ QUOTE ]

I seem to recall from my offshore days that the 'survival craft' were fitted with an hydraulic starter which was primed with a 'foot pump' I think we also used a small 'firing' charge.
From memory we would pump the system, insert a new 'charge' and trip the release, usually a foot trigger. This meant that no matter what state the batteries we could always start the craft and evacuate the platform. This was in the late 70's on the Ekofisk field so may not tally with others memories, of course I could just be wrong!
Mal

[/ QUOTE ]

Absolutely correct,and still the same today
 
The time it starts up 180 degree out of phase would be interesting especially if you were quick.

Not recommended.

Never had a prob done it hundreds of times!...:P

Mind you must admit to putting stronger fuses in it...lol!
damn good inverter!
 
Re battery charging via an inverter.

All the batteries were reading about 12 volts, and the engine would not start. There is no provision for a starting handle on my Perkins 4108.

I had 300 Ah available @ 12 volts. The inverter will work until the voltage of the three battery banks drop to 10.5 Volts. So I had plenty of power to spare, even allowing for circuit losses.

I like the idea of blocking the air intake to decompress the engine, might have worked.

Philip
 
[ QUOTE ]
Starting aid for bigger diesels - If the batteries are just too weak to get it going, I take the air filter off, put my palm over the intake and crank with what remains of the batteries. It's the same as de-compressing as there's no air being drawn in. Once it's whizzing round on freewheel, I take my hand off the intake and it fires. - just like that. (perkins 4108)

[/ QUOTE ]

surely that will be harder work for the engine [as its trying to suck on a vacuum and still compress whats above the piston]

than using the decompressor....dnt understand how it can be better than using the decompressor[btw why not use the decompressor?].
 
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