Does this machine exsist?

[kodibass]

I have been looking for a machine to start old electric start outboards, I have been working on the smaller outboards for a couple years, and want to start working on the larger ones, I hate trying to pull start the larger ones but don't want to keep batteries around just for the occasional larger motor that i might get my hands on, is there a charger/starter that would give me on demand 12 volts that would crank a old hard to start engine without the need to hook it up to a battery? I don't want a portable power pack type, something that plugs into 110v and would give me a good strong cranking 12 volts whenever I needed it, I come across allot of old electric start generators, pumps etc. I was in a shop a few years ago and saw this guy starting a 70 hp rude hooked straight to a machine and starting it like this? any leads would be appreciated.

 

[Silvertip]

Re: Does this machine exsist?

What you saw was a combination battery charger/booster setup much like car dealers have in their shops. The rig consists of a high output battery charger and a couple of batteries. You can wheel this thing up to a car, hook up the cables and start it. Or it can be used to charge the internal batteries or the battery in a car. I'm not aware of anything that you can simply plug into AC power and start a car or outboard. It still requires a battery. Running an outboard without a battery can toast the rectifier and/or regulator if it has one. Why bother with such a complex deal in the first place when a plain old car battery will serve the purpose cheaply and effectively.

 

[roscoe]

Re: Does this machine exsist?

Like Silvertip said, regardless of what you want, you need a battery connected to these engines while they are running or you are going to start frying components.

 

[PGFISHER]

Re: Does this machine exsist?

Silvertip is right. These units need a load. Amperage x resistance = volts. If there is no load (resistance), amperage goes to infinity and fries the weakest part of the system.

 

[kodibass]

Re: Does this machine exsist?

Went to start an old single cylinder 6 hp diesel electric start the other day and my 2 month old spare battery would not turn it over fast, had to charge battery for cpl hours, thats when I thought sure would be nice to have something that just plugged into the wall and would provide good cranking and proper resistance anytime I needed it, never hurts to ask thanks

 

[Silvertip]

Re: Does this machine exsist?

A two month old battery just sitting around may have been discharged. Diesel engines have very high compression so they do take much more current to spin them over. The battery you have may also be undersized for the task. The starter may actually require 24 volts as well but that's highly unlikely on a single cylinder.

 

[Doernuth]

Re: Does this machine exsist?

And don't leave the battery sitting directly on a concrete floor. This will drain it over time.

 

[Fl_Richard]

Re: Does this machine exsist?

Battery on concrete floor is fine. Old wives tail...

 

[rndn]

Re: Does this machine exsist?

Battery on concrete floor is fine. Old wives tail...

Totally correct. Just an old story.

 

[kodibass]

Re: Does this machine exsist?

Now there is a thought' ' Please forgive me for coming off as stupid but I just don't know much about the electric start thing, I have only ever messed with the small manual start engines, but I live in a fishing town and many of the larger fishing vessels do use 18 & 24 volt systems It may indeed be 24 volt starter. And in addition to electrical stuff I know next to nothing about diesel engines I picked it up at the dump because it just looked kooool!

 

[PGFISHER]

Re: Does this machine exsist?

And don't leave the battery sitting directly on a concrete floor. This will drain it over time.

This was true way back when batteries had tar cases; modern bateries have plastic cases and do not "leak" voltage.

 

[Chris1956]

Re: Does this machine exsist?

Kodi, A single battery permanently connected to a small charger will work pretty well. The small charger will keep the batery topped off for when you need it, and the battery will provide the starting power.

If you used a large 110VAC transformer and a large full-wave rectifier to simulate a battery, the current used would pop your breaker. A starter could use 200Amps @ 12 V (2400 Watts), which exceed a standard 15A and 20A US house circuit capacity. I also do not know what effect that device would have on an alternator or stator/rectifier or VR.

 

[kodibass]

Re: Does this machine exsist?

Thanks Chris'
I just found a old 20 watt solar pannel at a junk shop, I bought a hybrid combo deep cycle/starting battery? I am going to look into hooking it to the solar pannel but I have to find some kind od dieode ot something so it won't over-charge? the pannel only has a little box mounted on the back and when you open the box there are 2 screws one marked pos-+ and the other neg- any help would be appreciated.

 

[Chris1956]

Re: Does this machine exsist?

I think you will need a small diode to keep the battery from discharging back into the solar panel. A Radio Shack place will have one. You put it in series between the + on the solar panel, and the plus on the battery. Use an analog ohm meter, with the red and black leads on the diode to determine wich way to install it. Install with contunity from the panel to the battery.

Don't worry about overcharging. 20W is not enough current to worry about.