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Briggs automation up date
By Old F, Section Homebrewed Electricity Posted on Mon Nov 22nd, 2004 at 05:48:30 PM MST
Stage one complete Its alive! : )

Briggs automation up date
Stage one complete Its alive! : )
I have it key starting and manual charging
The ½ HP 12 volt pm motor is rated at 1750 rpm and 39 amp continues .
At 2500 rpm I am getting 15 amps at 13.9 volts in to a close to fully charged battery .
For a short time I ran it up to 2900 rpm and was getting 16 volt at 30 amps.
Not to bad for an odd ball collection of junk I had laying around : )
Stage two will be getting a proper frame welded up an start looking for a 1 to 2hp pm motor for a better match for the 5 HP Briggs
And wait for the parts I have ordered for the dump load charge controller I will use as the engine kill switch. An latter as an input for a PLC
Stage three will be setting up the PLC to set the choke and start the engine when the batteries are low.
It will have a fail safe if after three failed start attempts
It will sound an alarm and shut down in till its reset.
Have so much fun it should be illegal
Old F

Briggs automation up date | 6 comments (6 topical, 0 editorial)

Re: Briggs automation up date (3.00 / 0) (#1)
by domwild (domwild at hotmail dot com) on Tue Nov 23rd, 2004 at 03:23:13 AM MST
(User Info)

So much fun should be made illegal or at least taxed accordingly.

dominic

dom There is one thing money cannot buy: POVERTY!

Re: Briggs automation up date (3.00 / 0) (#2)
by srnoth on Tue Nov 23rd, 2004 at 03:44:20 PM MST
(User Info)

Very cool,

I kept checking your last post to see if you had updated it. I have been wanting to do what you are doing for quite a while. I can't wait to hear how the automation process goes. Let us know right a way.

Hey I have an idea though, those brigs engines will last a lot longer if you don't run them at top speed. I have been thinking about a way of automatically controlling the engine speed, so that the charging rate would remain constant (ie. if, while running the engine, you also put load on the batteries, it would speed up to keep up the optimum charging rate, and slow down when the load is removed, to prevent it charging 2 fast. Every though of this? Your engine should last a lot longer if it's only going as fast as it needs to.

Anyway,
Good luck with this project,
Keep having fun,
Cheers,
Stephen.

Re: Briggs automation up date (3.00 / 0) (#3)
by Old F on Tue Nov 23rd, 2004 at 05:02:04 PM MST
(User Info) http://www.oldf.homestead.com

Hi Stephen

My biggest problem with this project is time so it will most likely go in fits an starts.
But when I am far enough along I will put my findings in a diary or on my web page.
The biggest problem with small Briggs engines is not really the speed but poor lubrication .
They need an oil change every 24 hours of operation If you could increase the oil capacity or find a way to filter it when its running. They would hold up a lot longer.

Old F

If your not haveing fun your doing somthing wrong : )

[ Parent ]

Re: Briggs automation up date (3.00 / 0) (#5)
by RedLance on Sat Nov 27th, 2004 at 04:51:59 PM MST
(User Info)

Most of these small Briggs engines have 2 drain plugs, and 2 filler plugs. Screw a hose into one drain plug, run it through a small belt drive pump, through a filter, and back into one of the fill plugs. Depending on the pump, you might even be able to make a right angle, when the filtered oil re-enters the engine, so the oil shoots up twords the piston. Just put a pulley behind your dove connector to run the oil pump. Should be able to rig up an old car oil pump to be belt driven.

Just a thought
Brian

[ Parent ]

Re: Briggs automation up date (3.00 / 0) (#6)
by srnoth on Sat Nov 27th, 2004 at 06:29:35 PM MST
(User Info)

Spot on RedLance. That is just what we need to do. My 5hp Brigs engine has, as you say 2 filler plugs, and atleast one drain plug. I will look into getting a used automotive oil pump, and beltdrive is along with my alternator. Who knows, since it does not need to be a very high capacity pump, a small 12v electric one might work just fine.

That way the durability of the engine should increase greatly.

Cheers,
Stephen.

[ Parent ]

Re: Briggs automation up date (3.00 / 0) (#4)
by ghurd on Wed Nov 24th, 2004 at 12:49:44 AM MST
(User Info)

I will surely be watching for updates!
This is very interesting.
G-

Briggs automation up date | 6 comments (6 topical, 0 editorial)

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