Magneto Water Spark Circuit
Started by Aaron · · 6 posts · last reply 18 April 2010
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#1 ·
Hi all, this tread is for applying Luc's spark method specifically to magneto systems.
Here is a touch on magnetos that I got from some old Keely net article:
If that is all one does to the engine, then there is no external energy
inputs, such as a battery. The ignition system on the standard Briggs &
Stratton 3HP lawnmover engine is called a "Magneto Ignition System" (MIS).
The MIS works as follows from start-up (very basic):
(a) The manual starter cord is pulled
causing the flywheel (with magnets
mounted on it) to turn.
(b) The flywheel then causes the crankshaft,
camshaft, and piston to which is
connected, to move, as well as causing
the magnets to pass by the ignition
coil, which induce a current and thus
voltage to flow through the coil.
(c) (when point(s) are closed)
As the flywheel magnet passes by the
ignition coil, the magnet in motion
creates an electric current in the
primary circuit, which is completed
to ground at both ends because the
crankshaft lobe has allowed the
moveable breaker points to close.
(d) (when point(s) are opened)
The flywhell magnet has passed by.
The crankshaft lobe opens the breaker
points, causing the electromagnetically
charged field of the primary circuit
to collapse upon the secondary circuit.
This results in high-voltage current to
the spark plug- the terminal of the
secondary circuit. -
#2 ·
Magneto Polarity
Most lawnmowers I've seen have the body of the engine as positive and the top of the plug is negative...so opposite of most cars.
The magneto has 2 leads from it.
One is a skinny lead (positive) that goes to the body of the motor.
One lead is fat and (negative) and goes to the top of the plug.
If someone wanted to reverse polarity and do this:
Take skinny wire (positive) and put it to the top of the plug AND
Take fat wire and put that to the body of the engine....
would it be as simple as that to make it run with the engine being the ground? -
#3 ·
RE: Magneto
ZeroFossilFuel has just made a very kool video on changing the timing in a lawnmower. He shows how to adjust the timing, and how he intends to modify the engine for hydrogen.
YouTube - #113 ICE mods for 100% HHO, Phase 1, part 1 of 2
YouTube - #114 ICE mods for 100% HHO, Phase 1, part 2 of 2
He did a great job of showing step by step, and all of the concerned parts. -
#4 ·
magneto plasma
I had this wrong, the skinny lead is basically a shorting wire. When it is in contact with the body, it is shorting the magneto so that it will not run. The lawnmower handle, if disengaged will cause that wire to connect to the body and shut off the motor.Aaron wrote:
The magneto has 2 leads from it.
One is a skinny lead (positive) that goes to the body of the motor.
One lead is fat and (negative) and goes to the top of the plug.
When disconnected, it isn't shorted and the motor will run. -
#5 ·
any magneto plasma results?
Has anyone had ANY success whatsoever using the stock magneto to get the plasma effect? -
#6 ·
any updates with this? I'm going to start this project.
GEET first, then plasma ignition circuit. 5-10HP OHV Honda motor, I got for $20.
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