Alo ha,
Posted a video today with a Briggs converted from 4 cycle to 2 cycle, running on compressed air. First step to understanding Lee Rogers car.
http://www.youtube.com/watch?v=o5onMGsMkNA
Alaskastar and I pooled our knowledge and research,
may have resolved some unresolved questions
on the Lee Rogers air motor.
Alaskastar was explaining to me how air conditioning worked,
as we partially dismantled a small window mount air conditioner.
I had some questions as to how the unit functioned.
At the point where the freon is sprayed into the condenser,
I realized how this could relate to air fuel.
Lee Rogers used very small outlets on his exhaust,
which exited very cold.
The light came on.
I had thought that it was the power stroke
that caused the air to cool, but that was wrong.
Most info written explains it that way.
The cooling effect occurs as the air comes out
the small opening after the exhaust valve.
So this is how it must work-
Unrestricted atmosphere is allowed to enter the engine normally through the intake (first cycle- down-stroke),
which is then compressed (second cycle- upstroke).
On the first few degrees of the power down stroke (third cycle),
air pressure in the cylinder is high, well over the 85 psi. used by Lee.
But as the piston travels downward, just at the point where the pressure starts to drop below 85 psi.,
the air pressure solenoid valve in the former plug location is activated,
restoring pressure as the piston continues downward.
This is able to continue to maintain pressure all the way to the bottom of the pistons travel, if so desired.
More pressure-longer solenoid valve on time, more RPM.
This reasoning is entirely consistent
with all of the known facts about Lee's modification.
Lee recycled about 20% (or so he said) of the air used in the motor.
The reason this would be is because much of the air
performing the work is that which comes in through
the open carburetor/atmosphere.
That work would occur on the first few degrees
of downward movement on the power stroke.
We hope to have something in operation
on this concept in the next couple days,
Bill