Above is a photo of version 0.3.
Below are two photo of this early design on a Wheel Horse. The black plastic bucket is the gas filter. The last photo shows the converted engine and functioning gas producer. This Wheel Horse is now fueled with charcoal. There are two important issues that need to be correct in order for this to function. The first is that the charcoal needs to be 1/2″ in size and less. A lower percentage of 1/2″ size is better. Second issue is there needs to be no air leaks into the system.