First off, I'd like to say my thanks to DR for inventing this system, even if it does seem kind of simple now.
This is my fuel mix over water compression tank for use on my next project. As you can see, the hybrid is going to be kind of small. The chamber is 8" of SCH-80 1-1/4" seamless steel pipe.
The tank is made up of 12" of 2" SCH-40 PVC, with an endcap on the front and a threaded adapter and male plug on the back. The meter consists of a 1/4" x 6" SCH-40 steel pipe nipple which can fuel the tank up to a 2x/2 atm mix. I also added a small drain cock at the bottom to drain water after filling.
The water input is going to be from a modified bike pump with an input from a 2 liter camelback bladder work in a backpack. I don't want to use a garden hose, but if I have to, I've got a swivel female garden hose x 1/4" MNPT adapter I made.
I decided to fill the tank to 2 atmospheres for two reasons:
1.) I didn't want a huge 3" tank
2.) I need a way to mix the fuel mixture. A fan would get water in it, so I figured the injected air compressing it to a 2x/2 atm mix would mix the mixture good enough.
As you can also see, I don't have a Schrader added yet for air injection. I'm going to wait till I order all the steel from McMaster and get a threaded one from there.
Tell me what you think!