QUOTE (Tom00769 @ Mar 14 2009, 09:49 AM)

How long does a tank of air last?
The air tank is 2gal, and there is a 1gal methanol tank that we fill 3/4 of the way, so you have 2.25gal of air to .75gal of liquid. The reservoir is at 120psi, but the working pressure is 90psi. By the time the liquid is completely spent, you will still be above 90psi. This is of course assuming constant temperatures.
As far as how long the methanol lasts, it all depends. Roots/Twin-screw/turbo cars tend to go through it faster as they can make boost at part throttle. Centrifugal cars only make boost when your foot is to the floor, so it tends to last longer. If you are an animal behind a centrifugal engine it will last a week or two...just like any other kit, if you baby the car you can have it last months.