Fuel Tank flow Test

[Sonex 772]

Hey All

Many years ago there was a formula on here on how to check the fuel flow rate coming from the tank. It was by putting in 1 gallon of fuel in the tank and then timing how fast it drained out and doing a calculation on what the flow rate would be, dose any one know what this formula is??

Thanks
Mike

[Bryan Cotton]

Mike,
If you time the gallon drain time in seconds, divide seconds by 3600 to get gallons per hour.

[lpaaruule]

I'm reluctant to do math where the world can see, but here goes....

If 1 gallon flowed out in 3 minutes and 22 seconds then I would calculate it this way:

3 min + 22 sec = 3 min + (22sec/60sec) = 3 min + 0.366 min = 3.366min

Then convert 3.366 min to hours by: 3.366min/60min = 0.0561hr

So if you want gallons per hour, since you only flowed 1 gallon, it would be 1 gallon / 0.0561 hr = 17.8 Gallons/Hour

[onex28]

Or, divide 3600 seconds ( 1 hour ) by 202 seconds ( the time to drain your 1 gallon ) and you arrive at
17.82 gallons per hour.