GPH Used at Various RPMs

[Eric Ballard]

I was curious about my fuel usage and did some testing with 15 gallons of gas in the tank and 280 lbs of passenger. I'm not sure the load has an effect on RPM to GPH. I wish I would have logged the speed too. I will next time, but basically, at WOT I'm at 44/45 MPH and at 7000 RPMs I'm at about 30 - 35 if my memory is right.

What are others getting? I'm also curious about the 192s and 195s.

3000 rpm 1.5 gph
4000 rpm 3 gph
5000 rpm 5 gph
6000 rpm 6.4 gph
7000 rpm 9.2 gph
WOT 13 gph

 

[scokill]

Boattest.com They already did the work for you too.

RPM MPH Knots GPH MPG NMPG Stat. Mile NM dBa
1250 3.6 3.1 0.5 7.2 6.3 194 169 72
2000 5.3 4.6 1.0 5.3 4.6 143 124 75
2500 5.8 5.0 1.3 4.4 3.9 119 104 78
3000 6.8 5.9 2.1 3.3 2.9 89 77 78
3500 7.3 6.3 2.8 2.6 2.3 70 61 76
4000 8.3 7.2 3.6 2.3 2.0 63 55 75
4500 10.1 8.8 5.1 2.0 1.7 53 46 79
5000 24.4 21.2 6.7 3.6 3.2 98 85 85
5500 30.1 26.2 8.7 3.5 3.0 93 81 85
6000 34.5 30.0 10.8 3.2 2.8 86 75 84
6500 40.4 35.1 13.7 3.0 2.6 80 69 84
7000 45.6 39.7 16.1 2.8 2.5 77 67 85
7500 52.3 45.5 20.5 2.6 2.2 69 60 92
All fuel consumption numbers are the total for all engines in the boat. Speeds are measured with Stalker ProSports radar gun or GPS. Fuel consumption (gallons per hour) measured with Floscan digital fuel-flow meter or by on-board factory-installed diagnostic instruments. Range is based on 90% of published fuel capacity. Sound levels determined using Radio Shack digital decibel meter on A scale. 68 dBA is the level of normal conversation. Time to plane is measured from start of acceleration to formation of rooster tail behind boat.

Performance Chart

Acceleration Times & Test Conditions
Time To Plane N/A
0 to 30 5.9 sec.
Ratio 0:00
Props 3-blade SS
Load 2 persons, full fuel, no water, 50 lbs. of gear
Climate 93 deg., 66 humid.; wind: 0-5 mph; seas: calm

 

[Eric Ballard]

Not sure how I didn't see this before. I definitely saw the boattest.com video.

My numbers are pretty much right on. Good to know!

 

[scokill]

Not sure how I didn't see this before. I definitely saw the boattest.com video.

My numbers are pretty much right on. Good to know!

View attachment 58543

You need to go to work for them!