22 cruiser MPG

T

texasair

Member
We had 3) 22 cruisers loaded for a weeks travel here at Powell

Chiquitita with a Honda 90.

Sandpiper with twin Honda 40's

My boat, Bixby's Cub with a 90 Mercury Optimax injected 2 stroke.

We left Antelope Point with full fuel and traveled together at the same speeds along the same route.

When we filled up later at Dangling Rope each boat took almost exactly 16 gallons.

We had a little low RPM exploring but most of the time we were cruising at 16-19 MPH.

I did the calculations on our miles traveled and it came to 4.1 MPG.

3 different set ups and almost identical fuel burns. Interesting.

I don't know what props the other boats were running but I was running a 3 blade aluminum 13.25" x 17 pitch.
 
Yes, interesting. We used 41 gal of fuel to do 200 miles for an average of 4.9 mpg. About 25 of those miles were at displacement speed. On the twin honda's have 11 7/8 x 10 pitch stainless 3 blade props with top speed of 21.5 mph at 5700 rpm on Lake Powell.
 
Sounds about right. It takes x numbers of HP to push x numbers of pounds x numbers of MPH. If you have 3 similar motors, all four stroke all around 90HP they are going to burn about the same fuel.

Now as adeline points out his 70HP 2 stroke, a far less efficient method, get far less MPG. His 70 has to work harder to push the same load and burns, or more to the point does not burn just uses, more fuel to make the same HP.

I am willing to bet that if I put my 225 honda on a 22cdory it would get 4mpg, or sink.
 
Back
Top