With or without chines?
you will pick up a little speed with chines but I would say anywhere from 25-30 MPH for a 22'.
The 22 is a good size boat, not real heavy but still big enough to do the job.
If you contact bennington directly I am sure someone can tell you exactly how fast that combination will go.
The number is 574-294-6336
I just bought a 2008 Bennington 2075Rli SSR with the ESP and a 150HP Yamaha and am getting around 38-39 MPH. SturgeonLake, i noticed you have a larger boat with the same motor but you are getting a higher speed. What pitch prop are you running and what RPM's are running at? I agree, it will corner just as good as any runabout i've been in.
We took our new 2008 Bennington 2075RLi Tri-toon with Yamaha F150 and three pair of strakes out today for a test ride with the dealer and hit 44mph on smooth water. It did better by 6mph than the comparable 2008 Bennington 2075RLi Tri-toon with Yamaha F150 ESP that we tested previously. It did not corner near as well as the ESP but the difference in speed was amazing.
Our prop is a Yamaha Reliance Series Stainless Steel 14 1/2 15-M. We got the boat home and took it out yesterday (without the salesman) for the first time. The boat ran great but only hit 40mph on my hand held gps. Since I was only looking for 30mph cruise I am extremely happy. Here is how it broke down per the gps 3,000rpm - 15mph, 3,500rpm - 20mph, 4,000rpm - 25mph, 4,500rpm - 30mph, 5,000rpm - 35mph and 5,500mph 40mph. It seems the speedo was off some on our test ride and yesterday it didn't work so back to the dealer for a warranty. Great boat and we love it so far.
I have a stainless prop, but I don't know the pitch...sorry. My speed was given by the motor, I do not have my GPS mounted yet. Top speed was attained at 5800rpm. The speedo clogged after 3 days, and according to the mechanic, is now "cemented" full so will never work again (so I'm told.)
Makes no difference to me anyway, I only need to know what 10mph is so I don't get yelled at by shoreliners...;-]
FWIW, I went out yesterday on reasonably calm waters with 4 adults (3 of them 200+lbs) and a child. We pulled 2 people on a Big Mable "too fast"...;-] I was doing 180 degree turns that were ~twice the boat length, it was awesome.
Now only if my dealer and Bennington didn't suck so bad at customer service...
I bought a 2575GL Bennington tri-toon with a Yamaha 150 last summer and have 38 hours on it to date. With 3 or 4 people on board I can get over 40 mph, measured by my Garmin navigation unit. With a full load I can get into the mid 30's How fast fo you want to go? There's a dealer near me that puts in big-block V8's and recommends the new eliptical pontoons. They claimed they could get close to 70 mph. Bennington tri-toons are the highest riding pontoon boats available and I think the fastest, depending on the power you choose. We love our Bennington and so do our kids and grandkids! Let me know if you have any specific questions.