Lowlysubaruguy
Chief Petty Officer
- Joined
- Dec 3, 2012
- Messages
- 514
I have a new 2017 Wellcraft 262 Sportsman with twin Yamaha 150s both right hand rotation and throttle cable engines not drive by wire if that matters. Engines now have enough hours to tinker a little along with water conditions to WOT full speed operations. Boat hit 50 MPH which was pretty impressive given one of many heres concerns that it would be slightly underpowered. Im happy with its performance loaded and unloaded have had a crew of people and a full tank of fuel and gear on it. What I have noticed is the starboard engine seems to be off 300 to 500 RPM ( lower from the port engine at most speeds I have to trim that engine up quite a bit with more throttle to get the RPMS from both engines the same. I wasnt really concerned about this but a buddy suggested maybe thats not right. At WOT and 49 to 50 MPH starboard engine peaks at 4600 RPMS and the Port engine peaks at 4900 RPMS. Tinkering with trim makes little change performance is good I did notice at speeds between 30 and 50 MPH that there is faint vibration felt that can be smoothed out by slightly trimming the outboards differently. id post a photo or my engines control screen but I cannot get photos to post. I read I may need to post a number of times first? Ill look into that soon. Fuel mileage at WOT and 50 MPH is coming in at 1.4 to 1.6 MPG and speeds between 32 and 38 MPH I see 2.4 to 2.6 MPG if that is info that helps. May or may not be normal but I thought id post in case someone knows for a fact.