Thread subject: Whaler Central - Boston Whaler Boat Information and Photos :: 18/19 Outrage and Mercury 150 HP Fourstroke

Posted by prj on 05/11/17 - 11:12 AM
#31

Following up, I was able to get the Outrage on Milwaukee Harbor last week for a quick test run and checkup prior to the Wisconsin gamefish opener this past weekend.

Unfortunately, conditions were a bit too lumpy and the harbor had debris from recent heavy rains washing out the river system, so I was unable to run much higher than 4500 RPM and low 40s in MPH.

To recap, my goal was to determine if:
A. The new "factory setting" on the trim limiter allowed higher trim angle at high RPM than my previous trim limiter, which was apparently not at the "factory setting".
and
B. There was a fixed RPM that initiated the trim limiter, or even lowered the engine automatically were the specified RPM exceeded while trimmed out further than the limiter.

Despite my inability to get the boat up to WOT due to conditions, my impression is that the new trim limiter height is HIGHER than the previous setting. At 4500 RPM or so, the boat was kicking one hell of a rooster tail off the stern. Max RPM with my prop is about 5600-5700 RPM. My sense is the limit is higher than previous.

As to the second goal, I'm not certain I have any clarity there. I tried trimming up high at just below 3000 RPM and the stern dug deep with prop blowout and no auto trim change. I tried the same above 3000 RPM and again, stern dug deep, bow flew high and the prop blew out with no auto trim change. It was an odd exercise with very uncomfortable boat performance, I'll confess. Can't imagine the thoughts of a boating-aware observer.

So, I will follow up again with a report after a run in ideal high-speed conditions to advise on trim limiter impact, but I'm not certain I'll be able to discern whether or not there is an auto trim return at a fixed RPM.

Patrick in Milwaukee