Thread subject: Whaler Central - Boston Whaler Boat Information and Photos :: Performance - Outrage 17 with 115 4-stroke

Posted by Phil T on 05/12/08 - 12:13 PM
#1

I have finally gotten to the point of assessing the engine/propeller setup of my boat. While I have no specific complaints, I did not rig the engine. I am not interested in high speed performance, rather the engine is not lugging and overall performance is good.

I run 95% of the time alone with 1/2 tank, 150 lbs of gear in snotty conditions.

Specifics:

1991 Outrage 17 I
2003 Yamaha F115 4-stroke

WOT range is 5k - 6k
Gear Ratio 2.15
Prop - Yamaha 13x19K painted aluminum

Engine is mounted 1 hole up and the anti-cavitation plate is even with the keel. Photo is

Performance Observation:

2 people, 30 gallons fuel, 200 gear, While in protected water, trimmed out, bit windy. 2 runs in opposing directions taken. Maximum RPM was 5500 on both runs. Average speed was 39.5 mph

I plan to raise the engine 1 hole up. I presume this will get me 1-200 more RPM