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Brent

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http://www.yamahaoutboards.com/yamaha-a ... -performer

8,700-Hour F150 Outboard Still a Top Performer
Yamaha Marine Group News Release, August 5, 2013

Kennesaw, Ga., August 5, 2013 – Performance testing conducted by Yamaha Marine Group showed that a Yamaha F150 outboard with thousands of hours of use can still keep up with a nearly new* F150 outboard – further underscoring the reliability of Yamaha’s most popular motor.

Yamaha tested one of the two 8,700-hour F150s acquired from the Charleston Water Taxi** against the newer F150. A single test boat was used, and the same performance tests conducted on the boat with each motor, using the same propeller and test load. Amazingly, both outboards recorded nearly the same performance.

Testing was performed on Lake Allatoona, just north of Yamaha Marine Group’s Kennesaw, Ga. headquarters. The chart below gives a side-by-side comparison of the performance data for the newer F150 outboard and the 8,700-hour F150.

Performance Data

Newer Yamaha F150 Outboard 8,700-Hour Yamaha F150 Outboard

Time to Plane, 4.53 seconds 4.60 seconds

Top Speed, 43.7 (6,000 RPM) 43.1 (6,000 RPM)

Fuel Economy, 4.56 (3,500 RPM) 4.32 MPG (3,500 RPM)

*Nearly new test motor had 240 hours of use.

“These tests just prove again that Yamaha builds outboards that last,” said David Meeler, Marine Product Information Manager, Yamaha Marine Group. “With basic maintenance, the F150 can hold up to near new performance standards even after extreme use, underscoring Yamaha’s trademark reliability.”

Yamaha Marine Group acquired the 8,700-hour outboards earlier this year from Charleston Water Taxi owners Scott Connelly and Chip Deaton. At that time, Connelly and Deaton had repowered for the second time in two years with a pair of Yamaha F150 outboards. In 2011, Yamaha Marine Group acquired the first pair of F150 outboard motors from the vessel, each of which had more than 6,800 hours of use**. The outboards were used to power the 40-foot, 16,000-pound Catamaran, which ferries passengers across the Charleston Harbor.

Yamaha Marine products are marketed throughout the United States and around the world. Yamaha Marine Group, based in Kennesaw, Ga., supports its 2,000 U.S. dealers and boat builder partners with marketing, training and parts for Yamaha’s full line of products and strives to be the industry leader in reliability, technology and customer service. Yamaha Marine is the only outboard brand to have earned NMMA®’s C.S.I. Customer Satisfaction Index award every year since its inception. Visit http://www.yamahaoutboards.com.

**Yamaha products and services provided for free in exchange for engines. Results are based on commercial use, and may vary for traditional retail consumer use. This document contains many of Yamaha's valuable trademarks. It may also contain trademarks belonging to other companies. Any references to other companies or their products are for identification purposes only, and are not intended to be an endorsement.
 
And this proves that a motor that is run....and not sitting around is much better for the motor. :)
 
“These tests just prove again that Yamaha builds outboards that last,” said David Meeler, Marine Product Information Manager, Yamaha Marine Group. “With basic maintenance, the F150 can hold up to near new performance standards even after extreme use, underscoring Yamaha’s trademark reliability.”
... provided your exhaust housing doesn't corrode, or your VST filter clog so much the motor dies, or that your dealer doesn't mount the OB too deep, or that same of different dealer, or even any owner of the OB doesn't put on too steep a prop, thereby lugging the motor and causing an infantile death ...

warthog5":1aqkk33x said:
And this proves that a motor that is run....and not sitting around is much better for the motor. :)
True, I agree with that 110%! But to me, the duty or use cycle is just as important when run. i would be those twin motors weren't really stressed as much as people run their single OB motors.

Case in point my brother's 26-year old Yam 150hp 2-strokes, twin OBs on a single GW hull. With the 2 at an easy cruise, he still runs faster than a 250hp would, and a lower RPM.

Per the ICOMMA duty cycle for OBs, it has been proven on 2 points that more hours on the motor @ higher RPMs with more abrupt changes in RPMs (fast planning, etc.) is what kills motor longevity.

Running a motor per se doesn't kill it ...
 
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