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Old 03 April 2014, 21:09   #21
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Country: Canada
Town: Vancouver
Boat name: Midnight Marauder
Make: Loki
Length: 10m +
Engine: Evinrudes
Join Date: Oct 2007
Posts: 66
She only had about 15 gal of fuel in her in those pics.
733 has always been cored with balsa or foam.
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Old 04 April 2014, 21:12   #22
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Country: USA
Town: Orange County, CA
Boat name: Northwind
Make: Northwind
Length: 10m +
Engine: Twin Yamaha 350's
Join Date: Feb 2008
Posts: 154
Quote:
Originally Posted by mkb243 View Post
Had the 733 out for a nice run in the sunshine yesterday.
The 300 Yamaha is a great motor for this boat.
2 people and light fuel saw 47 knots flat out.
4000 RPM 31 knots and 10.7 GPH
4250 RPM 34 knots and 12 GPH
What do you think the pros & cons are between this single 300 installation and the usual layout with the twin 150's...?

I have a specwar 733 that I want to refurbish and I keep going back and forth between the two engine layouts...
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Old 05 April 2014, 14:07   #23
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Country: Canada
Town: Vancouver
Boat name: Midnight Marauder
Make: Loki
Length: 10m +
Engine: Evinrudes
Join Date: Oct 2007
Posts: 66
Twins.....
Look cooler
Sound great
Help with maneuverability in tight quarters
Counter rotating set make the boat feel more stable and eliminate the prop torque lean
Potentially better acceleration thanks to twice the propeller grip
Safety factor of having an extra engine when one dies

Single......
Less expensive to buy
Half the maintenance costs
Half the drag and lighter weight help efficiency and top speed

With a single setup on these very narrow boats it's advantageous to have trim tabs so you can counteract the lean generated from the prop torque
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Old 05 April 2014, 14:56   #24
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Country: USA
Town: CA
Make: Zodiac RIB-P
Length: 7m +
Engine: Suzuki 250
Join Date: Aug 2010
Posts: 1,122
Damn. Now I need trim tabs too. Actually the are on the list but towards the bottom and in the future sometime. I'm 300lbs so I just move to the side to trim the boat

Jason
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