New Yamaha 4 Stroke

[Terry England]

Breaker, Breaker Good Buddy, All you 2-Stroke boys turn down your 8 tracks for a minute and listen up. You are livin' in the last century George Jetson; get with the program. You can't take some 'ol school Evinrude Star-Flight, remove the cowling with 4 after burners on it, replace the garbage disposal carbs with selonid powered speaker like fuel injectors, bolt an upgraded game boy on the side of it and call it 'cutt'in edge technology....! It's still a dumb 'ol motor with fuel injection, an EEM and a new plastic cowling. Soon you'll be graduat'in from your sounding lead to a 4" Gemtronics paper machine and an Sitex "C" Loran. (Good luck bringing up that 14 and 44 line)

[Copper Collar]

Originally Posted by Bushwacker

BRP has been selling small 2 cyl. motors to the USN for several years http://www.evinrude.com/en-US/engine...ENGINES/MFE_55

They don't want gasoline on their assault ships, but want to run their outboards on the same JP-5 they use in the Harriers and helicopters!

For those engines in the link, it is about FAR more than just the fuel they burn.

[kmoose]

Originally Posted by Bushwacker

Their use of an oil bath chain cam drive and the offset crank/extra gear reduction to compensate for less torque sure makes a lot of sense!

Yep, Seems like even the older model Zukes have enough torque to get the job done...

[Fr. Frank]

Nothing beats an old "Tower of Power"....

1973 Mercury inline 6 "XS1500" 1.6L (99ci) when spun up to 9200 RPM could produce 205 crankshaft hp, more than 2 hp per cubic inch! and at only 257 lbs, produced .8 hp per lb.

It'll scare the crap out of you the 1st time you hear them turn rpm's that high, though. Sounds like movie audio of something going hyper-critical just before it blows up the whole planet.

[fly4navy]

Man, I love the smell of napalm on a Monday morning. Keep up the 4 strk 2 strk battle...I love it!

[Terry England]

There ain't noth'in to over-com'in the weight of a 4 stroke on that MA that 15 or 20 bags of Sackrete in the anchor locker wouldn't overcome. She'll just look a little like a Low-Rider with 10" of freeboard or maybe you'll just look like Dorf in a Flats Boat. Just git ya' some dingle balls to hang around 'ur Tee Top. And don't go in the flats 'cause you'll be drawing three and half feet of water with that rig. Bearcat Lovers!