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re: Outboard Motor Experts...
Posted on 7/12/20 at 5:21 pm to DownshiftAndFloorIt
Posted on 7/12/20 at 5:21 pm to DownshiftAndFloorIt
quote:
I think it has more to do with overall power density. You can cram more HP under a smaller cowling with a high revving V engine, I dont think the overall trend is much more complicated than that.
Some other possibles,: Once the power started getting far beyond 115 the blocks get taller and more difficult to cool upper cylidners. They also need to be heavier built as they get taller since gyroscopic forces increase the higher up you put the flywheel. Probably some torsional vibration problems as well since outboards dont have viscous dampers and inlines tend to be more torsionally abusive than V engines.
Interesting take considering today's Yamaha F115'are inline 4 cylinders.
1
Posted on 7/12/20 at 5:57 pm to GoAwayImBaitn
So are the 200's I think, so it's certainly not a hard fast rule that they quit being inlines at 115. Those are nutless 200's though.
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