Originally Posted by Dirk Diggler
Why would "overpowering" cause it to chine walk?
I'd have thought that would be obvious to you. Are you suggesting that power is not a significant contributing factor in chine walking?
Which bit of my logic is flawed?
Increased power = faster. Faster = more lift. More lift = less surface area in the water. Less surface area = more likely to imbalance. Imbalance + high speed = chine walk.
The advice always given here to people who experience a chine walk is to back off the throttle. There is other advice about trim, engine height etc to try to prevent it - but the universal message is that to stop it rather than make it less likely: slow down.
Its probably exaggerated on boats which are overpowered because they tend to be badly set up too with heavy engines etc.
Now I'm* not saying 350HP on an 8m boat is overpowered, I was answering the question "What happens if you over power a RIB, doesn't it just go faster".
*although ISO6185 suggests it might be!