Counter roating inward , or outward?????

[piripi]

i have a 25 center console with twin 225 it runs mid 60's , what would make it run faster the counter rotating inward or outward , or will this just change the ride????

[mjwalters]

Not sure about v bottom but on a cat there can b a big difference You are probably going to have to change it to see

[Toffen]

Hi!

Rotating in will create less transomlift / more bowlift. The boat will run higher. But boat will not be so stable, as turning in will create a kind of roll in effect. Normally turning in will give better speed. I did have a twin 2.5 EFI setup on a narrow 25 feet hull. It went faster, but was not stable enough in high seas. So I swopped back to turning out.

Cheeers, Toffen

[99fxst99]

If your boat needs a lot of positive trim to get speed, it will probably benefit from turning in, but it may deteriorate the handling at speed. Turning in magnifies tendencies to chine walk.