hydrofoils breaking aluminium wings?

[Doug_G]

Originally Posted by jvb

hi ribbers,
i have good experience with simple hydrofoils on my SR5.4 / DT65.
now i am thinking to add them to my 90Merc too, but i heard they might cause the aluminium wings to break off.
do you have any experienced concerns against them?

its the cheap ones…:


thanks again for forums help!

jan

I used doel fins on twin 90hp Mercury outboards on a 22'0" Mako centre console with no damage to the engine.

Also used a set on a 75hp Yamaha powering a Shetland 18 for years with no damage to the engine.
It added about 10-12% to the top speed.

Just follow the instructions.

[jvb]

sooo...
finally got them in from nzl. costums were a pain... tax and fees and vat on top made them like 280€ in total.
they came without prepared holes.
installation took about 30 min. they sit solid and tight.
did a short testdrive so far only - i can see an improvement for faster planing, yet i would say it is marginal.
i would suppose anything above 50hp doesnt need it really.
having said this, i was alone and boat and tank empty.
shall keep you posted how it goes with passengers and fully loaded.
happy ribbing
jan