doel-fin, whale tale, etc

[c11343]

have a 9.9 Evinrude and looking for hydrofoil fin for same. My 12' mirrorcraft needs help or I need to loose weight. Which hydrofoil works best on this small motor. Thanks much

 

[kart33]

Re: doel-fin, whale tale, etc

Use a one piece fin either manufacturer is good just one piece, as the holes drilled to mount the fin weaken the cavitation plate and can cause premature failure.

 

[whosmatt]

Re: doel-fin, whale tale, etc

i use the stingray jr on my johnson 9.9<br /><br />it works great, especially in helping to plane heavier loads. i also have a piranha prop with 2 sets of blades, one 9 pitch and one 7 pitch. the 7 works great when i have 2 people, the 9 gives me about 3 extra mph when i'm alone.

 

[FlyBoyMark]

Re: doel-fin, whale tale, etc

Have you checked the angle of the cavitation plate versus the bottom? How about tucking the motor in more? Gas and battery in front of boat? All the other gear moved forward too? How about a tiller extension so that you can run from middle seat? These choices are better than putting fins on the motor. That should be done only as a last resort...They actually slow the top end down on a boat that small. In addition they booger up your cavitation plate with holes that weaken it. Over the years I have welded many broken cavitaiton plates because of "fins". Remember; "LAST RESORT...."

 

[c11343]

Re: doel-fin, whale tale, etc

Hi Guys, thanks for the info. I am running a 9.5 x 10 factory prop, wonder if that is too big, will try after putting hydrofoil on.