Jerry_NJ
Petty Officer 1st Class
- Joined
- Aug 23, 2010
- Messages
- 250
My recently purchased 14' Discovery Aluminum boat with a 9.9 hp 2-cycle Yamaha is slower than my 14' Aluminum Grumman with a 9.9 hp Evinrude. The Discovery while the same length is wider by 6" and deeper (20" stern) so it weighs more. The speed difference is not known as I have only a "eye ball" guess at speed, but I also note the Discovery at full throttle has a lot of cavitation churn behind the boat while the Grumman has more of a "rooster tail", of course there is no rooster tail but the Grumman develops the appearance of one forming.
I spoke with a fellow fisherman a couple of days ago at a local lake who has hydrofoils on his 9.9 hp 4 cycle Yamaha on a larger 17' Bass boat. He said it improves the performance including speed on his boat.
These are not expensive, under $100 for self installed. Are these devices really of value in the operation of low horse power outboard engines?
I am concerned too about having to drill 4 holes in the anti cavitation plate on the existing engine to install the hydrofoils... I have seen some that don't require holes as they are somehow clamped on.
Ideas and experience sought, thanks.
I spoke with a fellow fisherman a couple of days ago at a local lake who has hydrofoils on his 9.9 hp 4 cycle Yamaha on a larger 17' Bass boat. He said it improves the performance including speed on his boat.
These are not expensive, under $100 for self installed. Are these devices really of value in the operation of low horse power outboard engines?
I am concerned too about having to drill 4 holes in the anti cavitation plate on the existing engine to install the hydrofoils... I have seen some that don't require holes as they are somehow clamped on.
Ideas and experience sought, thanks.