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"Rich" wrote
Took the boat out today to test and see if the hydrofoil makes any difference. It is a new Tiger Shark VG Hydrofoil. Water conditions were flat calm, very little wind. Boat was loaded with full fuel and two adults, 475# total. Without the hydrofoil full throttle at 4400 rpms made 51 mph. With the hydrofoil full throttle at 4400 rpms was 50 mph. Cruising at 3200 rpms made 39 mph with or without the hydrofoil installed, no difference at all. With hydrofoil it did pop up on plane noticeably quicker and would stay on plane at 2000 rpms. Without at 2000 rpms it would still plow with the bow way high. All considered I will keep it. It probably won't give me any better fuel economy unless it would improve if I cruised at lower rpms. But for $22.00 it is worth it just to be able to plane at slower speeds. Wait a minute...Regarding that last paragraph...won't being able to plane at lower speeds give you better fuel economy when you are driving in this range? If you always drive at full spedd then there may be little difference, but being able to plane at lower speeds gives you better fuel economy at this speed. |
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