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Boater1
 
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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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