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Boat House
Removed Hydrofoil (Whale Tail Thing) and gained a few MPH
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<blockquote data-quote="kfa4303" data-source="post: 273888" data-attributes="member: 7274"><p>+1. Not surprising, really. The whale tail should be out of the water along with the anti-vent when the boat is on plane. As a result, it doesn't/shouldn't effect the boats performance, except perhaps at very low speeds. If it does, it's only because the tail is in the water, creating drag, where it shouldn't be. So basically, the only way they can influence your performance is if they're being used incorrectly, and when used properly, they're out of the water and therefore make no difference one way, or the other. By removing it, you reduced the drag crated by your lower end and picked up a few mph. You may even be able to pick up a few more by ensuring that the AV plate is in fact breaking the waters surface at planing speeds. You can either clamp the motor higher on the transom such that the AV plate is level, or slightly higher than the keel and/or devise a jackplate/transom riser to do so. I recently built and installed a jack plate on my 14' tinny running a '66 20 hp and it improved handling and the ability to get on plane as well as allowing me to run in shallower water than before.</p></blockquote><p></p>
[QUOTE="kfa4303, post: 273888, member: 7274"] +1. Not surprising, really. The whale tail should be out of the water along with the anti-vent when the boat is on plane. As a result, it doesn't/shouldn't effect the boats performance, except perhaps at very low speeds. If it does, it's only because the tail is in the water, creating drag, where it shouldn't be. So basically, the only way they can influence your performance is if they're being used incorrectly, and when used properly, they're out of the water and therefore make no difference one way, or the other. By removing it, you reduced the drag crated by your lower end and picked up a few mph. You may even be able to pick up a few more by ensuring that the AV plate is in fact breaking the waters surface at planing speeds. You can either clamp the motor higher on the transom such that the AV plate is level, or slightly higher than the keel and/or devise a jackplate/transom riser to do so. I recently built and installed a jack plate on my 14' tinny running a '66 20 hp and it improved handling and the ability to get on plane as well as allowing me to run in shallower water than before. [/QUOTE]
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Boat House
Removed Hydrofoil (Whale Tail Thing) and gained a few MPH
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