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Prop Cavitation/Ventilation (pic added)
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<blockquote data-quote="gator1gear" data-source="post: 317859" data-attributes="member: 4155"><p>I have a question for you guys. I have a short shaft motor on a 20" transom and buying a long shaft motor is not an option right now. I took the motor out for the first time and at about half throttle, the rpms came up, but the speed didn't. I added a homebuilt "compression plate" and it helped out a TON! That being said, something still didn't feel quite right in the upper rpms. I added a few pics to show the position of the cavitation plate. My next step is to lower the outboard with a fixed setback plate or mini jack plate. I am definitely encouraged by the fact that it ran better after adding the plate to keep water around the prop. At this point, I can't change the boat or the motor, so I'm looking for a compromise that will "work" with the options I have. Thanks guys and Gals! May not look like it in the pics, but the cavitation plate is really close to even with the bottom of the boat.</p></blockquote><p></p>
[QUOTE="gator1gear, post: 317859, member: 4155"] I have a question for you guys. I have a short shaft motor on a 20" transom and buying a long shaft motor is not an option right now. I took the motor out for the first time and at about half throttle, the rpms came up, but the speed didn't. I added a homebuilt "compression plate" and it helped out a TON! That being said, something still didn't feel quite right in the upper rpms. I added a few pics to show the position of the cavitation plate. My next step is to lower the outboard with a fixed setback plate or mini jack plate. I am definitely encouraged by the fact that it ran better after adding the plate to keep water around the prop. At this point, I can't change the boat or the motor, so I'm looking for a compromise that will "work" with the options I have. Thanks guys and Gals! May not look like it in the pics, but the cavitation plate is really close to even with the bottom of the boat. [/QUOTE]
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