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Originally Posted by 38Raptor
(Post 4481433)
...it's more like an even worse "hop" than a porpoise...very similar to your Avatar...not a good feeling at those speeds!!!
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Someone I know had a nice idea to lengthen the front inner lifting strakes . On the Fountains they extend much further down the boat.
You can see the water leaves the front strakes and the bow falls only to be lifted again. This also may be the hop 39Raptor was referring to.. feels more like a hop then porpoise to me anyway. https://www.youtube.com/watch?v=DkFZo9x-vWg&feature=youtu.be (Now that all my engine stuff is all taken care of I`m moving on to handling) |
How fast were you going there? 65mph?
Be nice if we could solve this one, once and for all. I hate the "hop" |
MPH was Mid 80`s I think.
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I ran a Kevlar gun this weekend with bravos and 600sc's. Hop or porpoise was worse than any other gun I've been on. Drives are real high, this was an early lip ship boat. Going to put a 1" spacer in and lab the props see how it is. Could extend the strakes a little further and engineer some rocker into them to hold the bow down a little
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Originally Posted by ICDEDPPL
(Post 4481751)
MPH was Mid 80`s I think.
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Is this just a result of taking what was designed to be a 75mph boat back in the day and trying to run them over 90mph? Did the 90mph guns have a modified or tweaked bottom in order to offset this negative ride attribute? Would be nice if one of the "90" owners chimed in on this. (They were staggered, that would affect the balance).
"Locked and Loaded"??? |
They're not built to run on rivers and small lakes. Get those boats in any chop and porpoise will be gone
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Originally Posted by frickstyle
(Post 4481941)
Is this just a result of taking what was designed to be a 75mph boat back in the day and trying to run them over 90mph? Did the 90mph guns have a modified or tweaked bottom in order to offset this negative ride attribute? Would be nice if one of the "90" owners chimed in on this. (They were staggered, that would affect the balance).
"Locked and Loaded"??? |
Every Cigarette Ive owned porpoised at cruising speed, especially in flat water..Old School was definitely a different animal with the 6's.
Now I have a 35 Fountain(flat bottom), and it does the same thing. I usually bump the tabs down til it stops and then gradually bring them up. OR if I speed up, the porpoise will stop that way too. With a 1-2 ft chop,they all ride much better...... Ive also notice, that the Fountain gives a "flater" ride than the Cigarette when going high speeds.Flat bottom Cigarettes always seemed to ride "bow up". I am a river rat, so the flat fresh water really isnt what these boats were built for. |
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