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Post by Juan on Apr 30, 2020 8:35:04 GMT -6
I could use some suggestions. My little skiff will porpoise when trimmed up more than just a little bit even with the hydrofoil on the motor and as much weight moved forward as possible.. It will run close to 40 wide open as is but I should be able to trim it higher to get the best performance and run in shallower water and I can't without it porpoising so I'd like to install smart tabs or something else to stop the porpoising but the boat has a narrow beam and I don't think there is enough room on the transom for smart tabs. I don't need the speedometer pick up on the port side so I can remove that but I need to keep the transducer on the starboard side. Are there any other options? Do they make or could I fabricate a set of small stationary tabs and would that even work?  |
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Post by freezerfiller on Apr 30, 2020 15:50:47 GMT -6
You could certainly fab up some permanent tabs, but I think that is the wrong way to go. Are you at or under the max recommended hp? I know you know where it should ride, but that doel fin looks pretty low (it might be the angle of the photo).
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Post by Juan on Apr 30, 2020 17:02:57 GMT -6
You could certainly fab up some permanent tabs, but I think that is the wrong way to go. Are you at or under the max recommended hp? I know you know where it should ride, but that doel fin looks pretty low (it might be the angle of the photo). I think you're right. It's at the max recommended hp and I haven't been able to view the doel fin while running on plane but I thought it was level with the hull's flow line... but I took a long level out there earlier today and found that the cavitation plate was lower than the transom by a couple of inches. The motor was bottomed out and I thought if I raised it, it would only make the problem worse. I moved it up one hole and I'll try that to see if it makes a difference... if not, I guess I need a 4 blade prop or some home made trim tabs that don't trim.  |
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Post by freezerfiller on Apr 30, 2020 18:28:25 GMT -6
a 4 blade would probably help, but I'd start looking at your motor height first. You may not be able to do more than 40 without porpoising, but you might get 2 more mpg going 40...
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Post by Juan on May 1, 2020 3:59:48 GMT -6
I'm not trying to gain any more speed. I want to be able to trim the motor so I can run shallower without causing porpoising. Ideally, I should be able to trim the motor up until it throws a rooster tail or starts sucking air before it starts to porpoise and it won't get anywhere near that as it is now. If I can get the lower unit up higher and keep the boat on plane, I think this hull will run in 6" of water.
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Post by Juan on May 1, 2020 14:24:48 GMT -6
Raising the motor one hole did the trick. Took it to the river and tried it out and now it's perfect. Fished for an hour since I was there anyway and caught 8 hybrids. |
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Post by freezerfiller on May 1, 2020 16:18:11 GMT -6
Nice. I'm going to hit West Point tomorrow. Don't forget to save one of those hybrids and try it on the halfshell. You'll be surprised.
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Post by Juan on May 1, 2020 17:02:15 GMT -6
Haven't tried one yet but I'm going to. I've released em all. Hopefully West Point isn't as muddy as the river is down here. Good luck. I caught 39 day before yesterday and some were over 6 lbs.
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