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| has anyone experienced this:
Installed a stingray last year and it seemed to perform as advertised. (a slight loss of top-end) The other week took the boat (14 ft fibrglass, 50 hp E-Tec) for a test run and when I punched the throttle the boat wanted to corkscrew over clockwise. I just got the throttle off before I think it would have flipped. Scared the c@#p out of me!! I removed the Stingray immediately and will settle for a couple of seconds of planing time. |
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Posts: 791
Location: North Central IL USA | That's weird. So it was working fine last year and now it does this on you? Had it come loose or something? |
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| It wasn't loose. But when alone in the boat, seated on the right (275 lbs), naturally there is a slight list to the right. It seems that the angle of the Wing exagerated the lifting of the stern / lowering of the bow in the direction of the list, causing the 'rolling over' effect. It was the first time it ever happened. I had been alone in the boat before and didn't get this action. When 2 in the boat and nicely balanced, the immediate planing control was very much appreciated. But now, ... ? |
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Posts: 81
Location: Toronto, Ontario | Add these....I've heard they help tremendously....
http://www.marine-dynamics.com/te2.html |
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Posts: 32886
Location: Rhinelander, Wisconsin | my guess is you managed somehow to get the stingray submerged while running, and it held for long enough to cause the trouble. |
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| Thanks Mackerel, I may give it a try. (cautiously, I might add...) |
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Posts: 3480
Location: Elk River, Minnesota | Hiya,
Been thinking about this one for a while and the only thing I can think of is that the boat was listing enough to the right to the point that the stabilizing wing on the port side of the motor was out of the water while the right side was submerged. Since the foil act like a wing on a plane (same basic design as a wing on a plane....made in such a way that there is less pressure on the underside of the wing as compared to the top of the wing which creates the stern lift) my only thought is that with a fairly equalized pressure on the right side of the wing, the wing might have been acting as a curved rudder pushing lower into the water as you punched the throttle with a trimmed in motor.
Definitely is not a fun situation to feel, but here is a question for you...being it is a 14 foot boat and you weighing 275 pounds, that is quite a bit of weight on one side of the boat. Any chance you can move some other gear weight to the left to help balance out the load like your boat battery, gas can (if it needs a separate can)?
Just out of my own curiosity, what brand and how old is the boat? I think there might be some other things that can be tried, which may include taking the wing off, but depending on what you have, it may be needed and worthwhile to keep on. My gut instinct says for a 14 foot boat and 50hp, the foil is probably not something that is needed, unless the boat weight alone is over 700 pounds or so...then it might be something to consider.
In most cases, I feel the added wing is more of a band-aid for covering up some sort of set-up issue with the boat and motor combination. In almost all of the cases I know of, a foil is the most beneficial to those boats which are significantly underpowered for what the boat is rated for....like so many of the "deal" boats you see in many marine dealership ads.
Steve |
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Hydrofoil hazard?