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Author Topic:   Hydrofoil stabilizers
Rocks posted 03-05-2004 04:58 PM ET (US)   Profile for Rocks   Send Email to Rocks  
I'm new to this site, you've got some fantastic information here and having not long been in the BW scene(I have a 1990 25'Outrage Cuddy WD),I wondered if I could ask a question:Has anyone tried hydrofoils on BW of this size with 2x200 merc blackmax's or equivalent because although they seem to give a lot of sternlift, during quick acceration/deceleration the boat seems a bit unstable?
Clark Roberts posted 03-07-2004 08:37 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
Rocks, evidintly no one has tried fins on a 25'/duel 200hp set-up. I have "Doel-Fin" brand fins on all my Whalers (13,15,17,19,21'& 21') and highly recommend them for improving hole shot, reducing cavitation and lowering minimum planing speeds and don't see why you shouldn't get same results. Suggestion: gather some data (time to speed/trim-out max angle/top speed/mpg...etc) with present set-up and then install a pair of Doel-Fins and repeat the tests. A lot of us would be interested in seeing the results. Happy Whalin'.. Clark.. Spruce Creek Navy
prm1177 posted 03-07-2004 03:34 PM ET (US)     Profile for prm1177  Send Email to prm1177     
It's been my observation that hydrofoil stabilizers are designed for single engine systems. I would think that trim tabs are a better solution for dual engines as they can be trimmed independently, but this is supposition and not based on direct experience.
Rocks posted 03-08-2004 12:19 AM ET (US)     Profile for Rocks  Send Email to Rocks     
I would have thought it were the other way around, a two engine setup with stabilizers can be powertrimmed individually quite well whereas a single engine would benefit more from trim tabs as the paddle effect kicks in, maybe I'm just looking for something wrong when I should be glad to have got the benefits Clark mentions without the expense and maintenance of trim tabs, stil when you open the taps it can be tricky keeping a straight course while the meat of the acceleration bites, the same if you shut them off.

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