trim tabs

[glen76]

if trim tabs are fitted to a boat its usually to counter act a nosey boat or one that leans, but can they have the opposite effect and actually lift a boats nose more than its maximum trim out without tabs?

ta

 

[Jon Fuller]

No




..unless mebbe you put a bag of cement on each tab and leave em up

 

[glen76]

ta, i thought as much

 

[Hydrostream]

Arneson Rocker Plates

I don't know if these ever worked, maybe in flat calm, but don't see how they could in any rough stuff!

http://arneson-industries.com/Arneson Rocker Plates.htm

Jon, do you know of any success with these?

 

[Jon Fuller]

I don't know anyone who has them no, but ski race boats have used that idea for years, and it isn't really any different to a regular tab in principle, it just has the added advantage that instead of a nasty hinged corner at the transition from hull running surface to tab control surface, which can't be good for flow, it sweeps into the control surface, almost like changing the actual shape of the aft running surface. much more efficient I would have thought, ie, more lift from the tab with less drag.