Originally Posted by Simon B
Does anyone know how going astern with trim tabs works?
Does stern dig in?
I have the SmartTabs on my rib, whilst I have never used the fins, I cannot fault the tabs.
After over a year of use, I did wonder if they were of benefit, so recently disconnected them and had a trip out. The difference that made was very noticable and all, including the crew, agreed to put them back on asap. Not that the boat was any where near being bad, just that with the tabs the ride was so much better, quicker to the plane, a plane speed of 10kts, softer landing if we got some air.
As for going astern, its not something most ribs do very often and when we do, there is no digging in at all, as the speed is low and then angle they are set at is not steep.
The reason for fitting is that out of Poole we had a long run at a max speed of 10kts, before the tabs, this meant about 15mins of the engine pushing hard at sub planning speeds and a nose up attitude. With the tabs, I can get on on the plane quickly and by playing the throttle just keep it up and not break the speed limit.