 Re: Explain stern lift
yup. what you said.
how to gain? doel fin, tabs will do it. on your app, i think tabs would be better.
certain type of prop? not really, but i bet some of the voodoo prop experts will answer up something.
what is the advantage? speed, fuel economy. you are getting more boat out of the water.
do you dig bow down? not with just stern lift. (add too much tab and you will lower the bow, though) think of it like a water ski. the skier sits in the water when not being pulled. the rear (stern) of his ski is way deep in the water, and the front of his ski (bow) is up in the air. as he is pulled, the rear (stern) is lifted until it 'skips' across the top of the water. less of the stern of the ski in the water means faster, more efficient skiing. if he 'sinks' the back(stern) of his ski in (by digging his heel in?), he will slow down and be less efficient.
conversely, if he lifts his ski too much in the stern, he will 'plow', (and probably in this case, be swallowing water!).
can you still trim bow up? yup. use your motor trim and your tabs to find the best running attitude.
you can add more motor trim, and more tab to lower the bow in adverse or bow-light conditions.
when you ride a boat without any tab, it might feel fine, and efficient. but let the driver add some tab, to get that stern lift, and most times you can 'feel' the boat being lifted and the ride is night and day over an un-lifted stern.
is it worth the expense? heck yes. trim tab systems are not overly expensive, and the sheer pleasure of the new ride is of great value, and i think you would be greatly and pleasantly surprized in your boats 'new' performance.
i think a PM to the tabman on this forum would answer your questions without my silly analogies.
cheers.
drew
| 
