bow lift
 

When they refer to good bow lift, what do they exactly mean?

Do four blades or three blades produce better bow lift?

Do you want alot of bow lift?

It's pretty straight forward. It simply refers to the props abillity to, due to more leverage and "bite", carry the bow high and air out the boat. The non-stepped Bajas do not have natural lift, and therefore they need a prop with bow lift to carry the boat. It does not really have anything to do with number of blades, albeit a 4 blade prop grabs the water more than a 3 blade, and can of course carry more, but it's a prop geometry thing. Props like the Mirage+ and the Revoluton 4 have a geometry that creates bow lift, where props like the Bravo 1 is much more neutral, and carries the boat more flat. This is desireble in a boat with natural lift that wants to run flat. For example the stepped Fountains.

To answer your last question. Yes, on Bajas you want lots of bow lift. In my experience, when running the neutral props like the B1, Hydro Q4-X and P5-X ect. the boat gets too much vetted surface, feels heavy, needs a lot of trim to air out and runs slow. This will waste power. Especially with stern lifting props like Hydromotive Q4's and P5's ect., things can get squirlly at high speed with a very loose rear, these can also create problems with bow steer, none of which you want.

All this being said, labbing can help most of these problems. Bravo 1 props can be labbed to get bow lift, so there are several ways to get the desired result. And when running big power that needs high pitch, you will have to make what is available work. But when running lower pitches, I find it kinda silly to first buy a B1, then spend money to have it labbed for lift, when a Revolution can do it out of the box. Some might argue that a labbed B1 is faster than a stock Rev4, which is often true, but a Rev4 can also be labbed for speed, and will in many cases be faster than the labbed B1.

Hope all this answers some of your questions.

My 272 with over 1000 hp won't break low 90's unless the bow is aired out,Bajas need LOTS of bow lift a trim to go fast usually, and 4 blades will normally give you more bow lift, Smitty

thank you
 

yes it did answer all my questions, thats what i thought bow lift ment, just wanted to double check

thank you again

thank you
 

i guess i am glade i have a 4 blade custome spinellie prop. when i trimmed my old boat up alot i would see almost 10mph more on the boat and it would ride alot smoother. I have not yet brought the outdrive trim up much on the one i have now and i do about 73mph and that is with using the trim tabs too half way

thanks for the info, have alot more to learn about this new boat