Prop design???
 

I'm trying to learn a little about prop design. I've search through this forum, and read a couple of books. Today I was looking at some photos of props

The first one has straight trailing edges:

http://i11.ebayimg.com/05/i/08/cc/bb/a8_1.JPG

While these have much more curve to the trailing edge:

http://i9.ebayimg.com/06/i/08/c0/1a/fa_1.JPG

They're both 24 pich bravo 1 performance props. What assumptions would a prop expert make after looking at them??

thanks

Re: Prop design???
 

I would assume that the top picture is not a Bravo 1 propeller. At least not from the picture I am looking at.

Though hub exhaust stern drive intended cleaver top pic (Q4). More stern lift.

Though hub exhaust stern drive semi round ear bottom pic (B1). More bow lift.

Re: Prop design???
 

The pic of the top prop is off the interent, but is identical in appearance to an intimidator Q4 that someone gave me to fit my bravo 1 drive. The bottom props are shaped like what I have on it now.

If I'm currently running a three blade but with blades shaped like the second props, and I'm running pretty flat on smooth water without tabs, and need a decent amount of tabs on rough water, would I then expect to much bow down with a four blade cleaver like the first pic?

I'm also going up in power and taking about 80lbs off the stern.

thanks