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Message: <blockquote data-quote="SLE" data-source="post: 257867" data-attributes="member: 3889">I'm going to divulge here a bit, setting up boats to run and run well works well with my Type A personality, lol. Your right Riggen, you can't run every prop at the same height, there's a lot of factors both on the boat and the prop that will make a different. However, note that not all Tempest's are created equal and neither all Bravos but the bravos are more consistent. Just do a little reading about the A45, A46, A47, and newer A48 Tempest's. There's a vast difference in how they perform and they're all stamped with the same name, heck if i remember correctly, the A45s were even a larger diameter than the others. You could easily be on either on end of the spectrum with those two props and be running a poor A46 Tempest and a "Good" per-say Bravo. Once you start running blueprinted prop's it shows up quite quickly. In theory, the Bravo's slightly larger diameter (about 1/4" in the pitches that we're talking about) would allow a higher engine height however, pending how much tip cup it actually has compared to the Tempest will determine how much bite it will actually hold when you start jacking the engine up. The other part that play's into it is how much stern lift the boat needs and most of our "Walleye" boats are fairly heavy in the back and need stern lift to control the bow in rough water. The Bravo's provide more stern lift through the use of a flared barrel. The barrel of the tempest is more strait and that prop is known to be geared much more towards bow lift. With the tempest running more nose high with the stern of the boat deeper in the water, you can often time raise and trim the engine pretty drastically especially if it has decent tip cup (again even from the factory they're not all the same, even in the same "A"series). The Tempest will be more efficient simply by nature if it being a three blade design and cupping, this is nothing more than basic physics. It's also why the Tempest will run less rpm at the same speed as an equally pitch Bravo. This isn't a guess, this is a fact. It is why they have to run 1 degree more of pitch on the Bravo than the tempest all things being equal. I've had two boat's where the Tempest would run higher than a Bravo, both of those boats ran extremely well. We'll just say it was a "good" tempest out of the box only made better with a little tweaking. still kinda pissed I let it go with the last boat.Now, before you jump all over me about your Bravo running so much better than your Tempest, I'll be the first to say the Tempest is not always the best prop for our Walleye boats. We, more times than not, need more stern lift and better bow control. Heck, I'm running a Bravo FS myself, abiet croxtonized as they say. I am however running the Bravo because it's the best compromise between speed, handling, and economy on my particular boat. I would bet money I could get a Tempest to run faster on top end and a Rev 4 to handle better everywhere else, and this is exactly what I did on my last boat. Unfortunately I'm getting lazy in my old age and I'm willing to settle for something that's pretty good everywhere buy maybe not the best at anything. Food for thought.I would be willing to bet if you dug into the details of this with Scott, you'd get some of the same information. It's where I've gotten some of my info along with with likes of John Janaky @ DAH propellers and Mark Croxton of Mark's High Performance Propeller. John will be the first to ask if you willing to have 3 or 4 props and switch them out based on your days need, lol. Obviously that isn't realistic for most, why you get sent in the direction of a prop that's a good compromise, aka the bravo! It's kind of mercurys standard ansewer these days after the reinvented it with the FS & XS nomenclature.With that said, I'm sure I've dove done the rabbit hole and off track far enough to make most want to pull the trigger, so onward and back to getting Volmer setup!</blockquote>

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