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-   -   4-SPEED Propeller Push In Progress (https://www.offshoreonly.com/forums/general-boating-discussion/351093-4-speed-propeller-push-progress.html)

thirdchildhood 12-01-2017 04:50 PM


Originally Posted by TeamSaris (Post 4596839)
You'll lose the porpoise depending on the year of your boat (bottom thickness and drive height)
At least a 009 with a 565 did

I verified this with the owner of the Donzi and am awaiting further impressions. Johnny Saris' notes seem to be spot on. There may be a flood of used Bravo Ones available this spring!

bwd 12-01-2017 05:49 PM

I tried a set of 28s one afternoon when johnny saris came to town to goof off. I was very impressed .

Ryan00TJ 12-01-2017 09:04 PM


Originally Posted by Padraig (Post 4596871)
Thanks, It sounds as if it carries the bow a little more then the Bravo 1 and has less slip. My VR 1 seems to like bow lift more then my old 280 , so I am thinking this may be good. I am running a stock 28 Bravo 1 now, about 78 MPH @ just under 5200 rpm. Would like a couple of hundred more rpm. Motor dynoed at 564 hp so it should be equivalent to a Mercruiser 525. Trying to decide to lab my 28 or go with the 4 speed.

Padraig

Padraig, Try the new 4 speed compared to your stock Bravo 28p thru Blades prop test program. Have the best of the two labbed. I'm tempted to try one this summer and compare it to my labbed Bravo 28/30p.

TeamSaris 12-02-2017 09:21 AM


Originally Posted by Ryan00TJ (Post 4597005)
Padraig, Try the new 4 speed compared to your stock Bravo 28p thru Blades prop test program. Have the best of the two labbed. I'm tempted to try one this summer and compare it to my labbed Bravo 28/30p.

I don't think the VR1 and My Kryptonite are all that different setup wise (I know, different pad, I have a step, etc) but all in all they're light, purpose built, High X, fast vee bottoms. They certainly handle similar. I'm running a stock 30 4-Speed with an Imco lower. 5800 (1.5 gears) gets me 100mph on the dot. 785hp. I have a 32 B1 Brett made me I think all in all might be 1 or so MPH faster at WOT....BUT...with the drive height as aggressive as I have it, the boat didn't really work until 70 or so. It wandered around, sneezed a lot, and was slow in the midrange. The 4-Speed has none of that. The bow is up all the time with neutral trim, it accelerates like a bat out of hell, cruises 45-50mph at 3000 and leaps on plane with no issues.

TeamSaris 12-02-2017 09:22 AM


Originally Posted by thirdchildhood (Post 4596948)
I verified this with the owner of the Donzi and am awaiting further impressions. Johnny Saris' notes seem to be spot on. There may be a flood of used Bravo Ones available this spring!

We're Whippling a new 8.2 package in a 22 this winter, come spring you can bet on the first wheel we try!

ar300johnson 12-02-2017 11:23 PM

I have a1997 29 Fountain single step with a 540 BBC that makes 700 HP @ 5800 675 TRQ.@ 4800. It has a Scx upper with a -2 1.5 SC lower with a Drive Guardian. My initial thoughts were to try a 27 P5X as a baseline. I wonder if this new 4-speed prop would work as well as a 5 blade prop. I want a prop that has a good midrange, gets out of the hole with a full tank of fuel, and has good stability at top speed.

Apexwarrior 12-03-2017 05:28 AM

I tried these props on my 353 Fastech. In fact, the exact props that are on the Saris Racing boat (thanks Jason). My boat is a bit bigger and heavier with more power, but I think also with a deeper X. I could not get on plane at all. I'm guessing it was because of the twin step design of my hull. Too much aeration. Johnny can certainly comment from here, but be aware. I'm sure they're great props for straight bottom or even single step hull as you can see from the above, but for me, they were a no go. FYI...

TeamSaris 12-03-2017 08:03 AM


Originally Posted by Apexwarrior (Post 4597221)
I tried these props on my 353 Fastech. In fact, the exact props that are on the Saris Racing boat (thanks Jason). My boat is a bit bigger and heavier with more power, but I think also with a deeper X. I could not get on plane at all. I'm guessing it was because of the twin step design of my hull. Too much aeration. Johnny can certainly comment from here, but be aware. I'm sure they're great props for straight bottom or even single step hull as you can see from the above, but for me, they were a no go. FYI...

Funny story about that.


The vent plugs were out. Couldn't get my boat on plane a few days later either. Put them back in, bingo. They're worth another shot.

TeamSaris 12-03-2017 08:03 AM


Originally Posted by ar300johnson (Post 4597213)
I have a1997 29 Fountain single step with a 540 BBC that makes 700 HP @ 5800 675 TRQ.@ 4800. It has a Scx upper with a -2 1.5 SC lower with a Drive Guardian. My initial thoughts were to try a 27 P5X as a baseline. I wonder if this new 4-speed prop would work as well as a 5 blade prop. I want a prop that has a good midrange, gets out of the hole with a full tank of fuel, and has good stability at top speed.

The single engine fountains usually prefer a left handed prop too, keep that in mind. Sounds like a nice rig!

NWPC 12-03-2017 07:02 PM

I looked at this prop last spring but decided on a B1 labbed 26p.
Any idea on how it would do on my Adrenaline V24 ?


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