4-SPEED Propeller Push In Progress
12-01-2017, 04:50 PM
#21
Registered
iTrader: (6)
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!
12-01-2017, 09:04 PM
#23
Registered
iTrader: (8)
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
12-02-2017, 09:21 AM
#24
Driver-441
Racer
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.
12-02-2017, 11:23 PM
#26
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.
12-03-2017, 05:28 AM
#27
Registered
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...
12-03-2017, 08:03 AM
#28
Driver-441
Racer
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...
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.
12-03-2017, 08:03 AM
#29
Driver-441
Racer
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.
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