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-   -   30 prop for top speed (https://www.offshoreonly.com/forums/activator/369703-30-prop-top-speed.html)

gr8evo 12-14-2020 11:42 AM

30 prop for top speed
 
Hi, working with a 30 Activator. Motor makes [email protected] , 958 @4700 rpm tq.

1.5 imco xcs upper and lower with a 34p bravo 4blade untouched. It runs 100mph @ 5300 and 108mph @ 5700rpm has been the best. The motor is just about out of steam in the upper 5k rpm range. But more import the boat feels to sketchy to stay in it past that. I have tried a labbed 32 bravo 4 blade and nearly puts it on the rev limiter when you punch it. Also have a 5 blade 32 hearing done by b-blades and it leans the boat over to the port side bad and chines walks really bad with the hearing.
Boat behaves well between 60-90 after that its a bit of a train wreck. Chines walks bad and wants to torque over to the left without dragging the port tab.

I see a few similar powered 30's that have claimed big numbers 115mph ish. Anyone have any props that may get some more mph out of this setup?

tomcei 12-21-2020 06:04 PM

interesting set up. good luck in your search.

kreed 02-19-2021 06:49 AM

I would give Mark a call @ Rage Powerboats. He is the guy that built these hulls and Im sure he could steer you in the right direction. Real nice guy and will take the time to help you get it figured out.

rageman28 03-02-2021 12:37 PM


Originally Posted by gr8evo (Post 4769199)
Hi, working with a 30 Activator. Motor makes [email protected] , 958 @4700 rpm tq.

1.5 imco xcs upper and lower with a 34p bravo 4blade untouched. It runs 100mph @ 5300 and 108mph @ 5700rpm has been the best. The motor is just about out of steam in the upper 5k rpm range. But more import the boat feels to sketchy to stay in it past that. I have tried a labbed 32 bravo 4 blade and nearly puts it on the rev limiter when you punch it. Also have a 5 blade 32 hearing done by b-blades and it leans the boat over to the port side bad and chines walks really bad with the hearing.
Boat behaves well between 60-90 after that its a bit of a train wreck. Chines walks bad and wants to torque over to the left without dragging the port tab.

I see a few similar powered 30's that have claimed big numbers 115mph ish. Anyone have any props that may get some more mph out of this setup?

We found the 34 Pitch Bravo 1 works the best. The hydromotive P5X works good at lifting the bow. Haven't had much success with the B-Blades. When the drive is all the way in, the boat will lean to the left. The goal is to get the drive level or a little positive trim. Which 30' is this? Are you on Long Island?

cdaniel525 04-11-2021 07:20 AM


Originally Posted by rageman28 (Post 4779797)
We found the 34 Pitch Bravo 1 works the best. The hydromotive P5X works good at lifting the bow. Haven't had much success with the B-Blades. When the drive is all the way in, the boat will lean to the left. The goal is to get the drive level or a little positive trim. Which 30' is this? Are you on Long Island?

Rageman... If currently running a 30p Bravo1, what pitch Hydromotive p5x would you recommend starting with for my 30

rageman28 04-14-2021 03:47 PM


Originally Posted by cdaniel525 (Post 4785349)
Rageman... If currently running a 30p Bravo1, what pitch Hydromotive p5x would you recommend starting with for my 30

32 should be a good starting point.


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