6 blade hydromotive
 

im finally gettin the boat near completion and are in need of props. i am lookin at the hydromotive 6 blade, but have heard that u need a stepped hull with high x dimensions for this prop. my boat is a 1990 revolution with stock bravos w/ nose cones, triple 640 hp/670 torque. i am looking for a high top speed. the drives are 1.5/1 ratio. also what would labbing the props do for it. lastly who can sell me some of these at a good price. thanks

Re: 6 blade hydromotive
 

I'm afraid we don't carry those propellers.

If at all possible, try them first. You're right with your application statements. These props can be the best props or not work at all on your application. Straight V hulls can have problems with the stern lift at WOT unless they are set up in race configuration with the C.G. just right.

Especially if your looking for top speed, there may be better choices.

Good luck

Re: 6 blade hydromotive
 

do u no wut props would work the best on this hull? do u have a phone number i could contact you by?

Re: 6 blade hydromotive
 

Leaving the shop right now, finally.

Call tomorrow.

920-295-4435

Re: 6 blade hydromotive
 

Awkward thread or what? :confused:

Re: 6 blade hydromotive
 

like a first date....

Re: 6 blade hydromotive
 

Thanks for being patient.

My thoughts are, you need a propeller that carries your bow more. I'm not suggesting the 6BL won't work. It just has some characteristics not conducive to deep V hulls. The stern lift at WOT could be unnerving.

A 4BL prop may give the boat a better attitude at WOT. When your boat was built, low X dimensions with 3BL props were the state of the art. Did you go with a high X?

I'm suggesting you try some Bravo 1 4BL or comparable propeller before investing in a propeller that may not give you the total performance you want.

Test test test

Re: 6 blade hydromotive
 

The rule of thumb is that if you can get on plane with a Mirage+ and it doesn't chine walk, that'll be your fastest prop. Your x-dim will need to be deep to plane off with a Mirage+. If the boat is a handfull or blows out when planing, then try the Bravo1. I have found the Hydromotives do help smooth out chinewalking conditions, but the prop really can't lift a bow. It's also a bear to get on plane. Now the 6 blades will definetly help carry that bow, and it should plane better, but all those blades will slow the boat down. The midrange should be awsome though. A great family cruiser prop. With your power, boat size and drive choice, I'd be concerned about a prop that hooks up too well. You could be looking at some broken drive parts.

Re: 6 blade hydromotive
 

the x dimension is jsut as it was from the factory. im looking at the highest top speed possible, and heard that more blades give u a faster top speed. if a 3 blade is the way to go then i need to find out wut pitch. the props on it now came with the boat but are four blades and wont work wiht the new engines. also, at what rpm's should the engines be running at wot?

Re: 6 blade hydromotive
 

try thottle up matt has alot of experience with hydromotives

Re: 6 blade hydromotive
 

Has anyone tried the 5 blade hydromotives on a twin step Top Gun? What do you think, I was going to try some?

Re: 6 blade hydromotive
 

(Stock Bravo's + 640 hp) times 6 blade props = blown drives. You'll be starting a new thread soon asking why your drives are making funny noises. Lot of power, heavy boat and alot of bite for that set up.

Re: 6 blade hydromotive
 

What was your old power, speed and prop combo? It's out of my league, but I could take a stab at it.

Re: 6 blade hydromotive
 

The 4BL props will be a good propeller for all around performance and would be my suggestion for top end (per your goal). 3BL props will have some characteristics you may not be happy with. The pitch and drive depth will need to be determined. Your engine builder should supply you with appropriate rpm range to run the engines.

If you can supply a accurate "wet" weight of the boat I can give the appropriate starting pitch to work with.

Re: 6 blade hydromotive
 

i called today and no one was there to pick up the phone. i called merc racing and they said to jsut run it with the current props and see wut rpms it hitting. the weight wet is around 14,000 pounds wiht full fuel. i bought the boat with drives and installed these engines myself. i think ill probably go with the three blade mirage/mirage plus labbed. the engines are going to run about 5200 rpms-5400 rpms wot.

Re: 6 blade hydromotive
 

If you called us today and we didn't answer the phone, we had propellers in our hands on the machines or other things going on. We pride ourselves in returning calls the same day a message was left. I didn't get a voice mail from you. Please call back at your convenience.


Hp/wt ratio shows the boat in the 90mph range. To achieve that speed with 1.5g.r. @ 5300rpm will take a 30-32 pitch propeller. I still like the Bravo 1 propeller on your boat. If your 3 blade props are in the low 20" range it may be tough to get a baseline from them.

Again, I apologize for not speaking with you today.

Re: 6 blade hydromotive
 

Don't just buy a set of props. You are going to need to try some. Then try a couple more. Once you found the perfect prop you can then lab it. I'm sure bb has some sort of a test and return policy.