5 Blade Props on a 27 or 29
 

Has anybody tested or run a 5 blade LH rotation prop on their 27 or 29? I'm curious as to how much different a 5 blade would feel vs. a 4 blade Hydro which is what I have now.

Unless you are running a shorter drive than standard, what the results have been are, you gain getting on plane, the mid-range cruise picks up 3-5 mph, and normally you lose top end speed by 2-4 mph. Depends what you are trying to do. If you spend 90% of your time cruising, then you may save some fuel. If you are looking for every last mph out of it, the Hydro's are hard to beat. But Brett at BBlades has been know to work some magic on the 5 blade Maximus props that may be the best of both worlds. :p:p

Thanks for that info.

The boat also seems to ride a lot softer (Maximus). Even passengers that did not realize that the prop had been changed, commented how the boat rode better.

My experience was the following:

Plaining was awesome. Cruz was unbelievable - 3000 rpm put me at just over 56mph.

You're asking about LH rotation. I only tried a RH rotation 5 blade Maximus.

Boat was front heavy with high stern lift. Disparately needed to be labbed as most boats will not work well with stock Maximus. It usually requires work to perform nicely. It put too much of my bow in the water all the time.

It was too heavy for me to turn at that time with that engine so I maxed out at about 4500.

I did not want to spend the money at the time for the Maximus but I can tell you that there will be one in my future if Brett can get the top end where I want it... Even with top end slow, it is a great prop for a load of people, cooler, slow cruising etc.

I never spent the time and money to get it right. It was however, a very impressive difference when compared to the Bravo I four blade. The fact remains that most Bravo Props will work ok out of the box regarding ride, trim response etc.

The Maximus felt like work in progress with good results down the road if that makes any sense.

They were probably hanging on the stripper pole when they said that.:drink::drink:

I know this is probably apples to oranges due to I have the F1 version of the 29, but the only time I will run a 4 blade anymore is if it is perfect ideal conditions(lakes and rivers) as I am going for top end, but in normal race conditions I run a 27RH Throttle Up which gives me incredible acceleration with the only issue I have had to counter act is the torque throwing the boat to the port side. Lead bags on the starboard side solved that issue though. I used a 28LH Hydro 5 blade in 1 race(lake) and got the best of both worlds with only a couple of seconds drop off in acceleration but gained 2 mph in top end. Unfortunately in my application 28 is as big a 5 blade that I can go and still get up on plane w/o fighting her too much.

What power did you have and what size was the prop?

I ran a 5 on my 27 for a Poker Run. Cruise was great, planing was great, top end was garbage.

Plus - I couldnt get over the fact that the 5 blade felt like the extra torque was harder on the drive......could be a crazy thought though.

No you are not crazy. The Maximus is harder loading than a standard Bravo four blade. An experienced boater can feel it particularly in a boat as small as mine.

I believe I had my Raylar 600 at that time with the bravo 1 x drive. Can't remember the pitch but it was a big prop from BBlades that I rented while we were working.

You could tell it was a load on the drive for sure but it's also a very cool prop. Again, I plan to buy one most likely but lookin' for used. They are a grip of money for the working stiff.

I personally would not recommend running it on anything less than XR but I'm sure I'll take heat for this comment. I think I might have broken a drive once..... :party-smiley-004:

Ya gotta get off the gas when you are 20' in the air.:party-smiley-004: lol.

I'm going w a new igniton to pull the big 4 blade I'm running. I heard tose 5 blades are sweet for surface drives,, ?? What do I know..:lolhit:


http://members.cox.net/mcprodesign/Blown 27.JPG

I really dig that all-white look!

I've got a 28 LH Bravo I bought from Brett and a 28 LH Hydro that came with the boat. The Bravo is a great prop and the boat drives very well with it. You can sure tell the difference with the stern lift of the Hydro, though. I can only get about 4800 with the Hydro and a lot of trim. The Bravo will get just over 5100. They both carry about the same top end mph, but the Bravo is night/day difference getting on plane. MobileMercMan has a 26 Hydro he's going to let me try to see if another 150rpm or so will get me some more top end. Don't know if I'll get to try it before spring, but you never know.

I got a righty 28 from Brett.. I tested a stocker 26 bravo.. got about 200 more Rpms w the stock 26. around 5400. right now I'm at 51-5200 w the labbed 28. Like 1 MPH more w the 28

ran the stock hydro prop...I think it was a 27
One thing it did for my boat is it threw a cool rooser tail .. top end was a little less that the brav..about the same as the 26. 52-5300 RPMs

The Hydro would get this friggin' air pocket around it when i turned that would not goway peacfully. so i went w the bravo..

Now i need to set my Timing at 32 instead of 30 and get a real ignition to pull the 28 maybe look at air flow into the motor some more. I get 100 RPMs more w the hatch open 6 inches,( held down securely w tiedowns)

we'll see

Chad

I do have to say that the Maximus props that we were using had the diffuser ring machined off of them. We tried one (left rotation) with the ring...the boat "walked" sideways about 5' at around 90mph:eek:. The ring added to much stern lift.

Are you implying that my boat has ever gotten a little air?

I tryed a p5x and a maximus on my 29 ant the plaining was much better not a big difference in midrange and I lost about 2-3 mph on the top end with both. But the best part was how it handled it turned 10 times better with the 5 blade i really liked the maximus

Just Don't Forget
 

There are probably not many boats that a "stock" Maximus will perform nicely out of the box for.

It will require some finesse and patience to get it where you want it. It can produce good top end if labbed by someone who knows what they're doing.

I never tire of seeing the picture of you piloting your beast as the amazed onlookers look on.
:drink:

post it up :)

Well thanks but when did you ever see any onlookers lookin' at me?

:party-smiley-004:

in the picture there was people in a boat in the background. no?

that fkn nose is 20' in the air and I see people
:lolhit:
http://www.offshoreonly.com/forums/a...353-large-.jpg

uh, oh yeah,, yeah I see some somebody too...

I was doing some top secret drop testing for Reggie. Overall, this boat is good.

:party-smiley-048:

Here's a more modest one...

Racerngr, sorry for the jack - -

Attachment 405651

I did get to try this prop and it made a huge difference. Gained 300rpm up top and had the speedo fluttering around 83mph. GPS wasn't working so I don't have a correct number. I like this prop and definitely see one in my future. With a good tune, I see 85mph out of my combo in cool weather.