Hydromotive P5
 

Hello Again,
Has anybody tried one of the P5's (including X or Plus) on a 24'. If so, I would really like to know how it worked for you. I would like to push one at about 5,000 rpm.
Thanks,

Re: Hydromotive P5
 

T-Mone runs a P5X on his 24' Pantera and loves it. They are big $$ though...
You definitely want to run round ear props not cleaver style...

Re: Hydromotive P5
 

X should work great but I've heard about the additional stress it puts on the drive in higher HP applications due from less slip.

Re: Hydromotive P5
 

Razor, thats quite a prop,I would say close to 2 grand labbed. Call Throttle up...........go to Prop Talk on this board.

Re: Hydromotive P5
 

Thanks,
I would not get it labbed and can find them for just under a 1,000.

Re: Hydromotive P5
 

Jcap runs P5Xs on his Y2K and OH-Zone is now dialing in around one as-well. I don't believe the OH-Zone has found it to be faster top end than a Bravo I though.

Personally I don't want to spend the $$ for one. I would like to find a good used 28p Bravo to have labbed. Anyone got one?

Re: Hydromotive P5
 

I used a Ron Hill 5 Blade 23" pitch on my 24" Superboat this summer, it worked out real nice I got those extra few MPH I was looking for very stable allot of mid rage rpm. I stepped up from a 23" Mirage Plus, and I has a 24" 4 blade hydromotive that worked out great with the 24' Super. I usally ran anoud 5000-5300 RPM. Mid to upper 60 MPH Range, with a 454BBC and TRS.

Re: Hydromotive P5
 

Thayes Can you post some comparison numbers like the mirage 23 ran 40 mph at 3000rpm and the 5 blade ran what ? And when do we get some picks of the new TOY ? Just came across a thread in (PROPS) about best top end prop. Yes its a HERRING. Worth the money Im wondering how the 29 Activator in the shootout would have done with a bravo prop like the Superboat had.

Re: Hydromotive P5
 

Just did some prop slip numbers on on OZONES shoot out against the Activator. Assuming 5000rpm 1.5 gear 29p and 77mph = 15% slip Add a Herring and make the slip 8% the speed goes up to 83mph I think We have a new winner.

Re: Hydromotive P5
 

3 blade Mirage plus 21" 5300 RPM 64/65 MPH 4 guys in boat. (3 balde Mirage Plus 23" 5000 RPM 62/63 MPH) (Hydromotive 4 blade 23" 5000 RPM 66/67 MPH) (Ron hill 5 blade 23" 5000 RPM 68/69 MPH) I have turned over 70MPH a hand full of times in a rough chop with the Hydromotive and Ron Hill propellers. Both worked great with the TRS and 24' Superboat. Hopr that helps.

Re: Hydromotive P5
 

Mike, won't the X dimmension play a big role in the Hering prop? If you don't raise the X, are you going to see any improvement? But then, maybe most Y2K's have to high of an X anyway. :eureka:

Re: Hydromotive P5
 

When Tim had his 525 Y2k he added a 2" spacer with no improvement on speed.

Re: Hydromotive P5
 

He never tried a Herring either......

Re: Hydromotive P5
 

I would like to spin a Herring next year, until any HP upgrades are made that prop is the way to go.

Re: Hydromotive P5
 

I wonder what Oh Zone would have done with one at the Speedboat trials ?? ;)

Re: Hydromotive P5
 

Perhaps there will be a herring in his future.

Re: Hydromotive P5
 

And maybe Superbabi's ??? :)

Re: Hydromotive P5
 

I thought OH-Zone would have chimed in on this thread by now. I do believe he bought a P5X and is in the middle of dialing it in with Throttle up. Last he told me was the slip numbers are down from with a B1, but the speed is not up.

I am surprised because Jcap reported that his boat was 3-4mph faster with a P5X right out of the box.

Speaking with T-Mone, he told me his 24' Pantera was also faster with a P5X than 4 blade props and the same top speed as a 3 blade. T-Mone's reasons for laying out the $$ were more about the rough water handling though.

Re: Hydromotive P5
 

I tried a P5 and saw +5 mph at 4000 rpm and +3mph at WOT on the same day, same conditions. It's where I'm headed, but after a 1" drive spacer gets added. JC says the X dimension is right-on, he has played with raising and lowering 1". Jcap saw improvement with 2" spacer at speeds in the 90's. We've all said the Y2K needs bow lift, so I'm going to add some next week and I'll post the numbers before and after on a Bravo 1, after the weekend of Dec 11th........if all goes well - stay tuned!

Re: Hydromotive P5
 

Alright Krak, you the man.

Re: Hydromotive P5
 

Never Delt With Herring Before. I Think Its 6 Months To Get One Unless You Know Someone. Their Not Cheap Either, And Yes More Than Double For A Speedy.

Re: Hydromotive P5
 

Zup,
Getting props for your Speedmaster has been difficult and expensive. Is there no adapter to use Bravo type props?
Or are the Bravo props just too small in diameter?
Does Merc make a round blade type prop for your drive?

Re: Hydromotive P5
 

I made the adaptor for the conversion but the diameter of the prop is a problem. Even having lowered the drive to 3 inches below its just not happy. You would think that using a speedmaster drive you are using more diameter of the prop because the hub is only 2 inches wide compared to the bravo hub at 6 . The only person that make a speedy spline round ear is HOSS. Herring makes a cleaver with round ear carractoristicks. Their is a guy running a herring and has to put weight in the nose because its to flighty.

Re: Hydromotive P5
 

There seems to be a bit of confusion here...FYI for the photoshoot I ran a 28p Bravo 1 labbed (JC's) prop. The 29 I had just got back after hitting a sandbar I was not happy with so that was the prop I ran with. That prop I hit the limiter pretty hard. Currently I have a 30 being cut down to a 29 @ Bblades(Similar to the prop I bought from et5508) only Brett and I are discussing just how we are going to to it. I tried the P5X 25p and again hitting the limiter hard. I tried the 26 but was 5150 rpm @ 74ish with a huge gain in midrange over all others. Gene at throttle up was given the results with working either prop. I felt we should work the 26 but ultimately he bent the 25 into a 25.6 being his recomendation. I only tried it once with T-Mone on a very windy(50 mph) Sunday. Running 76.4ish. Not real impressed but not a good day for optimum results. I was still hitting the limiter when trimming up. Problem was It was hard to determine if the bow was starting to drop or was it the wind. I still believe I should have gone with the 26 and worked backwards, two different schools of thought. Genes was that the 25 worked better all around so thats why he worked that one up. Anyway I ran out of good weather and the headbolt and headgasket recall has sidelined me till next season. There ya have it right from the horses mouth. Sorry for not chiming in earlier but I've been busy at work...

Re: Hydromotive P5
 

Other talk on the prop subject...
http://www.offshoreonly.com/forums/s...544post1551544

Re: Hydromotive P5
 

Keith,
Any luck with the prop?

Re: Hydromotive P5
 

Unfortunately no - last week I caught a cold, and this week we have big north winds - living in a coastal area, that means the local water gets sucked out of our lake and the boat ramps sit high and dry :(.

The spacer is in my hands, as well as a XZ gear set. We've also been in close communication with Lavorsi and they are working with me to try the wireless transmitter for the steering wheel to operate the trim tabs - they know of the issues and think they have a way around it - more on that one as we get it working, R&D can be fun or frustrating, we'll see!

Back to props - right now, today(Friday) may offer me a window to make a pre spacer run to get numbers, but this weekend we're expecting heavy rains and 30mph north winds. Not good for speed runs, but I'm trying!!!

Re: Hydromotive P5
 

Keith, still with us??? Hydromotive?

Re: Hydromotive P5
 

Yep! I'm here!! - strong north winds took our water away!!!! Well, the new schedule looks like this Saturday I can do the speed runs and then next week the spacer - hang in there, it's going to be 78 on Sunday here!!!

Re: Hydromotive P5
 

:woohoo:

Re: Hydromotive P5
 

:(

Re: Hydromotive P5
 

Why the sad face!!??? I got out there this weekend, mostly pleasure running as it was 75 on Dec 31, and we saw 81 on Jan 1!!! Gotta love it!!! I did do the speed runs, and RA took some photos and video - I'll post them soon as I can figure out this new camera. I think the Y2K needs some bow lift still.

Ok - the prop testing - here's whats up so far:
I've added the 'stuff' I intend to keep on the boat all the time - tools, cushions, potti, etc etc (still have to add the stereo and a few speakers). Ran the Bravo I again, on a nice cool day with 1/4 tank by myself. Stock 496 Mag HO with K&N, with 139 hours.
GPS Numbers: @3500 = 44mph, 4000 = 54mpg, WOT = 71.8

Came to the bulkhead and removed the exhaust restrictors under the riser elbows, ran again but SAW NO GAIN at any rpm!!!!! The boat does sound better and it seemed to breathe better, so I think I may see some improvement in warmer weather, who knows....

Next step is to run the same prop after installing the 1" drive spacer this week, then get these numbers to BBlades to fine tune a prop.

Remembering the P5 Hydromotive numbers, I saw:
GPS Numbers: @3500 = 47.5mph, 4000 = 57.5mpg, WOT = 73.8

So, I'm hoping BBlades can beat even that, with the spacer. I'd really like to see 75 with the stock set up I have, then it's prob time to think about big cubes or Whipple......

Sure do wish some of you other guys would post numbers like this - my runs are the average readouts for about a three-four mile run both up and downwind.


Enjoy!!

Re: Hydromotive P5
 

Thanks Keith. I think a drive spacer is the way to go also. When I trim all the way up I can see a big increase in rpm with no increase in speed. What is the starting point on the drive spacer? I'm thinking 1.5 inch. spacer and a P5x prop.

Re: Hydromotive P5
 

Well that's the guessing point. These spacers are very expensive; I called JC and he said he has tried plus and minus two inches and placed it where he did based on his trials. I had to choose, so I talked around the shop and decided on one inch, but not much reason as to why, so we'll see - my shop said they'll buy back the spacer if it doesn't work for me, so all I have to lose is the time and effort.

Trying to get the boat in this week for the spacer and run her this weekend, so I'll post again later this week - we're forecasted for the mid 70's all week!!!!

K

Re: Hydromotive P5
 

Keith I am very intrested in how this spacer works out for you. Tim ( 5508 ) saw no better top end on his Y2K ( coens former boat ) Any way keep us posted on the never ending QUEST FOR SPEED !!!!!!

Re: Hydromotive P5
 

You bet Gary! I hope with my power setup and all the real data I've got I'll see some improvement, mostly in handling and a little speed - my experience so far is that JC and Rick have these boats right!!!! I'm just having a bit of fun trying to fine tune....

Re: Hydromotive P5
 

OK, I need to jump in on this. I did not have good results with the PX5. PX5 26p = 74.5 @ 5600 rpm compared to Bravo 1 28 = 81.5 @ 5400 rpm. I have approx. 600 hp and was hoping for a little more. I have added a Whipple so hopefully I will get close to 90 :D .

After reading through some info you guys have posted, it seems it may be my X dimension. Mine was set 1"-1.5" above what comes from the factory. With everyone trying spacers I'm starting to think maybe I'm too high???

Re: Hydromotive P5
 

Well Pure E, I can't tell you where to start, but it looks like you've got some good data, so try calling BBlades or Throttle Up perhaps to discuss? This subject gets out of hand too fast, with everyone giving opinions, so I'm simply trying to imrpove my top end, and providing the real data as concisely as I can along the way. Everyboat is different, and I know for a fact my Y2K is weight sensitve and bow lift sensitive. When I see her in videos she doesn't seem to carry enough bow so I'm trying to get more lift. If I had to guess, I would agree with your thoughts though.....

Re: Hydromotive P5
 

That does not make sense. There had to be something different, like water conditions or weight.

Re: Hydromotive P5
 

Oh, it might be so...
Speeking with Oh-Zone, he has seen better top speed numbers with the B1 vs. P5X as well.
Remember, his ITS is set with the prop shaft 1" higher than the "stock" position.
Like Krak said, every boat is different... :drink: