Hydromotive P5X results are in
 

25 daytona single step. 7lbs procharged 502 mag

30 lab bravo =plained out good . Hit rev limiter 5400rpm 85 mph on gps
34 natural bravo= prop wanted blow out while planing. 5000rpm 91mph on gps
31 hydrmotive p5x = prop never blew out,plained out at 2100 rpms,boat turns better and seems like it runs smoother.5200 rpms 92mph on gps. I dont think the 34 bravo would plain out with full fuel and 5 people, it was on the verge of blowing out until about 45 mph. The p5x ran a little faster and it never wanted to blow out ever. Made the boat feel totally different. Seems like a great prop, thanks Julie at throttle up. I told her my numbers and she got me the right prop the first try!

Re: Hydromotive P5X results are in
 

We also tested another 25 daytona with a double step and a really high x dimension. He could not plain out with the 34. He was using a 32 lab bravo and clicked 112 on the gps. It also wanted to blow out a little. With the p5x he plained out easily and he went 115 mph on gps and he never blew the prop out.

Re: Hydromotive P5X results are in
 

What were your rpm's with the P5x? What were the rpms with your friends rpms

Re: Hydromotive P5X results are in
 

My rpms were 5200. His were 6300 on his recall tach. He thinks he could have went maybe a little faster but the rear of his boat was getting a little squirelly he said. I am not running a nose cone and he is. I wonder what that would do for my numbers. He of course is running a much bigger motor.

Re: Hydromotive P5X results are in
 

How did they carry the nose? I thought the P5X is a bow lifting prop. I run the regular P5s and the Spectre runs flat, but when I run the Bravo 4 blades, the nose is about a foot higher than when the Hydromotives are on the boat. I like the Hydromotives much better.

Re: Hydromotive P5X results are in
 

That is the problem, I was told, with trying to run a 5 blade on an eliminator tunnel. It picks up the transom too much and makes the boat feel loose.

Re: Hydromotive P5X results are in
 

good info on setups...
i have a 25 single step and have monkeyed around with many props...according to eliminator (jerry may), the single step should be setup to run "flat" and the two-step with 5 degrees of bow lift...

i tried a 5 blade 30p hering....blew out trying to plane..had major issues trying to get hering to "fix" it....it looks real nice hanging in the garage...

various 4 blade b1....and settled on a 32p non-labbed...right at 112 at 5600

my setup issue was to get rid of the 60-80 mph "hop"...i was told to have the "rake" taken out of the 4 blade to give a little more transom lift to make the boat run flat...

very interested in the details on the setup with the 5 blade hydro...where is the "x", how much trim, any mid range "hop"....

thanks
gm

Re: Hydromotive P5X results are in
 

How did you get your slip so low to get those speed numbers? As for the prop it is a bow lifting and my boat (single step) runs flat. Seans(double step) runs with the nose up. You can see light through the tunnel when he is coming towards you. I think maybe his x is too high,he said it is squirrely with any prop but it felt a little better with the 5 blade. We will measure the x's and post soon. Both boats at 90 mph the single step feels more stable.

Re: Hydromotive P5X results are in
 

10% slip is about right for a cat....
on the calculator...
5600 (hit limiters) @ 10% with 1.36 gears and a 32 pitch prop gets you at 115mph....so 112 was right in there...

i have found a big difference in props at "cruising" speeds.. i use 3000 rpm as my reference....i see 60mph with the 32p 4 blade...with the 5 blade hering it was slower (55 mph)...that did not make much sense to me...

are either of the 25's discussed above using a standoff box???

gm

Re: Hydromotive P5X results are in
 

No,I figured you must be runnin 1.36 gears. Did you notice a big diff with a nose cone?