RPM / Prop / Speeds
 

What rpm props and speeds are you guys using and seeing?
GPS only guys.

4900 / Mirage Plus 23 / 64mph.

Re: RPM / Prop / Speeds
 

Hey Storm,
My 89 24' Pantera ran 64-65mph at 4600-4700rpm with a 23p Mirage plus...

Re: RPM / Prop / Speeds
 

Pat is that GPS?

Re: RPM / Prop / Speeds
 

When I had my 24, I ran 72 with a 25 Mirage at 5200 rpm`s.....

Re: RPM / Prop / Speeds
 

are we just talking about 24s?

Re: RPM / Prop / Speeds
 

28s are fine too. slip% should not be too much more, per Jo.

Re: RPM / Prop / Speeds
 

stock 24p B-1 @ 5900rpm 75mph, labbed 26p B-1 @ 5900 78.7(new jersey) cool air, water, low humidity. (Florida) in warm, humid air, water ...i lose about 2 mph

Re: RPM / Prop / Speeds
 

Yes Storm, GPS numbers...
The same boat also ran 62-63mph with a 22p Bravo I at 4900rpm...
I think my Sport model may have been a bit lighter than your SE.
I spoke to JO a lot about props when I had my Pantera. He told me that when they rig a 24' with a 310HP/7.4MPI they see 65-66mph at 4650rpm with a 23p Mirage +. My boat never did that well, but it was close.

I see vary similar results with my 24' Super. She tops out at 67+mph with a 25p Mirage+ at 4400-4450rpm.

Your Tachometer may be off a little...

Re: RPM / Prop / Speeds
 

Pat, how could this be checked... its a new Livorsi.
Could it be the sender?
How can I make sure its right on this time around?

Re: RPM / Prop / Speeds
 

My 28 spins a 28 Hydromotive, 5500 rpms, 85 mph on the gps, that will be a 12% slip, which is ideal.

Re: RPM / Prop / Speeds
 

I would suggest to compare to a second tach. There is no real sender, it's just a signal wire from the distributor. Your engine builder will have an easy way I'm sure.

Re: RPM / Prop / Speeds
 

Albert, how much HP/Torque you running?

Thanks Pat.

Re: RPM / Prop / Speeds
 

700/720

Keep in mind, I have a very light 28 race lay up with a notch transom not to be compared to any pleasure 28....

Re: RPM / Prop / Speeds
 

Im running a 31 pitch at 6200 rpm and saw 98mph

Re: RPM / Prop / Speeds
 

Hey guys I am running a labbed 27 pitch mirage plus at 5600 rpm and 81.7 on gps that was in Tampa Bay 83 Deg High humidty. I will be posting info on my prop session with Throttle up and hydromotive over the weekend.

Re: RPM / Prop / Speeds
 

look forward to hearing it anthony.
I've heard(from JO) the hydromotives tend to give stern lift, where the pantera 24 likes bow lift.
What torque you running?

Re: RPM / Prop / Speeds
 

Ran 82.8 with a 25P Mirage Plus @ 5400 RPM on the limiter

Ran 84.7 with a 29P Mirage @ 4700 RPM

Ran a 27P Mirage Plus but GPS batteries died!!!

Re: RPM / Prop / Speeds
 

I saw this on the Gen Disc. board, but how do you compare a B1 to a Mir plus?
They were saying a 25mir+ is like a 24B1.

Re: RPM / Prop / Speeds
 

Hey storm I have the dyno sheets in front of me. I will give you the numbers that are the closest to how the engine is tuned for reliability wich is the way I have it set up in the boat.
(5000)- 542 HP 569TQ (5500) - 567HP 542TQ
(5100) - 547 564 (5600) - 571 535
(5200)- 553 559 (5700) - 572 527
(5300) - 559 554 (5800) - 576 522
(5400) - 564 548

Re: RPM / Prop / Speeds
 

Hey sorry that post look like a bunch jumbled numbers but I am sure you can figure it out. Anthony

Re: RPM / Prop / Speeds
 

T, good deal. I think you'll be running more torque than me.
Trying to figure out what kinda prop I can run, and what speeds I'll achieve.
Thinking I'm gonna be running hi 70s.
Dyno is next week.

Re: RPM / Prop / Speeds
 

Hey let me know how you make out. I had a great time testing props a couple weeks ago i will post info over the weekend. I am running to Fl. to tow the boat home in a couple weeks we have to get together on the water Later Ant.

Re: RPM / Prop / Speeds
 

I have found that a 26p B1 is closer to a 25p Mirage +.
On my boat, 26p B1 was about 100rpm less than a 25pM+.

I suggest that you should start with a 26p Bravo 1.
You will probably see 5300-5400rpm at 80mph... :drink:

Re: RPM / Prop / Speeds
 

Pat, nicely optimistic. :D
Jeff thinks I should start w/ a 24B1.
sounds kinda small to me, but he's giving me them to try out.
Jo/Pepe will give advice and so will matt from Throttle UP.
Gotta love this board.
I'm gettin anxious. :woohoo: