VR1 Pit Bull hit 77mph@4500rpm,27 Hydromotive high 5

PIT BULL · 09-19-2009, 05:12 PM

%-0.003851851851851773,,,,Negative slip???????????? I must say the wind was definitely working in my favor. And yes I am going by gps. Otherwise I saw 74 in change with no problem. Maybe my tach is effed up???

Velocity Vector · 09-20-2009, 04:48 AM

Quote:

Originally Posted by PIT BULL

%-0.003851851851851773,,,,Negative slip???????????? I must say the wind was definitely working in my favor. And yes I am going by gps. Otherwise I saw 74 in change with no problem. Maybe my tach is effed up???

Felt good didn't it.

JohnSchiavarelli · 09-21-2009, 02:49 PM

Pit,
Did you just switch to the 5 blade hydro?
I just put a 26 P5 on my 260 with 540Ci 640 hp motor.. Good running prop.. Lost a little on the top end compared to the 26 bravo though..

PIT BULL · 10-05-2009, 08:54 PM

So the second tach verified my rpm was correct. The leak down I did on the engine tells the story of why I couldnt break4500. The doosh bag I am in the process of sueing for the attempt at rigging my boat hooked up the sea water pump backwards which led to me over heating the engine first start up. I should heve the heads back on it next week for the real number.The high 5 is the only prop I have had the chance to run. Just got the boat togrther last month.

DisturbedVelo22 · 10-08-2009, 11:29 PM

Whats you drive ratio? You must be getting hooked up alot better than me with that 5 blade, best I could do with a 4 blade hydro 28 was 78.3 at 5450rpm. 1000rpm more and I'm only going 1 mph faster.

PIT BULL · 10-09-2009, 11:03 AM

What hull do you have? Keep in mind I have a race boat that weighs about 4500,lbs.

DisturbedVelo22 · 10-10-2009, 08:15 AM

Quote:

Originally Posted by PIT BULL

What hull do you have? Keep in mind I have a race boat that weighs about 4500,lbs.

A 22' so i'm about 1400lbs lighter

PIT BULL · 10-10-2009, 11:36 AM

How much HP?? What speed@ What rpm??

DisturbedVelo22 · 10-10-2009, 07:25 PM

hp500 so 470hp 5450rpm, 78.3 gps. I know the rpm is right because I'm up against the rev limiter, the speed is on gps. 1.50 bravo drive.

PIT BULL · 10-10-2009, 07:43 PM

My boat ran about 83 with an HP500.My engine is a 509"585tq/595hp at the crank.Steve Stepp told me I might see 90. I would think you should be in the 80s.Do you see a tall rooster?Does the boat chine walk?Have you measured the height of the gear case?