How fast will PII go with 200 Yamaha VMAX HDPI with 25 pitch?

This topic has 7 replies, 5 voices, and was last updated 16 years, 4 months ago by Flyswatter.

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January 28, 2010 at 5:08 pm #426050

2009BCPII
Participant

Since I bought the Pantera II with 200 Yamaha HDPI with 25 pitch last December, I havent driven it yet and will need to break in before I can go full throttle. Not only that, I broken my lower leg (14 screws and a plate installed) by fell on ice and I wont be able to get in the boat till April – Doctors order. I have been obessed about the max speed it would go. I was told it could go between 70 – 75 mph. I am sure that some of you have the simialir boat to mine and if you dont mind share that with me.

January 29, 2010 at 2:01 am #426056

Bass Cat Boats
Keymaster

I dont understand what you mean by walking it when it goes over 70 mph? Please explain more – I am learning the boating language.

January 29, 2010 at 2:04 am #426057

Bass Cat Boats
Keymaster

That would be what they are calling chine walk, though we find that most chine walk is self inflicted by the driver. BCB

January 29, 2010 at 2:12 am #426058

TnSabre
Participant

A boat will start “chine walking” when it gets up on the pad of the hull at high speeds. The torque of the motor, wind, small cross waves will push the boat off to one side of the pad and when this happens the boat will start bouncing back from one side of the pad to the other. If the driver does not counter this action the boat will get worse and become out of control. It is very hard to explain this, but I gaurantee you when you get the motor broke in and open it up for the first time, you will find out real quick what I am trying to explain. You do not try to drive through it as some try to tell you to do. You have to counteract by feeling what the hull is trying to do and bump it back up on pad. Once you get the feel of it you can actually counter this almost before it even gets a chance to get started.

January 29, 2010 at 2:52 am #426059

Bama96
Participant

I had an 08 P2 with the Yamaha 200 HPDI. 25M Yamaha prop. With just me, 64″ 265lbs, 3/4 tank of fuel, and moderate tackle I hit 74. It will run 72.5 to 73 all day long. The boat will snatch your neck out of the hole and gets fun to run over 70 mph. You have to drive her but she responds very well with slight wheel adjustments. Mine was at about 3/4″ to 1″ above Flush on the plate. That hull is a hot rod. I have heard of Classics hitting 78. I would be curious what a 25 or 26 Fury prop would do on this setup.

January 30, 2010 at 8:46 am #426060

2009BCPII
Participant

If I replace it to 26 or 27, would it increase the speed or …?

January 30, 2010 at 12:41 pm #426061

TnSabre
Participant

If you go up in pitch it will increase your top end speeds as long as your motor can keep turning the rpms. What will eventually happen is your pitch will be too much and the motor will not turn enough rpms on top end and you will lose speed and it will hurt your holeshot more then anything. Once you get your motor broke in and get several hours on it then you can start trying to setup you combo. Anytime you are setting it up for best performance you need to keep in mind how much fishing gear is in the boat, how much gas, how many people, air and water temps and livewells empty or full of water. Weight in a boat, air temps, and water temps play a big factor in how a boat performs. Try to simulate how you normally will be weighting the boat down when you start setting it up. A boat is going to run faster in cool air temps and cooler water temps also.

January 30, 2010 at 1:31 pm #426062

Flyswatter
Participant

Additionally, motor height and trim plays into your speed and rpms too. The more you can get your boat out of the water equals less drag which means faster speeds. There are lots of factors to setting up a boat for optimum speed. Just be sure that you have a minimum of 12-15 psi of pressure.Flyswatter
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