The official hotboat.com "We get letters" thread

[2manymustangs]

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[Eli]

Sometimes I forget I'm dealing with professionals lol

I'm going to do my best to get what's left of this train back on track today. Wish me luck


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Hotboat...sound familiar? Lmao


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[HB Vic]

I'm a trooper


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[HB Vic]

I get pm's, but you can also email your questions to: info@hotboat.com


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[westair]

You are Trying to respond to every post,think about stepping back some and let the threads run.

Good advice right there ...... also don't keep threatening to ban or lock threads, (sounds a little childish) just do it if you feel the need and don't explain.

[HB Vic]

We get letters, #9:

"What is the difference between a regular prop and a labbed prop?"

Very good question. I'll do my best to give you a little better understanding of the benefits of a lab finished prop. But first, you might want to check out this video, pretty cool as it shows you how props are made.



One of the things you'll notice in the video is the cookie cutter nature of how props are made. Now think of how boats are made. Even the variation from one hull to another from the same manufacturer can be a huge, not to mention the variations in power, purpose, and weight.

The very basic principle of "labbing" a prop is balance, important thing not shown in the video. Balancing usually isn't done on a standard box props. So there are casting and other variations in the prop. Most of the time these variations are acceptable for most boats and most boating purposes. But for those who are looking for performance and longevity of their equipment, having your props labbed is money well spent. The very basic element of labbing is balancing. Anything that rotates has balance points. If your prop is poorly balanced it can cause vibration issues. Vibration on a piece of rotating equipment will eventually lead to failure. Bearing failure, bearing journal issues, and all sorts of other issues. The greater the piece of rotating equipment is out of balance, and the faster that piece of rotating equipment spins, the faster anything connected to it will eventually fail. Almost everyone has the tires on their car rotated and balanced during normal services. Why would you not have that $500-5000 prop balanced as well??

Another important factor in labbing a prop is essentially tuning the prop for your specific boat and maybe even your specific boating purpose. Changing the characteristics of your prop can greatly affect the performance of your boat. Size, cupping, thinning, and pitch can all be modified. These modifications can greatly affect the performance, efficiency, longevity of your running gear, and handling of your boat.

The vast majority of all props on any performance boats are lab finished.

Here are a couple of resources, random really, you might want to check in to for more detailed information or questions about having your prop(s) labbed.

http://bblades.com/
http://www.mercurymarine.com/propell.../testimonials/


I hope that answers your question.

HB

[Stainless]

Great reply HB, I thought I knew a lot about props, that video was very interesting! If you don't mind me adding a little, labbing also thins the blades for more efficiency, in other words a thin blade spins easier than a thick one. As a result engine RPM's usually increase with labbed propellers. Labbed props are more fragile and usually no warranty comes with them.


CH3NO2

[Menace Marine]

We get letters, #9:

"What is the difference between a regular prop and a labbed prop?"

Very good question. I'll do my best to give you a little better understanding of the benefits of a lab finished prop. But first, you might want to check out this video, pretty cool as it shows you how props are made.



One of the things you'll notice in the video is the cookie cutter nature of how props are made. Now think of how boats are made. Even the variation from one hull to another from the same manufacturer can be a huge, not to mention the variations in power, purpose, and weight.

The very basic principle of "labbing" a prop is balance, important thing not shown in the video. Balancing usually isn't done on a standard box props. So there are casting and other variations in the prop. Most of the time these variations are acceptable for most boats and most boating purposes. But for those who are looking for performance and longevity of their equipment, having your props labbed is money well spent. The very basic element of labbing is balancing. Anything that rotates has balance points. If your prop is poorly balanced it can cause vibration issues. Vibration on a piece of rotating equipment will eventually lead to failure. Bearing failure, bearing journal issues, and all sorts of other issues. The greater the piece of rotating equipment is out of balance, and the faster that piece of rotating equipment spins, the faster anything connected to it will eventually fail. Almost everyone has the tires on their car rotated and balanced during normal services. Why would you not have that $500-5000 prop balanced as well??

Another important factor in labbing a prop is essentially tuning the prop for your specific boat and maybe even your specific boating purpose. Changing the characteristics of your prop can greatly affect the performance of your boat. Size, cupping, thinning, and pitch can all be modified. These modifications can greatly affect the performance, efficiency, longevity of your running gear, and handling of your boat.

The vast majority of all props on any performance boats are lab finished.

Here are a couple of resources, random really, you might want to check in to for more detailed information or questions about having your prop(s) labbed.

http://bblades.com/
http://www.mercurymarine.com/propell.../testimonials/


I hope that answers your question.

HB

I would add to this and say do all your initial testing with stock props. Only then can you go to a prop shop with enough info to have your prop tuned. One guys bad ass lab'd prop may be horrible on your boat. I had a lab 32 on my boat when I first put it together. It handled like crap. It would lift the right sponson then the left then it would drop. Like a weird twisting porpoise. I tried trim, more throttle, less throttle didn't matter. Put a stock 32 on and the boat ran straight as an arrow. It isn't always this way but stock props are at least somewhat consistent. You can take your results to a prop guy and he can set you up with the perfect prop. Hope this made a little sense.


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[WESTERNAERO]

I've got a question..

The tags for this thread are: canned ham sucks, gn7 is rude, hotboat rules, rd sux, we get letters, whiny old people

What are these "tags"? What is their purpose?

[Menace Marine]

Great reply HB, I thought I knew a lot about props, that video was very interesting! If you don't mind me adding a little, labbing also thins the blades for more efficiency, in other words a thin blade spins easier than a thick one. As a result engine RPM's usually increase with labbed propellers. Labbed props are more fragile and usually no warranty comes with them.


CH3NO2

Good point. In a very simple way you can make a 30 cruise like a 30 but rpm like a 28. You can also change cup and diffuser dimensions to fine tune bow and transom lift as well. Prop tuning and testing is one of the most time consuming and over looked aspect of any boat setup. It can yield great results but takes patience.


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