CPP desapear from recreational boats Who gets the benefit of the crime ?

[kistinie]

Originally Posted by apex1

After 43 posts in this thread you still have no clue what a controllable pitch propeller is, nor do you know that they are produced by many companies and in serious numbers. Impressive how a simple person can ignore sufficient information and advice.

What is your real goal ?
You have answers and knowledge ? Be useful to the community, give names, models and descriptions of products for under 20 to 30 Kw power.

[thudpucker]

I drew one up on a Napkin today at Lunch. It's aimed at small HP engines and boats that dont need a lot of pressure on the props. My Jon boat for instance.

My prop is two blades, two inches of blade angle. IE: the blade is six inches from leading to trailing edge, and the leading edge is one inch behind center while the trailing edge is one inch in front of center. Two inches total.
Eight inches of blade. That should equal 32 inches of propulsion (without factoring in all the slippage) per turn at full deflection. Both fwd and reverse. Micro adjustable.

The Bearings lubed by the water are the big question with my idea.
My idea is for a Machine shop though. I doubt you could make one with a Hammer and tongs.

If I could use one of those drawing programs I'd post it.
Pretty simple really. Like Apex says, it's probably already patented in 30 countries.

[kistinie]

If patent is the only problem...no problem

China has enough lost on US $ treasury bonds to care about a respecting a forbidden or too expensive patent

If the product works and can be sold on a sufficient scale, they will find a way to make it and sell it.

[TollyWally]

It's not a conspiracy, it's lots of moving parts under stress in a harsh environment. It is intriquite parts precisely made out of expensive material in relatively small amounts.

[kistinie]

I guess it is not a conspiracy but rather negligence.
Product made on a large scale, price will dramatically go down

When i will be fed up to search reason in the old Occident, i will spend a year in china and do the necessary to output an hybrid product

[thudpucker]

Tolly I wish I could show you my drawings. My two bladed CPP has Three moving parts. Its pretty good looking if I do say so myself.

Right now I'm working on the Mfg of the parts. I dont want it to be an expensive thing to Manufacture.

Those one's your talking about are for real working boats with Powerful motors. I've seen the drawings on the inner workings. Amazingly complex. Look expensive to make as well, unless done on a very large scale.

[thudpucker]

Originally Posted by kistinie

Mmmmm I am dispointed, No informations ...
Stonewalling exercise

C'mon K, you dont seem to understand what we tell you. Your question has been answerd more than once.

I asked you pointedly if you understand the difference between CPP and CSP and you never answerd. How can we tell what you want?
You never gave us the size of the boat we should be dealing with.

The last thing You need to know is the U.S. Patent office.
Go there and search the files of old patents. I'd bet there are at least 20 'patents applied for' in the Controllable Pitch prop venue. Those patents will all be from the 1915 to 1939 area. Before that we Rowed or had larger boats with fixed props. After 1939 WWII was on and no ALuminum or Stainless was available. After WWII the outboards became numerous and there was no need for small boat CPP's

CSP is used on Airplanes more than boats. There must be a reason for that as well. Do some research there to answer your own questions.

While I realize you dont do well in our language, you still should't be slapping us around for trying to help you. It you! Not us. You dont seem to understand what we tell you.

I'm gonna guess that what you want us to provide something you can take to China and get them to Mfg cheaply.

That's a fools errand.
Nobody in Mfg would go into production on an item they will have a limited market for.

Quit stalling, ducking and dodging. Come out with what you want to know.
Answer with some kind of logical statment.
Not those links that lead us to a monumental amount of reading, and without knowing what you want us to see in those links. You can tell us what you want us to know. It's easy, try it sometime.

[kistinie]

je cherche une hélice à pas variable en continu pour un arbre moteur qui tourne en permanence
le mécanisme de commande doit pouvoir etre controlé de l'incidence maximum en marche avant jusqu'a l'incidence maximum en marche arriere le point millieu étant le point neutre.

Maybe in french i will be understood better ?

I have no inversion on the shaft
the shaft never stop rotating at the same speed, and always clockwise.
the pitch does all
Forward, reverse, neutral
The pitch can be changed manually as desired

Sorry for this communication problem, maybe just a question of words
in french CPP = hélice à pas variable and under this name is all kind of CPP, including planes. One and only name



i want to buy one
a new one
or a used one


And if i cannot buy one, i will make my own taking the best of patent i can find

[thudpucker]

Dont use the Initials K, I still dont know if you understand the difference between Controllable Pitch and Constant Speed.

Your shaft runs at one speed. Good we got that far.
How much HP, and how big of a boat?

Your right about my French. Its much worse than your English.

Originally Posted by kistinie

What is your real goal ?
You have answers and knowledge ? Be useful to the community, give names, models and descriptions of products for under 20 to 30 Kw power.

Idiot! I have given these info´s several times.

Originally Posted by kistinie

I guess it is not a conspiracy but rather negligence.
Product made on a large scale, price will dramatically go down

When i will be fed up to search reason in the old Occident, i will spend a year in china and do the necessary to output an hybrid product

You dont like to understand what I told you at least three times!
THERE ARE MORE PRODUCERS AT THE MARKET THAN EVER BEFORE, PRODUCING A WIDER RANGE OF MODELS THAN EVER BEFORE!
And in a direct comparison a CPP installation is NOT more expensive than a conventional drivetrain!

So, your whole Thread is like all your others, the pure nonsense!

More yachts are driven by CPP systems today than ever before! Hammer this into your empty brain, and stop arguing about a issue that not exists!
Go to China, very good idea! But go for at least 35 years, and leave the evil old technique behind you.

[kistinie]

Originally Posted by apex1

Idiot! I have given these info´s several times.

“Make the lie big, make it simple, keep saying it, and eventually they will believe it” A.H
“The most brilliant propagandist technique will yield no success unless one fundamental principle is borne in mind constantly - it must confine itself to a few points and repeat them over and over” J.G

I see you have great references for your communication technique.
If you have difficulty to understand the initials, i give you a trick, they lived in Germany, and hopefully for mankind survival, are now dead
Are you a kind of fan of this communication style ?

---------------------------------------

A 20 Kw PRODUCT for 3 to 6 tons boat

A MANUFACTURER
A PRICE
A PICTURE

Where ?

About manufacturers cited here along these pages, i have given a call to all and answer was always "Sorry no nothing"

[TollyWally]

Thudpucker,
You are correct about the units I was talking about. I am fascinated by your project. I hope it comes to fruition. Good luck and let us know more when the time is right.

[thudpucker]

I'm going to put it up here. Whoever makes it will be the good guy, and if he makes it work I'll put some candles on a cake for him.
Its gonna take a few more days of doodling before I can scan the doodles so you can read them.

Originally Posted by kistinie

Have you an idea of the price of the smallest CPP from West Mekan ?
I guess it is the HV25 with manual oil pump ?

Originally Posted by thudpucker

Kis, go to those Websites and find that info from a salesperson.

Originally Posted by kistinie

Yes !
But for 5 to 10 Kw engine i'm afraid the offer is very limited.
Last year i have seen on a racing 60" a prototype of hydrogenation pod (so reversible as any electric motor) using CPP, and i guess the commercial product is not very far from...But from where and when ?

And talking about it will autoprophetise its comming i hope, as industry is reading this forum !
Asking invoices to manufacturers will do the same !

So i've ask West Mekan and others, price and efficiency curves...waiting for answer

Originally Posted by gonzo

You are looking for information about a fantasy you created. There were never large numbers of CPP, whether in the 40's and 50's or any other era. A question based on a wrong assumption, specially when you demand a particular answer, will get you nowere; at least in the real world

Originally Posted by kistinie

A 20 Kw PRODUCT for 3 to 6 tons boat
A MANUFACTURER
A PRICE
A PICTURE

You bark up the wrong tree layman. You should remember your own foolish statements better!