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

[peter radclyffe]

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

it will get you into any parliament

[thudpucker]

I didnt understand Pete's post!?

TollyWally, for your nice big Tolly's, and other large craft, the Hydraulic or Mechanical gear'd CPP is out of the question. Too much breakable stuff.
Pulling one of those nice big boats is just too expensive a process in time and money, to work in a mess like a CPP.

For my little skiff or Jon boat, it's a pretty doable thing.
Lots of whirling parts that drag. Consuming lots of HP. But in a light skiff weighing in at less than 200# Total, its not too much of a price to pay for an inboard with a reversing mechanisim.
It's just sort of un-necessary though since we have outboards that weigh less and perform better.
It's an Idea a lot of guys might try....including myself.

[peter radclyffe]

Originally Posted by thudpucker

I didnt understand Pete's post!?

TollyWally, for your nice big Tolly's, and other large craft, the Hydraulic or Mechanical gear'd CPP is out of the question. Too much breakable stuff.
Pulling one of those nice big boats is just too expensive a process in time and money, to work in a mess like a CPP.

For my little skiff or Jon boat, it's a pretty doable thing.
Lots of whirling parts that drag. Consuming lots of HP. But in a light skiff weighing in at less than 200# Total, its not too much of a price to pay for an inboard with a reversing mechanisim.
It's just sort of un-necessary though since we have outboards that weigh less and perform better.
It's an Idea a lot of guys might try....including myself.

its good to know your not a politician

[kistinie]

my need for a light CPP is almost compulsory

Can anybody help to answer theses questions
How much $ or € ?
How often MTBF ?
% Mechanical loss ?

[TeddyDiver]

Originally Posted by kistinie

Can anybody help to answer theses questions

How much $ or € ? Quessing.... a real thing up from 6000€? Second hand from Norway might start from 1000€ (oldies... )
How often MTBF ? Depends
% Mechanical loss ? Depends..

[TeddyDiver]

http://baatplassen.no/p/showproduct....duct=439&cat=7
This one is new but without gearbox and too big for you..

[kistinie]

Thanks.
About MTBF and % efficiency, any numbers or is this top secret to keep ...secret ?

[FAST FRED]

Check out Gori ( http://www.gori-propeller.dk/Index.asp?ID=86).

This is only a 2 position unit , but at cruise it will drop the rpm about 400 and increase the load at cruise by about 20% , perhaps enough to gain efficiency at the usual underloading of cruise.

"About MTBF and % efficiency, any numbers or is this top secret to keep ...secret "

What you need to get is called a "FUEL MAP", usually not given out , but you could ask.

FF

[thudpucker]

Originally Posted by kistinie

my need for a light CPP is almost compulsory

Can anybody help to answer theses questions
How much $ or € ?
How often MTBF ?
% Mechanical loss ?

K are you talking about a Constant Speed Prop, or a Controllable Pitch Prop?

[kistinie]

I need full pitch change; continuously from Forward to Reverse !
Thanks for help !

[thudpucker]

K, Constant speed refer's to an automatic pitch control based on shaft RPM.

As in using fly-weights to make the prop grab a bigger bite as the speed of the prop increases.

Controllable Pitch is a method of selecting a rich or lean bite from some control lever in the cockpit.

From those descriptions, which are you needing?

I dont have your answer, I just wanted to understand your question.
Did you look at Fast Fred's link to the GORI propellor. I did but couldnt view the movie. It looks like it might work on engines as small as a 2.5L four cylinder.

[TeddyDiver]

Originally Posted by kistinie

Thanks.
About MTBF and % efficiency, any numbers or is this top secret to keep ...secret ?

MTBF and effiency are both dependable of the unit, load, engine power and how it's used etc. For sure there's such data of fishing vessels with cpp screws and especially the effiency is the main promoting argument for them..
Believe thou that such data is mainly available in Danish or Norwegian.. ?

Originally Posted by kistinie

In a way yes.
But "Gonzo" is by definition being implicated in the subject and having a partial vision.

So whatever the number of products, they were, they are not any more...
what is the cost to have them again.

Are you now complety nuts? Did´nt I tell you that there are more producers and products on the market today than ever before?

Read my posts even if you do´nt like it.

And Thud:

Still, I'd like to see some details, drawings, dreams, etc. Give me a chance! I might be the Handyman we are looking for.
Dick

Thanks, really no need! The complete Scandinavian fishing flotilla uses extremely well engineered and reliable (and affordable) CPP´s since ages.

[kistinie]

""Gonzo journalism is a style of journalism which is written subjectively, often including the reporter as part of the story via a first person narrative. The style tends to blend factual and fictional elements to emphasize an underlying message and engage the reader. The word Gonzo was first used in 1970 to describe an article by Hunter S. Thompson, who later popularized the style. The term has since been applied to other subjective artistic endeavors."

Cardoso claimed that "gonzo" was South Boston Irish slang describing the last man standing after an all night drinking marathon


http://en.wikipedia.org/wiki/Gonzo_journalism


Now, my answer was more a joke than pure serious, keep cool !

i need to control manually the pitch, Gori or Brompton will be second choices if true CPP isn't availlable for project

>>>>>>>>>>>>i need to control manually the pitch, Gori or Brompton will be second choices if true CPP isn't availlable for project<<<<<<<<<<<

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.