Torque shift prop

matiboy · 27 November 2002, 19:35

came across this or similar design at the boatshow once, it does seem to be a superb solution for the age old problem of what prop size

would seem to give your boat an automatic gearbox so to speak

they only seem to be available for larger outdrives ?

http://www.land-and-sea.com/marine/t...rque-shift.htm

Garygee · 27 November 2002, 19:43

Look good, but I would think twice about spending $1000 on a prop. Knowing me every log, rope, rock would make a bee-line for me

Gary

Daniel · 27 November 2002, 19:51

Land and Sea have failed to reply when i have contacted them in the past about shiping items to the UK.

[disclaimer]
That's not to say they won't - just relaying my experience.
[end disclaimer!]

Daniel

matiboy · 27 November 2002, 20:00

that if someone could produce a sensibly priced similarly designed prop that has adjustable pitch, ( not necessarily a fancy automatic adjustment , but manually adjustable to suit different uses ) they would make a killing

but heh what do I know

anybody know of such a prop other than the pyranah nylon job with removable blades ?

Mike Garside · 27 November 2002, 20:01

Thanks for the lead Matiboy. I have emailed them for a recommendation of the right model for my Yanmar 300/Bravo 2X combo.

Sounds almost too good to be true. Anyone had experience of variable pitch props?

John Kennett · 27 November 2002, 22:32

Don't you lot read the other forums here?

John

thewavehumper · 27 November 2002, 22:38

Am i right in saying theat these only work with Stern drives andnot Outboards

Mike Garside · 28 November 2002, 10:05

Not according to the web site, Stuart. They have them for inboards and outboards.

Mike Garside · 28 November 2002, 10:11

Quote:

Originally posted by John Kennett
Don't you lot read the other forums here?

John

Usually, but missed that one, John. Thanks for the link.

John Kennett · 28 November 2002, 10:45

He he!

A bit spooky the same thing coming up apparently independently in two threads at the same time!

These props look like superb bits of kit, if they're anything as good as they say. The variable shift should get round the gearbox wrecking upshift of the normal two speed versions.

I would be interested to see how they cope when driving a RIB on the throttle through big waves though.

John

Jari Hjerppe · 30 November 2002, 20:50

If the Pro Pulse is new brand for you, check out www.propulse.se
They make adjustable pitch props and from the web site you can find some tests of the Pro Pulse props.

Jari

TIM · 02 December 2002, 08:30

Does anyone have any experance with these propulse prop?????

Do the perform as good as Alu or S/S????

Manos · 02 December 2002, 17:47

...well if these props work under the same principal of the variable pitch props on ships then they should be OK.
I spoke to the Falcon lads in SAfrica and they use the jackplate this company produces on their racing RIB.
They are happy with it.
If these props do not cost the earth I will order one SS 23" pitch for my 200 VMax.
Will let you know for the results.

Cheers

matiboy · 02 December 2002, 18:42

looks good, anybody figured out who uk distributor is ? as they appear to produce model for my size engine

probably one to have a good look at the boatshow

jwalker · 02 December 2002, 19:41

Hi, Yeh, 2 forums at once, a bit of a coincidence indeed. The torqueshift loves jumping waves. It also is designed for V4's and V6's. Mine's on my 6.5 metre 200hp. It makes landing nice and soft 'cause you keep drive as the prop re-enters the water.
It also drive you up the back of a wave when everyone else is slowong down.

Ask me another. JW

Mike Garside · 03 December 2002, 07:07

JW, thanks for replying to my email about the Torqueshift prop. I am replying to you here because I think there may be others who would like to know it won't work for them either.

I did actually get an answer to my email to Land and Sea in the States and they said the same as you - that it won't work for a slow turning diesel engine. This is because there is not enough centrifugal force. In essence they said their prop is designed to allow sports boats to pull up water skiers easily without losing top-end speed.

Seems a shame that us diesel types can't take advantage of what is obviously a brilliant piece of engineering.

Thanks again, Jeff.

Cheers.

Keith Hart · 03 December 2002, 07:45

I've just checked out the propulse website (although there is nothinbg there for my tiddler). What a damned good website. Clear instructions and pictures, very good if you are buying one of their props.

Keith Hart

matiboy · 03 December 2002, 19:18

emailed a local dealer (quoted on plastimos web site) to try and get a price for my outboard, will post result