FreedomYachts.org

GEORGE,
A KIWIPROP JUST CAME UP ON TRADEME ONLINE AUCTION. ITS AT THE OTHER END OF THE COUNTRY FROM ME SO I CAN'T INSPECT FOR YOU. LINK IS http://www.trademe.co.nz/Trade-Me-Motor ... 620306.htm
YOU CAN EMAIL ME ON ptpc@clear.net.nz IF I CAN BE OF ASSISTANCE. (OUR HOME COMPUTER IS AWAY BEING FIXED)

BEST REGARDS,

Mike that's awesome and we want that prop. Unfortunately I'm not able to register to the auction site because I don't have a kiwi phone number? I've also emailed this to you. Any suggestions?

Thanks so much for thinking of us.

George

I can't believe I let that get away. I don't know what I was thinking but I originally thought I had until tomorrow. I went to sign up on the auction site just now and saw that I missed out. Arrrrgh!

George

Hey George,

I am also thinking of getting a Kiwiprop for my F-40 CK. Do you know if there is sufficione clearance for the prop in the hull-rudder opening? Kiwi's site mentions from 16.5 to 18.5" diameter depending on transmission.

I meant to dive and measure it last week-end, but the water is still a little chilly (even in Georgia).

Any ideas in sizing? (perkins 4-108 and Hurt/ZF 12M tranny, about 2:1 A and 2:7 B) Std F-40, I suppose).

Cheers,

Alex

Hey Alex,

The answer is: I don't know. I've been told that they do fit. We will haul out later this spring and I'll know then but right now the water temp is still 50 here! What propeller are you using now if I might ask?

George

Hi,

The boat has the fixed two blade prop that came with it. I am not sure of diameter or pitch. It feels a bit underpropped. I get about 5 - 5.5 kts @ 2800 rmp. After that the engine will rev up to 3800 or more (and aboput 7 kts) but feels underloaded.

I mostly want the folder for performance sailing though.

I may try to check it out this week-end.


Cheers,

Alex

Ok! I'm still not sure the kiwiprop will fit on the F-40 CK. I took the plunge yesterday. Not sure if it was great idea that water was COOLD! So I only had time to make some very gross measurements with my wife's sewing measuring tape.
The opening from top to bottom is about 26" so no problem there. From the cutlass bearing, along the shaft, about 10.5" to the leading edge of the rudder (take with a grain of salt, these are really gross measurements. I had a windsurfing wet suit trying to float me back up and it was freezing cold).

Kiwiprop calls for 8.25" clearance:
http://www.kiwiprop.us/space-requirement.htm
I am concerned that since the rudder and shaft are not at 90 deg angle the lower blade may be too close when feathered.


I guess some more measuring is in order.
Does anybody know of an F-40 with a feathering or folding prop?

Cheers,

alex

Alex,

By nature of the force of gravity, with a three bladed feathering prop, one blade will stick up and two blades will hang down to port and starboard. If the blades can pass the rudder in the feathered position, there's not much to worry about. If the prop is working, the distance to the rudder is much more critical.

Hmmm! Looking at the picture above, I am not sure there is enough room for a puller for the prop and just barely enough for the prop itself to come out.

Does anybody know if the rudder needs to come off to replace props?

(I know it should be obvious, but all my other boats had fin keels and spade rudders )

Cheers,

alex

I've had our prop off and shaft out without removing the rudder.

George