Tuesday, December 15, 2009

[Electric Boats] Re: Pitch of Kipawa Propeller

 

Interesting that corporations have trained some so well that they don't automatically reject a company that won't give them the info they need to make an informed decision. Any company that acts like this doesn't deserve my money. Thank you for the heads up. I'll add them to the growing list of mostly Duhmerican't companies I won't do business with.

--- In electricboats@yahoogroups.com, "marka97203" <marka97203@...> wrote:
>
>
> I've got a Kipawa 314 they sent for an E-30. It's 10" diameter. From
> root to tip is 2.5 inches. The blades are not twisted very strongly.
>
> Does that make pitch the sum of the three blades, or 7.5?
>
>
> For my own 650 pound all up 16 footer, the Kipawa prop did make a modest speed
> improvement - but nothing like the 30% better range Denny Wolfe reports.
> For that I had to add another battery.
>
> Mark
>
>
>
> On 12/14/09, gregory_west2001 <greg@...> wrote:
> > Does anyone
> > know the pitch of the Kipawa props? If so, and assuming Kipara did not have
> > you sign a nondisclosure agreement as a condition of the purchase, would you
> > let me know the pitch? Thank you.
> ;
> >
> > "If your just looking for speed our props on average show a 10 - 15%
> > increase of speed over the standard Minn Kota Propeller."
> >
>

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[Electric Boats] Re: Electric Catamaran

 

Hi Chris

I just read on another forum that Bryan with School's out has had some problems with his torqeedos and their controllers. Have you heard anything about it, since you are also located in Australia? Do you know if the problem is solved and what caused it? I think he also had e-pods before he converted to torqeedo...

greetings from the dark north

Matti

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[Electric Boats] Re: Electric Catamaran

 

Hi Chris

I just read on another forum that Bryan with School's out has had some problems with his torqeedos and their controllers. Have you heard anything about it, since you are also located in Australia? Do you know if the problem is solved and what caused it? I think he also had e-pods before he converted to torqeedo...

greetings from the dark north

Matti

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RE: [Electric Boats] Pitch of Kipawa Propeller

 
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Posted by at No comments:

Re: [Electric Boats] Pitch of Kipawa Propeller

 


I've got a Kipawa 314 they sent for an E-30. It's 10" diameter. From
root to tip is 2.5 inches. The blades are not twisted very strongly.

Does that make pitch the sum of the three blades, or 7.5?

For my own 650 pound all up 16 footer, the Kipawa prop did make a modest speed
improvement - but nothing like the 30% better range Denny Wolfe reports.
For that I had to add another battery.

Mark

On 12/14/09, gregory_west2001 <greg@gkwpa.com> wrote:
> Does anyone
> know the pitch of the Kipawa props? If so, and assuming Kipara did not have
> you sign a nondisclosure agreement as a condition of the purchase, would you
> let me know the pitch? Thank you.
;
>
> "If your just looking for speed our props on average show a 10 - 15%
> increase of speed over the standard Minn Kota Propeller."
>

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.

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Posted by at No comments:

Monday, December 14, 2009

Re: [Electric Boats] Pitch of Kipawa Propeller

 

There is another better and much cheaper way if you do not need the weedless aspect of the Kipawa or OEM props. 
 
Use an APC model airplane prop.  They come in dozens of different sizes and cost about $3.00 each.  You can buy lots of sizes to try - with an ammeter and a gps you can measure the efficiency of each one.  I get mine from Tower Hobbies.
 
I got a 30% increase in range using a 10x6 prop on a MK Endura 36 driving a 14' canoe.  I got an even better increase by making an NACA 0025 fairing for the 1 1/8" dia shaft.
 
The APC props just need to be drilled out to 3/8" and a notch for the MK shear pin milled with a Dremel tool.  Pretty easy to do.
 
Lots of details here:
 
Denny Wolfe
 
----- Original Message -----
From: Bill Gow
Sent: Monday, December 14, 2009 8:27 PM
Subject: RE: [Electric Boats] Pitch of Kipawa Propeller

 


From: gregory_west2001

I had a bizarre exchange with the Kipawa propeller customer service number
today. I emailed the customer service yesterday to ask the diameter and
pitch of a Kipawa prop for a MK Endura 30/34 and received a response email
today with the diameter, which apparently is not a secret, and the statement
"We do not give out the pitch of the Kipawa Propeller."

When I called and asked them why in the world they would not tell me the
pitch on the prop, since it is what it is and since it is not a trade
secret, I was told that I could order one and measure it and return it if I
wanted but they would not give it out.

I am in still interested in knowing the pitch of the prop (without ordering,
measuring and returning one if it has a pitch I don't want). I have
variously seen the pitch online as being listed as 6" or 9". Does anyone
know the pitch of the Kipawa props? If so, and assuming Kipara did not have
you sign a nondisclosure agreement as a condition of the purchase, would you
let me know the pitch? Thank you.

[Bill Gow] Perfect timing! I just got a reply from them a couple minutes
before you posted this. I'm looking at props for the Minn Kota and
Motorguide electric motors as well. I'm wondering if one can use the bigger
motors with bigger after market props. This is what I got back;

"If your just looking for speed our props on average show a 10 - 15%
increase of speed over the standard Minn Kota Propeller."

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.

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Posted by at No comments:

RE: [Electric Boats] Pitch of Kipawa Propeller

 


From: gregory_west2001

I had a bizarre exchange with the Kipawa propeller customer service number
today. I emailed the customer service yesterday to ask the diameter and
pitch of a Kipawa prop for a MK Endura 30/34 and received a response email
today with the diameter, which apparently is not a secret, and the statement
"We do not give out the pitch of the Kipawa Propeller."

When I called and asked them why in the world they would not tell me the
pitch on the prop, since it is what it is and since it is not a trade
secret, I was told that I could order one and measure it and return it if I
wanted but they would not give it out.

I am in still interested in knowing the pitch of the prop (without ordering,
measuring and returning one if it has a pitch I don't want). I have
variously seen the pitch online as being listed as 6" or 9". Does anyone
know the pitch of the Kipawa props? If so, and assuming Kipara did not have
you sign a nondisclosure agreement as a condition of the purchase, would you
let me know the pitch? Thank you.

[Bill Gow] Perfect timing! I just got a reply from them a couple minutes
before you posted this. I'm looking at props for the Minn Kota and
Motorguide electric motors as well. I'm wondering if one can use the bigger
motors with bigger after market props. This is what I got back;

"If your just looking for speed our props on average show a 10 - 15%
increase of speed over the standard Minn Kota Propeller."

__._,_.___
.

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