[C320-list] Reversing can be easier

[Kirk McCullough]

We get the most benefit from the feathering Kiwiprop in lighter air.... say 
under 10kts. At 20 kts there is little difference as far as I can tell. I 
started winning some Saturday morning races once we got the Kiwi. Love 
pis..ng off my dock buddies who have stayed with fixed props.


----- Original Message ----- 
From: <Orlando.Duran at AveryDennison.com>
To: "C320-List" <C320-List at Catalina320.com>
Sent: Wednesday, June 25, 2008 10:39 AM
Subject: Re: [C320-list] Reversing can be easier



A lot...
----------------------------------
Regards,
OD

Sent from my BlackBerry Wireless Handheld


----- Original Message -----
From: Len [aqua5len at gmail.com]
Sent: 06/25/2008 10:36 AM
To: C320-List at catalina320.com
Subject: Re: [C320-list] Reversing can be easier

Exactly how much increase (over 3-blade fixed) in "speed under sail" do you
get with folding/feathering prop in, say, 10 to 12 knot wind on 60 degree
reach or beam reach?

Len
AQUA5   #1070

On Wed, Jun 25, 2008 at 7:44 AM, <Orlando.Duran at averydennison.com> wrote:

> I never had any issues with the 3-bladed prop relative to performance or
> 'prop-walk'--it always worked extremely well.
>
> I just hated the fact that I had to give up 1kn+ under sail to get that
> performance...it is a sailboat after all...
>
> Admittedly, in So Cal we never have to worry about currents, cross-winds 
> in
> the marina (all slips are oriented upwind and downwind), winterizing :), 
> etc
>
> I just didn't see the benefit of the prop vs losing speed under sail.
>
> On my 440 I installed a 3-bladed Flex-o-Fold prop and love it...although
> not self-pitching in reverse, it works great and of course, under sail, no
> performance problems
> ----------------------------------
> Regards,
> OD
>
> Sent from my BlackBerry Wireless Handheld
>
>
> ----- Original Message -----
> From:  [crashley at gte.net]
> Sent: 06/25/2008 07:36 AM
> To: <C320-List at Catalina320.com>
> Subject: Re: [C320-list] Reversing can be easier
>
> Orlando,
>
> That's odd. I found that stopping (and reversing) was a chore with the
> factory 3 blade fixed prop and was much better with the Autostream
> feathering prop I installed a couple years ago. It has independently
> adjustable fwd and rev pitch, although I've never had to change the 
> settings
> that it came with.
>
> CRA
> Rosebud #882
>
>
> ----- Original Message ----- From: <Orlando.Duran at AveryDennison.com>
> To: "C320-List" <C320-List at Catalina320.com>
> Sent: Wednesday, June 18, 2008 8:44 PM
> Subject: Re: [C320-list] Reversing can be easier
>
>
> Of course you knew I had to chime in on this... :)
>
> When I bought cl 3 #112 it came with the 3-bladed  prop--lots of prop
> walk--ALL props, no matter what, have prop walk, fluid dynamics and all--
>  but I learned that that's not bad thing at all, I used it lots of times 
> to
> get out of slips without a lot of room, etc. Once you understand the 
> amount
> of 'walk' your prop has, you learn to use it and not complain about. In
> reverse, when going forward, it was like having power brakes, it would 
> stop
> the boat RIGHT NOW...
>
> 3 years later, I purchased (from this list by the way) a Martec 2-blade
> folding prop, less prop walk--again not always a good thing--and it took a
> bit of getting used to not having as much stopping power in reverse.
>
> My point in this is that you simply need to get used to your particular
> prop and take advantage of it's advantages and disadvantages...
>
> Oh yeah, dumping that 3-bladed prop was the best thing ever for boat speed
> under sail, getting rid of that 3-bladed anchor..er, prop, made that boat
> competitive....
> ----------------------------------
> Regards,
> OD
>
> Sent from my BlackBerry Wireless Handheld
>
>
> ----- Original Message -----
> From: "Chris Burti" [clburti at gmail.com]
> Sent: 06/18/2008 08:12 PM
> To: C320-List at catalina320.com
> Subject: Re: [C320-list] Reversing can be easier
>
> I respectfully disagree that 320's exhibit significant prop walk with a
> factory prop. I attribute most of the backing problems that I've observed
> to
> poor technique. I've been backing our 320 into slips everywhere we go in
> all
> wind conditions for five years with little or no problems. We have a
> factory
> three bladed prop that works fine as long as I don't let the barnacles get
> growing on it. Our approach fairway is less than 60' wide and that is
> adequate to get control in reverse. the only time I see any evidence of
> significant swinging of the stern from the prop is if the water is thin 
> the
> keel is dragging and I 'm fighting a cross wind.
>
> Seriously, if you want to experience prop walk at its worst, get out on a
> full keel sailboat with the prop in the rudder aperture or try backing a
> single screw inboard ski boat. After that experience I suspect that you'll
> never complain bout a fin keel boat again.
>
> On Wed, Jun 18, 2008 at 6:29 PM, Bruce Stanley <brucestanley36 at gmail.com>
> wrote:
>
>  Robert Seastream writes about poor Reversing.
>> My circumstances mean that I must reverse into a tight marine pen (slip).
>> The Kiwi Feathering Prop really does deliver positive and immediate
>> thrust,
>> with little or no Prop walk.
>> I am sure there are other props that do this too, but not a factory 
>> fitted
>> fixed 3 blader.
>> Cheers
>> Bruce Stanley
>> Sydney
>>
>>
>> -----Original Message-----
>> On Wed, Jun 18, 2008 at 10:39 PM, Robert Seastream <
>> robert.seastream at comcast.net> wrote:
>>
>> > Backing at all (let alone straight) is something I simply can't get my
>> boat
>> > to do, so I don't rely on it as part of the docking process.
>> > I've told my wife that when docking, if we miss we'll simply circle and
>> try
>> > again, since we have little/no effective reverse/braking power.
>> >
>> > Bob
>> >
>> >
>>
>>
>
>
> --
> Chris Burti
> Farmville, NC
>
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