[C320-list] Folding props
alahlm at comcast.net
alahlm at comcast.net
Fri Jan 20 10:04:50 PST 2006
to all
my stock 3 blade is 15x11 tranny stamped 2.36 oil type 20/30 hd oil cap. 0.35 lts. hull 476 jap engine
al ahlman
-------------- Original message --------------
From: John Van Vessem <jvanvessem at sbcglobal.net>
> My stock 3 blade is 15x9
>
> John (Sojourn645)
>
> Jeff Hare wrote:
> Len,
>
> I think 15x10 is a 3-blade pitch. A two blade prop would be pitched
> more than 10" I think, but I'm not an expert.
>
> -Jeff
>
> -----Original Message-----
> From: C320-List-bounces at catalina320.com
> [mailto:C320-List-bounces at catalina320.com] On Behalf Of belairlk at aim.com
> Sent: Wednesday, January 04, 2006 11:19 AM
> To: C320-List at catalina320.com
> Subject: Re: [C320-list] Folding props
>
> Mike- What size Gori 2-blade are you considering? Gori recommends
> 16-1/6 x 11, but C320 owners report this is too large, suggest 15 x 10.
>
> Len
> Aqua5 #1070
>
> -----Original Message-----
> From: Lachance, Michael B (ISD, IT)
> To: C320-List at catalina320.com
> Sent: Wed, 4 Jan 2006 06:56:27 -0500
> Subject: Re: [C320-list] Folding props
>
>
> Well said. Essentially same the story in eastern Connecticut, esp in
> light air.
>
> Thanks for the feedback so far I'm leaning toward the Gori Mike
> --------------------------
> Sent from my BlackBerry Wireless Handheld (www.BlackBerry.net)
>
>
> -----Original Message-----
> From: C320-List-bounces at catalina320.com
> To: Rod Boer; C320-List
> Sent: Tue Jan 03 22:39:29 2006
> Subject: Re: [C320-list] Folding props
>
> Depends on the PHRF committee, but most likely, YES.
>
> On Lake Michigan, the boat is rated as if it has a folding / feathering
> prop, and you get a credit of 3 sec / mi for a two blade fixed prop, and
> another 3 sec / mi ( a total of 6 sec / mi) for a 3 (or more) blade
> fixed prop. These credits aren't nearly enough to compensate for the
> drag of these props under normal conditions. If the wind is honking,
> you could drag a big bucket behind the boat without affecting your
> speed, but at less than hull speed, the 3 blade prop is a sea anchor
> (especially down wind) while the drag from the 2 blade is much less
> apparent.
>
> It may have been coincidental, but the top three boats in the '02 C-30
> Nationals had 2 blade Martec folding props, the next three boats had two
> blade fixed props, and the last three boats had three blade fixed props.
> Even adjusting the elapsed time for the respective handicaps didn't
> affect the standings in any of the races.
>
> Steve
> Alchemist C-320 #909
> Alchemist C-30T #4764 ('02 National Champ)
>
> --- Rod Boer wrote:
>
> > Mike,
> >
> > Don't they make an adjustment to your rating when you change the prop?
>
> > If they do, you feel that you come out ahead after the change?
> >
> > Rod Boer
> > Odyssey, #688
> >
> > ----- Original Message -----
> > From: "Lachance, Michael B (ISD, IT)"
> > To:
> > Sent: Saturday, December 31, 2005 1:12 PM
> > Subject: Re: [C320-list] Folding props
> >
> >
> > PHRF racing
> > --------------------------
> > Sent from my BlackBerry Wireless Handheld (www.BlackBerry.net)
> >
> >
> > -----Original Message-----
> > From: C320-List-bounces at catalina320.com
> > To: C320-List at catalina320.com
> > Sent: Sat Dec 31 12:47:19 2005
> > Subject: Re: [C320-list] Folding props
> >
> > Why have you decided to changeout your fixed 3-blade for folding
> > prop????
> >
> > Len
> > Aqua5 #1070
> >
> > -----Original Message-----
> > From: Lachance, Michael B (ISD, IT)
> > To: C320-List
> > Sent: Sat, 31 Dec 2005 12:13:37 -0500
> > Subject: [C320-list] Folding props
> >
> >
> > I've decided to replace my fixed 3 blade prop. Given the projected
> > expenditure some research is needed. I plan to review available
> > literature, talk to other sailors and list postings to make an
> > informed choice. The props I will examine include: Autoprop, MaxProp,
> > Gori, and Flex-o-fold.
> >
> > My question: are these four the major candidates or am I missing one?
> >
> > Also, I'm thinking about documenting my research for the website or an
>
> > article for Mainsheet. So if anyone has information they wish to
> > share, anecdotal or otherwise, and at the risk of starting a really
> > long thread (but hey it's snowing outside), please reply to this post.
> >
> > Thanks
> >
> > Mike LaChance
> > Seychelle, #141
> > Noank, CT
> >
> >
> >
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>
> John Van Vessem
> Sojourn 645
> Vallejo Yacht Club
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