Sounds like an increase in apparent wind but could be a number of contributing factors including small reduction in wetted surface area drag. You may also be out of balance at slower speeds so as the speed picks up the boat becomes more balanced so the rudders cause less drag.

 

I remember when sailing the first two Elementarrys they would sail along at a certain speed until I applied a bit of front rudder. It would then take of like a turbocharger. I think the front rudder was balancing the boat so reducing induced drag on the back rudder.

 

I was sailing Bain's Harry the other day and found by unlinking the two steering systems I could balance the boat with the front rudder, reducing the weather helm. I think Rudolf is finding the same with Blind Date. All a bit inconclusive as Rob seems to be happy with his single rudder. Interestingly a friend of mine is developing a 29ft sport racing mono. It has a canting keel and has been a major disappointment as they can't beat the last version with a standard keel. A couple of weeks ago they stuck a canard on and now it goes like a rocket.

 

Centre of Effort and Centre of Lateral Resistance balance is a curly one on Harryproas as we have the two daggerboards acting as rudders which changes a bit of conventional thinking on the subject. To really confuse the issue see my next post.

 

Mark

 

...................................

Mark Stephens

www.harryproa.com

-----Original Message-----
From: harryproa@yahoogroups.com.au [mailto:harryproa@yahoogroups.com.au] On Behalf Of Doug Haines
Sent: Sunday, 29 April 2007 10:55 AM
To: harryproa@yahoogroups.com.au
Subject: Re: [harryproa] Fun

Hi,

Well, fun's over now. Back on Swan River, about to head into public boat yard.

Was noticing yesterday a definite change at a relatively small wind increase, the boat took off over the top of the waves at much higher speed. Wind went from say 8 knots to 12knots, boat speed went from say 4-5 knots to about 8-10 knots.
The feeling makes me think that this was the transition into being up on the plane. 30-40' monohull behind me nearly keeping up untill this wind came, and it sucddenly got much further back. Other multihullers confirm this experience please.

The 3 week voyage was quite tough on myself. The weather was a lot of onshore winds which meant wet ride, if properly clothed it would have not been unpleasant, but I had normal type jumpers and tracky pants so got pretty cold.
I gave the boat  afair workout, and was especially pleased that my own mast and rudders handled everything OK.

I am thinking of a longtrip late r in the year. I am planning for warm/hot weather and tail winds so as to be comfortable enough for a longer period of time.
Extra storage and sun/rain shelter, plus gear like cooker will improve living.
Sailing really doesn't need much changed except more sail area and reefing set up properly. Plus outboard, very useful.

ROb - sailing on river?

Doug

David Howie <dana-tenacity@usa.net> wrote:

Well Done, I'm jealous, how about some photos?

------ Original Message ------
Received: Mon, 23 Apr 2007 01:05:27 AM MDT
From: Doug Haines <doha720@yahoo.co.uk>
To: harryproa@yahoogroups.com.au
Subject: Re: [harryproa] Fun

Hi all,

At Lancelin now. Very tiring sail up. Held full sail all day from Rottnest.
Sea really too big for this size boat, without getting plenty onboard. Made it
in good time though.

The bike did fit after stowing gear under bunk, and taking wheels off.

Doug

David Howie <dana-tenacity@usa.net> wrote:

Folding bike?? Met a cruiser who used to buy old mountain bikes at garage
sales, cut them in half vertically for stowing, then reassemble with a piece
of tubing as a sleeve and some wingnuts when he got to port.

------ Original Message ------
Received:
From: "Rob Denney" <proa@....au>
To: <harryproa@yahoogroups.com.au>
Subject: Re: [harryproa] Fun

Jeez, how could I have possibly neglected to make the cabin big enough to fit
a bike in?

Enjoy the sail to Lancelin, hope you clean up the competition.

regards,

Rob
----- Original Message -----
From: Doug Haines
To: harryproa@yahoogroups.com.au
Sent: Wednesday, April 18, 2007 5:11 PM
Subject: [harryproa] Fun

G'Day,

Good run back to Mandurah.
Trying for Lancelin for boggie boarding comp on Sunday.
Try to work out some storage /living arrangements. Might leave the bike
behind this time - let a fair bit of water in through the ajar hatch, thus
enjoying wet blankets at night. The bike can fit with wheels removered, but
its just awkward stowing. Should fit nicely into a harry double berth space.
That's the only negative thing to say on Elementarry, is where to put the
bike.
Doug

Rob Denney <proa@....au> wrote:

G'day,
Congratulations, you have now done more offshore /coastal miles in a
harryproa than anyone else! 250 kms Perth to Dunsborough. Very impressive.

Could we have some more details on weather, sea state, speed, handling
etc, please.

Regards,

Rob
----- Original Message -----
From: Doug Haines
To: harryproa@yahoogroups.com.au
Sent: Sunday, April 15, 2007 9:45 AM
Subject: [harryproa] Deep far south

Hi,

Made it down to dunsboruogh via Bunbury in Sidecar. Boat relly good, fun
untill big chops oand head winds, but still handles well.

Doug

.

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