Subject: Re: [harryproa] BD sailing
From: "Rudolf vd Brug" <rpvdb@freeler.nl>
Date: 10/8/2009, 7:26 AM
To:
Reply-to:
harryproa@yahoogroups.com.au

 

Hi,
 
The things that changed are :
Distance rudders from centre was 4600MM, now 3800MM. Also they moved sideways 800MM to ww.
Fitted the electric drive with batteries weight max. 120kgs.(probably less)
 
Rudders are smaller but the other setup worked also with blades partially raised.
Also we sailed with only two of us, with the old set up there was no problem sailing with six persons sitting in the cockpit, so well to ww.
 
Thanks Robert, yes I was thinking just that. I am going to try to temporarily fix an old rudder blade in the middle as a dagger board. I think the bow down attitude of the boat with full sail up might be the cause.
 
regards,
Rudolf
 
 
----- Original Message -----
From: Rob Denney
To: harryproa@yahoogroups.com.au
Sent: Thursday, October 08, 2009 11:08 AM
Subject: Re: [harryproa] BD sailing

 

G'day,

Very disappointing.  Could you make a list of the things that have changed, please, so we can try to figure out the problem.  eg, sails, rudder location, rudder size, weight in ww hull, differences in water drag, etc etc.

Ta.

regards,

Rob

On Thu, Oct 8, 2009 at 3:14 PM, Rudolf vd Brug <rpvdb@freeler.nl> wrote:
 

Hi,
 
Yesterday we have been out sailing BD with the new rudder set up.
Wind about 16 knts.  After hoisting the sails we pulled the sheet and the boat luffed.
Pulled the other sheet to get the right bow pointing downwind and sheeted in again, the boat luffed.
After a few attempts I descided to take the jib down, and we got her going.
Rudder angle was about 10 deg. so no high speeds.We tried shunting and we had to get BD going really downwind to be able to build up enough speed to keep her from luffing straight into the wind.
After some time we set the jib while sailing on a close reach. Once the jib started pulling the boat luffed into the wind the rudder only putting the brakes on.
We took the jib down and proceeded without it. The front rudder has to be pulled up at least half way to keep the rudder angle 'down' to the 10 degres I mentioned. Front rudder all the way down makes it hard to keep the boat from luffing into the wind.
We also tried the front rudder tilted out of the water entirely which made made for very nervous steering behaviour.
Returning to the marina we were very disapointed.
 
As we brought BD to the marina after the launch we had to negotiate some bridges and a lock all less than
1 metre wider than the boat. I noticed that steering was less precise compared to the old set up. Reaction is slower and seems more abrupt, probably because the late reaction causes one to turn the rudder further than usual.
Reactions please,
Regards,
 
Rudolf

__._,_.___
Recent Activity
Visit Your Group
Yahoo!7 360°

Start a blog

Public or private-

it's your choice.

Y!7 Toolbar

Get it Free!

easy 1-click access

to your groups.

Yahoo!7 Groups

Start a group

in 3 easy steps.

Connect with others.

.

__,_._,___