Subject: [harryproa] Re: MODERN NAMES of things/ Rudders
From: "Robert" <cateran1949@yahoo.co.uk>
Date: 7/11/2009, 7:34 AM
To: harryproa@yahoogroups.com.au
Reply-to:
harryproa@yahoogroups.com.au



-Under those conditions there shouldn't be a problem. The problems on the original supports were sorted out pretty easily with an extra diagonal strut. The fuse system worked very well but make sure you have some spare fuses on hand or you may be tempted to replace it with something else that doesn't give.

-- In harryproa@yahoogroups.com.au, George Kuck <chesapeake410@...> wrote:
>
> Hello,
>  
> I do not think the balance would be a problem as the rudder would be most or all of way down when sailing and I would only be pulling it to a minimum for steerage when motoring up creek to slip in less than 2' of water (mud bottom) at low speed.  I do like having the rudder on the LW hull as in the original BD rudders, I just think it is more aesthetically better looking and gets the bearing further down for better support. 
>  
> I understand there was a problem with original rudders on BD but can that system work OK on the smaller 12 M Harryproa as it was used on Bain's Arora ? Can a kick up casset/daggerboard rudder be used so if it does kick up, it is a simple matter to reset it ? Would either a releasable hold down or elastic cord hold down be better than a "fuse" type pin that would be more difficult to replace in a hurry and may get jammed ?
>  
> Happy sailing
> George Kuck
> Chestertown, Md.
>  
> PS
> Any news on Arora's where abouts ?  I hope he didn't get stranded somewhere.
>
> --- On Fri, 7/10/09, Robert <cateran1949@...> wrote:
>
>
> From: Robert <cateran1949@...>
> Subject: [harryproa] Re: MODERN NAMES of things/ Rudders
> To: harryproa@yahoogroups.com.au
> Date: Friday, July 10, 2009, 8:07 AM
>
>
>
>
>
>
>
>
> HI George ,
> I have studied Rare Birds and Aroha's rudders in a lot of detail. (I even helped with the fairing of Aroha's rudders) and much as I think they satisfy the requirements, as mentioned by Rudolf, they have balance problems if only partly down. It is possible to get round this with a curved blade but not easy and I have other considerations due to the flare on the inside of the hull I wish to incorporate. I was also considering sliding the rudder in side a barrel to allow further retraction but the bearings are more expensive to get right. Torlon balls and careful bearing surfaces are required with the larger diameter. The kick up system could still be based on a fuse. Money aside this could be a system that works well. --- In harryproa@yahoogrou ps.com.au, George Kuck <chesapeake410@ ...> wrote:
> >
> > Hello Robert ,
> > I think it should be possible to have a daggerboard rudder that can kick up.  It would work on a ruder that can rotate 270 degrees but would be a problem on 360 degree rudders.  All that is needed is a kick up dagger board case.  This is what is used on the F32. Take a look at the F32 rudder upgrade plans.
> >  http://www.f- boatmart. com/home. php?cat=255
> >  
> > I think the original rudder on Blind Date is a dagger board type but I do not know if it can kick up.  What ever happened with the new rudder for Blind date ?  It should be possible to make a kick up case that the dagger board can go through.  That would allow you to raise dagger rudder part way up for shallow water and it can still kick up.
> >  
> > Rob, what type of rudder is on the current 12 M Harryproa plans, Is it a dagger board rudder ?
> >  
> > Happy sailing,
> > George Kuck
> > Chestertown,  Md.   
> >  
> >  
> >  
> > --- On Thu, 7/9/09, Robert <cateran1949@ ...> wrote:
> >
> >
> > From: Robert <cateran1949@ ...>
> > Subject: [harryproa] Re: MODERN NAMES of things
> > To: harryproa@yahoogrou ps.com.au
> > Date: Thursday, July 9, 2009, 7:33 AM
> >
> >
> >
> >
> >
> >
> >
> >
> > Sounds like you've got the winter blues. You certainly have got stuck into the rebuilding but can imagine it can seem interminable at times. I am pretty impressed at the rate of progress.
> > There is a plant biology paper on Hypolithic Cyanobacteria in the Tanami Desert ticking away (green slime that grows under rocks living on the light that manages to get through the quartz) but mainly I am organising some house plans for moving back down to Eden. It is to be a mud brick house in the town so it may cause a bit of a stir, but should be reasonably cheap and very energy efficient. I was hoping the admiral was going to retire next March so I could get back to being a beach bum again but she was give a promotion and decided to hang in for another year or so. She is in the same line of business as Rob's wife. We plan to visit Rob when he moves up to Qld and get some sailing in.
> > I have not changed what I want in a Harry for a while now, but am still not sure what what to go for in the rudders. It's is easy to have kick up or retracting but difficult to get both. I have played around with telescopic rudders and a shaft that moves up a little way. I have looked at rudders that kick up by pivoting on the shaft and by the shaft letting go at the bearings.I am tending to go for the shaft letting go at the bearings and allowing a small amount of retraction and maybe a sacrificial tip. - In harryproa@yahoogrou ps.com.au, Doug Haines <doha720@ > wrote:
> > >
> > > hi robert
> > >  
> > >
> >
> >
> >
> > Recent Activity
> >
> >
> >  5
> > New PhotosVisit 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.
> > .
> >
>

__._,_.___
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.

.

__,_._,___