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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.
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@... 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 > >
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...
OK george? what's up with the boats, you could try out rudders on the small one couldn't you. The small proa in the barn with the flat bottom i think it was in...
Hi, BD had the kick up dagger rudders. To be able to steer them you need balance. The old BD rudders worked, but only when fully down (2 m draught) The balance...
This is pretty well what I have come down to. I would probably have gone with the older cassette rudders as most of the time I would be sailing in plenty of...
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...
-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...
One interesting design I've seen is the kickup system for the Dragonfly 35. The line holding the centerboard in place is routed up on deck and then through a...
The problem with RB's rudders was easily fixed with a diagonal strut. They worked well on the way to Gladstone, until the pintle sheered. The owner and I have...
Crowther tried barrell rudders on some designs (Southern Ocean 50 if memory serves me right). They claimed so much friction that steering got too heavy. It is...
Hi, This rudder works when all the way down. On BD I wasn't too keen on trying to test the kick up feature. These blades are very large even if they weigh only...
Daggerboard rudders which kick up are fine so long as everything is braced all the way up. The board kicking out the back of the case is an awful solution as...
Hell Rob, The example I was referring to was the second item down, where the blade is in a case that can kick up with no damage to the case and could also be...
That is the type of solution required, but the pivot pin would need to be a serious bit of well supported gear if it is going to work in a decent broach in the...
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