Hi everyone, I'm sailing 2039 in Co. Cavan in Ireland and am still being haunted by losing the rudder in late 2006. I got one made by a local chap here but when the boat heels on a close haul the rudder loses purchase and she noses up wind. Does anyone know is there any specific ratio for the rubber depth eg. boat length: rudder depth, sail size: rudder depth etc. Any help would be greatly appreciated. |
Irish European Champs next year ... great plan or wot?!! |
Sail her flat, less centreboard and you'll have less lee helm. Flat is fast and boat speed makes you a tactical genius as someone said. Merlins do screw up quickly to windward if they heel. |
I think you meam less weather helm. |
Less weather helm is fine, but even with the centre board up 50% you get a strong gust, boat heels, rudder loses purchase and I'm drinking lake water, not nice!! I don' want to make too long a rudder and clip every low lying rock in the lakes I sail. Ans it'll reduce the speed. What length are your rudders folks? |
I did mean weather helm - stupid me. |
I had exactly the same problem with the original rudder in 1620. With nothing to guide me by out here in the wilderness I made my own, and after a few tries have a shape that never gives trouble. If you post your e-mail address I'll send you the outline. |
This may help:- |
My Jon Turner fixed rudder is also about a metre long from bottom pintle. It has been known to stall out but only in extreme conditions, see the link. Profile is very similar to the current Winder but without anything fancy on the tip. http://www.merlinrocket.co.uk/gallery/view_photo.asp?folder=gallery/open_meetings/salcombe/2006&file=salcombeopen2006_mills.jpg |
Rory, |
I had an uncontrolable rudder on 3542 when I first put in on the water, I tried different merlin rudders with no sucesss. In the end a out of class fireball rudder gave me total control back, it was the same basic shape as the origional, but it was 27mm thick in the centre of the curve where the origonal was only 22mm, I think it just had more presence in the water due to the extra thickness. |