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converting a fixed rudder blade

Printed From: Yachts and Yachting Online
Category: General
Forum Name: Repair & maintenance
Forum Discription: Questions & tips on the subject
URL: http://www.yachtsandyachting.com/forum/forum_posts.asp?TID=4131
Printed Date: 14 May 25 at 4:04am
Software Version: Web Wiz Forums 9.665y - http://www.webwizforums.com


Topic: converting a fixed rudder blade
Posted By: mike ellis
Subject: converting a fixed rudder blade
Date Posted: 06 Apr 08 at 4:23pm
i have sourced a fixed rudder blade for the international 14 that a few freinds and myself have bought. however a fixed blade is not ideal were i sail, shallow with shingle banks and a difficult harbour to get into/out of. because of this i want to turn the blade into either a swinging one or a dagger blade like a musto. do you have any advice on which will be easiest and how i should go about about converting it? i will put some pics up of the blade tommorow if those will help.

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600 732, will call it Sticks and Stones when i get round to it.
Also International 14, 1318



Replies:
Posted By: JimC
Date Posted: 06 Apr 08 at 4:52pm
A Dagger blade is usually better. If a pivoting blade comes up a bit at 14 speed something will break. However it needs to be the same section for about 75% of the blade length, otherwise a dagger stock won't work. For how-to on a dagger stock see here... http://www.sailingsource.com/cherub/rudstock.htm - http://www.sailingsource.com/cherub/rudstock.htm


Posted By: Lukepiewalker
Date Posted: 06 Apr 08 at 4:54pm
My Finn rudder looks like it has been converted from a fixed one. It looks like appropriate cutting to separate the blade and head, then a couple of carbon/foam (I think there's a foam core) cheeks are attached to either side of the head. I think the critical part is the shaping of the top of the blade and the 'head' section.

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Ex-Finn GBR533 "Pie Hard"
Ex-National 12 3253 "Seawitch"
Ex-National 12 2961 "Curved Air"
Ex-Mirror 59096 "Voodoo Chile"


Posted By: mike ellis
Date Posted: 06 Apr 08 at 5:17pm
thanks for the link jim, im having a read through that at the moment, ill PM you if i dont understand any of it.

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600 732, will call it Sticks and Stones when i get round to it.
Also International 14, 1318


Posted By: mike ellis
Date Posted: 06 Apr 08 at 6:31pm

the top part of the rudder blade is rectangular in section so i think im going to have to make a swinging case. Any tips on this?



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600 732, will call it Sticks and Stones when i get round to it.
Also International 14, 1318


Posted By: olly_love
Date Posted: 06 Apr 08 at 6:59pm
get an old one off somthing else then round the top of the blade an then drill the hole in the right bit

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TWO FRANK-Hunter Impala




Posted By: stuarthop
Date Posted: 06 Apr 08 at 8:13pm
if your going to have a lfiting rudderblade use a pin to hold it down or its likely to lift

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Posted By: Merlinboy
Date Posted: 06 Apr 08 at 8:41pm

Same as Oly,

Get an old ruddr stock that fits on the pintles of the 14, then draw round the top of the lifting blade on your fixed blade then just simply cut it out, make sure you drill the hole in the right place (USE SAME PRINCIPLE AS ABOVE)  thats it really! I wouldn't  make a dagger board style rudder, i tried recently and it was more work then its worth in the end i just made a pivoting stock!



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Posted By: MRJP BUZZ 585
Date Posted: 06 Apr 08 at 8:53pm
Originally posted by Merlinboy

I would make a dagger board style rudder, i tried recently and it was more work then its worth



Is it just me or is that not saying do this even though its not worth it?


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Josh Preater

http://www.bu22.co.uk">BUZZING IS FUN



Posted By: Merlinboy
Date Posted: 06 Apr 08 at 10:02pm
Is that better Josh???

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Posted By: JimC
Date Posted: 06 Apr 08 at 10:24pm
Originally posted by Merlinboy

i tried recently and it was more work then its worth in the end i just made a pivoting stock!


[FX smiles gently to self, reflects on experience]


Posted By: MRJP BUZZ 585
Date Posted: 06 Apr 08 at 10:36pm
Originally posted by Merlinboy

Is that better Josh???


Yep, at least i now know i wasn't going mad


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Josh Preater

http://www.bu22.co.uk">BUZZING IS FUN



Posted By: Merlinboy
Date Posted: 07 Apr 08 at 8:35am

Originally posted by JimC

Originally posted by Merlinboy

i tried recently and it was more work then its worth in the end i just made a pivoting stock!


[FX smiles gently to self, reflects on experience]

 

I dont understand what that means Jim?? My normal pivoting stock didnt do to bad at the canoe open this weekend winning it over all!! (i wasnt helming)



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Posted By: JimC
Date Posted: 07 Apr 08 at 8:30pm
pm sent but not delivered...


Posted By: Merlinboy
Date Posted: 07 Apr 08 at 10:02pm
I have deleted some stuff now Jim PM away

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