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Forums28
Topics4,053
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May 14th, 2026
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Joined: Sep 2007
Posts: 42
Senior Member
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Senior Member
Joined: Sep 2007
Posts: 42 |
Anyone had any experience rebuilding their J/30 rudder?
I wouldn't mind knowing the anatomy of the rudder before I start ripping it apart.
Thanks
Jason Penney
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Joined: May 2007
Posts: 2,685 Likes: 1
Past J/30 Class President
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Past J/30 Class President
Joined: May 2007
Posts: 2,685 Likes: 1 |
John McArthur (Smiles) had a new rudder fabricated and brought it to the Annapolis NAs for the Board of Governors to inspect. Physically, it looks identical to the stock J/30 Class rudder since it was built from templates. It is lighter though. There is an action for a Naval Architect to analyze the impact of rudder weight and determine if there should be a specification before approving the replacement rudder as an alternate source to one fabricated by TPI. Hope this helps!
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Joined: Sep 2007
Posts: 42
Senior Member
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Senior Member
Joined: Sep 2007
Posts: 42 |
I've decided to rebuild the rudder today.
I've posted my progress on the sailrattleandhum.blogspot.com.
Jason Penney
Rattle and Hum, #124
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Joined: May 2007
Posts: 2,685 Likes: 1
Past J/30 Class President
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Past J/30 Class President
Joined: May 2007
Posts: 2,685 Likes: 1 |
John McArthur (Smiles) copied me on an email to Jason with pictures of the broken rudder, allowing the core and construction to be seen. I've posted the information with pictures below for all to see. Jason, Here's some pictures of a "Failed" J30 rudder from IdaSailor. IdaSailor made as rudder for me last year. Most of the J30 rudders I have checked out are in the 70 to 80 pound range "Wet". IdaSailor's rudder I purchase was 40#. Bill, I talked with Joel at Ida Sailor and he thinks it would be easy to make the new rudder weigh around 55-65#. John McArthur ----- Hi John, sorry for the delay, had to dig the rudder pieces out from under a pile of other broken blades. Weight for both pieces is 53 lbs. Thanks for business and your patience. I look forward to hearing the results of your class measurer and your experience with the rudder under sail. fair winds, -Joel Joel Santarone General Manager IdaSailor Marine Inc. www.idasailor.com 866-400-2204 toll free 208-375-2204 shop sailboats@idasailor.com ![[Linked Image from j30.us]](http://www.j30.us/images/j30brokenrudder1.JPG) ![[Linked Image from j30.us]](http://www.j30.us/images/j30broken%20rudder.jpg) ![[Linked Image from j30.us]](http://www.j30.us/images/j30broken%20rudder2.JPG) [This message has been edited by Rhapsody #348 (edited 02-03-2008).]
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Joined: May 2007
Posts: 2,685 Likes: 1
Past J/30 Class President
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Past J/30 Class President
Joined: May 2007
Posts: 2,685 Likes: 1 |
Jason,
I just looked at the pictures on the blog from 2 Feb. I assume the next steps are to chisel out the old balsa, then cut new core in the shape of the section that was taken out. Is your plan to lay in new core with the "V" grooves up against the contour of the glass remaining in the rudder, then grind to match the contour on the open side? How many core pieces (e.g. what approx size) do you think will make up the new core? Nice documentation you've got on your blog. Keep up the good work & Good Luck!
Bill
[This message has been edited by Rhapsody #348 (edited 02-03-2008).]
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Joined: Sep 2007
Posts: 42
Senior Member
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Senior Member
Joined: Sep 2007
Posts: 42 |
I cleaned the balsa and ground down the rough edges on the glass...so I'm ready to start rebuilding.
A couple notes worth mentioning after looking at the broken rudder:
1) The rudder has a foam core (i think) that is shaped, then has balsa wood wrapped around this "shape". The balsa wood is uniformally 2 sizes:
a) 1/4 inch balsa between 3.25 and 5.25 inches from the trailing edge (it's not shaped and is uniformally the same thickness).
b) 1/2 inch balsa 5.25 inches from the trailing edge to the leading edge (it as well is not shaped and is uniformally the same thickness).
2) The balsa wood was so rotten that using the claw on a hammer I could just pull the balsa off...no chissel was required this time.
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Joined: Sep 2007
Posts: 42
Senior Member
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Senior Member
Joined: Sep 2007
Posts: 42 |
Oh...and another note...my rudder weighed 85 pounds before I split it....and my garbage can is REALLY heavy with rotten balsa....it will be interesting to see what it will weigh when I'm done. Other than layering solid glass where the hardware attaches I don't plan on doing anything special.
Jason Penney
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Joined: Sep 2007
Posts: 42
Senior Member
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Senior Member
Joined: Sep 2007
Posts: 42 |
OK I need a favour (Canadian spelling);
Someone out there must have the rudder and keel templates drawn to scale in CAD or something. If so could I get a copy Emailed to me?
Thanks
Jason Penney
Rattle and Hum, #124
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Joined: Mar 2005
Posts: 111
Senior Member
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Senior Member
Joined: Mar 2005
Posts: 111 |
Someone out there must have the rudder and keel templates drawn to scale in CAD or something. If so could I get a copy Emailed to me?
I found this doing a search in our database; " I have the keel templates avaiable on my cad package at work. e-mail a note with a u.p.s. shipping address and I will be glad to plot off a full size set that can be transfered to foam or wood. Harley HNETHKEN@prodigy.net" The fleet directory shows Harley Nethken; 222 Land Shark 30085 Harley Nethken harley@tech-con.net . You might shoot him an email. AC s/v Rauzer II #448 [This message has been edited by alcal1750 (edited 02-12-2008).]
AC
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Joined: Sep 2007
Posts: 42
Senior Member
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Senior Member
Joined: Sep 2007
Posts: 42 |
Harley Emailed me with the CAD drawings to scale.
Thanks Harley
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