Cruisers Forum

  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
Thread Tools Search this Thread Rate Thread Display Modes
Old 12-10-2016, 06:58   #1
Registered User

Join Date: Jun 2016
Location: Sawtooth City, Idaho
Boat: Irwin 52 Ketch
Posts: 2
Irwin 52 / 54 Centerboard Repair - Help!

Undergoing repair of centerboard bushing on Irwin 52. The bushing was essentially gone and I'm guessing this is the precursor to the fiberglass ultimately breaking and the centerboard departing the boat. Needing to know how the stainless steel pin is secured into the centerboard trunk, as this needs to be completely removed to effect the repair. The securing plates and bolts are glassed over and want to get a better idea of where to cut away before digging into the fiberglass. Have looked on the Irwin site and the diagrams are all for the smaller Irwins. Called Gene Gammon and although it was great that he took the call, the insight was somewhat non-specific.
Does anyone have engineering diagrams for the pin attachment between the centerboard and keel or have direct insight, having been through the process?
Thank you so much for any help!
Sawtooth Sailor is offline   Reply With Quote
Old 12-10-2016, 15:14   #2
Registered User

Join Date: Jun 2016
Location: Sawtooth City, Idaho
Boat: Irwin 52 Ketch
Posts: 2
Re: Irwin 52 / 54 Centerboard Repair - Help!

Any thoughts? Searched for Irwin owners group but dead end redirects.
Sawtooth Sailor is offline   Reply With Quote
Old 12-10-2016, 15:42   #3
Registered User

Join Date: Jun 2014
Location: Up the mast, looking for clean wind.
Boat: Currently Shopping, & Heavily in LUST!
Posts: 5,629
Re: Irwin 52 / 54 Centerboard Repair - Help!

You can get a fix on where the various bits are via things like a Thermal Imager, X-ray, or other Non-Destructive Testing (NDT). And even a small compass might work to assist in localizing where any pieces of semi-ferrous metal are. Ditto on sounding the area with a hammer.

And given how much "fun" grinding glass inside of a boat is, getting some definitive images of the area & hardware would be worth it. If for no other reason than you'll save on how much glass you need to buy to re-laminate things.

Also, you can use a tape measure or indexed wire, stuck up inside of the board trunk to accurately create a sketch of the board's size & shape. Including the position of the pin. And with these, it'll aid you in better roughly discerning where the pin & hardware are located inside of the boat.
Just index you measurements off of easily reproducable witness locations inside of the boat. Or with reference to them anyway. So that you can find the pin's location.

As to the board's bushing for the pin. I can't say what it would be made of. Though depending on the weight of the board, you might look into replacing it with something composite. That way it would be easier to bond in place, & immune to corrosion. But if the board is heavy, read ballasted, ask a pro or three before bonding in a G10 tube instead of brass. Ditto on using similar materials in the sides of the trunk, & for the pin.

Also, much of the board's hardware, & pin may be non-ferrous. Which is another reason to look into NDT. And odds are much of it is metal, in order to handle the frictional wear from being cycled continuously when the boat's in the water due to her motion.

PS: Try contacting a yard or three which does a lot of work on CB boats, or that builds them. And you may wish to inquire into contracting with them, or someone with such expertise in order to assist you in doing this job properly. Especially given that this is a critical component, which must be fixed correctly.

The Uncommon Thing, The Hard Thing, The Important Thing (in Life): Making Promises to Yourself, And Keeping Them.
UNCIVILIZED is offline   Reply With Quote

centerboard, Irwin

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Merriman centerboard winch will raise but not lower centerboard - stuck in la paz autumnbreeze27 Construction, Maintenance & Refit 58 30-11-2015 20:20
Centerboard Repair capt lar Construction, Maintenance & Refit 0 15-03-2006 12:57

Advertise Here

All times are GMT -7. The time now is 15:36.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.