Association Forum - Baby Back Backing Plates

Assn Members Area · Join

Home.

Association Forum

Ships Store

Cruising

Racing

Technical Tips

Photo Gallery - New

Boat Search - Updated

Manuals & Brochures

Swap Meet

Links

Officer Flag Line & Staff

Bylaws & Constitution

Members Area

Join the Association

Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.

Association Forum

Username:	Password:
Save Password
Forgot your Password?

All Forums

Catalina/Capri 25/250 Sailor's Forums

Catalina 25 Specific Forum

Baby Back Backing Plates

New Topic

Topic Locked

Printer Friendly

Author

Topic

redeye
Master Marine Consultant

Member Avatar

3476 Posts

Initially Posted - 05/10/2010 : 05:39:28

I re-bedded the baby backstays and tried to turn the backing plates 180 degrees so the angle sticking down would be farther out and less likely to head bang. The plate now extends inside and still sticks out.

I guess I'll drill another hole in the plates to have them bed out further.

Re-bedding the baby backs was easy. Remove the cotter pins, loosen the turnbuckles, drop the nut, remove the backing plates, unscrew the top of the bolt plates and pull the bolt up. Spread a little boat life on the underside and reassemble.

Ray in Atlanta, Ga.
"Lee Key" '84 Catalina 25
Standard Rig / Fin Keel

Edited by - on

Steve Milby
Past Commodore

Members Avatar

USA
5897 Posts

Response Posted - 05/10/2010 : 07:40:28

I think you're referring to the "aft lower stays." The stays on either side of the mast are usually called the "uppers," the "forward lowers," and the "aft lowers."

Edited by - on

redeye
Master Marine Consultant

Members Avatar

3476 Posts

Response Posted - 05/10/2010 : 08:20:25

Or the aft midstays, or as I like to call them... the baby backs, for the little backstays on the mast. one of my favorite slangs on the boat..

word up.

Anyway, on my boat the backing plates on the Aft Lower Stays stick out. Ouch!

I think I'll remove them and drill out another hole with Granddaddy's hand cranked drill press.

Edited by - on

Stinkpotter
Master Marine Consultant

Members Avatar

Djibouti
9076 Posts

Response Posted - 05/10/2010 : 11:21:02

I think what Steve is alluding to is that there are things called "baby-stays" and "back-stays" both of which are completely different from "lower shrouds", both fore and aft. We old guys confuse easily.

Edited by - Stinkpotter on 05/10/2010 11:23:05

redeye
Master Marine Consultant

Members Avatar

3476 Posts

Response Posted - 05/10/2010 : 12:21:04

I guess it is just a joking reference to ribs, a southern thing. I thought it was pretty funny myself. ANyhoo....

I'm auctually pretty angry that the backing blocks stick out, when you sit at the table they are just behind your head. I've not seen many ( a few ) interior pictures where this was done.
Was this an accident, that they bedded the aft lower shrouds so far in that the blocks become a hazard below, or were they having problems with the decks giving way under the load so they put them further in to add strength?

My options are to drill the holes for the shrouds further out, or drill the plates.

Edited by - on

Happy D
Admiral

Members Avatar

921 Posts

Response Posted - 05/10/2010 : 18:09:25

My old backing plates are 4x6" 3/8" thick stainless drilled 3/8". They are drilled off center so they sit back behind the edge. I drilled them 1/2" to fit the new style chainplates. I've seen the newer setups that are a piece of angle iron. Can't figure out what that is all about.
I think I have the new ones that came with the upgraded chainplates. They are thin flat pieces of stainless. You're welcome to them for the cost of shipping if you want them. They are drilled 1/2".

Edited by - on

redeye
Master Marine Consultant

Members Avatar

3476 Posts

Response Posted - 05/11/2010 : 03:30:23

Dude.. that would be nectar. ray@rayswords.com I just don't get the angle backing plates.

Edited by - on

redeye
Master Marine Consultant

Members Avatar

3476 Posts

Response Posted - 05/11/2010 : 10:05:17

Happy.. eme your address and I'll send money, for shipping and the plates, if you still have them. Thank you.

Edited by - on

glen
Captain

Members Avatar

359 Posts

Response Posted - 05/11/2010 : 12:15:41

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by Happy D
 I've seen the newer setups that are a piece of angle iron. Can't figure out what that is all about.

<hr height="1" noshade id="quote"></blockquote id="quote">Happy I think they did that so you can hit your head on the angle instead of the nut. Probably something an engineer was told to look at

Edited by - on

Stinkpotter
Master Marine Consultant

Members Avatar

Djibouti
9076 Posts

Response Posted - 05/11/2010 : 15:24:34

Mine was an L-shaped aluminum extrusion. I remember hearing that early boats suffered from the backer not being stiff enough against the relatively thin head-liner, which is taking the strain and is not in contact with the core in all places. So they stiffened the backer by making it an L.

Edited by - on

Happy D
Admiral

Members Avatar

921 Posts

Response Posted - 05/11/2010 : 18:14:49

Ray, I'll hunt them down tomorrow and send you a note.
Dan

Edited by - on

Happy D
Admiral

Members Avatar

921 Posts

Response Posted - 05/11/2010 : 18:24:20

On 0029, the core was originally crushed at the lower chain plates. I drilled out the deck and core at my lower chain plates with a 2" diameter hole saw. I filled the core void with solid fiberglass pucks and thickened epoxy. I beveled the deck area 5" diameter and filled it with 2408 Bouble biax flush to the deck surface. Bought the new 1/2" chain plates to be installed with the old 3/8" thick backing plates and I beleve you could probably lift the boat using just the lower chain plates. Maybe the boat will sink from too much weight. I really upgraded this area.

Edited by - on

redeye
Master Marine Consultant

Members Avatar

3476 Posts

Response Posted - 05/12/2010 : 04:09:06

Yup.. I figured they must have had a problem so I am a little worried about making sure my changes will not cause more. I'm looking at adding similar aluminum backing blocks without the angle, after I look at the plates happy might find.

I've got a good metal place here in Atlanta I've worked with before and I've changed out the plates on the aft sides of the tiller with thicker plates and that worked out well.

Edited by - on

Happy D
Admiral

Members Avatar

921 Posts

Response Posted - 05/15/2010 : 15:29:32

I finally found them Ray. Sorry for the delay.
I drilled two of them to use a backing plates for the Gudgeons and then ended up using something else.
So, I have all four, two are drilled. You can have all four or if you want or I'll send you the two undrilled ones and if someone wants backing plates for their gudgeons, they can have the other two. Whatever you want to do Ray.
Dan

Edited by - on

redeye
Master Marine Consultant

Members Avatar

3476 Posts

Response Posted - 05/17/2010 : 04:10:36

Eme your address and I'll get a check off to you asap. I'll take the undrilled ones and THANKS for the help.

Edited by - on

Happy D
Admiral

Members Avatar

921 Posts

Response Posted - 05/17/2010 : 14:00:01

Does anybody want the drilled ones for gudgeon backing plates? I'm not going to use them.
Shoot me an email at catalina0029@ yahoo.com

Edited by - on

Topic

New Topic

Topic Locked

Printer Friendly

Jump To:

Association Forum

Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.