Association Forum - Congrats

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

General Sailing Forum

Congrats - New Tech Tip

New Topic

Topic Locked

Printer Friendly

Author

Topic

britinusa
Web Editor

Member Avatar

USA
5404 Posts

Initially Posted - 12/04/2008 : 07:08:28

Todd Bosch provided a very nice Tech Tip on the C25 Through-hull upgrade. You'll find it in the Tech Tips > C25 > Hull and All C25 Tech tips pages.

This is a very nicely prepared tech tip article. Todd provided me with both a pdf and word doc of his tip.

Kudos!
/tech/tech25/Dora-Thruhull-upgrade.asp

Of course, this might spur a bunch of additional tech tips!!!
Tips can be in pdf, or regular text with images.

Paul

Edited by - britinusa on 12/04/2008 07:11:40

pastmember
Master Marine Consultant

Members Avatar

2402 Posts

Response Posted - 12/04/2008 : 08:03:46

Nice document, I am not sure why anyone would use a backing plate on such a strong hull, I have had a few boats over the years and have never seen a backing plate on a Marlon through hull.

Edited by - pastmember on 12/04/2008 08:04:17

tbosch
Navigator

Members Avatar

163 Posts

Response Posted - 12/04/2008 : 09:44:20

I people will find the article useful. I thought I might as well share what I learned. I have a 2 hour drive between home and the boat so extra trips were a bummer. Having the right tools and the right size hole saw are important.

Frank makes a good and interesting point about the backing plates. They may be unnecessary. They came with the Catalina Direct kit so I used them. The hull was at least half an inch thick in these areas.

Edited by - on

jerlim
Master Marine Consultant

Members Avatar

USA
1484 Posts

Response Posted - 12/04/2008 : 11:38:54

Replacing our two thru-hulls was scheduled for this winter. However, having read through Todd's EXCELLENT description, I'm rethinking the need. I really wanted to just upgrade the valves, but planned to redo it all, as I expected to stress and possibly damage the integrity of the original thru-hulls...

Edited by - on

piseas
Former Treasurer

Members Avatar

USA
2017 Posts

Response Posted - 12/04/2008 : 15:42:21

Todd, for a newbie or otherwise, that is a very nice presentation, especially in PDF form.
As the Treasurer, I am gonna send you out a Catalina Association decal for such a fine job. Nice work.

Steve A

Edited by - on

dmpilc
Master Marine Consultant

Members Avatar

USA
4593 Posts

Response Posted - 12/04/2008 : 18:10:11

That was an excellent presentation. Thanks! I would also question the need for the backing board given the thickness of the hull. How were you able to enlarge the hole in the hull without the hole saw blade wandering? Was the enlargement difference enough for the blade to stay in place, i.e. enough hull material inside the circle to keep the blade in place.
So far, mine appear to be holding up okay. It's comforting to see that yours was actually in pretty good shape before the work. I'm not sure I would trust myself to take on that project. I wonder why Catalina installed them plumb instead of vertical to the hull. Looks like vertical would have been easier.

Edited by - on

tbosch
Navigator

Members Avatar

163 Posts

Response Posted - 12/04/2008 : 18:38:05

<blockquote id="quote">quote:<hr height="1" noshade id="quote">Originally posted by dmpilc
 ...How were you able to enlarge the hole in the hull without the hole saw blade wandering? Was the enlargement difference enough for the blade to stay in place, i.e. enough hull material inside the circle to keep the blade in place.<hr height="1" noshade id="quote"></blockquote id="quote">
Drilling the holes was tricky. The original hole needs to be enlarged and the angle through the hull has to change. When you line up the hole saw the pilot bit is floating in the original hole. To get started I hand held a pre-drilled backing block against the hull and used it as a guide. That kept the wandering to a minimum.

This would be a much simpler project if you skip mounting the backing blocks. I guess you would have to look at the thickness of your own hull an make a judgement call. In hind sight, I think my hull was thick enough to do without the blocks.

Edited by - on

Deric
Captain

Members Avatar

USA
408 Posts

Response Posted - 12/04/2008 : 20:14:25

Todd,

Very nice work: the new valve and the documentation. I worked on my valve last year during the winter months. I thought I would post before and after picturs here as a matter of reference because I also used a backing plate. You will also note the original valve looked exactly like the valve on your boat.

I would have done a better job if I had your article a year earlier. Heh.

Great work Todd, I look forward to reading your next tip.

Deric

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.