Discussions on everything about the J/30 Sailboat!
With your one stop source
The J/30 Marketplace
Join or Renew
Class Membership
Forum Search
July
M T W T F S S
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31
Today's Birthdays
There are no members with birthdays on this day.
Newest Members
angelacrewman28, ShadeStreet, SSN650, Saildork, Freckles
1,061 Registered Users
Crew Manager Boat Websites

Boat Website subscriptions with Crew Scheduling & Notifications
-->Subscribe Here<--
Created by former J/30 Rhapsody owner

Popular Topics(Views)
1,146,045 Dacron Main
212,918 Ananda's Refit
Forum Statistics
Forums28
Topics4,053
Posts19,271
Members1,062
Most Online1,565
May 14th, 2026
Previous Thread
Next Thread
Print Thread
Joined: Mar 2010
Posts: 12
Member
Member
Joined: Mar 2010
Posts: 12
AHOY,

yesterday in high-seas the port-side-aft portal was deep-sixed when a cabin denizen head-planted it. Is one available or do I need all four?

Cheers,


Stuart Smith
owner J30 Presto! hull #82
prior J30 Novia hull #3
STU_SMITH@ATT.NET
Joined: May 2007
Posts: 1,234
Senior Member
Senior Member
Joined: May 2007
Posts: 1,234
It didn't break ... so did it go overboard.

If it pops out generally the sealant is gone. so you have to reset them all anyway ... some were put in with 5200 which makes it more difficult and not recommended.

Generally we take the old fogged up ones and have them cut at a plastic supply house. The last set I did I think was under $20 each.

somewhere there is a thread lexan vs acrylic and a video of one of my 13 year old crew kids replacing them.

Joined: Mar 2010
Posts: 12
Member
Member
Joined: Mar 2010
Posts: 12
Vic,

thanks for your reply
are the four portals symmetric -?
you're right about the old sealant
- Presto! could use a new set of 4 ...


Stuart Smith
owner J30 Presto! hull #82
prior J30 Novia hull #3
STU_SMITH@ATT.NET
Joined: May 2007
Posts: 1,234
Senior Member
Senior Member
Joined: May 2007
Posts: 1,234
as i remember lefts are same, rights are same mirror images which only really applies depending on what protective skin they have on the plastic. I think I had them cut 2 and flip it to cut two.

going back 5 years or so here. silkaflex something that works with the exact plastic to bond.

Joined: Oct 2016
Posts: 218
C
Senior Member
Senior Member
C Offline
Joined: Oct 2016
Posts: 218
It is really easy to make your own if you have a router and a pattern following bit. Use one of old port lights as the pattern. Then make sure to use a small round over bit to take the 90° off the side that gets mated to the hull.


Dave Graf
Joined: Jan 2017
Posts: 34
Senior Member
Senior Member
Joined: Jan 2017
Posts: 34
What is the thickness of the polycarbonate/acrylic? Mine on #35 look like they've been replaced but they are recessed. I assume they should be flush. I already bought the black sikaflex 291 that should be the right stuff to stick to the window. The portals are about #78 on my to do list, but since you brought it up...

Joined: Oct 2016
Posts: 218
C
Senior Member
Senior Member
C Offline
Joined: Oct 2016
Posts: 218
Just looked at the new material I have used to make the port lights and it is just under 1/4" with the protective paper still on and it matches what I removed (with the exception that you can see through the new stuff). The polycarbonate I used was easy to cut initially on the tablesaw and then finish with the pattern following router bit. The plastics place I bought the material from says they use routers almost exclusively to cut these materials, which kind of surprised me. I would have thought the router bits would tend to burn or melt the plastic.


Dave Graf
Joined: Jul 2004
Posts: 891
J30.us
J30.us
Joined: Jul 2004
Posts: 891
I used safety tinted glass and love it. Seawater turns lexan and other plastic products cloudy. I called my local car auto business and asked for a list of people who do glasswork on the side. I took him a template. $75. As well you can contact Bill Smith to use the same fellow who cut the windows for Awesome. At the recommendation of my yard, Sintes Boat Works, I used black Silaflex on the inside and white on the outside. The black helped make a consistant blend with the dark tint while the white matched the external paint. The job cost about $100 total including glass and caulk. After several years - no leaks! Reference: http://www.silaflex.com/ Here is a photo of the back window. I'll try to find a better shot.

Last edited by David Erwin; 04/18/17 12:28 AM.

Moderated by  David Erwin 

Link Copied to Clipboard
Who's Online Now
0 members (), 177 guests, and 3 robots.
Key: Admin, Global Mod, Mod
Photos
2023 Clipper Cup - Conundrum USA32866
2023 Clipper Cup - Conundrum USA32866
by mattjenPDX71, January 7
Windy Wednesday night
Windy Wednesday night
by dlabrosse, January 7
Hurricane Gulch San Pedro, CA
Hurricane Gulch San Pedro, CA
by Austin, July 23
Truckin'
Truckin'
by forbes, August 1
Endeavour (246) Sailing in Prince Edward Island
Recent Posts
Spinnaker Halyard
by David Erwin - 07/07/26 10:18 AM
170% PHRF Genoa for Sail
by David Erwin - 07/06/26 11:54 AM
J/30 #517 "Jolene" For Sale
by LTGskipper - 07/02/26 08:59 AM
Throttle assembly issue
by Tbo - 07/01/26 11:47 AM
Sailrite LSZ-1 Ultrafeed Sewing Machine
by angelacrewman28 - 06/30/26 05:36 AM
class forte carbon fiber spin pole
by wilybilds - 06/27/26 12:53 PM
EZ Rating DIscussion
by David Erwin - 06/23/26 11:14 AM
1980 J30 hull 192 Fairfield, CT - sold
by ShaneKilberg - 06/21/26 02:00 PM
J/30 Instrument Panel Type A Rebuild
by David Erwin - 06/10/26 04:22 PM
Powered by UBB.threads™ PHP Forum Software 8.0.0