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
Popular Topics(Views)
1,145,973 Dacron Main
212,675 Ananda's Refit
Forum Statistics
Forums28
Topics4,053
Posts19,271
Members1,062
Most Online1,565
May 14th, 2026
Previous Thread
Next Thread
Print Thread
#5821 12/06/08 08:05 PM
Joined: May 2007
Posts: 268
Senior Member
Senior Member
Joined: May 2007
Posts: 268
OK, so I know the class rules show min and max size, but I still can't get my head around the quotes from 2 sailmakers at 98%
I could have sworn my favorite dacron #3 was a 105%.... somebody tell me what they have???? Maybe the dacron was never meant to be "class legal"

Crew Manager Boat Websites

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

#5822 12/07/08 01:17 AM
Joined: May 2007
Posts: 2,685
Likes: 1
Past J/30 Class President
Past J/30 Class President
Joined: May 2007
Posts: 2,685
Likes: 1
Check out the following spreadsheet with class sail sizes: J/30 Class Sail Dimensions Use the LP/J ratio for % size

Here are the dimensions on a new #3 as measured when I accepted it from Quantum Sails last spring:
LP 3594mm = 11' 9.5" (spec 3550 - 3658mm)
Luff length 9955mm = 32' 7.9" (spec 9982mm max)
Using J=3505mm (11' 6") results in LP/J as measured 102.5%
LP/J Min and Max % ratios 101.3% to 104.4%

[This message has been edited by Rhapsody #348 (edited 12-07-2008).]

Rhapsody #348 #19446 05/19/25 08:55 AM
Joined: Feb 2017
Posts: 37
W
Senior Member
Senior Member
W Offline
Joined: Feb 2017
Posts: 37
Bill, the link to the dimensions spreadsheet is no longer working. Can you repost or email to bob.scott774@gmail.com?

Thanks.

watchoverya #19447 05/20/25 11:58 AM
Joined: May 2007
Posts: 2,685
Likes: 1
Past J/30 Class President
Past J/30 Class President
Joined: May 2007
Posts: 2,685
Likes: 1
I just fixed the link in the original post. Try it now.


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