Discussions on everything about the J/30 Sailboat!
With your one stop source
The J/30 Marketplace
Join or Renew
Class Membership
Search

March
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
No Birthdays
Newest Members
zharv, Corey, Suzie, SSA-BlueJ, Liam Kersch
1017 Registered Users
Crew Manager Boat Websites

Boat Website subscriptions with
Crew Scheduling & Notifications

Created by former J/30 Rhapsody owner

J/30 Social Network
Popular Topics(Views)
976,298 Dacron Main
162,662 Ananda's Refit
Forum Statistics
Forums28
Topics3,983
Posts19,061
Members1,018
Most Online238
Feb 9th, 2024
Previous Thread
Next Thread
Print Thread
how to keep proper tensions #454
09/25/06 01:35 PM
09/25/06 01:35 PM

A
Anonymous OP
Unregistered
Anonymous OP
Unregistered
A


i tuned the standing rigging for a race on sunday at 42 out/40 in. in the first leg i noticed that the inners were loosing tension while on leward. we tried to tighten them while racing but couldn't do a good job at it. who should i deal with this?

Re: how to keep proper tensions #455
09/25/06 01:59 PM
09/25/06 01:59 PM
Joined: Mar 2000
Posts: 124
New York, NY, USA
dwl Offline
Senior Member
dwl  Offline
Senior Member
Joined: Mar 2000
Posts: 124
New York, NY, USA
Ah... one, in both PHRF and under the one design rules, you aren't supposed to change your rigging tension after the prep signal.

Two, your tension isn't changing, the rig's loading up. On any conventional stayed rig, when you go upwind, the rig loads up on the windward side, and unloads on the leeward side. That's fully expected. On most boats, properly tuned, the lee lowers go sloack when your properly powerd up and heeled over, and the uppers get softer as well. A fair bit of the load generated by the sails is lateral. (Hey, that's why boats heel, pretty much) All that load's pulling against the windward shrouds and towards the leeward ones.

- David

Re: how to keep proper tensions #456
09/26/06 12:50 PM
09/26/06 12:50 PM
Joined: Oct 2007
Posts: 13
San Juan, PR
Carlos Offline
Member
Carlos  Offline
Member
Joined: Oct 2007
Posts: 13
San Juan, PR
we noticed that the lowers got very sloack and got worst with every tack. when we got to the marina both inners were extra soft. we meassured them and confirmed that they lost tension (from 40 before the race to 32 at the end of it).

i know i shouldn't have worked with them during the race; but, i'd rather have a DQ than a broken mast.

what's your recommendation, if any, to prevent it from happening again?

thanks for your time and counselling.

Re: how to keep proper tensions #457
09/26/06 01:42 PM
09/26/06 01:42 PM
Joined: May 2007
Posts: 2,668
Portsmouth, RI
Rhapsody #348 Offline
Past J/30 Class President
Rhapsody #348  Offline
Past J/30 Class President
Joined: May 2007
Posts: 2,668
Portsmouth, RI
Quote
Originally posted by Sultan:
...we meassured them and confirmed that they lost tension (from 40 before the race to 32 at the end of it)...



Just a thought - if you measured without the backstay loose, it will make the lowers slack more. Was the backstay fully slack for both measurements? If it was, you have some serious issues with your rig moving. Check things like base of the mast not locked in place or more seriously pending failure such as attachment points (chainplates, fittings on shrouds) etc. Moving from 40 to 32 is a whole bunch of turns on the turnbuckles!

Re: how to keep proper tensions #458
09/26/06 02:43 PM
09/26/06 02:43 PM
Joined: May 2007
Posts: 50
Rochester, MN
Scott Offline
Senior Member
Scott  Offline
Senior Member
Joined: May 2007
Posts: 50
Rochester, MN
On a heavy air day, we had our lowers unscrew themselves to within about 3 threads of coming apart. We were extremely close to losing the rig. For 4 years before that I never pinned the shrouds, now I do. Dumb question, but are they pinned to make sure they don't turn?

Re: how to keep proper tensions #459
09/26/06 04:55 PM
09/26/06 04:55 PM
Joined: Mar 2000
Posts: 124
New York, NY, USA
dwl Offline
Senior Member
dwl  Offline
Senior Member
Joined: Mar 2000
Posts: 124
New York, NY, USA
Ah. Ok. Yes, if they are not pinned, conventional turnbuckles can (and in heavy air *WILL* turn) Make sure they're pinned. With Ronstan turnbuckles, make sure to take an extra hard turn on the locknut, and/or tape it.

- David

Re: how to keep proper tensions #460
09/26/06 05:12 PM
09/26/06 05:12 PM
Joined: Oct 2007
Posts: 13
San Juan, PR
Carlos Offline
Member
Carlos  Offline
Member
Joined: Oct 2007
Posts: 13
San Juan, PR
thanks a lot guys!

no, they were not pinned. i'll make sure they are before sailing again. nonetheless, i will survey the rig as a whole. it's scary to think that the mast is moving below deck. even more, figure out why did it move. at least, the chainplates are new (changed both on Feb 2006).

you have been of great help. i appreciate your time.

hey! in Puerto Rico we have a few activities setup for the winter. if any of you happen to be around and feel like racing PHRF (we don't have a J-30 fleet yet) feel free to write.

coloncon@aol.com

thanks again!


Moderated by  David Erwin 

Who's Online Now
0 registered members (), 34 guests, and 1 spider.
Key: Admin, Global Mod, Mod
Photos
2023 Clipper Cup - Conundrum USA32866
Windy Wednesday night
Hurricane Gulch San Pedro, CA
Truckin'
Endeavour (246) Sailing in Prince Edward Island
Recent Posts
Hull # 229 Falcon parts for sale
by Sunrise. 03/16/24 08:26 PM
Adjusting Throttle & Transmission Controls
by Rhapsody #348. 03/10/24 08:25 AM
Engine Cover Steps
by David Erwin. 03/10/24 01:35 AM
Cushions
by Corey. 02/25/24 10:02 PM
Sold: #2 Dacron Jib
by Brent. 02/17/24 05:12 PM
J/30 Survey
by David Erwin. 02/16/24 06:43 PM
looking for j30 center table
by wilybilds. 02/16/24 04:49 PM
1984 J/30 - Hull #488 Shamrock
by Bruce Irvin. 01/30/24 12:12 AM
Cabin Table Wanted
by B Davis. 01/20/24 11:03 PM
Fuel Fill O Ring
by watchoverya. 01/11/24 05:35 PM
Powered by UBB.threads™ PHP Forum Software 7.6.1.1