Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 05-01-2015, 04:43   #1
Registered User
 
Boardshorts's Avatar

Join Date: Feb 2013
Location: Brisbane, Australia
Boat: Lagoon 440
Posts: 42
Lacing a new trampoline - tips ?

I am looking for help / tips / information / videos / links etc on the best ways to lace a new trampoline ... and the newbie pitfalls we should try and avoid .... before we begin the task on our Lagoon 440.

Murphy's Law means I can no longer find the tutorial style video that I had previously seen online ..... and it seems that there are many websites with nice pictures but little advice on the best ways to get the proper tension.

Any advice would be much appreciated.

Thanks
__________________

__________________
Boardshorts is offline   Reply With Quote
Old 05-01-2015, 08:12   #2
Registered User

Join Date: Oct 2007
Location: Winters cruising; summers Chesapeake Bay
Boat: Catana 471
Posts: 1,239
Re: Lacing a new trampoline - tips ?

Here you go:

First, get a couple of these >> Maui Hookup: The Easy to Use Windsurfing Sail Rigging Tool

Then get a nice set of vise grips and pad the jaws with duct tape.

Lay out the new tramp on top of the old tramp and stretch it out to its corners using your winches. See pictures. I can't remember if the 440 has a single or double tramp, but it doesn't matter. Rig up lines and blocks to each corner and winch it in - in two halves if you need to. When the corners are set, start lacing, cutting away the old tramp as you go.

As you lace up the tramp, tighten at each grommet with the Maui Hookup and clamp with the vise grips as shown in the picture below. It works best with one person pulling on the Hookup and a second person clamping with the vise grips. Move to the next grommet. Plan ahead for a couple beers....

Good luck!

2 Hulls Dave
Attached Thumbnails
Click image for larger version

Name:	IMG_1142.JPG
Views:	303
Size:	200.6 KB
ID:	94962   Click image for larger version

Name:	IMG_1146.JPG
Views:	281
Size:	143.0 KB
ID:	94963  

Click image for larger version

Name:	IMG_1147.JPG
Views:	291
Size:	171.2 KB
ID:	94964   Click image for larger version

Name:	IMG_1149.JPG
Views:	331
Size:	210.1 KB
ID:	94965  

Click image for larger version

Name:	IMG_1159.JPG
Views:	454
Size:	227.4 KB
ID:	94966   Click image for larger version

Name:	IMG_1167.JPG
Views:	359
Size:	206.3 KB
ID:	94967  

__________________

__________________
2Hulls is offline   Reply With Quote
Old 09-01-2015, 14:28   #3
Registered User

Join Date: Sep 2014
Location: Sydney
Boat: Lagoon 400
Posts: 1,092
Re: Lacing a new trampoline - tips ?

hum, single weak spot in rope can get whole trampoline down. or am i missing something ?
__________________
arsenelupiga is online now   Reply With Quote
Old 09-01-2015, 15:15   #4
Registered User

Join Date: Oct 2007
Location: Winters cruising; summers Chesapeake Bay
Boat: Catana 471
Posts: 1,239
Re: Lacing a new trampoline - tips ?

Quote:
Originally Posted by arsenelupiga View Post
hum, single weak spot in rope can get whole trampoline down. or am i missing something ?
That's a reasonable suspicion.

For my installation, each side is a separate line, so let's go with a single break and one whole side comes undone. I considered this and originally set out to install separate, single lines distributed along each side as backups. OK, OK, so I put this off for a year.

When I finally got around to it, it was time to re-tension all sides due to tramp creep. It had sagged a little. In the act of re-tightening we first loosened each side and became aware of how stable it was. The lines had "settled in" and it was quite difficult to "move" the line along a side as we re-tightened. I concluded that a theoretical break would not result in a whole side coming undone like a house of cards. It took a lot of effort to over come the friction in the grommets and boat attachment rings. In the end I did not add the extra "safety" lines. After that one tightening, no further tightening has been necessary. The tramp has been on for almost 7 years with no issues, including line breaks. I inspect them often while lounging on the tramp with a rum....

2 Hulls Dave
__________________
2Hulls is offline   Reply With Quote
Old 09-01-2015, 15:20   #5
Registered User

Join Date: Jun 2006
Posts: 558
Re: Lacing a new trampoline - tips ?

Don't fall in ? If you had a mono hull you wouldn't have to worry about it. Oohhhh what!
__________________
mike d. is offline   Reply With Quote
Old 09-01-2015, 15:28   #6
Registered User

Join Date: Oct 2007
Location: Winters cruising; summers Chesapeake Bay
Boat: Catana 471
Posts: 1,239
Re: Lacing a new trampoline - tips ?

Quote:
Originally Posted by mike d. View Post
Don't fall in ? If you had a mono hull you wouldn't have to worry about it.
Yes I would. If I had a mono hull I'd be worried about falling over the side off a perpetually wet, slick, slanted deck. Probably tripping over rigging.....

2 Hulls Dave
__________________
2Hulls is offline   Reply With Quote
Old 09-01-2015, 22:51   #7
Registered User
 
clownfishsydney's Avatar

Join Date: Mar 2014
Location: Sydney, Australia
Boat: Lightwave 38' Catamaran
Posts: 304
Re: Lacing a new trampoline - tips ?

When I redid ours I did three separate lines along each side. The cord is thinner, I am using it as the weak link so that if something breaks, it is one of the cords rather than the trampoline or the connections on the boat.
__________________
Michael and Kelly
Catlypso - Web Site
Lightwave 38' cat
clownfishsydney is offline   Reply With Quote
Old 10-01-2015, 06:08   #8
Elvish meaning 'Far-Wanderer'
 
Palarran's Avatar

Cruisers Forum Supporter

Join Date: Jan 2008
Location: Me - Michigan / Boat - Tenerife
Boat: 56' Fountaine Pajot Marquises
Posts: 2,641
Re: Lacing a new trampoline - tips ?

Those are good pictures Dave has. My attachment points on two sides are round knob's instead of stainless hoop's. If you have any of these, make the line go all the way around the knob or after the rope/tramp stretch it will come off. Depending on what fabric the tramp is made from you may want to leave some slack to the ropes. If you have the vinyl tramps with small holes leave it loose as any major weather will tear it off.
__________________
Not all who wander are lost

http://www.sailblogs.com/member/palarran/
Palarran is offline   Reply With Quote
Old 10-01-2015, 07:18   #9
Registered User

Join Date: Oct 2007
Location: Winters cruising; summers Chesapeake Bay
Boat: Catana 471
Posts: 1,239
Re: Lacing a new trampoline - tips ?

I did not describe what I was replacing and maybe I should have.

You can see in the pictures the original tramp and the method it was attached - individually tied lines at every point. Horror stories abounded among other Catana owners of replicating this attachment method. And to tighten a loose tramp you had to go through the entire process again, one point at a time. For this reason I chose a new tramp with grommets and applied the single line (on a side) lacing method. Tightening it the one time it has been needed took a couple hours and did not involve any line cutting or replacement.

I was initially concerned about the one-break-and-you-fall-through scenario, which is why I went with a single line on each side. But as I described above I convinced myself that this fall through scenario is not likely. Try cutting your shoelace at one point half way down and see how long it takes for your shoe to fall off. There is a much greater chance, I believe, in the tramp itself failing. Of course, this does not mean you can ignore the lacing and assume it will not rot and multiple points fail at once, even on multiple sides.

2 Hulls Dave
__________________
2Hulls is offline   Reply With Quote
Old 10-01-2015, 20:03   #10
DRS
Registered User
 
DRS's Avatar

Join Date: Jun 2009
Location: Vancouver BC
Boat: Lagoon 380
Posts: 351
Images: 7
Re: Lacing a new trampoline - tips ?

we have the around the button and through the grommet design on our 380. We used a separate line for each side and tied a knot in every 4th grommet. it meant we only had to pull tight a smaller amount of line and the thought of losing a whole side to single line break was at least in part reduced as it could only unravel to the next knot.
Was it right? I have no idea but it worked
Derick
__________________
You can sail anywhere on the planet and never be more than 7 miles from land - it might be straight down, but its never more than seven miles
DRS is offline   Reply With Quote
Old 11-01-2015, 06:36   #11
cruiser

Join Date: Jan 2012
Location: Ocean Springs, MS
Posts: 279
Re: Lacing a new trampoline - tips ?

Here is a link to Sunrise Yacht Products, probably the biggest trampoline and net fabricator in the US. A professional opinion, that is to say:

SYP on installation
__________________
jaybird1111 is offline   Reply With Quote
Old 21-01-2015, 08:16   #12
TOT
Registered User
 
TOT's Avatar

Join Date: Jul 2013
Location: Singapore
Boat: Lagoon 450
Posts: 273
Re: Lacing a new trampoline - tips ?

Great link jaybird1111 😃

TOT
__________________
TOT Team
TOT is offline   Reply With Quote
Old 28-01-2015, 08:53   #13
Senior Cruiser
 
Roy M's Avatar

Cruisers Forum Supporter

Join Date: Feb 2007
Location: Southwestern Yacht Club, San Diego, CA
Boat: Searunner 40 trimaran, WILDERNESS
Posts: 3,041
Images: 4
Re: Lacing a new trampoline - tips ?

Great timing, folks! I am almost ready to lash my new Sunrise bow nets into place. I will probably use the zig-zag/perpendicular style with 1/4" Spectra. My last set used 1/4" polyester, zig-zag, and it was drawn up pretty tightly. Worked for many years and only needed readjustment about a year into its original install. This should be a good test of the Spectra for both chafe and UV.
__________________
Roy M is offline   Reply With Quote
Old 28-01-2015, 20:42   #14
Registered User

Join Date: Sep 2011
Location: Innisfail, North Queensland, Australia
Boat: Lagoon 380 #241
Posts: 298
Re: Lacing a new trampoline - tips ?

Here's a photo of our blue Sunrise tramp that I installed with blue dyneema/spectra on our Lagoon 380 some 12 months ago. This photo was taken immediately after I finished the initial install. I have re-tensioned it since & the gaps are no where near as large & it fits perfectly.

After 12 months the dyneema is showing no signs of abrasion & the colour has just faded a little. As you can see I used separate lengths for each side. I doubt that the dyneema is going to be an issue at all as the rated breaking strain is so far above what's ever going to be loaded on it

I too installed over the old rotting tramp, just cutting the old one away as I worked my way round. The initial install took no longer than a couple of hours, working on my own.

The quality of the Sunrise tramp & their service was awesome. Richard Leng emailed a very detailed drawing of the tramp dimensions for the L380 for us to check before construction. There were slight differences & they then altered & made it to measure. Very comforting considering we are in North Queensland, Oz ...... a very long way away from them.

Dave

__________________

__________________
Seabreeze, Lagoon 380 #241
Innisfail, North Queensland, Australia ... Cruising the waters of the Great Barrier Reef
www.sea-breeze.com.au
gspeak is online now   Reply With Quote
Reply

Tags
ramp

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Lavezzi 40: New Trampoline Le Doume Fountaine Pajot 9 07-01-2012 05:12
Eight-Year Warranty on Dyneema Trampoline Webbing fastcat435 Commercial Posts 13 14-03-2011 01:33
Trampoline Vs. Solid Foredeck Ex-Calif Multihull Sailboats 39 21-03-2009 16:51
Trampoline catbluemoon Multihull Sailboats 1 14-08-2007 15:16
Trampoline Suppliers & Fabricators muskoka Multihull Sailboats 3 29-07-2007 12:40



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 05:20.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.