Cruisers Forum
 


Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on Cruisers Forums. Advertise Here
 
Thread Tools Search this Thread Rate Thread Display Modes
Old 05-02-2023, 07:43   #1
cxz
Registered User
 
cxz's Avatar

Join Date: Mar 2018
Location: Copenhagen, Denmark
Boat: Hallberg-Rassy Monsun 31
Posts: 39
Dyneema fluff

Just made some Dyneema soft shackles with some new 4mm single braid Dyneema but was surprised to see that it already has alot of fluff and thread coming off when rubbed against itself. Is that normal? Or what causes this?
cxz is offline   Reply With Quote
Old 06-02-2023, 03:16   #2
Marine Service Provider

Join Date: Dec 2010
Location: Little Compton, RI
Boat: Cape George 31
Posts: 3,075
Re: Dyneema fluff

It depends on the coating. Natually, Dyneema fibers are very fine and fluffy, and must be coated (preferably in the yarn before braiding) so they keep together better. Different manufacturers use different coatings, or thicker or thinner depending on intended use.
If it's well coated, and it's fraying, then you have a big chafe issue to address.
__________________
Ben
zartmancruising.com
Benz is offline   Reply With Quote
Old 06-02-2023, 15:36   #3
cxz
Registered User
 
cxz's Avatar

Join Date: Mar 2018
Location: Copenhagen, Denmark
Boat: Hallberg-Rassy Monsun 31
Posts: 39
Re: Dyneema fluff

That's interesting, the soft shackle has never been in use. This was freshly made and I simply rubbed it against itself a few times. The other one I made was in grey and I assume they're not colour-coded.
cxz is offline   Reply With Quote
Old 06-02-2023, 16:17   #4
Registered User
 
StuM's Avatar

Cruisers Forum Supporter

Join Date: Nov 2013
Location: Port Moresby,Papua New Guinea
Boat: FP Belize Maestro 43 and OPBs
Posts: 12,891
Re: Dyneema fluff

Note that Dyneema is a brand name (although it has recently become genericised like aspirin, band-aid,biro etc)

Where did you get the rope?
Did it have a brand name, did it come from a reputable supplier or is it just some cheap generic UHMWPE (from China?)
StuM is offline   Reply With Quote
Old 06-02-2023, 17:07   #5
cxz
Registered User
 
cxz's Avatar

Join Date: Mar 2018
Location: Copenhagen, Denmark
Boat: Hallberg-Rassy Monsun 31
Posts: 39
Re: Dyneema fluff

Got it from my local chandlery here in Denmark. Probably did have a brand name, but just saw it come off the spool. Could have been LIROS, but they are a huge EU supplier so I can't imagine there being any production issues.
cxz is offline   Reply With Quote
Old 06-02-2023, 18:07   #6
Registered User
 
fxykty's Avatar

Join Date: Apr 2016
Location: Indonesia
Boat: Outremer 55L
Posts: 3,924
Re: Dyneema fluff

Quote:
Originally Posted by cxz View Post
Just made some Dyneema soft shackles with some new 4mm single braid Dyneema but was surprised to see that it already has alot of fluff and thread coming off when rubbed against itself. Is that normal? Or what causes this?

Not normal at all, properly manufactured UHMWPE line should be quite stiff and smooth even after working due to its individual fibre coatings for UV protection and chafe resistance. Dyneema and ISM are the two original manufacturers and license to others (such as Hampidjan). Acera (Timm Ropes) is a big one in Northern Europe (comes in yellow) that is properly formulated. Cheap UHMWPE line (aka Chineema, but of course is made elsewhere too) may be externally coated only, so the individual fibres will fluff and fray as they are exposed due to splicing. OK for non critical work, but nothing where you expect consistent strengths.
fxykty is offline   Reply With Quote
Reply

Tags
dyneema

Thread Tools Search this Thread
Search this Thread:

Advanced Search
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
Series Drogue Rode . . . Dyneema ? cvondo Anchoring & Mooring 7 11-06-2010 10:18
crazy idea for those with deep pockets, spectra (dyneema) anchor line schoonerdog Multihull Sailboats 22 27-10-2008 01:46

Advertise Here


All times are GMT -7. The time now is 08:29.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2024, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.