List: trawlers@lists.trawlering.com
From: adagiomarine@csi.com
Re: Snubber Design
Mon, Nov 30, 1998 10:25 PM
Nick,
Excellent analysis of the snubber issue. I agree with CaptnWil's
comments. I have a couple of suggestions on how to achieve the elastic
properties in a short length:
1. Use kermantle climbing rope (dynamic, NOT static). It is engineered
specifically for for maximum energy absorption.
2. A parallel snubber scheme can deliver high elasticity at low load,
while still performing when the loads have gone into the storm anchoring
range. E.g., shorter snubber of 6mm kermantle, longer snubber of 10mm
kermantle or 3/8" 3-strand.
3. An interesting option is the Hazelett Snubber. Bill developed for
mooring applications, but should work just as well on the hook. I haven't
had a chance to evaluate yet (Wil are you listening? ), but the
elasticity curves are remarkable. A special polyurethane developed with
Globe Rubber. Bill is at hazellet@hazellet.com in Colchester, Vermont ph
802/863-6376.
4. Industrial shock cord has also been suggested. Haven't looked into
this option.
Cheers,
Steve
-----------------
Stephen C. Darden
Adagio Marine Ltd.