cd 25 spinnaker halyard block

[Ryan Puckett]

Hi all,
Can anyone help?
When I put a block for spin halyard on the bail of the masthead, should it be a "swivel" block? Or will this cause the lines to twist sometimes?
Thanks
Ryan
Sojurner
Chicago



Digistill@aol.com

[john b]

a standard block with a twisted d-shackle will work for the halyard. the most important location for the swivel is the halyard end-fitting that attaches to the head of the spinnaker

[john churchill]

i believe that you must have a swivel block. every installation i have seen uses one. it helps not only to prevent a twist when raising the sail, but also to ensure a fair lead when the sail is out in front, to port or to starboard. a twist shackle will not accomplish that, leading to halyard chafe. the sail is always moving a bit, much more so than a jib or main and the halyard may part surprising quickly.
john

[Mav Brinn]

i believe that you must have a swivel block. every installation i have seen uses one. it helps not only to prevent a twist when raising the sail, but also to ensure a fair lead when the sail is out in front, to port or to starboard. a twist shackle will not accomplish that, leading to halyard chafe. the sail is always moving a bit, much more so than a jib or main and the halyard may part surprising quickly.
john

You must use a swivel block
When the hailard twists...and it will... you need to be able to untwist it.
if no swivel is used you will wind up with one heck of a mess when it beomes twisted!!!!!!!



Mibrinn@aol.com

[Don Carr]

It is highly recommend you use a swivwl block. I hung a Schaeffer 5-series block with a universal head which allows it to swivel.