I wonder if the 2nd sheave in the Nonsuch application is just a keeper or spacer because there isn't a single sheave fitting?
Chris Inniss
30U 324 Peace on Earth
Chicago
http://www.pbase.com/nonsuch/30u_324_peace_on_earth_hull
http://www.youtube.com/watch?feature=player_detailpage&v=-Oy_3nrAON8#t=0s
I just bought a halyard from Mike Quill and haven’t installed it and intented to keep the old “outside?” original as a spare. Now I don’t know how to proceed. Please help.
John Ferrero
1985 NS Ultra
Puffin 297
Hi
My original inquiry was for a friend with NS 33. His mast has two internal
sheaves at the masthead. He is interested in installing a second halyard.
Problem lies in where to have the second halyard exit the mast.
( see my original post below)
On my NS30C, I have only one sheave. However, the masthead casting has
a tab on the forward side of the casting where I have a full strength swivel block
which carries a “spinnaker” halyard all parts outside the mast.
John Ferrero, does this solve your problem
I exchanged e-mails with Mark Ellis on this some years ago, and my
recollection is as follows: avoid the use of a second internal halyard
because it will involve cutting another slot in the mast, with all the
concerns *that* entails (location, fairing of the hole etc.). I believe it
is referable to use a sturdy external mount for a block such as those on
some boats used for a signal halyard. It appears the use of the double
sheave was not intended for a 2nd internal halyard.
On Persistence I use the (heavy) external block for an emergency halyard,
using the signal halyard as a messenger to rig it if required. Previous
posts on this list have cautioned about raising the sail too high in this
situation as the force at the masthead is no longer in line with the track,
especially as it nears the masthead.
Mark did indicate that while cutting another exit hole was not ideal, it
*could* be done, and he indicated where the strain on the mast would be
least - I am looking for the e-mail exchange but I fear Outlook has done its
thing with my archives and it is long gone.
Bill Baxter
Persistence NS30
Kingston ON
I have a 1992 NS33 which has two sheaves for internal halyards in the masthead fitting. My principal halyard exits the mast on the starboard side, while the backup halyard exits on the port side. Both exit fittings appear to have been installed at the builder.
I also have an exterior cheek block on the port side near the top of the mast which I use as a flag halyard (hoisting a pig stick). I do not think this exterior block is strong enough to use as a halyard block…I certainly would not go up the mast in a bosun’s chair using this block. It has been two years since I had the masthead fitting out to replace the sheaves, but I do not think the flag halyard block was held in place by bolts.
The illustration which accompanied Allen Perrins’ 11/9/11 posting shows three slotted fasteners and one phillips head fastener in the cheek block, all set so close to the top of the mast that the aluminum casting inside would have to be cut off or drilled to accept them if they were bolts…and then you would be unable to get nuts on the bolts with the casting back in place.
Joe Tierney Allegro NS33 #64 Annapolis, MD
I exchanged e-mails with Mark Ellis on this some years ago, and my recollection is as follows: avoid the use of a second internal halyard because it will involve cutting another slot in the mast, with all the concerns that entails (location, fairing of the hole etc.). I believe it is preferable to use a sturdy external mount for a block such as those on some boats used for a signal halyard. It appears the use of the double sheave was not intended for a 2nd internal halyard.
On Persistence I use the (heavy) external block for an emergency halyard, using the signal halyard as a messenger to rig it if required. Previous posts on this list have cautioned about raising the sail too high in this situation as the force at the masthead is no longer in line with the track, especially as it nears the masthead.
Mark did indicate that while cutting another exit hole was not ideal, it could be done, and he indicated where the strain on the mast would be least – I am looking for the e-mail exchange but I fear Outlook has done its thing with my archives and it is long gone…
Bill Baxter
Persistence NS30