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masthead sheave O-28

Mar 5, 2010
10
Oday 28 St. Louis
Does anyone know how many sheaves are in the masthead of a O-28? Mine is setup with one forward halyard, one main halyard and a topping lift. I would like to add another halyard forward and hope the sheaves are already there.
 
Jun 11, 2004
1,186
Oday 31 Redondo Beach
Does anyone know how many sheaves are in the masthead of a O-28? Mine is setup with one forward halyard, one main halyard and a topping lift. I would like to add another halyard forward and hope the sheaves are already there.
It's most likely already there or at least provided for.

Do you know the maker of the mast? It may be an Isomat NG31 which was used on some O'Day 28's. Some pictures of those are here:



My NG1 masthead had the extra sheave so adding the second jib halyard was pretty straightforward.
 
Last edited:

Apex

.
Jun 19, 2013
1,022
Oday 28 Traverse City
in 78, they were set for jib and main, external rigging. I now have the 4 internally run, and spin crane.