Most cable steering systems can last the life of the boat.. I recently dropped the rudder
on my 20yo Sabre
and the cables look like they were installed yesterday.
So, given there has to be a specific engineering reason why your cables failed, if the sheave is wider that that required then I suspect that the surface area of contact at that black may be the issue. If not, check for rough edges, free rotation etc and be sure not to overtighten..just enough to take out almost all of the free play.
Originally Posted by spiritcat
My steering system has chain and wire to a traveller and then a push/ pull rod to the tillers, its a cat. The wire broke at a block on the traveller, the block is not a dedicated wire sheave type block, but a standard rope block bolted to the traveller base.