When I bought my current boat it had a 16 year old Dyneema backstay, and
the PO  offered to buy a new backstay as he thought it was time..  It
probably would have lasted much longer, as it had an intact black cover,
but it was replaced anyways. It was made by BSI and purchased through The
Rigging Co, on Edgewood road, Annapolis. Definitely more than half the
weight of rod - I don't really think I would notice the difference if I had
put a rod backstay on.

Bill Coleman
Erie PA

On Fri, Sep 19, 2025 at 11:53 AM Tom Lynch via CnC-List <
[email protected]> wrote:

> Does have any experience with PBO (Polybenzoxazole) shrouds and or
> backstay?  The downside seems to indicate that this only works for a big
> budget racing team.
>
> Here is what I found from chatGPT:
> Why use PBO shrouds?
>
>
>    -
>
>    Lighter weight aloft → reduces heeling, improves performance.
>    -
>
>    Very low stretch → keeps the rig tension more consistent, which
>    improves sail shape and power.
>    -
>
>    Stronger than steel for the same diameter.
>
> Downside:
>
> PBO is UV sensitive and has a limited lifespan (often 3–5 years on racing
> boats before replacement is recommended). It also needs protective covers
> and regular inspection for damage.
>
>
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