[Public-List] Mainsheet diameter

Stephen gwyn stephen.gwyn at nrc-cnrc.gc.ca
Tue Oct 31 10:08:09 PDT 2017


The mainsheet, with it's 4-to-1 purchase, is never under very heavy load.
The diameter is more about what's comfortable in the hand. I use 10mm
which works out to somewhere between 1/2" and 7/16", but closer to 1/2".
It's fine. The jib sheets are single lines, and listening to the sound
as they are tightened and doing some undergraduate physics, the tension
is sometime 700lbs, still much less then the breaking strain of 10mm
polyester line.

SG



On 10/31/2017 07:28 AM, public-list-request at lists.alberg30.org wrote:
>   Great resource, thanks George.
> Is everyone using 7/16" for the mainsheet? I planned on 1/2", bad idea?
> Thanks
> Chris

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