The UK Dart 15 Association

Mainsail area

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AndyS
Leading Rate
Leading Rate
Posts: 17
Joined: Mon Feb 01, 2016 4:44 pm

Mainsail area

Post by AndyS »

Out of interest I have been using my sprint as a bit of a test platform for seeing how much gain you get from deck sweepers and square tops. I cut down a shearwater main in the summer and finally got round last week to building a new one from scratch. I had a a bit of a revealtion last night in the loft when I measured my new sail and my Sprint sail.

The area of the Sprint mainsail is 9.3sqm not 10.2sqm as listed on the website. I've calculated the area using a few differing formulas to check and they all end up in the same place +/- 0.1m2.

Affects our SCHRS, goes from 1.274 to 1.291 (37 Secs corrected) in sport mode and from 1.402 to 1.426 (44 Secs corrected) in Una rig. Quite a change!
David Lloyd
Able Seaman
Able Seaman
Posts: 3
Joined: Wed Jun 08, 2016 3:18 pm

Re: Mainsail area

Post by David Lloyd »

SCHRS mainsail area includes the area of the mast as well - so it is correct!
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