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Farr 40 Tuning Guide

Doyle Base Settings

Forestay

Using the Arc Method described in the Doyle Tuning Guide, measure -1.475m from the Headstay Mark to the center of the Forestay Pin.

Caps

#64 RT 11 Rod Loos Gauge

D1s

#31 RT 11 Rod Loos Gauge

Headstay Pin Measurement

225mm

Jack Pressure

3600 PSI

J

Max

Mast Base

127.5mm from the bulk head to front of mast
   

TWS (knots)

Headstay Full Turns from Base

6 -6
8 -4
10 Base
12 +4
14 +6
16 +8
18 +10
20 +12
22+ +15
   
   

For more information or to order Farr 40 Class sails: