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post #3 of Old 10-20-2003 Thread Starter
paulmcquillan
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Propeller performance change - feathering

On three separate days, we took notes on actual sailing performance after changing the prop. When we had some prior info from other racing days, we compared it. So far all the sailing days have had lighter and less consistent winds than usual. All info is with our 110% jib.

TWAngle__ TWSpeed __ New boat speed __ Old speed-fixed prop
047_______3.08_______ 2.10_______ -- would be under power
055_______ 8.00_______ 5.65_______ 4.3
060_______ 8.50_______ 5.80_______ 5.0
064 _______ 5.00_______ 3.04_______ 2.0
075_______ 8.90_______ 6.60_______ 5.6
080_______ 5.00 _______ 3.40 _______ 2.3
080_______ 7.10 _______ 5.32 _______ 4.0
106_______ 8.00 _______ 4.90 _______ -- no comparable info
134_______ 9.80_______ 5.12_______ -- no comparable info
180_______ 1.75 _______ 1.70_______ -- first day, we’ll check this
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