problem with Variprop propellor performance on Vancouver 38 Pilot

ianw530

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Having a few issues with this and hoping to benefit from some of your knowledge out there!

The 1997 V38P I bought late 2011 has a Variprop 19in 3 blade prop, been on for several years . This seems to work ok in smooth water and under F4/5 winds. Above these, it appears to lose drive and extra revs dont help much. Short steep waves also seem to result in significant loss of thrust. Factory pitch was 13.5". ( 50hp Yanmar)
Anyone have similar issues/ideas?

currently thinking of changing forard pitch to 14.5" via adjusters, to see effect.

Possibly a separate or related aspect, above 1500rpm we get a 'grumbling' noise from the prop /shaft area (audible at the helm, not present in the gearbox area). No sign of wear in the cutlass bearing,,,,

ian
 
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