Back in the mid 80's our 21 Ring with a 2ltr 150 v6 ran a chopper prop 24p on 2:1 ran 5800 at 58mph about 12% slip boat set up for rough water as calm weather always going to be back of the pack, most Phantoms were lighter and motor set higher speed I guess around 60/61mph for them.......old style xr2 2ltr 162hp on 3 pointer set higher but no lifter on 2:1 26p worked chopper 6400rpm 70/71mph around 10% slip (death machine).......Marshan old style xr2 162 hp 2:1 26p worked chopper 6200rpm 65/66 about 12% slip (slip on the 26p may have been slightly higher due to cupping in worked prop this may have given a slightly higher pitch)
If I remember correctly Michael Frode and Neil Holmes used to set there red lines at 7800rpm on xr2 I did ask M Frode if this red line was achievable he just said we come to win (implied yes maybe) therefore those xr2 can no way have been standard
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i can na give her any more captain
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