which prop

[haim]

27 ft fountain open fisherman on stainless bracket, i have mirage 25p running at 76.5 mph fresh water at 6050rpm with twin 2007 25inch shaft 300xs at 6 % slip, would 26p new merc chopper 2's work better for top end, do not like 4 blades :rolleyes:

[RICHD379]

THE PROPS YOU HAVE SOUND LIKE THEY ARE WORKING WELL WITH 6%SLIP, BUT THE RPMS SOUND A LITTLE LOW I THINK THEY SHOULD BE AROUND 6500+ MERC RACING CAN LAB FINISH (LIGHTEN AND BALLANCE)THOSE PROPS AND FINE TUNE THEM FURTHER FOR YOUR APPLICATION :thumbsup:

[ripstop]

If you can get 6% slip out of a 27 ft fountain, I would fold my cards and take my winnings!

[haim]

if you take the #s and punch them into the mercury prop calculator you get the slip ratio at 6% , 25 p , 1.75 ratio, 6050 rpm , 76.5 =6to7% slippppppp.:D

[olmo40]

Wow :thumbsup: The only thing id add would be fuel and drive the sucker ,not too many get 6% .