New Yamaha 4 stroke numbers

[HatTrick]

Was it cold...yes, was the rain pelting me...yes, was trying out a new motor awesome...absolutely! My old 1986 merc 2 stroke must have been more tired than I thought, because the new 4 stroke, which isn't supposed to be so quick out of the hole, is a real rocket. The tide and wind were pretty strong but I think these numbers are good. I arrived at the speeds by comparing the GPS speed to the depthfinder speed and taking into account the direction of the current.

Motor: 2005 Yamaha 150 4 stroke 25 " leg (extended transom)
Boat: 1986 SeaCraft 20 ft CC (20'6")
Carrying: One person, 40 gals fuel
Prop: 14x19
2000 rpm 9 mph
2500 rpm 12 mph
3000 rpm 23 mph
I haven't gone above 3200 rpm as I am still breaking her in. Between 2500 rpm and 3000 rpm she leaps up on plane.