Prop for 115 2S on SF 20

[oldbluesplayer]

FWIW - I've been running an old Johnson V4 - 115 on my Seafari 20' - the prop is a 13-3/4 by 15, and it spins it readily. I think my voltage regulator is blown, my fishfinder reads input voltage and shows 16+V, and consequently I believe my tach is way off, WOT it's showing close to 8000 rpm, can't be right, the motor would blow...

make a long story short, I'm picking up a 13-1/4 x 17 to give a try.... and gonna fix the voltage regulator. One thing I hear over and over is to Not lug a 2S motor, you need to let them spin up where they want to be, so proppage and tach reading is important.

Bill